<PAGE>

     As filed with the Securities and Exchange Commission on August 7, 2002.
                                                 Registration No. 333-__________
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                   ----------

                        ENSCO INTERNATIONAL INCORPORATED
             (Exact name of registrant as specified in its charter)

                 DELAWARE                                  76-0232579
      (State or other jurisdiction of                   (I.R.S. Employer
       incorporation or organization)                  Identification No.)

            2700 FOUNTAIN PLACE
             1445 ROSS AVENUE
               DALLAS, TEXAS                               75202-2792
 (Address of principal executive offices)                  (Zip code)

             ENSCO INTERNATIONAL INCORPORATED 2000 STOCK OPTION PLAN
                            (Full title of the plan)

                              CARY A. MOOMJIAN, JR.
                  VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                               2700 FOUNTAIN PLACE
                                1445 ROSS AVENUE
                            DALLAS, TEXAS 75202-2792
                     (Name and address of agent for service)

                                 (214) 922-1500
          (Telephone number, including area code, of agent for service)

                                    Copy to:


                                 Daniel W. Rabun
                                Baker & McKenzie
                          2001 Ross Avenue, Suite 2300
                               Dallas, Texas 75201
                                 (214) 978-3000

                                   ----------

                         CALCULATION OF REGISTRATION FEE
<Table>
<Caption>

                                                           PROPOSED MAXIMUM    PROPOSED MAXIMUM       AMOUNT OF
    TITLE OF SECURITIES TO BE          AMOUNT TO BE         OFFERING PRICE    AGGREGATE OFFERING     REGISTRATION
          REGISTERED(1)                REGISTERED(1)         PER SHARE(3)           PRICE(3)            fee(4)
    -------------------------          -------------       ----------------   ------------------     ------------
<S>                                    <C>                 <C>                <C>                    <C>

  Common Stock, par value $.10
            per share                   489,761(2)              $23.01            $11,269,401            $-0-
</Table>

<PAGE>


(1)      Shares of common stock of ENSCO International Incorporated, a Delaware
         corporation (the "Company" or the "Registrant"), par value $.10 per
         share ("Company common stock"), being registered hereby represent the
         aggregate number of shares of Company common stock issuable pursuant to
         the ENSCO International Incorporated 2000 Stock Option Plan, as amended
         (formerly known as the Chiles Offshore Inc. 2000 Stock Option Plan)
         (the "Plan"). The Company has assumed each outstanding option to
         purchase shares of common stock of Chiles, par value $.10 per share
         ("Chiles common stock"), pursuant to the Plan ("Chiles Options") as
         further explained in Note 2 below. Pursuant to Rule 416 promulgated
         under the Securities Act of 1933, as amended (the "Securities Act"),
         there are also being registered such additional shares of Company
         common stock as may become issuable under the anti-dilution provisions
         of the Plan or by reason of any dividend, stock-split, recapitalization
         or any other similar transaction without receipt of consideration that
         results in an increase in the number of shares of Company common stock
         issuable pursuant to the assumption of Chiles Options by the Company.

(2)      On May 14, 2002, the Company, Chore Acquisition, Inc., a Delaware
         corporation and wholly-owned subsidiary of the Company ("Merger Sub"),
         and Chiles Offshore Inc., a Delaware corporation ("Chiles"), entered
         into a Merger Agreement (the "Merger Agreement"). Pursuant to the
         Merger Agreement, Chiles was merged with and into Merger Sub (the
         "Merger") on August 7, 2002 (the "Effective Time"), with Merger Sub
         surviving as a wholly-owned subsidiary of the Company (the "Surviving
         Company"). As the result of the Merger, each outstanding share of
         Chiles common stock, other than dissenting shares and shares held by
         the Company, Merger Sub or Chiles, if any, was converted into the right
         to receive 0.6575 of a share of Company common stock and $5.25 in cash
         (the "Merger Consideration").

         Also as a result of the Merger, Chiles common stock is no longer
         issuable upon the exercise of Chiles Options. As of the Effective Time,
         the Company has assumed Chiles Options originally granted to Plan
         participants under the Plan. Pursuant to the Merger Agreement, Chiles
         Options have been converted into options exercisable for such amount of
         the Merger Consideration as the holders thereof would have received had
         they exercised their Chiles Options in full immediately prior to the
         Effective Time.

(3)      Estimated solely for purpose of calculating the registration fee
         pursuant to Rule 457(c) and (h) promulgated under the Securities Act,
         based on the average high and low per share prices of the common stock
         as reported by the New York Stock Exchange on August 5, 2002.

(4)      The securities being registered hereby were included in calculation of
         the registration fee paid in connection with the Company's registration
         statement no. 333-89998 on Form S-4, filed with the Securities and
         Exchange Commission (the "Commission") on June 7, 2002.



<PAGE>


                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

     The documents containing the information specified in Part I will be sent
or given to employees as specified by Rule 428(b)(1) of the Securities Act. In
accordance with the instructions to Part I of Form S-8, such documents will not
be filed with the Commission. These documents and the documents incorporated by
reference pursuant to Item 3 of Part II of this registration statement, taken
together, constitute a prospectus that meets the requirements of Section 10(a)
of the Securities Act.




<PAGE>


                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

         The following documents that the Registrant has filed with or furnished
to the Commission are incorporated in this Registration Statement by reference
and made a part hereof:

         (a)      Amended annual report on Form 10-K/A for the fiscal year ended
                  December 31, 2001, filed with the Commission on June 28, 2002;

         (b)      Annual report on Form 10-K for the fiscal year ended December
                  31, 2001, filed with the Commission on March 1, 2002;

         (c)      Proxy statement of the Registrant dated March 22, 2002, filed
                  with the Commission on March 25, 2002;

         (d)      Current report on Form 8-K dated January 17, 2002, filed with
                  the Commission on January 17, 2002;

         (e)      Current report on Form 8-K dated February 15, 2002, filed with
                  the Commission on February 19, 2002;

         (f)      Current report on Form 8-K dated March 18, 2002, filed with
                  the Commission on March 20, 2002;

         (g)      Current report on Form 8-K dated April 4, 2002, filed with the
                  Commission on April 10, 2002;

         (h)      Current report on Form 8-K dated April 16, 2002, filed with
                  the Commission on April 17, 2002;

         (i)      Quarterly report on Form 10-Q for the quarter ended March 31,
                  2002, filed with the Commission on May 7, 2002;

         (j)      Current report on Form 8-K dated May 14, 2002, filed with the
                  Commission on May 16, 2002;

         (k)      Current report on Form 8-K dated May 15, 2002, filed with the
                  Commission on May 17, 2002;

         (l)      Current report on Form 8-K dated June 17, 2002, filed with
                  the Commission on June 17, 2002;

         (m)      Amended current report on Form 8-K/A dated June 17, 2002,
                  filed with the Commission on June 18, 2002;

         (n)      Amended current report on Form 8-K/A dated June 17, 2002,
                  filed with the Commission on June 20, 2002;

         (o)      Current report on Form 8-K dated July 18, 2002, filed with the
                  Commission on July 22, 2002;

         (p)      Current report on Form 8-K dated August 7, 2002, filed with
                  the Commission on August 7, 2002;

         (q)      The description of the Registrant's common stock contained in
                  the registration statement on Form 8-B filed with the
                  Commission on November 12, 1987, and the Registration
                  Statement on Form 8-A filed with the Commission on February 3,
                  1981, and any amendment or report filed with the Commission
                  for the purpose of updating the description; and

         (r)      The description of the Registrant's preferred share purchase
                  rights contained in the registration statement on Form 8-A/A-1
                  (File No. 001-08097), filed with the Commission on March 4,
                  1997, and any amendment or report filed with the Commission
                  for the purpose of updating the description.

         All documents filed by the Registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Securities and Exchange Act of 1934 (the "Exchange
Act") subsequent to the effective date of this Registration Statement, but prior
to the filing of a post-effective amendment to this Registration Statement
indicating that all securities offered hereby have been sold or de-registering
all securities then remaining unsold, shall be deemed to be incorporated by




<PAGE>

reference herein and to be a part hereof from the date of filing of such
documents.

       Any statement contained herein or in any document incorporated or deemed
to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed to constitute a part of this Registration Statement, except as so
modified or superseded.

ITEM 4. DESCRIPTION OF SECURITIES.

         Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

         None.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section 145 of the Delaware General Corporation Law, or the DGCL,
provides that, subject to specific limitations in the case of derivative suits
brought by a corporation's stockholders in its name, a corporation may indemnify
any individual who is made a party or threatened to be made a party to any third
party suit or proceeding on account of being a director, officer, employee or
agent of the corporation against expenses, including attorneys' fees, judgments,
fines and amounts paid in settlement reasonably incurred by him or her in
connection with the action, if the individual:

           o      acted in good faith and in a manner he or she reasonably
                  believed to be in or not opposed to the best interests of the
                  corporation; and

           o      in the case of a criminal proceeding, had no reasonable cause
                  to believe his or her conduct was unlawful.

         Moreover, to the extent a present or former director or officer is
successful in the defense of the action, suit or proceeding, the DGCL requires a
corporation to indemnify the individual for reasonable expenses incurred
thereby.

         Article 15 of the Registrant's certificate of incorporation provides,
in general, that the Registrant must, to the full extent authorized or permitted
by law, indemnify its directors and officers under certain of the circumstances
defined in Section 145 of the DGCL, and that no director of the Registrant will
be personally liable to the Registrant or its stockholders for monetary damages
for any breach of such director's fiduciary duty, with certain exceptions.
Article 15 further allows the Registrant to purchase and maintain insurance on
behalf of the Registrant's directors, officers, employees or agents and to
provide for such indemnification by means of a trust fund, security interest,
letter of credit, surety bond, contract and/or similar arrangement. The
directors and officers of the Registrant and its subsidiaries are insured
(subject to certain exceptions and deductions) against liabilities which they
may incur in their capacity as such, including liabilities under the Securities
Act, under a liability insurance policy carried by the Registrant. The
Registrant has also entered into agreements with its officers and directors
which essentially provide that the Registrant will indemnify the officers and
directors to the extent set forth in the Registrant's certificate of
incorporation and bylaws.

         Article VII, Section 7 of the Registrant's bylaws provides that the
Registrant must indemnify its officers, directors, employees and agents to the
full extent permitted by the DGCL.

         The Merger Agreement provides that for six years from the Effective
Time, the Registrant will maintain for the benefit of the current directors and
officers of Chiles all existing rights to indemnification. These rights shall be
observed by the Registrant to the fullest extent permitted by Delaware law for a
period of six years from the Effective Time and the Registrant has agreed to
guarantee the performance of these obligations.



<PAGE>

         From the Effective Time until September 18, 2006, the Surviving Company
shall maintain in effect, for the benefit of the current directors and officers
of Chiles with respect to acts or omissions occurring prior to the Effective
Time, the existing policy of directors' and officers' liability insurance
maintained by Chiles as of the date of the Merger Agreement in the form
disclosed by Chiles to the Registrant prior to the date of the Merger Agreement;
provided that (a) the Surviving Company may substitute for such existing policy
a policy or policies of comparable coverage and (b) the Surviving Company shall
not be required to pay annual premiums for such existing policy (or for any
substitute policies) in excess of $200,000 in the aggregate. In the event any
future annual premiums for such existing policy (or any substitute policies)
exceed $200,000 in the aggregate, the Surviving Company shall be entitled to
reduce the amount of coverage of the existing policy (or any substitute
policies) to the amount of coverage that can be obtained for an aggregate annual
premium of $200,000.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

         Not applicable.

ITEM 8. EXHIBITS.

The following are filed as exhibits to this Registration Statement:

EXHIBIT NO.                                          DESCRIPTION

4.1               Merger Agreement, dated May 14, 2002, by and among ENSCO
                  International Incorporated, Chore Acquisition, Inc. and Chiles
                  Offshore Inc. (incorporated by reference to Exhibit 2.1 to the
                  Registrant's Current Report on Form 8-K, filed with the
                  Commission on May 16, 2002, File No. 001-08097)

4.2               Amended and Restated Certificate of Incorporation of the
                  Registrant (incorporated by reference to Exhibit 3.1 to the
                  Registrant's Quarterly Report on Form 10-Q for the quarter
                  ended June 30, 1997, File No. 001-08097)

4.3               Bylaws of the Registrant, as amended, effective March 30, 2001
                  (incorporated by reference to Exhibit 3.1 to the Registrant's
                  Quarterly Report on Form 10-Q for the quarter ended March 31,
                  2001, File No. 001-08097)

4.4               Rights Agreement, dated February 21, 1995, between ENSCO
                  International Incorporated and American Stock Transfer & Trust
                  Company, as Rights Agent, which includes as Exhibit A the Form
                  of Certificate of Designations of Series A Junior
                  Participating Preferred Stock of ENSCO International
                  Incorporated, as Exhibit B the Form of Right Certificate, and
                  as Exhibit C the Summary of Rights to Purchase Shares of
                  Preferred Stock of ENSCO International Incorporated
                  (incorporated by reference to Exhibit 4 to Registrant's Form
                  8-K dated February 21, 1995, File No. 1-8097)

4.5               First Amendment to Rights Agreement, dated March 3, 1997,
                  between ENSCO International Incorporated and American Stock
                  Transfer & Trust Company, as Rights Agent (incorporated by
                  reference to Exhibit 4.2 to the Registrant's Current Report on
                  Form 8-K dated March 3, 1997, File No. 001-8097)

4.6*              ENSCO International Incorporated 2000 Stock Option Plan
                  (formerly known as the Chiles Offshore Inc. 2000 Stock Option
                  Plan)

4.7*              Amendment No. 1 to the ENSCO International Incorporated 2000
                  Stock Option Plan

4.8*              Amendment No. 2 to the ENSCO International Incorporated 2000
                  Stock Option Plan

5.1*              Opinion of Baker & McKenzie as to the legality of shares being
                  registered


<PAGE>

15.1*             Letter from KPMG LLP regarding unaudited interim financial
                  information

23.1*             Consent of PricewaterhouseCoopers LLP

23.2*             Consent of KPMG LLP

23.3*             Consent of Baker & McKenzie (included in Exhibit 5.1)

24                Power of Attorney (included in the signature pages of this
                  Registration Statement)

----------

* filed herewith

ITEM 9. UNDERTAKINGS.

(a) The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement:

                  (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act;

                  (ii) To reflect in the prospectus any facts or events arising
after the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in this Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20% change in the maximum
aggregate offering price set forth in the "Calculation of Registration Fee"
table in the effective registration statement;

                  (iii) To include any material information with respect to the
plan of distribution not previously disclosed in this Registration Statement or
any material change to such information in this Registration Statement;

provided, however, that the undertakings set forth in paragraphs (a)(1)(i) and
(a)(1)(ii) above do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports
filed with or furnished to the Commission by the Registrant pursuant to Section
13 or Section 15(d) of the Exchange Act that are incorporated by reference in
this Registration Statement;

         (2) That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof; and

         (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

(b) The undersigned Registrant hereby further undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Exchange Act) that is incorporated by
reference in this Registration Statement shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

(c) Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant



<PAGE>

has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.





<PAGE>


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Dallas, State of Texas, on August 7, 2002.

                                             ENSCO INTERNATIONAL INCORPORATED


                                             By: /s/ Carl F. Thorne
                                                 -------------------------------
                                                 Carl F. Thorne
                                                 Chairman of the Board and Chief
                                                 Executive Officer


                                POWER OF ATTORNEY

         Each person whose signature appears below hereby authorizes Carl F.
Thorne to file one or more amendments (including post-effective amendments) to
this Registration Statement, which amendments may make such changes in this
Registration Statement as each of them deems appropriate, and each such person
hereby appoints Carl F. Thorne as attorney-in-fact to execute in the name and on
behalf of the Registrant and any such person, individually and in each capacity
stated below, any such amendments to this Registration Statement.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.


<Table>
<Caption>

                  SIGNATURE                               TITLE                              DATE
                  ---------                               -----                              ----
<S>                                               <C>                                      <C>

/s/ Carl F. Thorne
------------------------------
Carl F. Thorne                                    Chairman of the Board and Chief          August 7, 2002
                                                  Executive Officer (Principal
                                                  Executive Officer)

/s/ H. E. Malone
------------------------------
H. E. Malone                                      Vice President - Accounting, Tax &       August 7, 2002
                                                  Information Systems (Principal
                                                  Financial Officer)

 /s/ David A. Armour
------------------------------
David A. Armour                                   Controller (Principal Accounting         August 7, 2002
                                                  Officer)

 /s/ David M. Carmichael                          Director                                 August 7, 2002
------------------------------
David M. Carmichael


 /s/ Gerald W. Haddock                            Director                                 August 7, 2002
------------------------------
Gerald W. Haddock
</Table>


<PAGE>

<Table>

<S>                                               <C>                                      <C>

 /s/ Thomas L. Kelly II
------------------------------
Thomas L. Kelly II                                Director                                 August 7, 2002


 /s/ Morton H. Meyerson
------------------------------
Morton H. Meyerson                                Director                                 August 7, 2002


 /s/ Paul E. Rowsey, III                                                                   August 7, 2002
------------------------------
Paul E. Rowsey, III                               Director



 /s/ Joel V. Staff                                                                         August 7, 2002
------------------------------
Joel V. Staff                                     Director
</Table>



<PAGE>


                                  EXHIBIT INDEX


<Table>
<Caption>

EXHIBIT
NUMBER                                 DESCRIPTION
-------                                -----------
<S>           <C>

4.1           Merger Agreement, dated May 14, 2002, by and among ENSCO
              International Incorporated, Chore Acquisition, Inc. and Chiles
              Offshore Inc. (incorporated by reference to Exhibit 2.1 to the
              Registrant's Current Report on Form 8-K, filed with the Commission
              on May 16, 2002, File No. 001-08097)

4.2           Amended and Restated Certificate of Incorporation of the
              Registrant (incorporated by reference to Exhibit 3.1 to the
              Registrant's Quarterly Report on Form 10-Q for the quarter ended
              June 30, 1997, File No.
              001-08097)

4.3           Bylaws of the Registrant, as amended, effective March 30, 2001
              (incorporated by reference to Exhibit 3.1 to the Registrant's
              Quarterly Report on Form 10-Q for the quarter ended March 31,
              2001, File No. 001-08097)

4.4           Rights Agreement, dated February 21, 1995, between ENSCO
              International Incorporated and American Stock Transfer & Trust
              Company, as Rights Agent, which includes as Exhibit A the Form of
              Certificate of Designations of Series A Junior Participating
              Preferred Stock of ENSCO International Incorporated, as Exhibit B
              the Form of Right Certificate, and as Exhibit C the Summary of
              Rights to Purchase Shares of Preferred Stock of ENSCO
              International Incorporated (incorporated by reference to Exhibit 4
              to Registrant's Form 8-K dated February 21, 1995, File No. 1-8097)

4.5           First Amendment to Rights Agreement, dated March 3, 1997, between
              ENSCO International Incorporated and American Stock Transfer &
              Trust Company, as Rights Agent (incorporated by reference to
              Exhibit 4.2 to the Registrant's Current Report on Form 8-K dated
              March 3, 1997, File No. 001-8097)

4.6*          ENSCO International Incorporated 2000 Stock Option Plan (formerly
              known as the Chiles Offshore Inc. 2000 Stock Option Plan)

4.7*          Amendment No. 1 to the ENSCO International Incorporated 2000 Stock
              Option Plan

4.8*          Amendment No. 2 to the ENSCO International Incorporated 2000 Stock
              Option Plan

5.1*          Opinion of Baker & McKenzie as to the legality of shares being
              registered

15.1*         Letter from KPMG LLP regarding unaudited interim financial
              information

23.1*         Consent of PricewaterhouseCoopers LLP

23.2*         Consent of KPMG LLP

23.3*         Consent of Baker & McKenzie (included in Exhibit 5.1)

24            Power of Attorney (included in the signature pages of this
              Registration Statement)
</Table>

----------

* filed herewith
[{"type": "S-8", "sequence": "1", "filename": "d98759sv8.txt", "description": "FORM S-8", "secsgml_size_bytes": 30303}]
{"company-data": {"conformed-name": "ENSCO INTERNATIONAL INC", "cik": "0000314808", "assigned-sic": "1381", "irs-number": "760232579", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-97757", "film-number": "02721722"}, "business-address": {"street1": "2700 FOUNTAIN PL", "street2": "1445 ROSS AVE STE 2700", "city": "DALLAS", "state": "TX", "zip": "75202-2792", "phone": "2149221500"}, "mail-address": {"street1": "2700 FOUNTAIN PLACE", "street2": "1445 ROSS AVE", "city": "DALLAS", "state": "TX", "zip": "75202-2792"}, "former-company": [{"former-conformed-name": "BLOCKER ENERGY CORP", "date-changed": "19871015"}, {"former-conformed-name": "ENERGY SERVICE COMPANY INC", "date-changed": "19920703"}]}
As filed with the Securities and Exchange Commission on August 7, 2002.
                                                 Registration No. 333-__________
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                   ----------

                        ENSCO INTERNATIONAL INCORPORATED
             (Exact name of registrant as specified in its charter)

                 DELAWARE                                  76-0232579
      (State or other jurisdiction of                   (I.R.S. Employer
       incorporation or organization)                  Identification No.)

            2700 FOUNTAIN PLACE
             1445 ROSS AVENUE
               DALLAS, TEXAS                               75202-2792
 (Address of principal executive offices)                  (Zip code)

             ENSCO INTERNATIONAL INCORPORATED 2000 STOCK OPTION PLAN
                            (Full title of the plan)

                              CARY A. MOOMJIAN, JR.
                  VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                               2700 FOUNTAIN PLACE
                                1445 ROSS AVENUE
                            DALLAS, TEXAS 75202-2792
                     (Name and address of agent for service)

                                 (214) 922-1500
          (Telephone number, including area code, of agent for service)

                                    Copy to:

                                 Daniel W. Rabun
                                Baker & McKenzie
                          2001 Ross Avenue, Suite 2300
                               Dallas, Texas 75201
                                 (214) 978-3000

                                   ----------

                         CALCULATION OF REGISTRATION FEE
PROPOSED MAXIMUM    PROPOSED MAXIMUM       AMOUNT OF
    TITLE OF SECURITIES TO BE          AMOUNT TO BE         OFFERING PRICE    AGGREGATE OFFERING     REGISTRATION
          REGISTERED(1)                REGISTERED(1)         PER SHARE(3)           PRICE(3)            fee(4)
    -------------------------          -------------       ----------------   ------------------     ------------
Common Stock, par value $.10
            per share                   489,761(2)              $23.01            $11,269,401            $-0-
(1)      Shares of common stock of ENSCO International Incorporated, a Delaware
         corporation (the "Company" or the "Registrant"), par value $.10 per
         share ("Company common stock"), being registered hereby represent the
         aggregate number of shares of Company common stock issuable pursuant to
         the ENSCO International Incorporated 2000 Stock Option Plan, as amended
         (formerly known as the Chiles Offshore Inc. 2000 Stock Option Plan)
         (the "Plan"). The Company has assumed each outstanding option to
         purchase shares of common stock of Chiles, par value $.10 per share
         ("Chiles common stock"), pursuant to the Plan ("Chiles Options") as
         further explained in Note 2 below. Pursuant to Rule 416 promulgated
         under the Securities Act of 1933, as amended (the "Securities Act"),
         there are also being registered such additional shares of Company
         common stock as may become issuable under the anti-dilution provisions
         of the Plan or by reason of any dividend, stock-split, recapitalization
         or any other similar transaction without receipt of consideration that
         results in an increase in the number of shares of Company common stock
         issuable pursuant to the assumption of Chiles Options by the Company.

(2)      On May 14, 2002, the Company, Chore Acquisition, Inc., a Delaware
         corporation and wholly-owned subsidiary of the Company ("Merger Sub"),
         and Chiles Offshore Inc., a Delaware corporation ("Chiles"), entered
         into a Merger Agreement (the "Merger Agreement"). Pursuant to the
         Merger Agreement, Chiles was merged with and into Merger Sub (the
         "Merger") on August 7, 2002 (the "Effective Time"), with Merger Sub
         surviving as a wholly-owned subsidiary of the Company (the "Surviving
         Company"). As the result of the Merger, each outstanding share of
         Chiles common stock, other than dissenting shares and shares held by
         the Company, Merger Sub or Chiles, if any, was converted into the right
         to receive 0.6575 of a share of Company common stock and $5.25 in cash
         (the "Merger Consideration").

         Also as a result of the Merger, Chiles common stock is no longer
         issuable upon the exercise of Chiles Options. As of the Effective Time,
         the Company has assumed Chiles Options originally granted to Plan
         participants under the Plan. Pursuant to the Merger Agreement, Chiles
         Options have been converted into options exercisable for such amount of
         the Merger Consideration as the holders thereof would have received had
         they exercised their Chiles Options in full immediately prior to the
         Effective Time.

(3)      Estimated solely for purpose of calculating the registration fee
         pursuant to Rule 457(c) and (h) promulgated under the Securities Act,
         based on the average high and low per share prices of the common stock
         as reported by the New York Stock Exchange on August 5, 2002.

(4)      The securities being registered hereby were included in calculation of
         the registration fee paid in connection with the Company's registration
         statement no. 333-89998 on Form S-4, filed with the Securities and
         Exchange Commission (the "Commission") on June 7, 2002.
PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

     The documents containing the information specified in Part I will be sent
or given to employees as specified by Rule 428(b)(1) of the Securities Act. In
accordance with the instructions to Part I of Form S-8, such documents will not
be filed with the Commission. These documents and the documents incorporated by
reference pursuant to Item 3 of Part II of this registration statement, taken
together, constitute a prospectus that meets the requirements of Section 10(a)
of the Securities Act.
PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

         The following documents that the Registrant has filed with or furnished
to the Commission are incorporated in this Registration Statement by reference
and made a part hereof:

         (a)      Amended annual report on Form 10-K/A for the fiscal year ended
                  December 31, 2001, filed with the Commission on June 28, 2002;

         (b)      Annual report on Form 10-K for the fiscal year ended December
                  31, 2001, filed with the Commission on March 1, 2002;

         (c)      Proxy statement of the Registrant dated March 22, 2002, filed
                  with the Commission on March 25, 2002;

         (d)      Current report on Form 8-K dated January 17, 2002, filed with
                  the Commission on January 17, 2002;

         (e)      Current report on Form 8-K dated February 15, 2002, filed with
                  the Commission on February 19, 2002;

         (f)      Current report on Form 8-K dated March 18, 2002, filed with
                  the Commission on March 20, 2002;

         (g)      Current report on Form 8-K dated April 4, 2002, filed with the
                  Commission on April 10, 2002;

         (h)      Current report on Form 8-K dated April 16, 2002, filed with
                  the Commission on April 17, 2002;

         (i)      Quarterly report on Form 10-Q for the quarter ended March 31,
                  2002, filed with the Commission on May 7, 2002;

         (j)      Current report on Form 8-K dated May 14, 2002, filed with the
                  Commission on May 16, 2002;

         (k)      Current report on Form 8-K dated May 15, 2002, filed with the
                  Commission on May 17, 2002;

         (l)      Current report on Form 8-K dated June 17, 2002, filed with
                  the Commission on June 17, 2002;

         (m)      Amended current report on Form 8-K/A dated June 17, 2002,
                  filed with the Commission on June 18, 2002;

         (n)      Amended current report on Form 8-K/A dated June 17, 2002,
                  filed with the Commission on June 20, 2002;

         (o)      Current report on Form 8-K dated July 18, 2002, filed with the
                  Commission on July 22, 2002;

         (p)      Current report on Form 8-K dated August 7, 2002, filed with
                  the Commission on August 7, 2002;

         (q)      The description of the Registrant's common stock contained in
                  the registration statement on Form 8-B filed with the
                  Commission on November 12, 1987, and the Registration
                  Statement on Form 8-A filed with the Commission on February 3,
                  1981, and any amendment or report filed with the Commission
                  for the purpose of updating the description; and

         (r)      The description of the Registrant's preferred share purchase
                  rights contained in the registration statement on Form 8-A/A-1
                  (File No. 001-08097), filed with the Commission on March 4,
                  1997, and any amendment or report filed with the Commission
                  for the purpose of updating the description.

         All documents filed by the Registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Securities and Exchange Act of 1934 (the "Exchange
Act") subsequent to the effective date of this Registration Statement, but prior
to the filing of a post-effective amendment to this Registration Statement
indicating that all securities offered hereby have been sold or de-registering
all securities then remaining unsold, shall be deemed to be incorporated by
reference herein and to be a part hereof from the date of filing of such
documents.

       Any statement contained herein or in any document incorporated or deemed
to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed to constitute a part of this Registration Statement, except as so
modified or superseded.

ITEM 4. DESCRIPTION OF SECURITIES.

         Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

         None.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Section 145 of the Delaware General Corporation Law, or the DGCL,
provides that, subject to specific limitations in the case of derivative suits
brought by a corporation's stockholders in its name, a corporation may indemnify
any individual who is made a party or threatened to be made a party to any third
party suit or proceeding on account of being a director, officer, employee or
agent of the corporation against expenses, including attorneys' fees, judgments,
fines and amounts paid in settlement reasonably incurred by him or her in
connection with the action, if the individual:

           o      acted in good faith and in a manner he or she reasonably
                  believed to be in or not opposed to the best interests of the
                  corporation; and

           o      in the case of a criminal proceeding, had no reasonable cause
                  to believe his or her conduct was unlawful.

         Moreover, to the extent a present or former director or officer is
successful in the defense of the action, suit or proceeding, the DGCL requires a
corporation to indemnify the individual for reasonable expenses incurred
thereby.

         Article 15 of the Registrant's certificate of incorporation provides,
in general, that the Registrant must, to the full extent authorized or permitted
by law, indemnify its directors and officers under certain of the circumstances
defined in Section 145 of the DGCL, and that no director of the Registrant will
be personally liable to the Registrant or its stockholders for monetary damages
for any breach of such director's fiduciary duty, with certain exceptions.
Article 15 further allows the Registrant to purchase and maintain insurance on
behalf of the Registrant's directors, officers, employees or agents and to
provide for such indemnification by means of a trust fund, security interest,
letter of credit, surety bond, contract and/or similar arrangement. The
directors and officers of the Registrant and its subsidiaries are insured
(subject to certain exceptions and deductions) against liabilities which they
may incur in their capacity as such, including liabilities under the Securities
Act, under a liability insurance policy carried by the Registrant. The
Registrant has also entered into agreements with its officers and directors
which essentially provide that the Registrant will indemnify the officers and
directors to the extent set forth in the Registrant's certificate of
incorporation and bylaws.

         Article VII, Section 7 of the Registrant's bylaws provides that the
Registrant must indemnify its officers, directors, employees and agents to the
full extent permitted by the DGCL.

         The Merger Agreement provides that for six years from the Effective
Time, the Registrant will maintain for the benefit of the current directors and
officers of Chiles all existing rights to indemnification. These rights shall be
observed by the Registrant to the fullest extent permitted by Delaware law for a
period of six years from the Effective Time and the Registrant has agreed to
guarantee the performance of these obligations.
From the Effective Time until September 18, 2006, the Surviving Company
shall maintain in effect, for the benefit of the current directors and officers
of Chiles with respect to acts or omissions occurring prior to the Effective
Time, the existing policy of directors' and officers' liability insurance
maintained by Chiles as of the date of the Merger Agreement in the form
disclosed by Chiles to the Registrant prior to the date of the Merger Agreement;
provided that (a) the Surviving Company may substitute for such existing policy
a policy or policies of comparable coverage and (b) the Surviving Company shall
not be required to pay annual premiums for such existing policy (or for any
substitute policies) in excess of $200,000 in the aggregate. In the event any
future annual premiums for such existing policy (or any substitute policies)
exceed $200,000 in the aggregate, the Surviving Company shall be entitled to
reduce the amount of coverage of the existing policy (or any substitute
policies) to the amount of coverage that can be obtained for an aggregate annual
premium of $200,000.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED.

         Not applicable.

ITEM 8. EXHIBITS.

The following are filed as exhibits to this Registration Statement:

EXHIBIT NO.                                          DESCRIPTION

4.1               Merger Agreement, dated May 14, 2002, by and among ENSCO
                  International Incorporated, Chore Acquisition, Inc. and Chiles
                  Offshore Inc. (incorporated by reference to Exhibit 2.1 to the
                  Registrant's Current Report on Form 8-K, filed with the
                  Commission on May 16, 2002, File No. 001-08097)

4.2               Amended and Restated Certificate of Incorporation of the
                  Registrant (incorporated by reference to Exhibit 3.1 to the
                  Registrant's Quarterly Report on Form 10-Q for the quarter
                  ended June 30, 1997, File No. 001-08097)

4.3               Bylaws of the Registrant, as amended, effective March 30, 2001
                  (incorporated by reference to Exhibit 3.1 to the Registrant's
                  Quarterly Report on Form 10-Q for the quarter ended March 31,
                  2001, File No. 001-08097)

4.4               Rights Agreement, dated February 21, 1995, between ENSCO
                  International Incorporated and American Stock Transfer & Trust
                  Company, as Rights Agent, which includes as Exhibit A the Form
                  of Certificate of Designations of Series A Junior
                  Participating Preferred Stock of ENSCO International
                  Incorporated, as Exhibit B the Form of Right Certificate, and
                  as Exhibit C the Summary of Rights to Purchase Shares of
                  Preferred Stock of ENSCO International Incorporated
                  (incorporated by reference to Exhibit 4 to Registrant's Form
                  8-K dated February 21, 1995, File No. 1-8097)

4.5               First Amendment to Rights Agreement, dated March 3, 1997,
                  between ENSCO International Incorporated and American Stock
                  Transfer & Trust Company, as Rights Agent (incorporated by
                  reference to Exhibit 4.2 to the Registrant's Current Report on
                  Form 8-K dated March 3, 1997, File No. 001-8097)

4.6*              ENSCO International Incorporated 2000 Stock Option Plan
                  (formerly known as the Chiles Offshore Inc. 2000 Stock Option
                  Plan)

4.7*              Amendment No. 1 to the ENSCO International Incorporated 2000
                  Stock Option Plan

4.8*              Amendment No. 2 to the ENSCO International Incorporated 2000
                  Stock Option Plan

5.1*              Opinion of Baker & McKenzie as to the legality of shares being
                  registered
15.1*             Letter from KPMG LLP regarding unaudited interim financial
                  information

23.1*             Consent of PricewaterhouseCoopers LLP

23.2*             Consent of KPMG LLP

23.3*             Consent of Baker & McKenzie (included in Exhibit 5.1)

24                Power of Attorney (included in the signature pages of this
                  Registration Statement)

----------

* filed herewith

ITEM 9. UNDERTAKINGS.

(a) The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement:

                  (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act;

                  (ii) To reflect in the prospectus any facts or events arising
after the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in this Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than a 20% change in the maximum
aggregate offering price set forth in the "Calculation of Registration Fee"
table in the effective registration statement;

                  (iii) To include any material information with respect to the
plan of distribution not previously disclosed in this Registration Statement or
any material change to such information in this Registration Statement;

provided, however, that the undertakings set forth in paragraphs (a)(1)(i) and
(a)(1)(ii) above do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports
filed with or furnished to the Commission by the Registrant pursuant to Section
13 or Section 15(d) of the Exchange Act that are incorporated by reference in
this Registration Statement;

         (2) That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof; and

         (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

(b) The undersigned Registrant hereby further undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Exchange Act) that is incorporated by
reference in this Registration Statement shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

(c) Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Dallas, State of Texas, on August 7, 2002.

                                             ENSCO INTERNATIONAL INCORPORATED

                                             By: /s/ Carl F. Thorne
                                                 -------------------------------
                                                 Carl F. Thorne
                                                 Chairman of the Board and Chief
                                                 Executive Officer

                                POWER OF ATTORNEY

         Each person whose signature appears below hereby authorizes Carl F.
Thorne to file one or more amendments (including post-effective amendments) to
this Registration Statement, which amendments may make such changes in this
Registration Statement as each of them deems appropriate, and each such person
hereby appoints Carl F. Thorne as attorney-in-fact to execute in the name and on
behalf of the Registrant and any such person, individually and in each capacity
stated below, any such amendments to this Registration Statement.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.
SIGNATURE                               TITLE                              DATE
                  ---------                               -----                              ----
/s/ Carl F. Thorne
------------------------------
Carl F. Thorne                                    Chairman of the Board and Chief          August 7, 2002
                                                  Executive Officer (Principal
                                                  Executive Officer)

/s/ H. E. Malone
------------------------------
H. E. Malone                                      Vice President - Accounting, Tax &       August 7, 2002
                                                  Information Systems (Principal
                                                  Financial Officer)

 /s/ David A. Armour
------------------------------
David A. Armour                                   Controller (Principal Accounting         August 7, 2002
                                                  Officer)

 /s/ David M. Carmichael                          Director                                 August 7, 2002
------------------------------
David M. Carmichael

 /s/ Gerald W. Haddock                            Director                                 August 7, 2002
------------------------------
Gerald W. Haddock
/s/ Thomas L. Kelly II
------------------------------
Thomas L. Kelly II                                Director                                 August 7, 2002

 /s/ Morton H. Meyerson
------------------------------
Morton H. Meyerson                                Director                                 August 7, 2002

 /s/ Paul E. Rowsey, III                                                                   August 7, 2002
------------------------------
Paul E. Rowsey, III                               Director

 /s/ Joel V. Staff                                                                         August 7, 2002
------------------------------
Joel V. Staff                                     Director
EXHIBIT INDEX
EXHIBIT
NUMBER                                 DESCRIPTION
-------                                -----------
4.1           Merger Agreement, dated May 14, 2002, by and among ENSCO
              International Incorporated, Chore Acquisition, Inc. and Chiles
              Offshore Inc. (incorporated by reference to Exhibit 2.1 to the
              Registrant's Current Report on Form 8-K, filed with the Commission
              on May 16, 2002, File No. 001-08097)

4.2           Amended and Restated Certificate of Incorporation of the
              Registrant (incorporated by reference to Exhibit 3.1 to the
              Registrant's Quarterly Report on Form 10-Q for the quarter ended
              June 30, 1997, File No.
              001-08097)

4.3           Bylaws of the Registrant, as amended, effective March 30, 2001
              (incorporated by reference to Exhibit 3.1 to the Registrant's
              Quarterly Report on Form 10-Q for the quarter ended March 31,
              2001, File No. 001-08097)

4.4           Rights Agreement, dated February 21, 1995, between ENSCO
              International Incorporated and American Stock Transfer & Trust
              Company, as Rights Agent, which includes as Exhibit A the Form of
              Certificate of Designations of Series A Junior Participating
              Preferred Stock of ENSCO International Incorporated, as Exhibit B
              the Form of Right Certificate, and as Exhibit C the Summary of
              Rights to Purchase Shares of Preferred Stock of ENSCO
              International Incorporated (incorporated by reference to Exhibit 4
              to Registrant's Form 8-K dated February 21, 1995, File No. 1-8097)

4.5           First Amendment to Rights Agreement, dated March 3, 1997, between
              ENSCO International Incorporated and American Stock Transfer &
              Trust Company, as Rights Agent (incorporated by reference to
              Exhibit 4.2 to the Registrant's Current Report on Form 8-K dated
              March 3, 1997, File No. 001-8097)

4.6*          ENSCO International Incorporated 2000 Stock Option Plan (formerly
              known as the Chiles Offshore Inc. 2000 Stock Option Plan)

4.7*          Amendment No. 1 to the ENSCO International Incorporated 2000 Stock
              Option Plan

4.8*          Amendment No. 2 to the ENSCO International Incorporated 2000 Stock
              Option Plan

5.1*          Opinion of Baker & McKenzie as to the legality of shares being
              registered

15.1*         Letter from KPMG LLP regarding unaudited interim financial
              information

23.1*         Consent of PricewaterhouseCoopers LLP

23.2*         Consent of KPMG LLP

23.3*         Consent of Baker & McKenzie (included in Exhibit 5.1)

24            Power of Attorney (included in the signature pages of this
              Registration Statement)
----------

* filed herewith