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<P style="font-size: 14pt" align="center"><B>UNITED STATES<BR>
SECURITIES AND
EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P style="font-size: 18pt" align="center"><B>FORM 8-K</B>

<P style="font-size: 12pt" align="center"><B>CURRENT REPORT<BR>
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P style="font-size: 10pt" align="center"><B>Date of Report (Date of earliest
event reported): March 4, 2009</B>

<P style="font-size: 24pt" align="center"><B>ALLIS-CHALMERS ENERGY
INC.<BR>
</B><FONT style="font-size: 10pt">(Exact name of registrant as
specified in its charter) </FONT>
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  <TD width="32%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
  <TD width="33%">&nbsp;</TD>
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  <TD width="32%">&nbsp;</TD>
 </TR>
 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>Delaware</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>001-02199</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>39-0126090</B></TD>
 </TR>
 <TR valign="top">
  <TD>(State or other Jurisdiction of Incorporation)</TD>
  <TD>&nbsp;</TD>
  <TD>(Commission File Number)</TD>
  <TD>&nbsp;</TD>
  <TD>(IRS Employer Identification No.)</TD>
 </TR>

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cellpadding="0" width="100%" border="0">

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  <TD width="49%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
  <TD width="49%">&nbsp;</TD>
 </TR>
 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>5075 Westheimer<BR>
Suite
890<BR>
Houston, Texas<BR>
</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>77056</B></TD>
 </TR>
 <TR valign="top">
  <TD>(Address of Principal Executive Offices)</TD>
  <TD>&nbsp;</TD>
  <TD>(Zip Code)</TD>
 </TR>

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<P style="font-size: 10pt" align="center">Registrant&#8217;s telephone number,
including area code: <B>(713) 369-0550</B>
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cellpadding="0" width="30%" border="0">

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 </TR>
 <TR>
  <TD nowrap>(Former name or former address if changed since last report.)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="left">Check the appropriate box below if the
Form 8-K filing is intended to simultaneously satisfy the filing obligation of
the registrant under any of the following provisions:

<P style="font-size: 10pt" align="left"><FONT face="Wingdings">o</FONT> Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>



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<P style="display: none; font-size: 10pt" align="center">1
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style="margin-left: 0.25in; width: 7.2in; font-family: 'Times New Roman',Times,serif">

<P style="font-size: 10pt" align="left"><B>Item&nbsp;2.02 Results of Operations
and Financial Condition.</B>

<P style="font-size: 10pt" align="left"><B>Item&nbsp;7.01 Regulation&nbsp;FD
Disclosure.</B>

<P style="font-size: 10pt; text-indent: 4%" align="left">On March&nbsp;4, 2009,
Allis-Chalmers Energy Inc. (the &#8220;Company&#8221;) announced earnings
results for the fourth quarter and fiscal year ended December&nbsp;31, 2008. A
copy of the Company&#8217;s press release is attached as Exhibit&nbsp;99.1.

<P style="font-size: 10pt; text-indent: 4%" align="left">The exhibit described
above is not being &#8220;filed&#8221; for purposes of Section&nbsp;18 of the
Securities Exchange Act of 1934, as amended, but is being furnished solely to
comply with Item&nbsp;2.02 of Form 8-K and Regulation&nbsp;FD promulgated by
the Securities and Exchange Commission.

<P style="font-size: 10pt" align="left"><B>Item&nbsp;9.01. Financial Statements
and Exhibits.</B>

<P style="font-size: 10pt" align="left"><B>d) Exhibits</B>
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  <TD style="border-bottom: #000000 1px solid" nowrap align="left">Exhibit<BR>Number</TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid" nowrap
align="center">Description</TD>
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<DIV style="margin-left: 0px; text-indent: 0px">99.1 </DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Press Release, dated March&nbsp;4, 2009.</TD>
 </TR>
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</TABLE>
</DIV>

<P style="font-size: 10pt" align="center"><B>SIGNATURES</B>

<P style="font-size: 10pt; text-indent: 4%" align="left">Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
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  <TD valign="top">&nbsp;</TD>
  <TD colspan="2" valign="top" align="left">ALLIS-CHALMERS ENERGY INC.</TD>
 </TR>

<TR><TD>&nbsp;</TD></TR>

 <TR valign="bottom">
  <TD valign="top">Date: March&nbsp;3, 2009</TD>
  <TD align="left">By: &nbsp;</TD>
  <TD valign="top" align="left" style="border-bottom: #000000 1px solid">/s/ Theodore F. Pound III</TD>
 </TR>

 <TR valign="bottom">
  <TD>&nbsp;</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Name: Theodore F. Pound III<BR>
Title: General Counsel &amp; Secretary</TD>
 </TR>

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<P style="font-size: 10pt" align="center">&nbsp;

<P style="display: none; font-size: 10pt" align="center">2
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<P style="font-size: 10pt" align="left">EXHIBIT INDEX <BR>
&nbsp;
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<TABLE style="font-size: 10pt" cellspacing="0" cellpadding="0" width="100%"
border="0">
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  <TD width="12%">&nbsp;</TD>
  <TD width="5%">&nbsp;</TD>
  <TD width="83%">&nbsp;</TD>
 </TR>
 <TR style="font-size: 10pt" valign="bottom">
  <TD style="border-bottom: #000000 1px solid" nowrap align="left">Exhibit<BR>Number</TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid" nowrap
align="center">Description</TD>
 </TR>
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<DIV style="margin-left: 0px; text-indent: 0px">99.1 </DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Press Release, dated March&nbsp;4, 2009.</TD>
 </TR>
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<P style="font-size: 10pt" align="center">&nbsp;

<P style="display: none; font-size: 10pt" align="center">3
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{"company-data": {"conformed-name": "Allis Chalmers Energy Inc.", "cik": "0000003982", "assigned-sic": "1389", "irs-number": "390126090", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-02199", "film-number": "09653781"}, "business-address": {"street1": "5075 WESTHEIMER", "street2": "SUITE 890", "city": "HOUSTON", "state": "TX", "zip": "77056", "phone": "713-369-0550"}, "mail-address": {"street1": "5075 WESTHEIMER", "street2": "SUITE 890", "city": "HOUSTON", "state": "TX", "zip": "77056"}, "former-company": [{"former-conformed-name": "ALLIS CHALMERS CORP", "date-changed": "19920703"}, {"former-conformed-name": "ALLIS CHALMERS MANUFACTURING CO", "date-changed": "19710614"}]}
Form 8-K
UNITED STATES
SECURITIES AND
EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest
event reported): March 4, 2009
ALLIS-CHALMERS ENERGY
INC.
(Exact name of registrant as
specified in its charter)
Delaware
001-02199
39-0126090
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
5075 Westheimer
Suite
890
Houston, Texas
77056
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number,
including area code:
(713) 369-0550
(Former name or former address if changed since last report.)
Check the appropriate box below if the
Form 8-K filing is intended to simultaneously satisfy the filing obligation of
the registrant under any of the following provisions:
o
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
o
Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.02 Results of Operations
and Financial Condition.
Item 7.01 Regulation FD
Disclosure.
On March 4, 2009,
Allis-Chalmers Energy Inc. (the "Company") announced earnings
results for the fourth quarter and fiscal year ended December 31, 2008. A
copy of the Company's press release is attached as Exhibit 99.1.
The exhibit described
above is not being "filed" for purposes of Section 18 of the
Securities Exchange Act of 1934, as amended, but is being furnished solely to
comply with Item 2.02 of Form 8-K and Regulation FD promulgated by
the Securities and Exchange Commission.
Item 9.01. Financial Statements
and Exhibits.
d) Exhibits
Exhibit
Number
Description
99.1
Press Release, dated March 4, 2009.
SIGNATURES
Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
ALLIS-CHALMERS ENERGY INC.
Date: March 3, 2009
By:
/s/ Theodore F. Pound III
Name: Theodore F. Pound III
Title: General Counsel & Secretary
EXHIBIT INDEX
Exhibit
Number
Description
99.1
Press Release, dated March 4, 2009.