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<TITLE>8-K for ONEOK Partners  (576238-2).DOC</TITLE>


<META NAME="subject" CONTENT="576238;2">


<META NAME="_AdHocReviewCycleID" CONTENT="-1993874716">


<META NAME="_EmailSubject" CONTENT="NBP 8-K">


<META NAME="_AuthorEmail" CONTENT="Marcia.Anderson@NBORDER.COM">


<META NAME="_AuthorEmailDisplayName" CONTENT="Anderson, Marcia K.">


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<FONT SIZE=4><P ALIGN="CENTER">SECURITIES AND EXCHANGE COMMISSION</P>


<P ALIGN="CENTER">Washington, D.C. 20549</P>


<P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">FORM 8-K</P>


</B><P ALIGN="CENTER"></P>


<P ALIGN="CENTER">CURRENT REPORT</P>


<P ALIGN="CENTER">PURSUANT TO SECTION 13 OR 15(d) OF THE</P>


<P ALIGN="CENTER">SECURITIES EXCHANGE ACT OF 1934</P>


<P ALIGN="CENTER"></P></FONT>


<P ALIGN="CENTER"><CENTER><TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=390>


<TR><TD WIDTH="65%" VALIGN="TOP">


<FONT SIZE=2><P>(Date of report)</FONT></TD>


<TD WIDTH="35%" VALIGN="TOP">


<B><P>June 5, 2006 </B></TD>


</TR>


<TR><TD WIDTH="65%" VALIGN="TOP">


<FONT SIZE=2><P>(Date of earliest event reported)</FONT></TD>


<TD WIDTH="35%" VALIGN="TOP">


<B><P>May 31, 2006</B></TD>


</TR>


</TABLE>


</CENTER></P>





<P ALIGN="CENTER"></P>


<B><FONT SIZE=5><P ALIGN="CENTER">ONEOK PARTNERS, L.P.</P>


</B></FONT><FONT SIZE=2><P ALIGN="CENTER">(Exact name of registrant as specified in its charter)</P>


</FONT><P ALIGN="CENTER"></P>


<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=698>


<TR><TD WIDTH="30%" VALIGN="TOP" HEIGHT=19>


<B><P ALIGN="CENTER">Delaware</B></TD>


<TD WIDTH="6%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="31%" VALIGN="TOP" HEIGHT=19>


<B><P ALIGN="CENTER">1-12202</B></TD>


<TD WIDTH="5%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="28%" VALIGN="TOP" HEIGHT=19>


<B><P ALIGN="CENTER">93-1120873</B></TD>


</TR>


<TR><TD WIDTH="30%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">(State or other jurisdiction</FONT></TD>


<TD WIDTH="6%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="31%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">(Commission</FONT></TD>


<TD WIDTH="5%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="28%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">(IRS Employer</FONT></TD>


</TR>


<TR><TD WIDTH="30%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">of incorporation)</FONT></TD>


<TD WIDTH="6%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="31%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">File Number)</FONT></TD>


<TD WIDTH="5%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="28%" VALIGN="TOP" HEIGHT=19>


<FONT SIZE=2><P ALIGN="CENTER">Identification No.)</FONT></TD>


</TR>


</TABLE>





<P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">100 West Fifth Street; Tulsa, OK</P>


</B><FONT SIZE=2><P ALIGN="CENTER">(Address of principal executive offices)</P>


</FONT><P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">74103-4298</P>


</B><P ALIGN="CENTER">(Zip code)</P>


<P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">(918) 588-7000</P>


</B><FONT SIZE=2><P ALIGN="CENTER">(Registrant's telephone number, including area code)</P>


</FONT><P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">Not Applicable</P>


</B><FONT SIZE=2><P ALIGN="CENTER">(Former name or former address, if changed since last report)</P>


</FONT><FONT SIZE=3>


</FONT><FONT SIZE=2><P>[] Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>





<P>[] Soliciting material pursuant to Rule 14a-12 under the Securities Act (17 CFR 240.14a-12)</P>





<P>[] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>





<P>[] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>





</FONT><U><P>ITEM 1.01</U>&#9;<U>Entry into a Material Definitive Agreement</P>


</U><B><DIR>


<DIR>


<DIR>


<DIR>





</B><P>On May 31, 2006, we, through our subsidiary ONEOK Overland Pass Holdings, L.L.C. (&quot;OPH&quot;), completed and closed on the Purchase and Sale Agreement (the &quot;Purchase Agreement&quot;) with Williams Field Services Company, LLC (&quot;Williams&quot;), a subsidiary of The Williams Companies, Inc., that was previously disclosed on our Form 8-K report dated May 8, 2006.  Pursuant to the Purchase Agreement, OPH formed a joint venture with Williams by purchasing from Williams 99% of the outstanding membership interests in Overland Pass Pipeline Company, LLC (the &quot;Joint Venture&quot;).</P>





<P>In connection with the closing of the Purchase Agreement, the parties entered into an Amended and Restated Limited Liability Company Agreement (&quot;LLC Agreement&quot;) containing the terms and conditions upon which the Joint Venture will build a 750-mile natural gas liquids pipeline from Opal, Wyoming, in the southwestern part of the state, to the mid-continent natural gas liquids market center in Conway, Kansas (the &quot;Pipeline&quot;).  Initially, OPH will own 99 percent of the Joint Venture, and Williams will own the remaining 1 percent, with Williams having the option to increase its ownership to 50 percent and become operator within two years of the pipeline becoming operational.  </P>





<P>Subject to the terms of the LLC Agreement, OPH will make the loans or contributions of cash, property or services necessary to place the Pipeline into service.  The project requires the approval of various state and federal regulatory agencies and governments.  The project is estimated to cost approximately $450 million. </P>


</DIR>


</DIR>


</DIR>


</DIR>





<U><P>ITEM 7.01</U>&#9;<U>REGULATION FD DISCLOSURE</U>.</P>


<DIR>


<DIR>


<DIR>


<DIR>





<P>On June 1, 2006, we issued a press release announcing the closing of the agreement to form the Joint Venture referenced in this Form 8-K, a copy of which is furnished and attached as Exhibit 99.1 hereto and is incorporated into this Item 7.01 by reference.</P>


<U></DIR>


</DIR>


</DIR>


</DIR>





<P>ITEM 9.01</U>&#9;<U>FINANCIAL STATEMENTS AND EXHIBITS</U>.</P>


<DIR>


<DIR>


<DIR>


<DIR>





<P>Exhibits</P>


<P>99.1   Press Release issued by ONEOK Partners, L.P. June 1, 2006.</P>


<B><P ALIGN="CENTER"></P>


<P ALIGN="CENTER">&nbsp;</P></DIR>


</DIR>


</DIR>


</DIR>





</B><P ALIGN="CENTER">2</P>


<P ALIGN="CENTER"></P>


<P ALIGN="CENTER">&nbsp;</P>


<P ALIGN="CENTER">&nbsp;</P>


<P ALIGN="CENTER">&nbsp;</P>


<P ALIGN="CENTER">&nbsp;</P>


<B><P ALIGN="CENTER">SIGNATURE</P>


</B>


<P>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.</P>





<P>&nbsp;</P><DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>





<P>ONEOK PARTNERS, L.P<B>.</P>


</B><P>By:  ONEOK Partners GP, L<B>.</B>L.C.<B>&#9;&#9;</P>


</B></DIR>


</DIR>


</DIR>


</DIR>


</DIR>


</DIR>


</DIR>


</DIR>


</DIR>


</DIR>





<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=696>


<TR><TD WIDTH="9%" VALIGN="TOP" HEIGHT=20>


<P>Date:</TD>


<TD WIDTH="47%" VALIGN="TOP" HEIGHT=20>


<P>June 5, 2006</TD>


<TD WIDTH="7%" VALIGN="TOP" HEIGHT=20>


<P>By:</TD>


<TD WIDTH="37%" VALIGN="TOP" HEIGHT=20>


<U><P>/s/ John R. Barker</U></TD>


</TR>


<TR><TD WIDTH="9%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="47%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="7%" VALIGN="TOP" HEIGHT=19><P></P></TD>


<TD WIDTH="37%" VALIGN="TOP" HEIGHT=19>


<P>John R. Barker</P>


<P>Executive Vice President,</P>


<P>General Counsel and Secretary</TD>


</TR>


</TABLE>








<FONT SIZE=3><P ALIGN="CENTER">3</P></FONT></BODY>


</HTML>
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{"company-data": {"conformed-name": "ONEOK Partners LP", "cik": "0000909281", "assigned-sic": "4922", "irs-number": "931120873", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-12202", "film-number": "06886015"}, "business-address": {"street1": "100 WEST FIFTH STREET", "city": "TULSA", "state": "OK", "zip": "74103", "phone": "918-588-7000"}, "mail-address": {"street1": "100 WEST FIFTH STREET", "city": "TULSA", "state": "OK", "zip": "74103"}, "former-company": {"former-conformed-name": "NORTHERN BORDER PARTNERS LP", "date-changed": "19930719"}}
8-K for ONEOK Partners  (576238-2).DOC
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)
June 5, 2006
(Date of earliest event reported)
May 31, 2006
ONEOK PARTNERS, L.P.
(Exact name of registrant as specified in its charter)
Delaware
1-12202
93-1120873
(State or other jurisdiction
(Commission
(IRS Employer
of incorporation)
File Number)
Identification No.)
100 West Fifth Street; Tulsa, OK
(Address of principal executive offices)
74103-4298
(Zip code)
(918) 588-7000
(Registrant's telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)
[] Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[] Soliciting material pursuant to Rule 14a-12 under the Securities Act (17 CFR 240.14a-12)
[] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
ITEM 1.01
Entry into a Material Definitive Agreement
On May 31, 2006, we, through our subsidiary ONEOK Overland Pass Holdings, L.L.C. ("OPH"), completed and closed on the Purchase and Sale Agreement (the "Purchase Agreement") with Williams Field Services Company, LLC ("Williams"), a subsidiary of The Williams Companies, Inc., that was previously disclosed on our Form 8-K report dated May 8, 2006.  Pursuant to the Purchase Agreement, OPH formed a joint venture with Williams by purchasing from Williams 99% of the outstanding membership interests in Overland Pass Pipeline Company, LLC (the "Joint Venture").
In connection with the closing of the Purchase Agreement, the parties entered into an Amended and Restated Limited Liability Company Agreement ("LLC Agreement") containing the terms and conditions upon which the Joint Venture will build a 750-mile natural gas liquids pipeline from Opal, Wyoming, in the southwestern part of the state, to the mid-continent natural gas liquids market center in Conway, Kansas (the "Pipeline").  Initially, OPH will own 99 percent of the Joint Venture, and Williams will own the remaining 1 percent, with Williams having the option to increase its ownership to 50 percent and become operator within two years of the pipeline becoming operational.
Subject to the terms of the LLC Agreement, OPH will make the loans or contributions of cash, property or services necessary to place the Pipeline into service.  The project requires the approval of various state and federal regulatory agencies and governments.  The project is estimated to cost approximately $450 million.
ITEM 7.01
REGULATION FD DISCLOSURE
.
On June 1, 2006, we issued a press release announcing the closing of the agreement to form the Joint Venture referenced in this Form 8-K, a copy of which is furnished and attached as Exhibit 99.1 hereto and is incorporated into this Item 7.01 by reference.
ITEM 9.01
FINANCIAL STATEMENTS AND EXHIBITS
.
Exhibits
99.1   Press Release issued by ONEOK Partners, L.P. June 1, 2006.
2
SIGNATURE
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.
ONEOK PARTNERS, L.P
.
By:  ONEOK Partners GP, L
.
L.C.
Date:
June 5, 2006
By:
/s/ John R. Barker
John R. Barker
Executive Vice President,
General Counsel and Secretary
3