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&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;NOTE 1 -
ORGANIZATION AND BUSINESS&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The United
States Oil Fund, LP (&amp;#x201C;USOF&amp;#x201D;) was organized as a limited
partnership under the laws of the state of Delaware on May&amp;#xA0;12,
2005. USOF is a commodity pool that issues limited partnership
units (&amp;#x201C;units&amp;#x201D;) that may be purchased and sold on the
NYSE Arca, Inc. (the &amp;#x201C;NYSE Arca&amp;#x201D;). Prior to
November&amp;#xA0;25, 2008, USOF&amp;#x2019;s units traded on the American
Stock Exchange (the &amp;#x201C;AMEX&amp;#x201D;). USOF will continue in
perpetuity, unless terminated sooner upon the occurrence of one or
more events as described in its&amp;#xA0;Fifth Amended and Restated
Agreement of Limited Partnership dated as of October&amp;#xA0;13, 2008
(the &amp;#x201C;LP Agreement&amp;#x201D;). The investment objective of USOF
is for the changes in percentage terms of its units&amp;#x2019; net
asset value to reflect the changes in percentage terms of the spot
price of light, sweet crude oil delivered to Cushing, Oklahoma, as
measured by the changes in the price of the futures contract for
light, sweet crude oil traded on the New York Mercantile Exchange
(the &amp;#x201C;NYMEX&amp;#x201D;) that is the near month contract&amp;#xA0;to
expire, except when the near month contract is within
two&amp;#xA0;weeks of expiration, in which case the futures contract
will be the next month contract to expire, less USOF&amp;#x2019;s
expenses.&amp;#xA0;USOF accomplishes its objective through investments
in&amp;#xA0;futures contracts for light, sweet crude oil and other
types of crude oil, heating oil, gasoline, natural gas and other
petroleum-based fuels that are traded on the NYMEX, ICE Futures or
other U.S. and foreign exchanges&amp;#xA0;(collectively, &amp;#x201C;Oil
Futures Contracts&amp;#x201D;) and other oil-related investments such as
cash-settled options on Oil Futures Contracts, forward contracts
for oil, cleared swap contracts and over-the-counter transactions
that are based on the price of crude oil, heating oil, gasoline,
natural gas and other petroleum-based fuels, Oil Futures Contracts
and indices based on the foregoing (collectively, &amp;#x201C;Other Oil
Interests&amp;#x201D;). As of September&amp;#xA0;30, 2010, USOF held 13,293
Oil Futures Contracts for light, sweet crude oil traded on the
NYMEX and 10,000 Oil Futures Contracts for light, sweet crude oil
traded on the ICE Futures.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;USOF commenced
investment operations on April&amp;#xA0;10, 2006 and has a fiscal year
ending on December&amp;#xA0;31. United States Commodity Funds LLC (the
&amp;#x201C;General Partner&amp;#x201D;) is&amp;#xA0;responsible for the
management of USOF. The General Partner is a member of
the&amp;#xA0;National Futures Association (the
&amp;#x201C;NFA&amp;#x201D;)&amp;#xA0;and became&amp;#xA0;a commodity pool operator
registered with the Commodity Futures Trading Commission (the
&amp;#x201C;CFTC&amp;#x201D;) effective December&amp;#xA0;1, 2005. The General
Partner is also the general partner of the United States Natural
Gas Fund, LP (&amp;#x201C;USNG&amp;#x201D;),&amp;#xA0;the United States 12 Month
Oil Fund, LP (&amp;#x201C;US12OF&amp;#x201D;), the United States Gasoline
Fund, LP (&amp;#x201C;UGA&amp;#x201D;) and the United States Heating Oil
Fund, LP (&amp;#x201C;USHO&amp;#x201D;), which listed their limited
partnership units on the AMEX under the ticker
symbols&amp;#xA0;&amp;#x201C;UNG&amp;#x201D; on April&amp;#xA0;18, 2007,
&amp;#x201C;USL&amp;#x201D;&amp;#xA0;on December&amp;#xA0;6, 2007, &amp;#x201C;UGA&amp;#x201D;
on February&amp;#xA0;26, 2008 and &amp;#x201C;UHN&amp;#x201D; on April&amp;#xA0;9,
2008, respectively. As a result of the acquisition of the AMEX by
NYSE Euronext, each of USNG&amp;#x2019;s, US12OF&amp;#x2019;s, UGA&amp;#x2019;s
and USHO&amp;#x2019;s units commenced trading on the NYSE Arca on
November&amp;#xA0;25, 2008. The General Partner is also the general
partner of the United States Short Oil Fund, LP
(&amp;#x201C;USSO&amp;#x201D;), the United States 12 Month Natural Gas Fund,
LP (&amp;#x201C;US12NG&amp;#x201D;) and the United States Brent Oil Fund, LP
(&amp;#x201C;USBO&amp;#x201D;), which listed their limited partnership units
on the NYSE Arca under the ticker symbols &amp;#x201C;DNO&amp;#x201D; on
September&amp;#xA0;24, 2009, &amp;#x201C;UNL&amp;#x201D; on November&amp;#xA0;18,
2009 and &amp;#x201C;BNO&amp;#x201D; on June&amp;#xA0;2, 2010, respectively. The
General Partner is also the sponsor of the United States Commodity
Index Fund (&amp;#x201C;USCI&amp;#x201D;) which listed its units on the NYSE
Arca under the ticker symbol &amp;#x201C;USCI&amp;#x201D; on August&amp;#xA0;10,
2010.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The
accompanying unaudited condensed financial statements have been
prepared in accordance with Rule 10-01 of Regulation S-X
promulgated by the U.S. Securities and Exchange Commission (the
&amp;#x201C;SEC&amp;#x201D;)&amp;#xA0;and, therefore, do not include all
information and footnote disclosure required under accounting
principles generally accepted in the United States of America
(&amp;#x201C;GAAP&amp;#x201D;).&amp;#xA0;The financial information included
herein is unaudited; however, such financial information reflects
all adjustments which are, in the opinion of management, necessary
for the fair presentation of the condensed financial statements for
the interim period.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;USOF issues
units to certain authorized purchasers (&amp;#x201C;Authorized
Purchasers&amp;#x201D;) by offering baskets consisting of 100,000 units
(&amp;#x201C;Creation Baskets&amp;#x201D;)&amp;#xA0;through ALPS Distributors,
Inc., as the marketing agent (the &amp;#x201C;Marketing Agent&amp;#x201D;).
The purchase price for a Creation Basket is based upon the net
asset value of a&amp;#xA0;unit calculated shortly after the close of
the core trading session on the NYSE Arca on the day the order to
create the basket is properly received.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px; FONT-SIZE: 1px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In addition,
Authorized Purchasers pay USOF a $1,000 fee for each order placed
to&amp;#xA0;create one or more Creation Baskets or to redeem one or
more baskets consisting of 100,000 units (&amp;#x201C;Redemption
Baskets&amp;#x201D;).&amp;#xA0;Units may be purchased or sold on a
nationally recognized securities exchange in smaller increments
than a Creation Basket or Redemption Basket. Units purchased or
sold on a nationally recognized securities exchange are not
purchased or sold at the net asset value of USOF but rather at
market prices quoted on such exchange.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px" align="justify"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;In April 2006,
USOF initially registered 17,000,000 units on Form S-1 with the
SEC. On April&amp;#xA0;10, 2006, USOF listed its units on the AMEX
under the ticker symbol &amp;#x201C;USO&amp;#x201D;. On that day,&amp;#xA0;USOF
established its initial net asset value by setting the price at
$67.39 per unit and issued 200,000 units in exchange for
$13,479,000. USOF also commenced investment operations on
April&amp;#xA0;10, 2006, by purchasing Oil Futures Contracts traded on
the NYMEX&amp;#xA0;based on&amp;#xA0;light, sweet crude oil. As of
September&amp;#xA0;30, 2010, USOF had registered a total of
1,627,000,000 units.&lt;/font&gt;&lt;/p&gt;
&lt;/div&gt;</NonNumbericText>
          <NonNumericTextHeader>NOTE 1 -
ORGANIZATION AND BUSINESS

The United
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name FASB Staff Position (FSP)
 -Number FAS140-4 and FIN46(R)-8
 -Paragraph 8, C1, C7

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher AICPA
 -Name Accounting Research Bulletin (ARB)
 -Number 51
 -Paragraph 2-6

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher AICPA
 -Name Statement of Position (SOP)
 -Number 94-6
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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 -Name FASB Interpretation (FIN)
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