<SEC-DOCUMENT>0000950103-11-002796.txt : 20110714
<SEC-HEADER>0000950103-11-002796.hdr.sgml : 20110714
<ACCEPTANCE-DATETIME>20110713173211
ACCESSION NUMBER:		0000950103-11-002796
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110713
FILED AS OF DATE:		20110714
DATE AS OF CHANGE:		20110713

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			YPF SOCIEDAD ANONIMA
		CENTRAL INDEX KEY:			0000904851
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		IRS NUMBER:				521612271
		STATE OF INCORPORATION:			C1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12102
		FILM NUMBER:		11966400

	BUSINESS ADDRESS:	
		STREET 1:		AVENIDA PTE R SAENZ 777-8 PISO
		CITY:			BUENOS AIRES 1364 AR
		STATE:			C1
		BUSINESS PHONE:		5413267265

	MAIL ADDRESS:	
		STREET 1:		AVENIDA PTE R SAENZ 777-8 PISO
		CITY:			BUENOS AIRES
		STATE:			C1
</SEC-HEADER>
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<TYPE>6-K
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">SECURITIES AND EXCHANGE COMMISSION</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">Washington, D.C. 20549</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">the Securities Exchange Act of 1934</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">For the month of July, 2011</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Exact name of registrant as specified in its charter)</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">annual reports under cover of Form 20-F or Form 40-F:</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Indicate by check mark if the registrant is submitting the Form 6-K</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">in paper as permitted by Regulation S-T Rule 101(b)(1):</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Indicate by check mark if the registrant is submitting the Form 6-K</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">in paper as permitted by Regulation S-T Rule 101(b)(7):</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Letter to the Buenos Aires Stock Exchange dated July 13, 2011</font></div>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Buenos Aires, July 13, 2011.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Buenos Aires Stock Exchange</font></div>

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<table bgcolor="white" cellpadding="0" cellspacing="0" width="100%" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center"><font style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="DISPLAY: inline; FONT-WEIGHT: bold; TEXT-DECORATION: underline">Re.</font>: YPF &#8211; Preliminary results </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">exploratory well on unconventional </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">oil formations (shale oil)</font></font></div>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Dear Sirs:</font><br>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 90pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The purpose of this letter is to comply with the requirements of Chapter VII, Article 23 of the Regulations of the Buenos Aires Stock Exchange.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 90pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">We hereby inform you that, under our annual exploration program, we have drilled, through the Temporary Joint Venture (JV) where we hold a 70% share with Rovella Energy S.A. (15%) and G &amp; P of Neuqu&#233;n (15%), the exploratory well Bajada de A&#241;elo X-2 (BA X-2), located in the Bajada de A&#241;elo block of the Neuquina basin.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 90pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The objective of the well is to continue gathering information and appraisals on the Vaca Muerta formation, outside of the area of Loma La Lata. The well was drilled to a depth of 3000 meters, with 3 fractures made at 150 meters.</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 90pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The results of that well yielded a daily average production of approximately 250 barrels of oil per day of high quality (48&#176; API), in line with previous findings in this formation in the area of Loma La Lata. Thus, the positive results encourage the continued exploration planned for the Vaca Muerta formation in 2011.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 90pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Since the project is in its initial stage we do not yet have enough information to quantify the reserves.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Yours faithfully,</font></div>

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