<SEC-DOCUMENT>0000950103-12-001583.txt : 20120329
<SEC-HEADER>0000950103-12-001583.hdr.sgml : 20120329
<ACCEPTANCE-DATETIME>20120329111641
ACCESSION NUMBER:		0000950103-12-001583
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120329
FILED AS OF DATE:		20120329
DATE AS OF CHANGE:		20120329

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:		12722747

	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>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>dp29608_6k.htm
<DESCRIPTION>FORM 6-K
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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 16pt; FONT-WEIGHT: bold">SECURITIES AND EXCHANGE COMMISSION</font></div>

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

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

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

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<div style="TEXT-ALIGN: left; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Re.</font>: YPF - Preliminary results of exploratory well on conventional oil formations, Vizcacheras Oeste X-2, in the Mendoza Province</font></div>
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<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Dear Sirs:</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font></div>

<div style="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">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="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">We hereby inform you that, under our annual exploration program, we have drilled the Vizcacheras Oeste X-2 exploratory well located in the Vizcacheras block, in the Mendoza Province.</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font></div>

<div style="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">The objective of the Vizcacheras Oeste X-2 well consisted in evaluating the presence and productivity of conventional hydrocarbons in the Papagayos formation with a depth of 2,140 meters and confirming the proposed prospective model. Said well started its production with an initial average daily volume of 270 barrels of oil of 28&#176; API quality within a 10 meters section of the formation.</font></div>

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<div style="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">The positive results obtained allow us to extend the estimate of the prospective area of Vizcacheras in approximately 30 Km2, with expected resources totaling 20 million barrels of oil equivalent in this area in the Mendoza Province.<font style="FONT-SIZE: 70%; VERTICAL-ALIGN: text-top">1</font></font></div>

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<div style="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">This conventional oil discovery, together with the one communicated on January 5, 2012 in the Chachachuen block, represents a total resources addition of 60 million barrels of oil equivalent in the Mendoza Province.<font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: text-top">1</font></font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font></div>

<div style="TEXT-INDENT: 99pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Since the project is in its initial stage we do not yet have enough information to quantify the related reserves.</font></div>

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<div style="TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Yours faithfully,</font></div>

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<div style="TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: text-top">1</font> These resources do not constitute proved reserves to date and they will only be recognized as such when they comply with formal criteria requested by the National Securities Commission (&#8220;Comisi&#243;n Nacional de Valores&#8221;) and the Securities and Exchange Commission.</font></div>

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