FORM 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Report of Foreign Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
For the month of May, 2007
Commission File Number: 001-12102
YPF Sociedad Anónima
(Exact name of registrant as specified in its charter)
Av. Pte. R.S. Peña 777 – 8th Floor
1354 Buenos Aires, Argentina
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file
annual reports under cover of Form 20-F or Form 40-F:
Form 20-F X Form 40-F
Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(1):
Yes No X
Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(7):
Yes No X
Indicate by check mark whether by furnishing the information
contained in this Form, the Registrant is also thereby furnishing the information to the Commission
pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:
Yes No X
If “Yes” is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): N/A
YPF Sociedad Anónima
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Table dated May 31, 2007 detailing changes in the oil and gas reserves of YPF SA of the years 2006, 2005 and 2004 |
Buenos Aires, May 31, 2007
To the
Buenos Aires Stock Exchange
National Securities Commission of Argentina
Ref. Oil and gas reserves
Please find attached a table with a detail of the changes in the oil and gas reserves of YPF SA of the years 2006, 2005 and 2004, which shall be reported to the New York Stock Exchange York (NYSE) in the annual report of the year 2006 under a 20F format.
Sincerely yours.
By YPF S.A.
Walter Forwood
Economic - Financial Director
| Crude Oil (1) | Natural Gas | Combined (2) | ||||
| (millions of barrels) |
(Bcf) | (boe in millions) | ||||
| Proved Developed and Undeveloped Reserves |
||||||
| Reserves at December 31, 2003 |
1202 | 6449 | 2351 | |||
| Revisions of previous estimates (3) |
-21 | -137 | -45 | |||
| Extensions, discoveries and improved recovery |
34 | 115 | 55 | |||
| Sales of reserves in place |
-5 | -45 | -13 | |||
| Production for the year |
-146 | -706 | -272 | |||
| Reserves at December 31, 2004 |
1064 | 5676 | 2076 | |||
| Revisions of previous estimates (3) |
-175 | -355 | -239 | |||
| Extensions, discoveries and improved recovery |
22 | 30 | 27 | |||
| Production for the year |
-134 | -668 | -253 | |||
| Reserves at December 31, 2005 |
777 | 4683 | 1611 | |||
| Revisions of previous estimates (3) |
9 | -63 | -2 | |||
| Extensions, discoveries and improved recovery |
20 | 46 | 29 | |||
| Production for the year |
-126 | -651 | -242 | |||
| Reserves at December 31, 2006 |
680 | 4015 | 1396 | |||
| Proved Developed Reserves |
||||||
| At December 31, 2003 |
984 | 4226 | 1737 | |||
| At December 31, 2004 |
863 | 4045 | 1582 | |||
| At December 31, 2005 |
604 | 3201 | 1174 | |||
| At December 31, 2006 |
521 | 2571 | 979 | |||
| (1) | Includes crude oil, condensate and natural gas liquids. |
| (2) | Volumes of natural gas in the table above and elsewhere in this annual report have been converted to boe at 5.615 mcf per barrel. |
| (3) | Revisions in estimates of reserves are performed at least once a year. Revision of crude oil and natural gas proved reserves are considered prospectively in the calculation of depreciation. |
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, thereunto duly authorized.
| YPF Sociedad Anónima | ||||
| Date: June 4, 2007 |
By: | /s/ Walter Cristian Forwood | ||
| Name: | Walter Cristian Forwood | |||
| Title: | Chief Financial Officer | |||