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 (Date of earliest event reported) May 29, 2003 TRI-VALLEY CORPORATION ---------------------- (Exact name of registrant as specified in its charter) DELAWARE 0-6119 84-0617433 --------------------------------------------------------------------------- (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification no.) 5555 Business Park South, Suite 200, Bakersfield, CA 93309 ------------------------------------------------------------------- (Address of principal executive office) (Zip code) Registrant's telephone number, including area code: (661) 864-0500 ----------------------------- ITEM 7 FINANCIAL STATEMENTS AND EXHIBITS ------- (c) Exhibits 99.1 Press Release dated May 29, 2003 BAKERSFIELD, CA, MAY 29, 2003 -- Tri-Valley Corporation (OTC BB: TRIL) Tri-Valley Corporation has received the log interpretation on its Sunrise-Mayel No. 2HR gas well from a worldwide independent engineering firm headquartered in Houston, Texas, which indicates a 65% greater extent of gross hydrocarbon saturation than the 2,000 feet (610 meters) originally reported in the Company's May 22, 2003 press release. The new information indicates that the full 3,300 feet (1,000 meters) of lateral bore with 70% hydrocarbon saturation previously reported has now been double verified. The Company has scheduled a one million pound hydraulic fracture of the entire 3,300-foot (1,000-meter) horizontal portion of the formation surrounding the wellbore for June 24, 2003. While the wellbore has yet to demonstrate commercial deliverability, the Company considers this measured increase and other positive measurements to be a material event. The Company advises that while the suite of mud, electric and density neutron logs and other indicators are believed to be reliable , they are inferred data which do not, in and of themselves, guarantee commercial success at this stage. THIS PRESS RELEASE CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE RISKS AND UNCERTAINTIES. ACTUAL RESULTS, EVENTS AND PERFORMANCE COULD VARY MATERIALLY FROM THOSE CONTEMPLATED BY THESE FORWARD-LOOKING STATEMENTS WHICH INCLUDES SUCH WORDS AND PHRASES AS EXPLORATORY, WILDCAT, PROSPECT, SPECULATES, UNPROVED, PROSPECTIVE, VERY LARGE, EXPECT, POTENTIAL, ETC. AMONG THE FACTORS THAT COULD CAUSE ACTUAL RESULTS, EVENTS AND PERFORMANCE TO DIFFER MATERIALLY ARE RISKS AND UNCERTAINTIES DISCUSSED IN THE COMPANY'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED MARCH 31, 2003, AND THE ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2002. SIGNATURES 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. TRI-VALLEY CORPORATION May 29, 2003 /s/ Thomas J. Cunningham --------------------------- Thomas J. Cunningham Chief Financial Officer