SOURCE: Tri-Valley Corporation

February 09, 2007 13:43 ET

Tri-Valley May Have New Zone Discovery at South Belridge

BAKERSFIELD, CA -- (MARKET WIRE) -- February 9, 2007 -- During the course of its on-going program to further define and prove up its Temblor Valley West Property, Tri-Valley Corporation (AMEX: TIV) has just encountered 104 feet of high porosity hydrocarbon bearing zone in its third development test well, the Lundin-Weber D-340-30. The Temblor is adjoining the South Belridge Oilfield, some 40 miles west of Bakersfield, California.

The new zone appears to be a younger section of the productive Diatomite formation and, while its characteristics are similar to the older and well-known producing zones in the field, this particular zone is not yet known to be producing anywhere else in the entire adjoining oil fields.

"We are excited over this new zone which may provide yet another producing horizon and extension of our original mapped area of closure on Tri-Valley's Temblor Valley West property and the additional westerly lease positions," said Paul Hacker, Senior Geologist for the Company.

Tri-Valley has submitted its logs from this new formation to NuTech Energy Alliance of Houston, Texas for interpretation with their state-of-the-art tool, NuLook Textural Vision. Sidewall cores have been analyzed by Core Lab with results indicating to be similar to the productive diatomaceous zones within the South Belridge Oilfield boundaries.

With daily production approximately 100,000 barrels per day, South Belridge is the third highest producing oilfield in the 48 contiguous United States and Tri-Valley believes its producing Temblor property on the west flank has substantial additional resources in both current producing and new horizons.

The Company is in its 44th year of business as a successful operating company and for 33 years has been a full reporting 12 (g) publicly traded Delaware Corporation. Tri-Valley Corporation stock is publicly traded on the American Stock Exchange under the symbol "TIV." Our company website, which includes all SEC filings, is

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 September 30, 2006, and the annual report on Form 10-K for the year ended December 31, 2005.

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