Oromin Explorations Ltd.
OTC Bulletin Board : OLEPF
TSX : OLE

Oromin Explorations Ltd.

June 16, 2010 09:30 ET

Oromin Explorations Ltd.: Update-Santa Rosa Oil and Gas Project

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 16, 2010) - Oromin Explorations Ltd. (TSX:OLE)(OTCBB:OLEPF) ("Oromin") is pleased to provide an update on the current status of and plans for its 100% owned Santa Rosa oil & gas concession in the Province of Mendoza, Argentina.

The Santa Rosa concession is a large mineral tenure comprising 7694 km2 situated over a geological dome structure centred 91 km east of the city of Mendoza. The Santa Rosa dome prospect is the only known major structure in the eastern region of the Cuyana Basin. The Cuyana Basin totals approximately 161,000 km2 and has hosted over 934 producing wells from 2440 total wells drilled. Initial recoverable reserves in 18 oil pools in the Tupungato and Cacheuta sub-basins – the northern portion of the Cuyana Basin – total 1.2 billion barrels. These reserves were found to the west and southwest of our Santa Rosa concession, and there are no known discoveries of commercial quantities of hydrocarbons on our concession.

In July 2009, Oromin drilled the well SREx-2001 on a postulated high point on the dome, and did not encounter hydrocarbons. However, information gained from the drilling of the 2009 well, from limited seismic work and from three prior regional wells drilled by other operators, suggests that Triassic sediments have been preserved to the south and southwest of the well location SREx-2001 and that these sediments provide opportunities for potential oil-bearing stratigraphic traps on the flanks of the dome.

Based on recommendations by its consultants, Oromin is seeking to farm out a portion of its interest in the concession to third parties, in consideration for their assuming 100% of the costs and risks of the next program. This proposed program includes additional two- and three-dimensional seismic work to better define the potential stratigraphic traps, followed by the drilling of one or more wells. The Company emphasizes that it is in the stage of marketing these proposed programs and does not have any agreements or confirmed expressions of interest in hand. An announcement will be made of the terms of any farm-in agreement or agreements, if and when such agreements may be reached.

On behalf of the Board of Directors of OROMIN EXPLORATIONS LTD.

Chet Idziszek, President and CEO

Cautionary Statement

This document contains "forward-looking statements" within the meaning of applicable Canadian securities regulations. All statements other than statements of historical fact herein, including, without limitation, statements regarding exploration plans and our other future plans and objectives, are forward-looking statements that involve various risks and uncertainties. Such forward-looking statements include, without limitation, estimates of exploration investment and the scope of exploration programs. There can be no assurance that such statements will prove to be accurate, and future events and actual results could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from our expectations are disclosed in the Company's documents filed from time to time via SEDAR with the Canadian regulatory agencies to whose policies we are bound. Forward-looking statements are based on the estimates and opinions of management on the date the statements are made, and we do not undertake any obligation to update forward-looking statements should conditions or our estimates or opinions change. Forward-looking statements are subject to risks, uncertainties and other factors, including risks associated with public markets, mineral and oil & gas exploration, price volatility in the commodities we seek, and operational and political risks. Readers are advised not to place undue reliance on forward-looking statements.

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