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Sterling Resources Announces Results of Final Well of Cladhan Appraisal Program

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CALGARY, Alberta, June 3, 2011 /PRNewswire-FirstCall/ -- Sterling Resources Ltd. ("Sterling" or the "Company") (TSXV: SLG) announces the completion of drilling of the 210/30a-4X well on Block 210/30a in the United Kingdom North Sea. This is the fourth well (third side-track) drilled in the current four well campaign to further appraise the extent of the Cladhan reservoir.

The 210/30a-4X well was drilled in the most southern limit of the northern core area in a potentially separate channel, utilizing the Transocean Prospect rig. The objectives of the 210/30a-4X sidetrack well were to core the full reservoir section approximately one kilometre south and approximately 60 feet updip of the oil bearing 210/30a-4 well, and evaluate the southern fringe of the northern core area.

The 210/30a-4X well was drilled to a total measured depth (MD) of 10,614 feet encountering 171 feet gross, 105 feet net (vertical thickness) of high quality Upper Jurassic sands. Almost 180 feet of core was successfully recovered across the full reservoir section.

Petrophysical analysis of the interval showed five feet of oil-bearing sand at the top of the interval with an Oil-Down-To at 10,177 feet True Vertical Depth Subsea (TVDSS). An oil sample was obtained from the interval. A further 100 feet of water-bearing sand was encountered below thin shale which separates the top and bottom sands. A clear contact has not been observed although the top and bottom sands appear to be in pressure communication. The presence of a known Oil-Down-To bodes well for updip oil in other channels with the same pressure regime.

Generally, reservoir quality is very good with porosities up to 25 percent, substantiated by measurements obtained while taking fluid samples. These pressure measurements also confirm that the interval is over-pressured on trend with the 210/30a-4Y well, but some 900 psi lower than the discovery area. The implication of this information is that the southern fringe of the northern channel area is in communication with the central channel, being distinct from the main reservoir in the northern channel area. The well will be suspended for possible re-use as a future development well at this location or elsewhere after a sidetrack. With the completion of this four well drilling campaign, RPS Energy will start a review of the Cladhan resources with the intent of publishing an update report within a few weeks.

"Notwithstanding the presence of predominantly wet sands at this depth in this separate channel compartment, we are encouraged by the presence of oil in the top sand and by reservoir quality at this location. Further updip prospectivity is certainly promising," remarked John Rapach, Sterling's Chief Operating Officer. "We have proved that our current seismic model can adequately predict sand thickness but reservoir quality definition is now paramount for further appraisal and development drilling. Our next planned subsurface activity is to complete full reprocessing and interpretation of the existing seismic dataset incorporating all of the log, core, fluid and pressure results obtained during this current drilling campaign. Consequently, the next drilling campaign will probably commence in early 2012," noted Mr. Rapach.

"Our development planning is concentrating on either a subsea tie-back or FPSO development of the main northern core area with further definition of reserves and resources during our next drilling campaign. We are commencing pipeline route and environmental survey work within the next few weeks," added Mr. Rapach.

Mike Azancot, Sterling's Chief Executive Officer, commenting on these results noted that: "The current exploration and appraisal drilling campaign on Cladhan has been successful in increasing the height of the oil column by 798 feet to 1228 feet in total. The extent of the development of the northern core area is now better defined with this increase in oil column. The fan area in the east of the field remains prospective as the results from the 210/30a-4Z well drilled in this campaign are not conclusive due to its proximity to a major fault. Our plan towards development with options for increased resource exploitation after further drilling is now underway with a target for first oil in 2014."

Sterling holds a 39.9% interest in license P1064 which contains Cladhan, and is the operator. The partners are Wintershall (UK North Sea) Ltd. with 33.5 percent, Encore Petroleum Ltd with 16.6 percent and Dyas UK Ltd with 10.0 percent.

Sterling Resources Ltd. is a Canadian-listed international oil and gas company headquartered in Calgary, Alberta with assets in the United Kingdom, Romania, France and the Netherlands. The shares are listed and posted for trading on the TSX Venture Exchange under the symbol "SLG".

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Filer Profile No. 00002072

Forward-Looking Statements

All statements included in this press release that address activities, events or developments that Sterling expects, believes or anticipates will or may occur in the future are forward-looking statements. In addition, statements relating to reserves or resources are deemed to be forward-looking statements as they involve the implied assessment, based on certain estimates and assumptions that the reserves and resources described can be profitably produced in the future.

These forward-looking statements involve numerous assumptions made by Sterling based on its experience, perception of historical trends, current conditions, expected future developments and other factors it believes are appropriate in the circumstances. In addition, these statements involve substantial known and unknown risks and uncertainties that contribute to the possibility that the predictions, forecasts, projections and other-forward looking statements will prove inaccurate, certain of which are beyond Sterling's control, including: the impact of general economic conditions in the areas in which Sterling operates, civil unrest, industry conditions, changes in laws and regulations including the adoption of new environmental laws and regulations and changes in how they are interpreted and enforced, increased competition, the lack of availability of qualified personnel or management, fluctuations in commodity prices, foreign exchange or interest rates, stock market volatility and obtaining required approvals of regulatory authorities. In addition there are risks and uncertainties associated with oil and gas operations. Readers should also carefully consider the matters discussed under the heading "Risk Factors" in the Company's Annual Information Form.

Undue reliance should not be placed on these forward-looking statements, as there can be no assurance that the plans, intentions or expectations upon which they are based will occur. Sterling's actual results, performance or achievements could differ materially from those expressed in, or implied by, these forward-looking statements. These statements speak only as of the date of the press release. Sterling does not intend and does not assume any obligation to update these forward-looking statements except as required by law.

Financial outlook information contained in this press release about prospective results of operations, financial position or cash flows is based on assumptions about future events, including economic conditions and proposed courses of action, based on management's assessment of the relevant information currently available. Readers are cautioned that such financial outlook information contained in this press release should not be used for purpose other than for which it is disclosed herein.

For further information:

visit http://www.sterling-resources.com or contact:

Mike Azancot, President and Chief Executive Officer, Phone: +44-7740-432883, mike.azancot@sterling-resources.com

David Blewden, Chief Financial Officer, Phone: +44-1330-826766, Mobile: +44-7771-740804, david.blewden@sterling-resources.com.

George Kesteven, Manager, Corporate and Investor Relations, Phone: +1(403)-215-9265, Fax: +1(403)-215-9279, george.kesteven@sterling-resources.com

SOURCE Sterling Resources Ltd.



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