COP Circle Oil

TIDMCOP

RNS Number : 2761N

Circle Oil PLC

31 August 2011

31 August 2011

CIRCLE OIL PLC

("Circle" or the "Company")

Operating Update Egypt

Circle Oil Plc (AIM: COP), the international oil and gas exploration, development and production company, is pleased to announce the following update regarding the Geyad-5X water injection well drilled to support production in the Geyad Field.

Geyad-5X

Geyad-5X, located to the south-west of the field and downdip of the Geyad-1X ST discovery well in the Geyad Development Lease, was drilled to 7,350 ft MD in the Upper Rudeis. The main objective for this well was to appraise the Shagar and Rahmi sandstones of the Kareem Formation in a downdip location and to provide water injection to support oil production from the updip Geyad field wells. The Shagar sands were encountered with 15 ft MD of net reservoir, an average porosity of 14% and perforations made between 6,510 and 6,525 ft MD. The Rahmi sands were encountered with 15 ft MD of net reservoir, an average of 13% porosity and perforations made between 6,583 and 6,899 ft MD. As expected, below the field oil-water contact both sands were found to be water bearing. The well has been completed as an injector.

The rig has now been mobilised to drill the water injector well Al Ola-2, located on the south-eastern flank of the Al Amir SE field, downdip of the Al Ola-1X producer. The well is planned to appraise both the Shagar and Rahmi sands for injection in that location.

The NW Gemsa Concession, containing the Al Amir and Geyad Development Leases, covering an area of over 260 square kilometres, lies about 300 kilometres southeast of Cairo in a partially unexplored area of the Gulf of Suez Basin. The concession agreement includes the right of conversion to a production licence of 20 years, plus extensions, in the event of commercial discoveries. The NW Gemsa Concession partners include: Vegas Oil and Gas (50% interest and operator); Circle Oil Plc (40% interest); and Sea Dragon Energy (10% interest).

Prof Chris Green, CEO, said

"I am pleased to report another successful result as the partnership's plans in NW Gemsa continue on schedule. The rig will now move to start drilling the Al Ola-2 injector well situated on the Al Amir SE field. The water injection programme is part of the continuing plan to increase production rates for the medium and long term."

Glossary

MD Measured Depth

ft Feet

In accordance with the guidelines of the AIM Market of the London Stock Exchange, Professor Chris Green, Chief Executive Officer of Circle Oil Plc, an explorationist and geophysicist with over thirty years oil & gas industry experience, and Dr Stuart Harker, VP Geology, also with over 30 years experience, are the qualified persons as defined in the London Stock Exchange's Guidance Note for Mining and Oil and Gas companies, who have reviewed and approved the technical information contained in this announcement. Professor Green and Dr Harker have relied on primary information supplied by the operator in carrying out their review.

For further information contact:

Circle Oil Plc (+44 20 7638 9571)

Professor Chris Green, CEO

Evolution Securities (+44 20 7071 4300)

Chris Sim

Neil Elliot

Fox-Davies Capital (+44 20 3463 5010)

Daniel Fox-Davies

Richard Hail

Citigate Dewe Rogerson (+44 20 7638 9571)

Martin Jackson

Kate Lehane

Murray Consultants (+353 1 498 0300)

Joe Murray

Joe Heron

Notes to Editors

Circle Oil Plc (AIM: COP) is an international oil & gas exploration, development and production Company with an expanding portfolio of assets in Morocco, Tunisia, Oman and Egypt with a combination of low-risk near-term production and significant exploration upside potential. The Company listed on AIM in October 2004.

Internationally, the Company has continued to expand its portfolio over the past two years and now has assets in the Rharb Basin, Morocco; the Ras Marmour Permit in southern Tunisia; the Mahdia Permit offshore Tunisia; the Grombalia Permit in northern Tunisia and the Zeit Bay area of Egypt. Circle also has the largest licence holding of any company in Oman. In addition to its prospective Block 52 offshore, Circle also has an ongoing exploration programme in Block 49 onshore.

Circle's strategy is to locate and secure additional licences in prospective hydrocarbon provinces and through targeted investment programmes, monetise the value in those assets for the benefit of shareholders. This could be achieved through farm-outs to selected partners who would then invest in and continue the development of the asset into production, or Circle may itself opt to use its own expertise to appraise reserves and bring assets into production, generating sustained cash flow for further investment.

Further information on Circle is available on its website at www.circleoil.net.

This information is provided by RNS

The company news service from the London Stock Exchange

END

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