(AIM: UJO)
Wressle-1 Extended Well Test Update - Results of
Egdon's RNS contained the following information:
During earlier initial testing, the Wressle-1 well produced oil and gas from three discrete reservoir intervals, the Ashover Grit, the Wingfield Flags, and the Penistone Flags as previously reported. At the end of those test operations, a completion was installed in the well to cater for a subsequent pumped EWT over the oil productive zones in the
Due to problems experienced with the downhole testing equipment, the pumped flow test of the Ashover Grit oil reservoir could not be undertaken first as originally planned, therefore test operations were switched to focus initially on the shallower Penistone Flags.
The Penistone Flags interval was pumped for a period of time and achieved average rates over a three day period of 131 barrels of oil per day ("bopd") and 222,000 cubic feet of gas per day, together totalling 168 barrels of oil equivalent per day ("boepd") with an average producing gas oil ratio ("GOR") of approximately 1,700 cubic feet of gas per barrel of oil ("scf/stb").
Due to increasing gas rates the pump was then stopped and the well allowed to naturally flow to surface on a series of decreasing choke sizes from 12/64" down to 8/64" (being the smallest available). Average rates over a two day period on the 8/64" choke were 105 bopd with 465,000 cubic feet of gas per day, together totalling 182 boepd with an average producing GOR of approximately 4,450 scf/stb.
During the course of this flow testing no associated formation water has been produced.
The gas production rate has increased to the point where it is approaching the limits allowed under the environmental permit and as such production from the interval has now been halted. The well is now being killed ready for the next operation to be conducted, an injection test over the Penistone Flags zone 3A interval, to provide further reservoir data.
On conclusion of this injection test, attention will return to resolving the operational issues and undertaking pumped oil production testing over the Ashover Grit interval.
Commenting on the latest flow test result,
"I am pleased to report the continuing encouraging results from the Wressle-1 test programme. The hydrocarbon production rate of over 180 barrels of oil equivalent per day attained from the Penistone Flags oil zone has exceeded pre-test expectations. The production performance together with the planned injection test will provide valuable reservoir engineering data that will be used to plan for a commercial development of the Penistone Flags.
We now look forward to commencing operations on the EWT programme for the Ashover Grit and will provide another update in due course."
For further information please contact the following:
For further information please contact the following:
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+44 (0) 77871 60682 |
Shore Capital Nominated Adviser Bidhi Bhoma Corporate Broking |
+44 (0) 20 7408 4090 |
SP Angel Joint Broker Richard Hail
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+44 (0) 20 3470 0470 |
Public Relations |
+44 (0) 7768 537 739 +44 (0) 7799 003 220 |
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Notes to Editors:
The Wressle Oil Discovery -The Wressle Prospect was defined on proprietary 3D seismic data, which was acquired by Egdon in
The Wressle-1 well reached a total depth (TD) of 2240 metres measured depth (MD) (1814 metres true vertical depth below OS datum (TVDSS)) on
Celtique Energie Petroleum Limited 33.33%
Europa Oil & Gas Limited 33.34%
Union Jack Oil plc 8.33%
The well was logged using measurement whilst drilling (MWD) logging tools run on the drill string. Petrophysical evaluation of the log data indicated the presence of potential hydrocarbon pay in three main intervals;
· Penistone Flags - up to 19.8 metres measured thickness (15.9 metres vertical thickness)
· Wingfield Flags - up to 5.64 metres measured thickness (5.1 metres vertical thickness)
· Ashover Grit - up to 6.1 metres measured thickness (5.8 metres vertical thickness)
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Operations at the Wressle site will not involve the process of high volume hydraulic 'fracking' for shale gas.
Evaluation of potential recoverable hydrocarbons has been assessed in accordance with 2007 Petroleum Resources Management System prepared by the
This information is provided by RNS