Cooper to Plug and Abandon Perlubie-2 Well

- Cooper to Plug and Abandon Perlubie-2 Well

Thursday, August 25, 2011
Cooper Energy Ltd.

Cooper announced that the Perlubie-2 appraisal/development well has been drilled to a total depth of 1366 mRT and wireline logs have been run and interpreted.

Perlubie-2 has encountered the Namur sandstone reservoir low to prognosis and logging has confirmed an oil column in Namur and McKinlay Member sandstone reservoirs. Due to the small height of the oil column, the well is not expected to recover sufficient oil to justify a completion and tie-in to the production system and therefore the PEL 92 JV has decided to plug and abandon the well.

The rig will be moved to Germein-1 well location as the next exploration well.

Oil & Gas Post

Promote Your Page Too
LINK

Sterling to Plug, Abandon Sangaw North Well

- Sterling to Plug, Abandon Sangaw North Well

Wednesday, July 06, 2011
Sterling Energy plc

Sterling provided the following update for the Sterling operated Sangaw North block in Kurdistan (53.33% working interest).

Flow testing operations have been completed in the cased hole section of the Sangaw North-1 well. Two flow tests were conducted; the first across a 100 meter interval within the Jurassic aged Sargelu formation and the second across a 100 meter interval within the Cretaceous aged Kometan formation.

During the first flow test, formation gas and water were observed in small quantities at surface but sustainable flow rates were not achieved. The Company believes that the Jurassic aged Sargelu formation does not contain a sufficient natural fracture network to support sustained flow.

During the second flow test, within the Cretaceous aged Kometan formation, the well flowed at a stabilized rate of approximately 0.4 million standard cubic feet of gas and 4,500 barrels of formation water per day during an 8 hour flow period through a 60/64ths inch choke with a wellhead pressure of 280 pounds per square inch. Approximately 83 percent of the produced gas was hydrocarbon gas with the remainder comprising 10 percent hydrogen sulphide and 7 percent carbon dioxide.

Neither flow test produced hydrocarbons at commercial rates and the Sangaw North-1 well will now be plugged and abandoned. The operations to plug and abandon the well are expected to take approximately 2 weeks, after which the drilling rig will be demobilized from the location.

The current exploration phase of the Production Sharing Contract for the Sangaw North area will expire in November 2011 and the joint venture partnership (Sterling, Addax and KNOC) may elect to enter the next exploration phase which runs until November 2013; the Sangaw North-1 well has fulfilled the work commitment for this next phase. During the coming months Sterling will integrate and analyse the seismic, drilling, logging and testing data before making recommendations to the joint venture group.

Angus MacAskill, Sterling's Chief Executive said, "We are disappointed that flow testing has not demonstrated commercial hydrocarbon flow rates in the Sangaw North-1 well. An integrated interpretation of all the data acquired during well operations will be conducted to determine the remaining potential of the Sangaw North structure prior to a decision on future operations."

Oil & Gas Post

Promote Your Page Too
LINK

Premier to Plug, Abandon Well at Vietnam Block

Premier to Plug, Abandon Well at Vietnam Block

Thursday, April 28, 2011
Pan Pacific Petroleum NL

Premier Oil Vietnam South B.V. ("Premier"), the operator of the Block 07/03 Production Sharing Contract, has advised that the CRD-2X-ST appraisal well operations have been successfully completed and that the CRD-2X well will now be plugged and abandoned as planned.

The CRD-2X appraisal well was spudded by the semi-submersible drilling rig the Ocean General on Thursday, February 10. The well was planned to evaluate the oil and gas discovered in multiple stacked Miocene and Oligocene reservoir sands by CRD-1X in 2009 with the aim of reducing uncertainty in whether the CRD (Cá Rong Ðo) structure contains sufficient volumes to support a potential development. CRD-1X tested two zones in the Miocene sands which flowed oil at a combined rate of 3,265.4 BOPD plus 8.1 MMSCFD, through a 48/64" choke, with no water. However, it was not possible to flow test the Oligocene sands at that time.

CRD-2X reached a total depth of 3,785 m BRT on March 10, and following evaluation of the section by logging, drill stem tests of two
reservoir zones in the Oligocene section were conducted. The first zone tested flowed gas and condensate at rates of 9.7 MMSCFD and 870 BOPD respectively through a 40/64" choke. The second zone tested flowed gas and condensate at rates of 17 MMSCFD and 1730 BOPD respectively through a 56/64" choke. The total net condensate/gas pay in this well was 72m, a significant increase compared with the 17 m of net pay penetrated in the Oligocene section in the up dip CRD-1X well.

CRD-2X was subsequently sidetracked to further evaluate the distribution of hydrocarbons in the Miocene sands. This sidetrack well CRD-2X-ST reached its planned total depth of 3,340 m BRT in the Miocene section and intersected 18.3m of net oil pay in the Miocene sands. This compares with 34.4m of net oil pay intersected in the Miocene section in the up dip CRD-1X well, and 3.8m in the down dip CRD-2X well.

These well results, including strong flows from the Oligocene sands have provided important information that will assist in the assessment of the resource potential of the CRD structure. The Operator will now undertake further studies to determine the feasibility of a commercial development.

Partners in the Vietnam Block 07/03 are:

• Pan Pacific Petroleum (Vietnam) Pty Ltd 5% (a wholly owned subsidiary of Pan Pacific Petroleum NL)
• Premier Oil Vietnam South B.V. (Operator) 30%
• Vietnam American Exploration Company, LLC. 40% (a wholly owned subsidiary of Pitkin Petroleum Plc)
• PearlOil (Ophiolite) Ltd. 15%
• PetroVietnam Exploration and Production Corporation Ltd 10%

AED to Plug, Abandon Lempuyang Well

AED to Plug, Abandon Lempuyang Well

Thursday, April 07, 2011

AED Oil Ltd.

AED advised that the Lempuyang-1 well testing operations are now complete. Continued mechanical issues resulted in the testing program being curtailed, due to safety concerns associated with unintended gas flowing into the well from perforations and/or damaged casing. This is believed to be due to failure of the packer in the well and/or damage to the well casing above the packer. As a result, the Lempuyang-1 well will now be plugged and abandoned.

The Lempuyang-1 well intersected excellent quality reservoir sands, with gas being flowed to surface from two test intervals. Some thin gas sands were interpreted at the lower reservoir test interval (3077-3131.5 mMD – of which 24 meters were perforated). The upper
reservoir test interval (2849-2867.5 mMD – of which all 18 meters were perforated) flowed gas to surface before AED was forced to cease testing due to a down hole mechanical failure and as a result no gas flow rates could be established. The gas analysis from the
upper reservoir test shows higher levels of C1-C8s and lower CO2 compared to the lower reservoir gas sample (<0.5 mole% compared to approx. 5 mole%).

While the testing results are inconclusive, AED notes that the data obtained supports the Joint Venture's optimism in relation to the Lempuyang prospect and surrounding acreage. AED has obtained valuable information regarding the onshore geology of Brunei, within an overpressured environment. As such, the Lempuyang-1 drilling and testing results will be integrated and used for future exploration assessment of the updip area within the eastern part of Block L, where 3D seismic is currently being considered. Further appraisal and
exploration well locations will be identified for drilling in late 2011.

Further to the Company's release of April 1, 2011, the Joint Venture currently anticipates that the following exploration activity will occur at Block L in the near term:

• Seismic acquisition at West Jerudong. The Joint Venture plans to begin shooting 130km2 3D seismic over the Jerudong oil field in Q3 2011. This field was previously produced and was shut-in while still on production without being fully depleted. While the field was originally drilled on surface oil seeps and limited 2D seismic coverage; the Joint Venture intends to acquire 3D seismic to accurately map the known fault blocks and to identify additional potential oil prospects (having regard to current oil prices).
• A 3D seismic patch (13km2) and 2D seismic line (13km) east of the Lempuyang-1 well will be acquired to confirm potential structural rollover. Depending on results, an extension to the 3D seismic program of up to 150km2 could be undertaken.

The Block L Joint Venture comprises AED South East Asia Limited (50% operating interest), Kulczyk Oil Ventures (40%) and QAF Brunei (10%).