Australia’s AWE, Santos plan for sidetrack operations for Ande Ande Lumut appraisal well

JAKARTA (RAMBUENERGY.com) –  Australia’s oil and gas company AWE Limited (ASX: AWE) has been advised by the Operator of the Ande Ande Lumut, AAL-4X appraisal well, Santos Limited, that due to a mechanical obstruction in the well bore the proposed Drill Stem Tests (DST) in the K-sand and G-sand reservoirs cannot be completed in the current hole.

The Northwest Natuna PSC is located offshore Indonesia in the Natuna Sea and includes the Ande Ande Lumut (AAL) oil project. The AAL project comprises the K Sand reservoir (101 million barrels gross recoverable oil, net 24.3 million barrels of 2P Reserves to AWE) and the underlying G Sand
reservoir.

The AAL joint venture is now planning to commence sidetrack operations to allow completion of the project scope and complete the planned DSTs, it said.

Prior to the obstruction, the well had successfully achieved all other objectives of the AAL-4X well, having intersected oil-bearing sands in both the primary G Sand and secondary K-sand objectives.

The evaluation program has successfully acquired all planned wireline logs, pressure data and oil samples from both reservoirs and also recovered approximately 63m of full core across the two reservoirs. The data acquired to date has provided significant new information to further the  development planning of the K-sand reservoir and to assist with the development potential of the Gsand reservoir.

The AAL-4X well was drilled to a maximum total depth of 1,246m TVDSS and was forecast to take approximately 48 days to complete. The well is being drilled in water depth of approximately 72m using the Raniworo jack-up drilling rig. The AAL-4X well is still expected to be completed within the Operator’s budget, as the well has been drilled in a shorter timeframe than planned.

The AAL-4X appraisal well is targeting the G Sand reservoir, which is estimated to contain 289 million barrels gross oil in place with 36 million barrels gross recoverable oil (net 10 million barrels 2C Resources to AWE). Appraisal of the G Sand will facilitate the preparation of Plan of Development for this resource, which could be developed in conjunction with the already approved K Sand development. (*)

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