The first well drilled using the new build jackup giant Maersk Interceptor have reaped successful results for operator Det norske, the firm said this morning.

The new unit, operating in the Norwegian sector of the North Sea, drilled two appraisal wells on the Ivar Aasen field in 113m water depth.

Det norske says the wells have increases the understanding of the Ivar Aasen reservoir and provides valuable information for location of production and injection wells on the field.

The primary target of the wells 16/1-21 S and 16/1-21 A, was to investigate reservoir rocks and the reservoir quality, in addition, the extension of an overlying gas cap in the eastern part of the field.

Well 16/1-21 S encountered a total oil column of 54m, of which 25m of good to very good reservoir quality in the Skagerrak formation. Gas was not encountered in the well. In the Heimdal formation, the well encountered 27m of water filled sandstone of good to very good quality.

16/1-21 A encountered a total oil column of 41m and a gas column of 4m, of which a total of 29m of very good reservoir quality in the Sleipner and Skagerrak Formation. The oil/water contact was not encountered.

“We are very pleased with the operation, and the result. This was Maersk Interceptor’s first well, and the operation was carried out according to plan. The operation has given us a greater understanding of the field, and the results will be used in the efforts to determine the final location of the production- and injection wells,” says Tor-Ole Jøssund, Subsurface Manager Ivar Aasen.

The Maersk Interceptor is the world’s largest jackup rig. It arrived Norway in October 2014, and the pilot wells were the rig’s first operation. Det norske has a contract with the rig for five years, with an option for an additional two years.

The Ivar Aasen field is due to be developed with a total of 15 wells, eight being production wells and seven being water injection wells. The rig is now due to continue drilling at Ivar Aasen field, with appraisal well 16/1-22 S in the western part of the field.

The field was discovered in 2008 and was previously estimated to contain 24 MMscm of recoverable oil, 1 MMscm of recoverable condensate and 4.5 billion scm recoverable gas.

The Ivar Aasem field consists of production licenses 001 B, 028 B, 242, 338 BS and 457. The Plan for Development and Operation (PDO) was submitted to the Ministry of Petroleum and Energy on 21 December 2012.

The latest two wells are the fourth and fifth appraisal wells on production license 001 B. The wells have been permanently plugged and abandoned.

Source: www.oedigital.com

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