Ivar Aasen Appraisal Wells Drilled Successfully
Norwegian junior oil firm Det norske oljeselskap reported Wednesday that it has completed the drilling of two appraisal wells on the Ivar Aasen field, offshore Norway. The operation was designed to increase the understanding of the reservoir and provide valuable information for the location of further wells, the firm said.
The primary target of the wells (designated 16/1-21S and 16/1-21A) was to investigate reservoir rocks and reservoir quality, as well as the extension of an overlying gas cap in the eastern part of the field.
Well 16/1-21S encountered a total oil column of 177 feet, of which 82 feet was 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 88.5 feet of water-filled sandstone of good-to-very good quality.
Well 16/1-21A discovered a total oil column of 134 feet and a gas column of 13 feet, of which a total of 95 feet was of very good reservoir quality in the Sleipner and Skagerrak formations. The oil/water contact here was not encountered.
The wells were drilled using the Maersk Interceptor (492' ILC) rig – the world's largest jack-up rig. Interceptor arrived in Norway in October 2014 and the two pilot wells were the rig's first operation.
Tor-Ole Jøssund, Det norske's Subsurface Manager for the Ivar Aasen field, commented in a company statement:
"We are very pleased with the operation, and the result. This was Maersk Interceptor's first well, and the operation were 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."
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