Source: Norwegian Petroleum Directorate
The Norwegian Petroleum Directorate has granted Shell a drilling permit for the Gro appraisal well. Wellbore 6604/10-1 will be drilled with the Aker Barents semisubmersible drilling rig.
The drilling program for wellbore 6604/10-1 relates to the drilling of an appraisal well in production license 326 in the northern Norwegian Sea. Shell is the operator with a 50 percent ownership interest. Other licensees are Statoil Petroleum AS ( 40 percent) and Gaz de France Suez E&P (10 percent).
The license includes blocks 6603/12-1, 6604/7, 6604/8 and 6604/10. Appraisal well 6604/10-1 is the second exploration well in production license 326. Drilled by the Leiv Eiriksson, the first well on the license, wildcat well 6603/12-1, discovered natural gas at the Gro prospect.
The Gro discovery well was drilled in 1,376 meters of water, which is the greatest water depth of any discovery made on the Norwegian shelf to date.
There is great uncertainty regarding the size of the Gro discovery. Preliminary estimates indicate between 10 and 100 billion standard cubic meters (Sm3) of recoverable gas. The appraisal drilling will help to define the size and extent of the field.