CNOOC Ltd. has completed wildcat well Jinzhou (JZ) 31-6-1 on structure JZ 31-6 in the east block of Liaodong Bay in Bohai Bay. With this well, CNOOC has achieved a company objective in exploration in lithologic traps.
Offshore staff
HONG KONG -- CNOOC Ltd. has completed wildcat well Jinzhou (JZ) 31-6-1 on structure JZ 31-6 in the east block of Liaodong Bay in Bohai Bay. With this well, CNOOC has achieved a company objective in exploration in lithologic traps.
JZ 31-6-1 is 2 km southwest of the JZ 31-1 gas field and 16 km northwest of the JZ 25-1S field in 28 m water depth. The well was drilled to TD of 2,305 m and encountered gas pay zones of 16.5 m.
The well test flowed 11.7 MMcf/d of gas via 11.91-mm choke during the drillstem test.
Zhu Weilin, vice president and general manager of the exploration department, said, "Drilling of JZ 31-6-1 is a meaningful endeavor to explore lithologic traps in Bohai Bay. This success brought us an exciting breakthrough in the new exploration area. We believe that it will be of strategic significance for the company's future reserve growth."
CNOOC now is carrying out an appraisal of the JZ 31-6 structure to determine its reserve scale and commercial value.
