CNOOC Ltd.'s Jinzhou (JZ) 31-6-1 wildcat drilled in Bohai Bay has successfully completed, indicating the company has made a breakthrough in the exploration in lithologic traps as planned and implemented this year. JZ 31-6-1 was drilled on Structure JZ 31-6 in the East Block of Liaodong Bay. It is located 1.2 miles (2 km) southwest of JZ 31-1 gas field and 10 miles (16 km) northwest of JZ 25-1S field, with an average water depth of 92 ft (28 m). The well, which was drilled to a total depth of 7,563 ft (2,305 m), encounted gas pay zones of 54 ft (16.5 m).
The well was tested flowing about 11.7 MMcf/d of gas on an 11.91 mm choke during the drill stem test. Zhu Weilin, vice president of the company and general manager of the Exploration Department commented, "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." The company is appraising the Structure JZ 31-6, to determine its reserve scale and commercial value.
Source: CNOOC Ltd.
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