Gas pool forming process in Wushi Sag of Kuqa Depression, Tarim Basin

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Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China ^{[1
]}

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Shiyou Kantan Yu Kaifa | 2006年 / 2卷 / 184-188期

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摘要：

Yilake gas field is composed of 3 super-pressure, normal temperature, sandstone pore type reservoir, bedded style, edge water and rich-superrich gas condensate pools in the Lower Cretaceous Shushanhe Formation. It is the first giant gas field discovered in the Wushi Sag. The pool forming model of the Yilake gas field is characterized by feeding from far-forth of lateral hydrocarbon kitchen, charging from migration network formed by fault, fracture, unconformity interface and conveyance layer, and accumulating by vadose inside super-pressure fluid compartment. The east part of the Wushi Sag could develop giant oil and gas fields, it has excellent conditions of hydrocarbon source and seal, and a big area of abnormal pressure compartment is formed by the three layers pressure structure. The feature of the pool forming from far-forth distance to the hydrocarbon kitchen has proved that the east part of the Wushi Sag belongs to a part of the Kuqa super-charge petroleum system. This prospect area has great petroleum resource potential, and might gain more rich-superrich gas condensate pools and oil pools.

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