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《Oil & Gas Geology》 2007-02
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The role of Che-Mo palaeohigh in controlling hydrocarbon accumulation in central Juggar basin

Jia Qingsu1,2,Yi Wei2,Chen Fajing1,Xiong Zuowei3(1.China University of Geosciences,Beijing 100083;2.Sinopec Exploration and Producation Research Institute;Beijing 100083;3.Development Department of PetroChina Changqing Oil Company,Xi'an,Shanxi 710021)  
Che-Mo palaeohigh is a marginal uplift formed when Juggar basin was still a small intracontinental foreland depression in evolution during the Middle-Late Jurassic.Its formation and evolution can be divided into three main stages: growth(J2x-J3),burial(K-E),and disappearance(Nt-Q).The spatio-temporal configuration of the uplifts and hydrocarbon kitchens formed in different structural stages controlled the formation and distribution of hydrocarbon accumulations.And among the uplifts,Che-Mo palaeohigh played an important role in dominating the Mesozoic hydrocarbon accumulations in central Juggar basin in that the reservoirs came into being during the late J2x-J3,entered critical reservoiring period during the late K and the late E,and started adjustment during the late Nt-Q.It is concluded that the most prospective exploration target in Che-Mo palaeohigh shall be the Yongjin area in the south side of the uplift,while Sawodi and Zhuangdongbei in north part are regarded as the second best targets.
【Fund】: 国家“十五”攻关项目“准噶尔盆地中部油气成藏条件与选区评价”(2003BA613A-0-0)
【CateGory Index】: P618.13
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