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《Special Oil & Gas Reservoirs》 2008-03
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Hydrocarbon accumulation conditions and patterns in the northeast slope belt of Shaxi uplift

HU Jin-xiang1,SHAN Xuan-long2,LI Zong-jie1,TIAN Wen-quan1(1. Northwest Oilfield Company, SINOPEC, Urumqi, Xinjiang 830011, China; 2. Jilin University, Changchun, Jilin 130061, China)  
Exploration degree is very low in Shaxi uplift of North Tarim swell. The discovery of Yingmai oil and gas field is a new breakthrough of exploration in Shaxi uplift. Oil-oil correlation of crude oil samples from 5 wells in northeast Shaxi uplift indicates that the hydrocarbon in the northeast slope belt of Shaxi uplift is derived from the source rock in north Kuche sag. Comprehensive study of 3D seism, core observation, cast thin-section analysis, well log features and EPT high-frequency absorption decay for hydrocarbon detection indicates that the Cambrian and Sinian buried hill traps in the northeast slope belt of Shaxi uplift lie on oil and gas migration path, i.e. pre-Miocene unconformity surface(T50), where has good conditions of forming buried hill traps, and shows the accumulation pattern of "one reservoir with two seals".
【Fund】: 中石化西北油田分公司“天山南新和地区前中生界油气成藏条件富集规律及勘探目标研究”部分成果(KJ2006-003)
【CateGory Index】: P618.13
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