沙西凸起东北部斜坡带成藏条件与成藏模式
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摘要
塔北隆起沙西凸起勘探程度很低,英买油气田的发现是沙西凸起油气勘探的新突破。通过对沙西凸起东北部周缘5口井原油样品进行油-油对比分析,认为沙西凸起东北部斜坡带油气来自北侧库车坳陷烃源岩。综合三维地震、岩心观察、铸体薄片分析、测井曲线特征、EPT高频吸收衰减油气检测等研究,指出沙西突起东北部斜坡带寒武系、震旦系潜山圈闭位于油气运移的通道,即前中生界不整合面(T50)上,古潜山型油气藏成藏条件优越,并具有"一储两封"的成藏模式。
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".
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".
引文
[1]何登发,贾承造,李德生,等.塔里木多旋回叠合盆地的形成与演化[J].石油天然气地质,2005,26(1):64~75.
[2]金之钧,王清晨.中国典型叠合盆地与油气成藏研究新进展——以塔里木盆地为例[J].中国科学D辑,地球科学,2004,34(增刊1):1~12.
[3]徐国强,刘淑根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油天然气地质,2005,26(1):114~119.
[4]贾庆素,周庆凡.塔北地区含油气系统[J].石油与天然气地质,2002,23(1):103~106.
[5]田景春,陈洪德,侯明才,等.右江盆地晚古生代白云岩与层序地层的关系及其储集性[J].成都理工大学学报(自然科学版),2004,31(1):34~39.
[6]陈文彬,杨平,张予杰,等.南羌塘盆地扎仁古油藏白云岩储层特征及成因研究[J].沉积与特提斯地,2006,26(2):42~46.
[7]Keyser TK,James NP,Bone Y.Shallowburial dolomitizationand dedolomitization of Genozoic cool-water limsetones,southern Australia:Geochemistry and origin[J].SedimentaryResearch,2002,72(1):146~157.
[8]赵新民,李国平,石强.泥岩盖层纵向封闭性及砂岩储层侧向封堵性测井分析[J].油气井测试,2003,12(1):17~19.
[9]宋岩,洪峰,夏新宇,等.异常压力与油气藏的同生关系[J].石油勘探与开发,2006.33(3):303~307.
[10]俞仁连,闫相宾,金晓辉,等.塔里木盆地研究进展与勘探方向[J].石油天然气地质,2005,26(5):598~604.
[11]蔡希源.塔里木盆地台盆区油气成藏条件与勘探方向[J].石油天然气地质,2005,26(5):590~597.
[12]张抗.塔里木盆地塔北隆起油气勘探领域[J].新疆石油地质,2003,24(3):188~192.
[13]魏国齐,贾承造,施央申,等.塔北隆起北部中新生界张扭性断裂系统特征[J].石油学报,2001,21(1):19~24
[14]陈荣林,马红强,贾存善.塔里木盆地沙雅隆起油气囤闭特征及成藏规律[J].石油实验地质,2002,24(1):31~35.
[2]金之钧,王清晨.中国典型叠合盆地与油气成藏研究新进展——以塔里木盆地为例[J].中国科学D辑,地球科学,2004,34(增刊1):1~12.
[3]徐国强,刘淑根,李国蓉,等.塔中、塔北古隆起形成演化及油气地质条件对比[J].石油天然气地质,2005,26(1):114~119.
[4]贾庆素,周庆凡.塔北地区含油气系统[J].石油与天然气地质,2002,23(1):103~106.
[5]田景春,陈洪德,侯明才,等.右江盆地晚古生代白云岩与层序地层的关系及其储集性[J].成都理工大学学报(自然科学版),2004,31(1):34~39.
[6]陈文彬,杨平,张予杰,等.南羌塘盆地扎仁古油藏白云岩储层特征及成因研究[J].沉积与特提斯地,2006,26(2):42~46.
[7]Keyser TK,James NP,Bone Y.Shallowburial dolomitizationand dedolomitization of Genozoic cool-water limsetones,southern Australia:Geochemistry and origin[J].SedimentaryResearch,2002,72(1):146~157.
[8]赵新民,李国平,石强.泥岩盖层纵向封闭性及砂岩储层侧向封堵性测井分析[J].油气井测试,2003,12(1):17~19.
[9]宋岩,洪峰,夏新宇,等.异常压力与油气藏的同生关系[J].石油勘探与开发,2006.33(3):303~307.
[10]俞仁连,闫相宾,金晓辉,等.塔里木盆地研究进展与勘探方向[J].石油天然气地质,2005,26(5):598~604.
[11]蔡希源.塔里木盆地台盆区油气成藏条件与勘探方向[J].石油天然气地质,2005,26(5):590~597.
[12]张抗.塔里木盆地塔北隆起油气勘探领域[J].新疆石油地质,2003,24(3):188~192.
[13]魏国齐,贾承造,施央申,等.塔北隆起北部中新生界张扭性断裂系统特征[J].石油学报,2001,21(1):19~24
[14]陈荣林,马红强,贾存善.塔里木盆地沙雅隆起油气囤闭特征及成藏规律[J].石油实验地质,2002,24(1):31~35.
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