| 江汉盆地沙市组蒸发岩沉积充填与成藏特征 |
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| 引用本文： | 赵海涛,陈波,刘艳.江汉盆地沙市组蒸发岩沉积充填与成藏特征[J].西南石油学院学报,2010,32(2). |
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| 作者姓名： | 赵海涛 陈波 刘艳 |
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| 作者单位： | 赵海涛(中国石油大学(北京)地质地球物理综合研究中心,北京,昌平,102249;中国石油大学(北京)油气资源与探测国家重点实验室,北京,昌平,102249;中国石油大学(北京)资源与信息学院,北京,昌平,102249);陈波(长江大学油气资源与勘探技术教育部重点实验室,湖北,荆州,434023);刘艳(中国石油大学(北京)资源与信息学院,北京,昌平,102249) |
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| 基金项目： | 中国石化股份公司原中南分公司科研项目 |
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| 摘 要： | 由于构造和气候因素的差异,江汉盆地沙市组的上段和下段具有不同的沉积充填特征.沙市沉积早期为弱断陷构造背景,湖盆彼此分隔闭塞,受中、亚热带干旱气候影响,在断陷区形成盐湖相蒸发岩充填,表现为浓缩型沉积序列特征;沙市晚期为拗陷型构造背景,盆地持续下降,湖盆范围扩大,湖水逐渐淡化,形成三角洲-咸水湖相充填,表现为淡化型沉积序列特征.盆地的沉积充填特征控制了蒸发岩地层生、储、盖等成藏要素的差异,表现为不同的油气成藏模式.浓缩型沉积序列的蒸发岩及盐间泥岩提供了烃源岩条件,盐间的膏岩、泥岩提供储层条件,蒸发岩提供盖层条件,为盐间非砂岩油气成藏模式;淡化型沉积序列的湖相泥岩及前三角洲泥岩提供烃源岩条件,三角洲前缘各微相砂体提供储层条件,蒸发岩提供盖层条件,为盐下砂岩油气成藏模式.
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| 关 键 词： | 江汉盆地 成藏模式 蒸发岩 沉积序列 砂岩油藏 非砂岩油藏 |
SEDIMENTARY FILLING CHARACTERS AND RESERVOIR PATTERN OF THE SHASHI FORMATION IN JIANGHAN EVAPORATE BASIN |
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| ZHAO Hai-taoa,b,c,CHEN Bo,LIU Yanc.SEDIMENTARY FILLING CHARACTERS AND RESERVOIR PATTERN OF THE SHASHI FORMATION IN JIANGHAN EVAPORATE BASIN[J].Journal of Southwest Petroleum Institute,2010,32(2). |
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| Authors: | ZHAO Hai-taoa b c CHEN Bo LIU Yanc |
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| Affiliation: | ZHAO Hai-tao1a,1b,1c,CHEN Bo2,LIU Yan1c(1.China University of Petroleum:a.Lab for Integration of Geology , Geophysics,b.State Key Lab of Petroleum Resource , Prospecting,c.College of Natural Resource & Information Technology,Changping Beijing 102249,China,2.MOE Key Laboratory of Exploration Technologies for Oil , Gas Resources,Yangtze University,Jingzhou Hubei 434023,China) |
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| Abstract: | Different sedimentary filling characters generated by the differences in tectonic evolution and climatic condition between upper and lower member in Shashi Formation,Jianghan Basin.Under weak fault depression tectonic condition and arid subtropical climate during depositional period of the lower member,evaporites were deposited in separated salt-lake and presented a concentrated sedimentary sequence.However,under depression tectonic condition during the depositional period of the upper member,sedimentation ... |
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| Keywords: | Jianghan Basin hydrocarbon accumulation mode evaporite rock sedimentary sequence sandstone reservoir non sandstone reservoir |
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