研究论文

塔里木盆地塔中地区志留系油气成藏模式

  • 段中钰;庞宏;蒲青山;马永琴
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  • 1. 中国石油大学(北京);油气资源与探测国家重点实验室,北京 102249;2. 中国石油天然气集团公司东方地球物理勘探有限责任公司国际勘探事业部,河北涿州 072751

收稿日期: 2011-03-15

  修回日期: 2011-07-30

  网络出版日期: 2011-08-18

Hydrocarbon Accumulation Model of Silurian Strata of Oil-gas Reservoir in Tazhong Area, Tarim Basin

  • DUAN Zhongyu;PANG Hong;PU Qingshan;MA Yongqin
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  • 1. State Key Laboratory of Petroleum Resource and Prospecting; China University of Petroleum, Beijing 102249, China;2. International Exploration Division, Bureau of Geophysical Prospecting, China National Petroleum Company, Zhuozhou 072751, Hebei Province, China

Received date: 2011-03-15

  Revised date: 2011-07-30

  Online published: 2011-08-18

摘要

塔里木盆地塔中地区志留系油气显示丰富,成藏条件复杂,研究其油气成藏模式对推动塔中油气勘探有重大现实意义.本文主要对志留系沥青砂和可动油气的分布特征及成因机制进行分析,总结其成藏模式.研究结果表明:塔中地区志留系可动油气主要来自寒武系和奥陶系的混源,可动油气主要存在晚海西期和喜山期两期成藏,运移以垂向运移为主,侧向有限运移;塔中地区志留系沥青砂岩主要来源于寒武—下奥陶统烃源岩,沥青砂岩为油气边运移边破坏的产物;塔中志留系油气为两期成藏、两期改造的多点垂向输导,有限侧向输导成藏演化模式.

本文引用格式

段中钰;庞宏;蒲青山;马永琴 . 塔里木盆地塔中地区志留系油气成藏模式[J]. 科技导报, 2011 , 29(23) : 39 -44 . DOI: 10.3981/j.issn.1000-7857.2011.23.004

Abstract

There are a lot of asphaltic sandstones that is widely distributed in Tazhong Area, Tarim Basin; however the condition of hydrocarbon accumulation is complex. It is of great practical significance to study the hydrocarbon accumulation model of Silurian strata in order to accelerate the process of oil and gas exploration in the Tazhong Area. The distribution and genesis mechanism of asphaltic sandstones and movable oil of Silurian have been analyzed, and the hydrocarbon accumulation model have further been summarized. The results show that (1) the movable oil of Silurian strata in Tazhong Area is from the mixed-source rocks of the Cambrian and Ordovician; there are two stages of hydrocarbon accumulation, that is, Hercynian and late Himalayan, Vertical and limited lateral migration are the mainly patterns; (2) The asphaltic sandstone is from the mixed-source rocks of Cambrian and Lower Ordovician; It formed out of the destruction causes by the process of previous hydrocarbon migration; (3) The hydrocarbon accumulation model of Silurian strata is two stages of hydrocarbon accumulation, two stages of hydrocarbon adjustment, multi-point vertical migration, and limited lateral migration.
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