| LDW海域LZ凹陷古近系烃源岩排烃特征分析 |
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| 引用本文： | 鲜志尧,罗小平.LDW海域LZ凹陷古近系烃源岩排烃特征分析[J].物探化探计算技术,2012,34(1):39-45. |
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| 作者姓名： | 鲜志尧 罗小平 |
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| 作者单位： | 成都理工大学油气藏地质及开发工程国家重点实验室,四川成都,610059 |
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| 基金项目： | 国家自然科学基金资助（40772084） |
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| 摘 要： | 辽中凹陷古近系发育有四套烃源岩,各套烃源岩对于辽中凹陷油气成藏的贡献大小不同。在对烃源岩评价的基础上,利用排烃门限理论及生烃潜力法,对辽中凹陷古近系东二下段、东三段、沙一段和沙三段烃源岩的排烃特征进行研究,并对其排烃强度进行评价。经研究发现,各套烃源岩层的排烃门限深度分别为2 400m、2 900m、2 700m和2 500m左右,通过排烃强度的计算可知,沙三段烃源岩平均排烃强度最高。根据对各套烃源岩层厚,各项烃源岩评价参数,以及现今排烃强度等参数的综合分析认为,辽中凹陷沙三段烃源岩对于辽中凹陷油气成藏贡献最大,是辽中凹陷主力烃源岩。
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| 关 键 词： | 辽中凹陷 古近系 烃源岩 排烃特征 排烃强度 |
THE HYDROCARBON-EXPULSION CHARACTERS OF LZ DEPRESSION IN LDW SEA AREA |
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| XIAN Zhi-yao,LUO Xiao-ping.THE HYDROCARBON-EXPULSION CHARACTERS OF LZ DEPRESSION IN LDW SEA AREA[J].Computing Techniques For Geophysical and Geochemical Exploration,2012,34(1):39-45. |
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| Authors: | XIAN Zhi-yao LUO Xiao-ping |
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| Institution: | (State Key Lab of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China) |
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| Abstract: | In LiaoZhong depression,there were four sets of hydrocarbon source rocks;they were all developed in the paleogene.Each of them had different contribution to the oil and gas accumulation in this depression,based on the source rock evaluation we used the theory of hydrocarbon expulsion threshold and the hydrocarbon-generating potential method to research the hydrocarbon expulsion characteristics of upper Ed2,Ed3,Es1 and Es3 source rocks in the Paleogene,and evaluate the strength of their expulsion.The study found different sets of source rocks for hydrocarbon expulsion threshold were the depth of 2600m,2900m,2700m and 2500m or so,the calculation of the strength of hydrocarbon expulsion shows that Es3 has the highest average value.Based on the thickness of the various sets of source rocks,the parameters of hydrocarbon source rock evaluation and the parameters of the current strength of hydrocarbon expulsion comprehensive analysis,the source rock Es3 in LiaoZhong depression contributed the most for hydrocarbon accumulation in LiaoZhong depression,is main source rock of LiaoZhong depression. |
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| Keywords: | LiaoZhong depression paleogene source rock characteristics of hydrocarbon expulsion strength of hydrocarbon expulsion |
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