| 塔里木盆地阿克库勒凸起油气输导体系类型与演化 |
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| 引用本文： | 李坤,赵锡奎,张小兵,叶斌.塔里木盆地阿克库勒凸起油气输导体系类型与演化[J].地质科学,2007,42(4):766-778. |
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| 作者姓名： | 李坤 赵锡奎 张小兵 叶斌 |
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| 作者单位： | 成都理工大学能源学院油气藏地质及开发工程国家重点实验室, 成都, 610059 |
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| 摘 要： | 阿克库勒凸起受多期构造叠加影响,具有长期生烃、多期供烃的烃源特征,油气输导体系复杂。在分析输导路径、输导能力及作用的基础上,将输导系统分成断裂型、不整合型、输导层型及复合型4类。利用地震和钻井资料恢复古构造格局,分析输导体系的演化及配置关系,认识油气运移的动态过程,指出区域性深大断裂是油气垂向运移的主要通道,而输导层和不整合面(中-下奥陶统顶面、奥陶系顶面和志留系顶面)的叠置是油气侧向运移的关键因素,并且油气成藏关键时刻输导体顶面的几何形态,尤其是古构造脊线的展布特征,决定了油气优势运移的方向和路径。由断层—不整合面—岩溶网络组成的"层—面—网"复式输导系统相互匹配,沿构造脊线呈立体网状阶梯式运移是研究区油气输导体系最鲜明的特点。
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| 关 键 词： | 输导体系 构造脊 油气运移 演化 阿克库勒凸起 |
| 文章编号： | 0563-5020（2007）04-0766-13 |
| 收稿时间： | 2007-01-04 |
| 修稿时间： | 2007-01-04 |
HYDROCARBON MIGRATION PATHWAY SYSTEM TYPES AND EVOLUTION IN THE AKEKULE RISE, TARIM BASIN |
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| Li Kun,Zhao Xikui,Zhang Xiaobing,Ye Bin.HYDROCARBON MIGRATION PATHWAY SYSTEM TYPES AND EVOLUTION IN THE AKEKULE RISE, TARIM BASIN[J].Chinese Journal of Geology,2007,42(4):766-778. |
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| Authors: | Li Kun Zhao Xikui Zhang Xiaobing Ye Bin |
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| Institution: | State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Chengdu 610059 |
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| Abstract: | The Akekule Rise is a sub-order tectonic unit in the northern Tarim Basin.Controlled by several tectonic movements during the long geohistory,the oil-gas accumulation there was characterized with long-term hydrocarbon-generation,multiple-epoch providing and complicated pathway systems.Based on an analysis of transportation pathway,capability and effect,the pathway systems could be divided into four types: the fault-type,the unconformity-type,the carrier bed-type and the combination-type.By reconstructing the paleo-tectonic framework on the base of seismic data and well information,analyzing evolution and their coordinate of the pathway systems,and recognizing the dynamic processes of oil-gas migration,our work pointed out that the regional deep faults were main paths for vertical transportation of oil and gas.Furthermore,our study found that the superposition of carrier bed and unconformities,such as the top surface of Lower-Middle Ordovician(T47),the top surface of Upper Ordovician(T07) and the top surface of Silurian(T06),was a key factor for horizontal migration of oil and gas.The geometrical shapes of the pathway system, especially the distribution of the paleo-structural ridge during the key epochs of oil-gas gathering in geohistory,might decide the predominant migrational direction and path of oil and gas.In the Akekula Rise,the most distinct character of oil-gas transportation was: a compound pathway system consisted of fault,unconformity plane and karst network,and the hydrocarbon migration along structural ridge in a form of three-dimensional netted ladder. |
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| Keywords: | Pathway system Structural ridge Oil-gas migration Evolution The Akekule Rise |
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