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东濮凹陷文留地区煤成气运聚机理及成藏过程
(1.中国石油大学(华东)地球科学与技术学院, 山东 青岛 266580;2.中石化中原油田分公司勘探开发科学研究院, 河南 濮阳 457001)
DYNAMIC ACCUMULATION PROCESS OF COAL-FORMED GAS IN WENLIU AREA, DONGPU DEPRESSION
(1.School of Geosciences, China University of Petroleum(East China), Qingdao 266580, Shandong, China;2.Exploration & Development Research Institute, Zhongyuan Oilfield Company, Puyang 457001, Henan, China)
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投稿时间:2017-08-25    修订日期:2018-05-30
中文摘要: 文留地区是渤海湾盆地典型的煤成气区之一,随着勘探认识的不断深入,研究区煤成气运聚成藏过程的精细刻画仍需完善。运用流体包裹体技术分析文留地区煤成气成藏时间,基于断层活动特征明确研究区输导体系演化特征,根据断—盖组合关系及烃类流体包裹体丰度(GOI)测试结果分析气藏保存条件,最终明确文留地区煤成气成藏过程。研究表明,文东断层为研究区气源断层,其输导供烃条件可用断层输导效率系数(FTEC)进行量化表征,评价结果表明研究区具有优越的气源供给条件;文留地区煤成气来源于临近的洼陷带,煤成气在东营组沉积时期沿文东断层垂向运移至石炭—二叠系和沙四段储层聚集成藏,东营末构造抬升期气藏受构造运动影响而发生少量天然气散失。
Abstract:The Wenliu area is one of the typical coal-formed gas accumulation zones in the Bohai Bay Basin. With the deepening of exploration, the fine characterization of the coal-forming gas accumulation process in this area still needs to be improved. The fluid inclusion technology was used to analyze the coal-formed gas accumulation date in Wenliu area. Based on the analysis of fault activity, the evolution characteristics of the transport system in the study area were determined. The gas-fluid inclusion abundance (GOI) test were used to analyze the gas preservation conditions, and finally the process of coal-formed gas accumulation in Wenliu area was carried out. The results show that the Wendong fault is a gas source fault in the study area, and its hydrocarbon supply conditions can be characterized by the Fault Transport Efficiency Coefficient (FTEC). The study area has superior gas supply conditions; the coal-formed gas in Wenliu area originates from the adjacent deep sag zone, and vertically transports along the Wendong fault to the Carboniferous-Permian and the Es4 sandstone reservoirs in the trap during the sedimentary period of the Dongying Formation. Small amount of the coal-formed gas loss occurred during the tectonic uplifting movements in the late sedimentary period of the Dongying Formation.
文章编号:     中图分类号:TE122.2    文献标志码:
基金项目:国家油气重大专项课题(2016ZX05006-007)
引用文本:
胡洪瑾,蒋有录,刘景东,赵凯,幕小水.东濮凹陷文留地区煤成气运聚机理及成藏过程[J].地质力学学报,2019,25(2):215-222DOI:10.12090/j.issn.1006-6616.2019.25.02.020
HU Hongjin,JIANG Youlu,LIU Jingdong,ZHAO Kai,MU Xiaoshui.DYNAMIC ACCUMULATION PROCESS OF COAL-FORMED GAS IN WENLIU AREA, DONGPU DEPRESSION[J].,2019,25(2):215-222DOI:10.12090/j.issn.1006-6616.2019.25.02.020

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