辽河坳陷大洼构造带油气来源与充注模式研究

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英文篇名：Hydrocarbon Source and Charging Pattern in the Dawa Structural Zone of Liaohe Depression 作者：曹宇森 英文作者：Cao Yusen;PetroChina Liaohe Oilfield Company; 关键词：油源对比 ; 输导体系 ; 充注模式 ; 大洼构造带 ; 辽河坳陷 英文关键词：oil-source comparison;;migration system;;charging pattern;;Dawa structural zone;;Liaohe Depression 中文刊名：特种油气藏 英文刊名：Special Oil & Gas Reservoirs 机构：中国石油辽河油田分公司; 出版日期：2019-01-28 13:58 出版单位：特种油气藏 年：2019 期：03 基金：国家科技重大专项“渤海湾盆地精细勘探关键技术”(2016ZX05006-005) 语种：中文; 页：47-52 页数：6 CN：21-1357/TE ISSN：1006-6535 分类号：P618.13

摘要

针对大洼构造带油气来源认识不清、油气输导体系和充注模式研究不清的问题,运用地球化学分析手段,结合区域地质条件分析,明确了大洼构造带油气来源和输导体系,建立了大洼构造带油气充注模式。研究结果表明:大洼构造带油气来源于清水洼陷沙一段和沙三段烃源岩;油气主要输导途径为断层,以垂向运移为主、侧向运移为辅。大洼构造带西部具有断层-裂缝、断层-不整合面和断层-砂体三重输导体系,东部具有断层-裂缝、断层-不整合面双重输导体系;大洼构造带西部具有双源三重输导体系近源充注模式,东部具有单源双重输导体系远源充注模式;不同的充注模式控制了大洼构造带油气分布特征,具有近油源断层处油气富集成藏的规律,大洼构造带东部中生界和太古界近油源断层处仍具有较大的勘探潜力。该研究对确定下步勘探方向具有一定的借鉴意义。
        In view of the unclear hydrocarbon source,hydrocarbon migration system and charging pattern in Dawa structural zone,geochemical analysis was used to identify the hydrocarbon source and migration system and establish the corresponding charging pattern by combining with regional geology. Result indicates that the hydrocarbon in Dawa structural zone migrated from the Shahejie-1 and Shahejie-3 members in Qingshui Depression. Fault is considered as the major migration system which is dominated by longitudinal migration and assisted by lateral migration.The migration system in the west of Dawa structural zone is characterized by a triple migration system with fault-fracture,fault-unconformity and fault-sandbody. The migration system in the east of Dawa structural is considered as a dual migration system with fault-fracture and fault-unconformity. It is concluded as a near-source charging pattern with dual-source and triple migration system in the west and a distal-source charging pattern with singlesource and dual migration system. The hydrocarbon distribution is greatly dependent on the hydrocarbon charging patterns and is characterized by a favorable near-source accumulation around the fault. The Mesozoic and Archean near-source faults in the eastern Dawa structural zone still show relatively great exploration potential. The analysis of hydrocarbon source and charging pattern could provide certain guidance for the further hydrocarbon exploration in this area.

引文

[1]单俊峰,高险峰,李玉金,等.辽河油区油气资源潜力及重点区带选择[J].特种油气藏,2007,14(2):18-21.
    [2]李晓光,张金川,陈振岩,等.辽河坳陷西部凹陷油气成藏体系及天然气分布[J].天然气工业,2007,27(5):39-43.
    [3]李明刚,漆家福,童亨茂,等.辽河西部凹陷新生代断裂构造特征与油气成藏[J].石油勘探与开发,2010,37(3):281-288.
    [4]漆家福,李晓光,于福生,等.辽河西部凹陷新生代构造变形及“郯庐断裂带”的表现[J].中国科学:D辑地球科学,2013,43(8):1324-1337.
    [5]慕德梁,孟卫工,李成,等.断陷盆地陡坡带构造样式与油气聚集---以渤海湾盆地辽河坳陷西部凹陷陡坡带为例[J].石油与天然气地质,2009,30(5):635-642.
    [6]童亨茂,宓荣三,于天才,等.渤海湾盆地辽河西部凹陷的走滑构造作用[J].地质学报,2008,82(8):1017-1026.
    [7]刘敬,刘宝鸿,钱宝娟,等.西部凹陷基底结构及油气成藏特征[J].特种油气藏,2009,16(1):45-48.
    [8]冷济高,庞雄奇,李晓光,等.辽河断陷西部凹陷油气成藏主控因素[J].古地理学报,2008,10(5):473-480.
    [9]李宪梅,贾玉平,徐杰.辽河盆地中央凸起南部断裂特征与油气聚集关系[J].断块油气田,1998,5(3):11-15.
    [10]梁明亮,王作栋,郑建京,等.辽河断陷烃源岩有机地球化学特征[J].岩性油气藏,2014,26(4):110-116.
    [11]母国妍,钟宁宁,刘宝,等.湖相泥质烃源岩的定量评价方法及其应用[J].石油学报,2010,31(2):218-224.
    [12]刘立峰,姜振学,钟宁宁,等.辽河西部凹陷古近系烃源岩生烃动力学特征[J].地球科学---中国地质大学学报,2009,34(5):799-805.
    [13]单俊峰,王佳林,韩霞.辽河坳陷雷家致密油烃源岩评价标准探讨[J].特种油气藏,2017,24(1):22-26.
    [14]赵立鹏,王冉,钟方军,等.赣东北重点泥页岩层系地球化学特征分析[J].特种油气藏,2017,24(1):64-69.
    [15]母国妍,钟宁宁,刘宝.辽河断陷西部凹陷原油地球化学特征及其成因类型[J].石油实验地质,2008,30(6):611-616.