松辽盆地他拉海地区萨、葡油层断砂输导油气能力主控因素与油气富集规律  

Main controlling factors of hydrocarbon transport capacity of faults and sandbodies and oil and gas enrichment laws of Saertu-Putaohua reservoirs in Talahai area of Songliao Basin

作　　者：胡佳[1] 魏靖依 吴昊 张红杰 周妍 刘峻桥 HU Jia;WEI Jingyi;WU Hao;ZHANG Hongjie;ZHOU Yan;LIU Junqiao(Geophysical Exploration Research Institute of PetroChina Jilin Oilfield,Songyuan 138000,China;School of Geosciences and Technology,Southwest Petroleum University,Chengdu 610500,China;School of Earth Sciences,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]中国石油吉林油田公司地球物理勘探研究院,吉林松原138000 [2]西南石油大学地球科学与技术学院,四川成都610500 [3]东北石油大学地球科学学院,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2024年第5期54-61,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目“源岩层内与源断裂相关的原始仓储形成机理及对油气富集的控制作用”(42272166);国家自然科学基金项目“富油断陷断裂输导体类型及优势输导通道厘定”(42202158);中国石油大庆油田有限责任公司校企合作项目“松辽盆地北部黑帝庙、萨尔图和葡萄花油层油气输导体系及对成藏的控制作用”(DQYT-1201002-2022-JS-469)。

摘　　要：为了研究松辽盆地北部他拉海地区萨、葡油层油气富集规律,在萨、葡油层油气成藏模式及输导油气通道构成研究的基础上,通过分析断裂和砂体输导油气能力主控因素及其分布特征,结合油气富集特征,对断砂输导油气能力影响因素与油气富集关系进行研究。结果表明:他拉海地区油源断裂输导油气能力的主控因素是成藏期古断距和下伏青一段源岩排烃强度,下伏青一段源岩排烃强度与葡萄花油层油气富集之间关系密切,是造成其油气主要分布在东部的主要原因;油源断裂古断距与萨尔图油层油气富集关系密切,是造成其油气主要分布在西部的主要原因;砂体输导油气能力主控影响因素是古构造脊和优势相砂体发育及分布,古构造脊发育及分布与萨、葡油层油气富集关系密切,其发育及分布是造成油气主要富集在其东部和中北部的主要原因。研究成果为以断砂输导体系为主的勘探地区油气成藏分析提供理论参考。In order to study oil and gas enrichment law in Saertu-Putaohua reservoirs of Talahai area in northern Songliao Basin,based on study of hydrocarbon accumulation pattern and hydrocarbon transport path composition in Saertu-Putaohua reservoirs,through analysis on main controlling factors of hydrocarbon transport capacity of faults and sandbodies and their distribution characteristics,influencing factors of hydrocarbon transport capacity of faults and sandbodies and relationship with oil and gas enrichment are studied combined with oil and gas enrichment char-acteristics.The results show that main controlling factors of hydrocarbon transport capacity of oil-source faults in Ta-lahai area are paleo-fault throw during accumulation period and hydrocarbon expulsion intensity of source rocks in underlying Qing1 Member.Hydrocarbon expulsion intensity of source rocks in underlying Qing1 Member is closely related to oil and gas enrichment in Putaohua reservoir,which is the main reason for its oil and gas distribution main-ly in the east.Paleo-fault throw of oil-source fault is closely related to oil and gas enrichment in Saertu reservoir,which is the main reason for its oil and gas distribution mainly in the west.Main controlling factor of hydrocarbon transport capacity of sandbodies is development and distribution of paleostructural ridges and dominant-facies sand-bodies.Development and distribution of paleostructural ridges are closely related to oil and gas enrichment in Saer-tu-Putaohua reservoirs,which are main reasons for oil and gas enrichment mainly in their eastern and north-central areas.The research provides theoretical reference for analysis of oil and gas accumulation in exploration areas domi-nated by faults and sandbodies transport system.

关 键 词：松辽盆地 萨、葡油层 断砂输导油气能力 主控因素 油气富集 

分 类 号：TE122[石油与天然气工程—油气勘探]