龙凤山地区火石岭组火山岩输导体系特征与油气分布的关系  

Relationship between characteristics of volcanic migration system and distribution of hydrocarbon in Huoshiling Formation, Longfengshan area

作　　者：侯帅 蒋有录[1] 苏圣民 金帅 陈杏霞 HOU Shuai;JIANG Youlu;SU Shengmin;JIN Shuai;CHEN Xingxia(School of Geosciences in China University of Petroleum(East China),Qingdao 266580,China;Northeast Oil-Gas Branch Company,SINOPEC,Changchun 130062,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石油化工股份有限公司东北油气分公司,吉林长春130062

出　　处：《中国石油大学学报（自然科学版）》2023年第1期38-49,共12页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油化工股份有限公司科技部项目(34500000-19-ZC0607-0007)。

摘　　要：受构造、风化淋滤等作用影响,长岭断陷龙凤山地区火石岭组发育断层-不整合-有效输导层复合输导体系,影响油气运聚与分布。火石岭组内发育有上下两套含油气层,平面上自北部洼陷带至西部构造带,均有油气发现。通过分析不同类型输导体系分布特征及演化规律,探讨输导体系与油气分布的关系。结果表明:研究区油气平面上分布广泛性以及纵向分布差异性与输导体系组合类型及演化过程密切相关;早期活动断裂以及有效输导层是原油运移至西部构造带形成下部含油气层的重要通道,晚期断裂、不整合结构以及有效输导层则是天然气运移至东部斜坡带形成上部气层的重要输导体系;输导体系组合及演化造成现今油气平面分布差异显著,表现为“早期远源含油,晚期近源富气”的特征。Influenced by the tectonics and weathering leaching, the complex pathway networks developed in Huoshiling Formation in Longfengshan area, contists of fault, unconformity and effective transport bed, which affects the migration, accumulation and distribution of oil and gas. In Huoshiling Formation, two sets of upper and lower oil-bearing reservoirs are developed, and oil and gas are found in the plane from the northern depression belt to the western tectonic belt. By analyzing the distribution characteristics and evolution rules of different transport systems, the relationship between the transport system and oil and gas distribution is discussed. The results show that the horizontal and vertical distribution of oil and gas in the study area are closely related to the combination type and evolution process of the transport system. The early active faults and effective transport layers are important channels for oil to migrate to the western tectonic belt and form the lower oil-bearing strata, while the late faults, unconformity structures and effective transport layers are important transport systems for gas to migrate to the eastern slope belt and form the upper gas-bearing strata. The combination and evolution of the transport systems result in significant differences in the plane distribution of oil and gas, which is characterized by "early far source oil bearing, late near source rich gas".

关 键 词：火山岩 油气分布 断裂 不整合 有效输导层 输导体系 

分 类 号：TE122.1[石油与天然气工程—油气勘探]