中国石油大学学报（自然科学版）2025，Vol.49Issue(2)：93-107,15.DOI:10.3969/j.issn.1673-5005.2025.02.008
辽河东部凹陷中南段走滑转换带发育特征及其对油气运聚的控制作用
Characteristics of the strike-slip transfer zone in the central-southern part of the eastern Liaohe Depression and its control on hydrocarbons migration and accumulation
摘要
Abstract
In the central-southern part of the eastern Liaohe Depression,hydrocarbons exhibit an uneven planar distribution and rich vertical multi-formation accumulation characteristics.The strike-slip transfer zones play a crucial role in controlling hydrocarbon migration and accumulation.Based on an integrated analysis of geological,logging,and seismic data,this study identifies and classifies the strike-slip transfer zones in the region and summarizes their control mechanisms on hydrocarbon migration and accumulation.The results indicate that four types of strike-slip transfer zones are sequentially distributed from north to south:the dual-branch superimposed pressurized transfer zone,the single-branch S-type pressurized transfer zone,the dual-branch superimposed depressurized transfer zone,and the single-branch broom-shaped depressurized transfer zone.In depressurized transfer zones,oblique slip rates along source fractures are high,and interconnected sandstone bodies are well developed,facilitating both vertical and lateral hydrocarbon migration.In contrast,in pressurized transfer zones,fracture ac-tivity is weaker,and sealing capacity is stronger,which is favorable for hydrocarbon preservation.These strike-slip transfer zones govern hydrocarbon migration and accumulation patterns.The single-branch S-type pressurized transfer zone and the single-branch broom-shaped depressurized transfer zone are characterized by intense fault activity,primarily controlling hy-drocarbon accumulation in shallow formations.In contrast,the dual-branch superimposed depressurized transfer zone and the dual-branch superimposed pressurized transfer zone exhibit strong fault sealing,primarily governing hydrocarbon accumula-tion in deep or multi-formation reservoirs.关键词
走滑断裂/走滑转换带/运移条件/辽河东部凹陷Key words
strike-slip fault/strike-slip transfer zone/migration conditions/eastern Liaohe Depression分类
石油、天然气工程引用本文复制引用
沈澈,蒋有录,韩宏伟,孙新宇..辽河东部凹陷中南段走滑转换带发育特征及其对油气运聚的控制作用[J].中国石油大学学报（自然科学版）,2025,49(2):93-107,15.基金项目
中国石油天然气股份有限公司辽河油田分公司科研项目(2023100215FS0986) （2023100215FS0986）
国家自然科学基金面上项目(41972140) （41972140）
