海洋地质前沿2024，Vol.40Issue(6)：75-83,9.DOI:10.16028/j.1009-2722.2024.031
XH凹陷中南部背斜带油气分布特征与成藏主控因素
Characteristics of hydrocarbon distribution and analysis of the main controlling factors for reservoir formation in the central and southern anticline zone of XH Depression
摘要
Abstract
In order to clarify the main controlling factors for reservoir formation in the central and southern anti-cline zone of XH Depression,three typical oil and gas fields in the central and southern part,including T Gas Field,H Gas Field,and R Gas Field,were dissected.The results showed that the source and accumulation stage of hydrocarbons in the central and southern anticline belt were consistent,but there were significant differences in hydrocarbon distribution,mainly manifesting in three aspects:enrichment degree,vertical distribution horizon and plane occurrence location.The analysis believed that the main controlling factors causing the differences in hydro-carbon distribution were fault system,hydrocarbon source rock distribution,source-reservoir structural overlap re-lationship,and fault-sand coupling relationship.The difference of fault system determined the vertical distribution horizon of hydrocarbons and the differential enrichment degree inside the structure;the difference of maturity and thickness distribution of coal measure source rocks in Pinghu Formation determined the regional hydrocarbon en-richment degree;under the background of hydrocarbon accumulation outside the source rocks in Huagang Forma-tion,the overlap relationship between the top surface structure of Pinghu Formation source rocks and the reser-voir structure of Huagang Formation determined the local structural hydrocarbon accumulation intensity;and un-der the background of strong waterway in Huagang Formation in the central and southern part,the coupling rela-tionship between faults and sand bodies determined the hydrocarbon accumulation scale of single layer.关键词
油气分布特征/成藏主控因素/中南部背斜带/XH凹陷Key words
characteristics of hydrocarbon distribution/main controlling factors of hydrocarbon accumulation/central southern anticline zone/XH Depression分类
海洋科学引用本文复制引用
李宣玥..XH凹陷中南部背斜带油气分布特征与成藏主控因素[J].海洋地质前沿,2024,40(6):75-83,9.基金项目
"十四五"国家重大科技项目"弧后盆地深层/超深层油气成藏条件与成藏机制研究-XH凹陷"(KJGG2022-0402) （KJGG2022-0402）
中海石油(中国)有限公司重大科技专项"东海西湖凹陷大中型气田勘探方向及关键技术研究"(KJZX-2023-0101) （中国）
