海相油气地质2025，Vol.30Issue(1)：71-81,11.DOI:10.3969/j.issn.1672-9854.2025.01.006
西湖凹陷西部斜坡带油气成藏主控因素与勘探新领域
Main controlling factors of oil and gas accumulation and new exploration fields in the western slope zone of Xihu Sag,East China Sea Basin
摘要
Abstract
The western slope zone of Xihu Sag is characterized by"small,faulted,poor and scattered".A comprehensive utilization of various data such as geological logging,well logging,seismic and production has been conducted to summarize the distribution patterns of oil and gas discovered in the western slope zone.It is believed that the western slope zone has the characteristics of oil and gas distribution of"north-south zoning,upper-lower stratification,near source enrichment".By dissecting typical oil and gas reservoirs and analyzing the geological reasons of the failed wells in the western slope zone,it is believed that traps and migration are the main controlling factors for oil and gas accumulation.Structural styles determine the type and effectiveness of the trap,and control the types of oil-gas reservoir and differential enrichment in different zones.The different migration of oil and gas,as well as the two-stage filling and evaporation fractionation,control the characteristics of near source accumulation and upper oil and lower gas in the study area.By analysis of reservoir forming condition,it is pointed out that buried hill of Pinghu slope,north section of Tiantai slope and Yingcuixuan fault belt of Hangzhou slope have better trap and migration conditions,which are new exploration directions of the western slope zone in Xihu Sag.关键词
油气成藏/圈闭类型/主控因素/勘探领域/西部斜坡带/西湖凹陷Key words
hydrocarbon accumulation/trap type/main controlling factors/exploration field/western slope zone/Xihu Sag分类
石油、天然气工程引用本文复制引用
刘志峰,李林致,李峰,廖计华,祁鹏..西湖凹陷西部斜坡带油气成藏主控因素与勘探新领域[J].海相油气地质,2025,30(1):71-81,11.基金项目
本文受国家重点研发计划课题"板块俯冲驱动下的流体循环机制及其效应"(编号:2022YFF0800403)和自然资源部部委重大课题"资源评价方法与资源潜力综合研究"(编号:2022-KK-01)联合资助 （编号:2022YFF0800403）
