海相油气地质2024，Vol.29Issue(4)：413-422,10.DOI:10.3969/j.issn.1672-9854.2024.04.007
四川盆地华蓥山西侧低缓构造区石炭系黄龙组分布与圈闭条件
Distribution and trap conditions of the Carboniferous Huanglong Formation in the low and gentle structural area on the western side of Huaying Mountain,Sichuan Basin
摘要
Abstract
Since the 1980s,the porous dolomite reservoir of Huanglong Formation of Carboniferous in Sichuan Basin has been an important exploration object and a key production layer in the east Sichuan Basin.With the gradual increase of reserves utilization,it is urgent need for discovery and replacement of new reserves.In recent years,with the addition of high-quality seismic data,combined with drilling and outcrop data,comprehensive geological analysis of Carboniferous strata,Silurian hydrocarbon sources and reservoir-forming conditions on the western side of Huaying Mountain has been made,and three main understandings have been obtained:(1)Carboniferous strata are distributed in a large area on the western side of Huaying Mountain.The favorable area of carbonate rocks is over 8 000 km2,and the predicted thickness is up to 40 m,which provides stratigraphic and sedimentary basis for the formation of large-scale reservoirs.(2)Pingchang-Bazhong and Guang'an-Quxian large trap groups with a total area of 5 460 km2 are developed under the control of paleo-uplift slope belt,stratigraphic denudation belt and fault belt,which have favorable conditions for large-scale reservoir formation;(3)The Pingchang-Bazhong trap development area,if the Carboniferous reservoir is developed,has good gas source conditions,well-developed structural traps,and favorable accumulation combination of lower sources and upper reservoirs,so it is a favorable area to explore for large-scale natural gas reserves.关键词
碳酸盐岩/薄层预测/圈闭条件/成藏条件/石炭系/华蓥山西侧/四川盆地Key words
carbonate rock/thin layer prediction/trapping conditions/accumulation conditions/Carboniferous/western side of Huaying Mountain/Sichuan Basin分类
能源科技引用本文复制引用
谷明峰,李文正,张建勇,董景海,付小东,应玉双,朱茂,田兴旺,朱可丹,叶茂,朱心健..四川盆地华蓥山西侧低缓构造区石炭系黄龙组分布与圈闭条件[J].海相油气地质,2024,29(4):413-422,10.基金项目
本文受中国石油重大科技专项所属课题"碳酸盐岩油气富集规律及有利区带研究"(编号:2023ZZ16YJ01)资助 （编号:2023ZZ16YJ01）
