定北地区上古生界天然气成藏类型及模式  

Types and Models of Gas Accumulation in Upper Paleozoic in Dingbei Area

作　　者：赵荣华[1] ZHAO Rong-hua(Research Institute of Exploration and Development of North China Oil-Gas Branch of Sinopec,Zhengzhou 450006,China)

机构地区：[1]中国石化华北油气分公司勘探开发研究院,河南郑州450006

出　　处：《河北地质大学学报》2021年第3期37-40,共4页Journal of Hebei Geo University

基　　金：国家科技重大专项"低丰度致密低渗油气藏开发关键技术"(2016ZX05048)。

摘　　要：定北地区石炭-二叠系砂体是油气运移的主要输导系统,裂缝在局部地区改善或提高了砂体的输导能力。源储距离和砂体叠置区在很大程度上决定了天然气的主要充注区。总结出主要的充注路径模式为:砂体连通性+砂体成岩相。通过气藏解剖,对研究区的成藏类型进行了划分,划分为四种类型:分别为源内充注型气藏、近源充注型气藏、远源充注型气藏和断砂组合型气藏。通过对天然气聚集和逸散破坏的过程进行分析,研究区的气水分布表明天然气的充注主要以源内充注,近源充注,远源充注以及断砂组合式充注,并总结出了气水分布模式及成藏模式。The Carboniferous Permian sand body in Dingbei area is the main transporting system of oil and gas,and the fracture improves or enhances the transporting ability of sand body in local area.To a great extent,the source reservoir distance and sand body superimposed area determine the main filling area of natural gas.It is concluded that the main filling path mode is sand body connectivity+sandstone diagenetic facies.According to the gas reservoir anatomy,the types of gas accumulation in the study area are divided.It can be divided into four types,namely,in source gas reservoir,near source gas reservoir,far source gas reservoir and fault sand combination type gas reservoir.Based on the analysis of the process of natural gas accumulation and dissipation,the distribution of gas and water in the study area shows that the filling of natural gas is mainly in source filling,near source filling,far source filling and sand breaking combined filling.The gas water distribution mode and reservoir forming mode are summarized.

关 键 词：定北地区 天然气充注 成藏类型 气水关系 

分 类 号：TE122[石油与天然气工程—油气勘探]