断陷盆地次生气藏成藏主控因素及成藏模式--以王府断陷泉一段-登娄库组碎屑岩气藏为例  

Main controlling factors and accumulation model of secondary gas reservoirs in faulted basins:taking the clastic gas reservoir from Quan 1 Member to Denglouku Formation in Wangfu Fault Depression as an example

作　　者：孙文铁[1,2] 李忠慧[1] 李忠诚[2] 楼一珊[1] 黄玉欣 SUN Wentie;LI Zhonghui;LI Zhongcheng;LOU Yishan;HUANG Yuxin(School of Petroleum Engineering,Yangtze University,Wuhan,Hubei 430100,China;Research Institute of Exploration and Development,Jilin Oilfield Company of PetroChina,Songyuan,Jilin 138000,China;School of Petroleum Engineering,Guangdong University of Petrochemical Technology,Maoming,Guangdong 525000,China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]中国石油吉林油田分公司勘探开发研究院,吉林松原138000 [3]广东石油化工学院石油工程学院,广东茂名525000

出　　处：《东北石油大学学报》2020年第6期94-102,I0006,I0007,共11页Journal of Northeast Petroleum University

基　　金：国家科技重大专项(2016ZX05047-005-006)。

摘　　要：基于王府断陷次生气藏源岩、断层、储层、盖层时空配置及储层非均质性等,分析断陷盆地天然气成藏主控因素,建立成藏模式。结果表明:近源反向断—砂垂向和远源不整合面侧向运移输导是主要运聚方式,天然气富集于Cs11、Wf1、C9井区。烃源岩、断层、储层及盖层的合理时空匹配关系控制天然气成藏,层位不同,成藏主控因素存在差异。储层非均质性影响有效储层分布,间接使气水关系复杂化;层间非均质性导致渗透性砂体呈透镜状分布;层内非均质性使储层存在向上变差、向下变差及内部夹层等类型。全区主要发育断阶—背斜型、断鼻—复合型2种成藏模式,断阶—背斜型成藏模式最有利。该结果可为王府断陷老井挖潜提供地质依据。The factors such as source rock,fault,reservoir,cap space and time distribution and reservoir heterogeneity were analyzed in the secondary gas reservoir of Wangfu Depression,the main controlling factors of natural gas accumulation were analyzed and the accumulation model was established.The results show that the lateral migration and transport of near-source reverse fault-sand vertical and far-source unconformity surface are the main modes of migration and accumulation,and the natural gas is concentrated in the wells of Cs11,Wf1 and C9.Natural gas accumulation is controlled by the reasonable spatiotemporal matching relation of source rock,fault,reservoir and cap,the main controlling factors of accumulation are different with different layers.Reservoir heterogeneity affects effective reservoir distribution and indirectly complicates gas-water relationship and interlaminar heterogeneity leads to lenticular distribution of permeable sand bodies.There are different types of intra-layer homogeneity such as upward variation,downward variation and internal interlayer.There are two types of accumulation models in the whole region,which are step-anticline type and broken-nose-compound type,the fault-anticline accumulation model is the most favorable.The results can provide geological basis for excavation of old wells in Wangfu Depression.

关 键 词：断陷盆地 次生气藏 主控因素 成藏模式 时空配置 储层非均质性 王府断陷 

分 类 号：TE121.3[石油与天然气工程—油气勘探]