断块圈闭控藏模式——以辽河盆地西部凹陷为例  

Hydrocarbon accumulation model of fault block trap-a case study of west sag of Liaohe basin

作　　者：冷济高[1] 庞雄奇[2] 杨克明[3] 叶军[3] 徐兴平[4] 

机构地区：[1]中国石化西南油气分公司博士后科研工作站,四川成都610081 [2]中国石油大学(北京)盆地与油藏研究中心,北京102249 [3]中国石化西南油气分公司,四川成都610081 [4]中国石化股份胜利油田分公司海洋采油厂,山东东营257237

出　　处：《油气地质与采收率》2011年第2期1-6,111,共6页Petroleum Geology and Recovery Efficiency

基　　金：中国石油天然气股份有限公司重大科技项目"辽河探区西部凹陷油气深化勘探理论与实践"(07-01C-01-04)

摘　　要：中国东部断块圈闭油气资源丰常丰富,通过对辽河盆地西部凹陷179个断块圈闭解剖,阐述了断块油气藏的基本特征及其分布的主控因素。按成因类型将断块圈闭划分2大类共计5种类型,即层内同层砂岩对接、层内异层砂岩对接、层外反向断层砂岩对接、层外同向断层砂岩对接和砂泥岩对接,并对其成因机制进行了探讨;在同向和反向断层控藏特征分析基础上,认为影响断块圈闭的3个主要因素是断层垂直断距、储层砂岩视厚度和盖层泥岩视厚度,并且指出三者之间的相互关系与断层圈闭的大小和形态密不可分,进而提出了断块圈闭三元耦合控藏模式,并对其进行了验证。There are abundant oil and gas resources of fault block reservoirs in the western China. By anatomizing of 179 fault block reservoirs discovered in west sag of Liaohe basin, this paper presents the basic characteristics and summarizes the main controlling factors of them. The types of fault block trap formed by sand-shale juxtaposition can be divided into two large classes (five subclasses) according to the genesis: the sand-sand self-juxtaposition and sand-sand self-separated juxtaposition in a layer,sand-sand juxtaposition on the both walls of synthetic fault and of antithetic fault in different layers, and sand-shale juxtaposition in and out, and then formation mechanism of them is discussed herein. The development of fault block trap is controlled by the relationship among fault vertical lag, reservoir sandstone apparent thickness and apparent thickness of cap mudstone. This paperpresents the model of ternary coupling factors that have controlled fault block trap, and verifies the effectiveness of this model.This approach is particularly useful for evaluating fault block trap.

关 键 词：断块圈闭 岩性对接 成因分类 成因机制控藏模式 三元耦合 辽河盆地 

分 类 号：TE112.3[石油与天然气工程—油气勘探]