辽河滩海地区西部凹陷成藏条件与成藏模式  

HYDROCARBON POOL-FORMING CONDITIONS AND ACCUMULATION MODELS IN THE WEST SAG OF TANHAI AREA, THE LIAOHE BASIN

作　　者：方世虎[1] 徐怀民[2] 郭召杰[1] 焦翠华[2] 孟卫工[3] 李建明[4] 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]石油大学资源与环境学院,北京昌平102249 [3]辽河油田分公司,辽宁盘锦124000 [4]塔里木油田公司,新疆库尔勒841000

出　　处：《石油实验地质》2004年第3期223-228,共6页Petroleum Geology & Experiment

基　　金：国家重大基础研究(973)项目(2001CB409804).

摘　　要：岩心分析和测井标定综合分析表明,辽河滩海西部凹陷发育沙三段和沙一二段两套有效烃源岩,主要分布在海南洼陷带。油气输导层主要由断裂(带)、连通的砂砾岩体和不整合面构成,它们或单独、或组合,控制着主要油气富集带的油气输导及聚集成藏。复合圈闭带控制着复合油气聚集带的形成,各复合油气聚集带的成藏条件相互匹配,形成特征油气成藏模式和油气分布规律。Hydrocarbon in the West Sag of Tanhai area, the Liaohe Basin was mainly derived from the source rocks of the Es^3 and Es^(1+2) Member. By integrating the methods of well core analyzing and logging calibrating, the effective thickness of source rocks and their distribution were determined. Faults, connec-ting sandstones and unconformities were the three main pathways of petroleum migration in the study area. They singly, or combined with others, controlled the migration and accumulation of oil and gas around main hydrocarbon-bearing zones. Moreover, composite trap zones led to the formation of composite hydrocarbon accumulation zones. Hydrocarbon pool-forming conditions matched with each other, and formed characteristic accumulation models and distribution rules in every composite hydrocarbon accumulation zone. The distribution of oil and gas was clarified for guiding the future petroleum exploration of the area.

关 键 词：烃源岩 输导层 成藏模式 复合圈闭带 辽河滩海 

分 类 号：TE122.3[石油与天然气工程—油气勘探]