中国裂谷盆地高效大中型气田形成的封盖条件  

Sealing condition for high effective large and medium scale gas fields formation in rift basins in China

作　　者：徐东方[1] 

机构地区：[1]大庆油田有限责任公司第一采油厂,黑龙江大庆163001

出　　处：《大庆石油地质与开发》2008年第3期22-24,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家"973"重点基础研究项目"高效大气田形成机理与分布研究"(2001CB209104)资助

摘　　要：通过我国裂谷盆地大中型气田盖层封盖特征分析,定义和求取了气藏盖层封盖能力综合评价参数和气藏天然气聚集效率。通过我国裂谷盆地中16个大中型气田天然气聚集效率与其盖层封盖能力综合评价参数之间关系研究得到,二者具有正比关系,即盖层封盖能力综合评价参数越大,天然气聚集效率越高;反之则越低。裂谷盆地高效大中型气田形成所需要的盖层封盖能力综合评价参数的下限值约为0.2×10-4Pa2.s。Through analysis on sealing characteristics of large and medium scale gas fields of rift basins in China, this paper defines and calculates comprehensive evaluation parameters of sealing capacity and gas accumulation efficiency for gas reservoir. Study on relation between gas accumulation efficiency and its sealing capacity comprehensive evaluation parameters of 16 large and medium scale gas fields of rift basins in China shows that, they have direct proportion relation, i. e. , the more the sealing capacity comprehensive evaluation parameter is, the higher the gas accumulation efficiency is, and vise versa. The minimum value of sealing capacity comprehensive evaluation parameter needed by high effective large and medium scale gas fields formation in rift basin is 0.2×10^-4Pa^2·s.

关 键 词：高效 大中型气田 盖层 封盖能力 裂谷盆地 

分 类 号：TE122.3[石油与天然气工程—油气勘探]