摘要
中、下侏罗统煤系为准噶尔盆地天然气藏的主要源岩，砂岩体、断层及不整合面为主要通道，三工河组上部和八道河组上部泥岩为区域盖层。以古气势为依据，盆地内可以划分出若干个运聚系统：莫索湾－石西运聚系统可以寻找到中低丰度的天然气聚集；石河子－呼图壁运聚系统可能有重大发现；滴西－阜康运聚系统中，除彩南地区已发现三工河组气田外，阜康东北地区亦是另一有利区；小拐－车排子运聚系统、玛湖运聚系统则难以形成大的天然气聚集。准噶尔盆地侏罗系主要存在原生和残余次生两大类４小类油气藏。
Middle-Lower Jurassic coal measures are the main source rocks of gas pools in Junggar Basin; sand bodies, faults and uncomfomities are migration pathways; the upper parts of Sangonghe and Badaohe Formations are regional cover rocks. Several hydrocarbon migration-accumulation systems could be divided within the basin such as Mosowan-Shixi migration-accumulation system containing gas pools of middle-lower abundance; Shihezi-Hutubi migration-accumulation system in which important hydrocarbon discovery might be found; Dixi-Fukang system in which Saogonghe Formation Gasfield was discovered and northeast Fukang region may be another favourable area; Xiaoguai-Chepaizi and Mahe systems which are less favourable for gas accumulation. In summary, two types of primary and residual secondary gas pools including 4 subtypes were found in Jurassic System in Jurassic Basin.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2001年第2期133-136,共4页
Oil & Gas Geology
基金
国家"九五"重点科技攻关课题96-110-05-03-03部分成果
关键词
侏罗统
煤系
天然气藏
运聚系统
准噶尔盆地
特征
Middle-Lower Jurassic
coal measures
gas pool
migration-accumulation system
Junggar Basin
