摘要
本文对江苏地区五个典型气藏(田)进行了地质特征简析,并根据各气藏中天然气地化特征,探讨主要气的成因类型。研究认为,刘庄气藏是生物气为主伴有少量低熟热解气的混合气类型;周庄气藏属石油伴生气类型;永安气藏是源岩高演化的凝析气,溪桥浅层气藏和黄桥 CO_2气田中的栖霞组气藏、茅山组气藏是高熟的凝析气,五通组气藏是过熟的裂解气。CO_2气是无机成因,来源于岩浆-火山气和地幔深处。
This paper gives an analysis of the geological features of five typical gas reservoirs(fields)in Jiangsu province and a discussion on the main origin of the natural gas based on the geochemical characteristics of the gas in these reservoirs respectively.According to the results of this study,gas in Liuzhuang reservoir is mainly biogenic gas with a small amount of low matured thermally cracked gas,gas in Zhouzhuang reservoir is petroliferous gas(associated gas);gas in Yongan reservoir is condensate gas originated from highly evolutional source rocks;gases in Xiqiao shallow reservoir,Qixia and Maoshan reservoirs in Huangqiao CO_2 field are highly matured condens- ate gas;gas in Wutong gas reservoir is overmatured cracked gas;and CO_2 gas is inorganic gas originated from magma-volcanic gas from deep mentle.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1992年第2期20-28,35,共10页
Petroleum Exploration and Development
