济阳坳陷孤北潜山天然气地球化学特征及成因分类  

Geochemical characteristics and genetic classification of the natural gas in Gubei buried hill,Jiyang depression,China

作　　者：郭春清[1] 沈忠民[1] 杨光[2] 陈义才[1] 罗小平[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《成都理工大学学报（自然科学版）》2009年第3期231-237,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(40772084)

摘　　要：运用天然气地球化学分析技术,详细剖析了济阳坳陷孤北潜山带天然气的组成、稳定碳同位素及轻烃色谱特征,从中提取出了反映天然气母源及热演化程度的有效信息,并依据天然气成因类型划分标准对其进行了分类。认为该区天然气皆为有机成因的热解气,其中古近系沙四段和奥陶系储层的天然气为油型气;石炭-二叠系储层的天然气部分为煤型气,部分为煤型气和油型气的混合气。After making geochemical analyses of gas composition, stable carbon isotope and light hydrocarbon chromatogram, the authors obtained the effective information of parent materials and thermal evolution degree, and the subsequent result of the genetic classification of the natural gas in the Gubei buried hill of Jiyang depression. It is concluded that the natural gas in this area is organic pyrolysis gas with different origin from above. The natural gas from the Paleogene and Ordovician reservoirs is petroliferous gas, a part of the natural gas from the Carboniferous-Permian reservoir is coal-related gas and the another part from the reservoir is the mixture of petroliferous gas and coalrelated gas.

关 键 词：天然气 碳同位素 轻烃 成因分类 孤北潜山 济阳坳陷 

分 类 号：TE122.113[石油与天然气工程—油气勘探]