阿克1井天然气气源探讨  

THE DISCUSSION OF NATURAL GAS SOURCE IN WELL AKE 1

作　　者：张秋茶[1] 王福焕[1] 肖中尧[1] 卢玉红[1] 吴懿[1] 

机构地区：[1]中国石油塔里木油田分公司,新疆库尔勒841000

出　　处：《天然气地球科学》2003年第6期484-487,共4页Natural Gas Geoscience

摘　　要：阿克1井是在塔里木盆地喀什凹陷获得工业气流的第一口探井,与该盆地其他地区相比,其天然气地球化学特征有着独特性:干燥系数大,非烃气体含量较高,甲烷碳同位素异常重(居塔里木盆地已发现的天然气之首),稀有气体3He/4He、40Ar/36Ar比值较大。根据区域烃源岩发育特征、源岩地球化学特征和热演化史,初步确定阿克1井的气源岩以石炭系为主。Well Ake 1 is the first exploratory well where commercial gas stream was found in Kashi sag in the west of Tarim basin.Geochemical features of its natural gas have idiographic properties with the contrast of ones of the others in Tarim basin:high desiccation coefficient, high content of CO\-2 and N2;heavy carbon isotope of CH\-4, which is the heaviest in Tarim basin;high value of rare gas 3He/4He and 40Ar/36Ar.We elementarily ascertain the prime source rock of gas of well Ake 1 is Carboniferous by growing feature of regional source rock ,combining geochemicalfeatures of source rock and history of heat evolving.

关 键 词：天然气 气源 喀什凹陷 地球化学特征 

分 类 号：TE122.1[石油与天然气工程—油气勘探]