苏北盆地天然气类型及成因分析  

Analysis on types and genesis of natural gas in Subei Basin

作　　者：罗义[1] 刘义梅[1] 段宏亮[1] LUO Yi;LIU Yimei;DUAN Hongliang(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009

出　　处：《复杂油气藏》2020年第2期22-27,共6页Complex Hydrocarbon Reservoirs

基　　金：中国石化科技项目“苏北盆地天然气成藏主控因素与勘探潜力研究”(P17011-2)。

摘　　要：苏北盆地烃类天然气在地下赋存方式多样,成因各异。为深化苏北盆地天然气形成和富集规律的研究,分析天然气组成成分、稳定碳同位素、轻烃组成特征以及由它们组成的参数等,将苏北盆地天然气划分为三种成因类型:原油生物降解气、热解凝析气及裂解气,并对刘庄气藏、永安地区天然气和朱家墩气田天然气进行了成因分析,将对苏北盆地天然气勘探具有一定的指导意义。Hydrocarbon natural gas in Subei Basin has various underground occurrence modes with different genesis.To further study on the formation and enrichment law of natural gas in Subei Basin,it was carried out the analysis on the composition of natural gas,stable carbon isotope,light hydrocarbon composition characteristics,and their formed parameters,and so on.On this basis,the natural gas in Subei basin can be divided into three genetic types:crude oil biodegraded gas,pyrolysis condensate gas and cracked gas.And then the geneses of natural gas in Liuzhuang,Yong'an,and Zhujiadun Gasfields were further analyzed.The study results have a certain guiding significance for the natural gas exploration in Subei Basin.

关 键 词：天然气组分 碳同位素 轻烃组成 天然气类型 成因分析 苏北盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]