准噶尔盆地中拐凸起侏罗系油藏油气成因分析  

OIL/GAS ORIGIN OF JURASSIC RESERVOIRS IN ZHONGGUAI BULGE,JUNGGAR BASIN

作　　者：刘翠敏[1] 向宝力[1] 孟皓锦[1] 戴文英[1] 王萍[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院

出　　处：《天然气勘探与开发》2008年第2期26-27,共2页Natural Gas Exploration and Development

摘　　要：油气源对比结果表明,准噶尔盆地中拐凸起侏罗系原油分为三类:第一类原油来源于沙湾凹陷和盆1井西凹陷二叠系风城组烃源岩;第二类原油来源于沙湾凹陷和盆1井西凹陷二叠系下乌尔禾组烃源岩;第三类原油来源于风城组烃源岩和乌尔禾组烃源岩的混源;研究区域中的天然气为腐殖型天然气,并与第二类原油同源;侏罗系原油遭受生物降解在平面上和纵向上呈规律性分布。Oil/gas source rock correlation indicates that Jurassic crude oil in Zhongguai bulge ,Junggar Basin, can be classified into three types: Type I originates from Permian Fengcheng Formation source rocks in both Shawan sag and Pen 1 well of west sag; Type II originates from Lower Wuerhe Formation source rocks in both Shawan sag and Pen 1 well of west sag;Type III originates from mixed source rocks in Fengcheng Formation and Wuerhe Formation. However, the gas in studied area belongs to humic-type natural gas and originates from the same source rock as type II. Jurassic crude oil, suffered from biodegradation, distributes regularly at the longitude and in the plane.

关 键 词：准噶尔盆地 中拐凸起 侏罗系油藏 油源对比 生物降解 

分 类 号：P618.13[天文地球—矿床学]