准噶尔盆地陆梁地区油气运移方向研究  

HYDROCARBON MIGRATION DIRECTION IN LULIANG SECTION OF JUNGGAR BASIN

作　　者：陈中红[1] 查明[1] 吴孔友[1] 张年富[2] 

机构地区：[1]石油大学地球资源与信息学院,山东东营257061 [2]新疆油田勘探开发研究院,新疆克拉玛依834000

出　　处：《石油大学学报（自然科学版）》2003年第2期19-22,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：对准噶尔盆地陆梁地区油气运移方向的研究结果表明 ,陆梁油田的油气可能来源于盆 1井西凹陷和玛湖凹陷。进一步对两者油气可能运移路径的构造形态和运移通道条件进行了分析 ,认为盆 1井西凹陷的油气运移路径为一继承性的斜坡 ,深部的逆断裂和不整合面、中部的正断层及浅部的大套砂砾岩体可作为油气运移通道 ,其油气运移条件较玛湖凹陷有利。在此基础上 ,利用生物标志化合物w (甾烷C2 9ααα2 0S) /w (2 0S +2 0R)和w(C2 9ββ) /w(ββ+αα)、烷烃碳同位素δ13 C和原油碳同位素δ13 C、原油物性等指标在油气二次运移过程中发生的运移效应并结合流体势进行分析认为 ,陆梁地区主要的油气运移方向为西南东北向。证实了盆 1井西凹陷是该区主要的生油凹陷。The contrast of hydrocarbon source and the evolving structure history of Luliang region of Junggar basin indicated that the hydrocarbon mainly came from the western depression of Peng 1 well and Mahu depression. For Peng\|1 Well, the migration conditions were more favorable than Mahu depression,and the hydrocarbon migration paths were succeeding slopes. The thrust fault and unconformity surface in the deep formation, the normal fault in the middle and the grit at the bottom of Cretaceous system created the good conditions for hydrocarbon migration. Analysis on the migration effect using some parameters including geochromatography of biomarkers sterane \%w\%(C 29 ααα20S)/w(20S+20R) \%and \%w(\%C 29 ββ)/w(ββ+αα), alkyl hydrocarbon carbon isotope δ 13 C and crude oil isotope δ 13 \%C, and physical property of crude oil also validated that the distribution of fluid potential field revealed the following conclusion. The secondary migration direction of main hydrocarbon in Luliang section was from southwest to northeast, which shows that Peng\|1 well was the main oil depression, though Mahu depression could provide some hydrocarbon in earlier time.

关 键 词：准噶尔盆地 陆梁油田 油气运移 运移方向 二次运移 

分 类 号：P618.130.1[天文地球—矿床学] TE12[天文地球—地质学]