二连盆地赛汉塔拉凹陷烃源岩有机相与烃源灶

发布时间：2018-02-26 03:17

本文关键词： 烃源岩有机相烃源灶赛汉塔拉凹陷二连盆地　出处：《岩性油气藏》2017年02期 　论文类型：期刊论文

【摘要】：在油气勘探过程中,有机相的研究有助于定量表征烃源灶。为了更好地分析二连盆地赛汉塔拉凹陷的勘探前景,应用大量岩石热解数据对烃源岩有机相进行划分,实现了对烃源岩的分类评价,同时结合烷烃参数、生物标志物参数和镜质体反射率标定烃源岩有机质成熟度,进而实现了对烃源灶的定量表征。研究表明:赛汉塔拉凹陷自下而上发育阿尔善组、腾一段和腾二段3套烃源岩,其中阿尔善组主要发育F相烃源岩,腾一段和腾二段主要发育D/E相烃源岩,兼有少量C相烃源岩,垂向上从阿尔善组到腾一段和腾二段下部再到腾二段上部,显示出F相—D/E相—F相的烃源岩分布特征;腾一段烃源灶为主力烃源灶,排烃强度为(500~3500)万t/km~2,阿尔善组烃源灶为次要烃源灶,排烃强度为(200~800)万t/km~2。研究结果为二连盆地赛汉塔拉凹陷资源潜力分析提供了依据。
[Abstract]:In the process of oil and gas exploration, the study of organic facies is helpful to the quantitative characterization of hydrocarbon source stoves. In order to better analyze the exploration prospects of Saihantala Sag in Erlian Basin, a large number of rock pyrolysis data are used to classify the organic facies of the source rocks. The classification and evaluation of source rocks are realized, and the maturity of organic matter of source rocks is calibrated with alkane parameters, biomarker parameters and vitrinite reflectance. The quantitative characterization of hydrocarbon source foci has been realized. The results show that three sets of source rocks are developed from the bottom to the top of Saihantala Sag, the Tengyi member and the second member of Tengshan formation, in which the F phase source rocks are mainly developed in the Alshan formation. The D- E facies source rocks are mainly developed in the Tengyi and Teng members, with a small amount of C source rocks. The hydrocarbon source rock distribution features of the F-D- E -F facies are shown from the Arshan formation to the lower part of the first member and the lower part of the second member to the upper part of the second member vertically. Teng formation hydrocarbon source stove is the main hydrocarbon source stove, hydrocarbon expulsion intensity is 3500) t / km-2, Alshan formation hydrocarbon source stove is secondary hydrocarbon source stove, and hydrocarbon expulsion intensity is 8 million t / km ~ 2. The results provide a basis for resource potential analysis of Saihantala depression in Erlian Basin.
【作者单位】：中国石油华北油田分公司勘探开发研究院;中国石油大学(北京)地球科学学院;西北大学研究生院;
【基金】：中国石油天然气股份有限公司重大科技专项“华北油田上产稳产800万吨关键技术研究与应用”(编号:2014E-35)资助
【分类号】：P618.13

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