新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (5): 526-529.

• 油气勘探 • 上一篇    下一篇

柴达木盆地北缘马北地区油源对比

彭立才1, 彭小群2, 汪立群2   

  1. 1.清华大学工程力学系, 北京 100084;
    2.中国石油青海油田分公司, 甘肃敦煌 736202
  • 收稿日期:2005-11-16 修回日期:2006-02-27 出版日期:2006-10-01 发布日期:2020-10-20
  • 作者简介:彭立才(1967-), 男, 安徽庐江人, 高级工程师, 石油地质与油气地球化学,(Tel) 010-62772925(E-mail) penglicai@mail.tsinghua.edu.cn

Oil and Source Rock Correlation in Mabei Area in Northern Margin of Qaidam Basin

PENG Li-cai1, PENG Xiao-qun2, WANG Li-qun2   

  1. 1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;
    2. Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
  • Received:2005-11-16 Revised:2006-02-27 Online:2006-10-01 Published:2020-10-20

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摘要： 柴达木盆地北缘马北地区不同构造上的原油分两大类。一类是该地区普遍分布的原油,包括马北1 井、马北101 井和马北3 井以及马北2 井后期注入的原油,这类原油主要来源于中侏罗统烃源岩,但在成熟度上存在显著差异: 马北1 井浅层和马北3 井原油来源于尕丘凹陷,属成熟原油; 马北1 井深层和马北101 井原油来源于赛什腾凹陷,为高成熟原油。另一类是马北2 井生物降解原油,来源于石炭系海陆交互相烃源岩。

关键词: 柴达木盆地, 烃源岩, 生物标志物, 油源对比

Abstract: Two kinds of crude oils occur in the different structures in Mabei area in northern margin of Qaidam basin. One is the oil broadly distributed in this area, including Mabei-1 Well, Mabei-101 Well, Mabei-3 Well and late filled oil in Mabei-2 Well. Such oils mainly originated from the source rocks of Middle Jurassic with distinction of maturity. The oil from shallow layer in Mabei-1 Well and Mabei-3 Well originated from Gaqiu sag, belonging to matured oil; while the oil from deep layer in Mabei-1 Well and Mabei-101 Well originated from Saishiteng sag, being highly matured oil. The other, biodegraded oil, was found in Mabei-2 Well, originating from transitional facies source rocks of Carboniferous in this area.

Key words: Qaidam basin, source rock, biomarker, oil and source rock correlation

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