格斯断槽侏罗系暴露烃源岩地球化学综合研究  

COMPREHENSIVE STUDY ON THE GEOCHEMISTRY OF THE JURASSIC EXPOSED SOURCE ROCKS IN THE GESI FAULT TROUGH

作　　者：甘贵元[1] 尹成明[1] 张鹏[1] 朱叶倩 陈登钱[1] 崔俊[1] 

机构地区：[1]青海油田公司勘探开发研究院,甘肃敦煌736202

出　　处：《石油实验地质》2001年第1期93-96,共4页Petroleum Geology & Experiment

摘　　要：近 3年来 ,格斯断槽多次的石油地质调查和综合研究取得了重要成果。在第三系砂岩和侏罗系碳酸盐岩中均发现了油砂 ,地面出露有巨厚的侏罗系和第三系地层 ,烃源岩主要是分布在侏罗系中、下统 (J1 +2 )地层中的黑色泥质岩和碳酸盐岩。泥质烃源岩占侏罗系中、下统地层厚度的 32 .8%～ 46 .1% ,碳酸盐岩主要发育在黑水沟地区 ,占侏罗系中、下统的 30 .5 %。地面露头样品分析结果的综合研究显示 ,其泥质烃源岩是有机质类型好、丰度高、高成熟度的好烃源岩 ,碳酸盐岩烃源岩是有机质类型更好、高丰度、高成熟度的最好烃源岩。广泛分布的泥质烃源岩是格斯断槽最主要的油气源岩 。In recent three years, important achievements have been obtained from many times of petroleum geological investigation and comprehensive research.Oil sand is discovered in the Tertiary sandstones and the Jurassic carbonate rocks. The Jurassic and Tertiary megathick strata is outcropping from ground. Hydrocarbon source rocks are mainly black argillaceous rocks and carbonate rocks distributed in the Middle-Lower Jurassic (J 1+2 )strata.Argillaceous source rocks make up 32.8-46.1 per cent of the Middle-Lower Jurassic stratum thickness, while cardonate source rocks, which are mainly developed in Heishuigou region, amount to 30.5 per cent. Comprehensive study on the analytical results of outcropped surface samples show that argillaceous source rocks are good hydrocarbon source rocks with the good types, high abundance and high maturity of organic matter, and carbonate source rocks are the best with the well types, high abundance and high maturity of organic matter. Widespread argillaceous source rocks are the most major hydrocarbon source rocks in the Gesi Fault Trough, and carbonate source rocks mainly distributed in the east are important hydrocarbon source rocks.

关 键 词：烃源岩 有机质化 件罗系 格斯断槽 库木库里盆地 油气地质 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]