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现代地质 ›› 2011, Vol. 25 ›› Issue (2): 315-321.

• 能源地质 • 上一篇    下一篇

柴达木盆地三湖坳陷第四系重矿物物源分析

刘群明1,陈开远2,王键1,徐雷3,滕飞启4,张培智5   

  1. 1.中国石油勘探开发研究院, 北京100083; 2.中国地质大学 能源学院, 北京100083;3.北京杰瑞特斯石油技术有限公司,
    北京100101; 4.中国石油 川庆钻探长庆录井公司, 陕西 西安710000;5.胜利油田 河口采油厂,山东 东营247200
  • 出版日期:2011-04-25 发布日期:2011-05-13
  • 作者简介:刘群明,男,博士研究生,1985年出生,油气田开发工程专业,主要从事油气田开发地质方面的研究工作。 Email: liuqunming10@163.com。

The Provenance Analysis of the Quaternary Heavy Minerals  in Sanhu Depression, Qaidam Basin

LIU  Qun-Ming1,CHEN  Kai-Yuan2,WANG  Jian1,XU  Lei3,TENG  Fei-Qi4,ZHANG  Pei-Zhi5   

  1. 1.Research Institute of Petroleum Exploration and Development, PetroChina, Beijing100083, China; 2.School of Energy Resources,
    China University of Geosciences, Beijing100083, China; 3.Georeservoir Research Company Limited, Beijing100101, China;
    4.Changqing Mud Logging Company,CNPC Chuanqing Drilling & Exploration Corporation, Xi an, Shaanxi710000, China;
    5.Hekou Oil Production Plant, Shengli Oilfield, Dongying, Shandong247200, China
  • Online:2011-04-25 Published:2011-05-13

摘要:

岩性圈闭作为三湖坳陷下一步勘探的主要对象,明确物源区及各源区对坳陷内部的影响范围是首要任务。依照 重矿物“相关性分析定母岩类型、因子分析定物源主次、Q聚类分析定影响范围、稳定系数分析定物源方向”的研究思路,综合分析研究区内所有重矿物数据的数理统计特征,发现工区母岩类型主要为变质岩、中基性喷出岩和少量沉积岩,分别对应南部昆仑山主要物源、东北埃姆尼克山次要物源和北部祁连山弱物源。南部物源主要控制南斜坡区沉积,但其中西南昆仑山—那北分支物源影响范围可达北斜坡台南—涩北气田一带;东北物源对坳陷内部影响范围局限在盐湖、哑叭尔及察尔汗一带;北部物源对区内沉积起微弱作用。

关键词: 三湖坳陷, 重矿物, 物源分析, 相关性分析, 因子分析, 聚类分析, 柴达木盆地

Abstract:

Since lithologic trap is the mainly continuing exploration object of Sanhu Depression, confirming the provenance and the respective influence area on the inside of the depression is the current priority task.Research thought of the provenance analysis of heavy minerals is as follows: correlation analysis determines source rock types; factor analysis determines provenance levels; Q type cluster analysis determines influence area; stability coefficient determines transportation direction.According to that thought, the whole heavy minerals data of the study area is processed.Comprehensive analysis of mathematical statistics results shows: the source rock types of work area are mainly metamorphic, medium-basic eruptive and few sedimentary rock, which respectively respond to the south Kunlun Mountain primary provenance, the north- east Aimunike Mountain secondary provenance and the north Qilian Mountain slight provenance. The south provenance not only controls the sedimentation of South Slope, also has an effect on the Sebei.Tainan Gas Field area of North Slope sedimentation which is controlled by the Kunlun Mountain-Nabei branch provenance. Northeast provenance has limited influence area which covers Yanhu, Yabaer, and Chaerhan. There is slight influence of the north provenance on the inside sedimentation of depression.

Key words: Sanhu Depression, heavy mineral, provenance analysis, correlation analysis, factor analysis, type cluster analysis, Qaidam Basin

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