新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (4): 360-362.

• 油气勘探 • 上一篇    下一篇

柴达木盆地西南地区沉积物源及储集层物性研究

刘云田, 杨少勇   

  1. 中国石油 青海油田分公司勘探事业部,甘肃 敦煌736202
  • 收稿日期:2005-02-03 出版日期:2005-08-01 发布日期:2020-11-23
  • 作者简介:刘云田(1962-),男,山东潍坊人,高级工程师,博士,矿床地质,(Tel)0937-8932503.

Sedimentary Provenances and Reservoir Qualities in Southwestern Qaidam Basin

LIU Yun-tian, YANG Shao-yong   

  1. Department of Exploration, Qinghai Oilfeld Company, PetroChina, Dunhuang, Gansu 736200, China
  • Received:2005-02-03 Online:2005-08-01 Published:2020-11-23

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摘要： 综合运用电子探针重矿物分析法对柴西南地区下干柴沟组的沉积物源进行了深入研究,通过研究可以确定,柴西南地区E1+23时期主要有七个泉一阿哈堤物源区、阿拉尔物源区、祁漫塔格物源区以及东柴山物源区;其重矿物组合分为8个亚区,不同物源所形成的沉积物特征和相类型有一定 差异:七个泉-阿哈堤物源区以近距离、重力流沉积为主;阿拉尔物源区以中细粒级、河流-湖泊沉积为主;而祁漫塔格物源区和东柴山物源区以细粒级、湖泊沉积作用为主。研究预测，研究区中部物源沉积区的储集层性质总体上较优,其次为北部物源沉积区,而南部物源沉积区的储集层性质差。

关键词: 柴达木盆地, 西南部, 重矿物, 物源, 储集层, 物性

Abstract: Integrating with heavy mineral analysis, the study presents that during E,2 in the southwestern Qaidam basin there exist several sedimentary provenances such as Qigequan- Ahadi, Alaer, Qimantage and Dongchaishan, with heavy mineral assembl ages of eight sub-areas. These provenances are of some diferences in the sedimentary characteristics and facies types: Qigequan-Ahadi is doninated by short-distance and gravity flow deposits; Alaer dominated by medium-fine and fluvial-lacustrine deposits， and Qimantage and Dongchaishan dominated by fine lacustrine deposits or sedimentation. It is predicted that the provenance in the middle part of study area is generally premium in reservoir quality, the north part is secondary, and the southwestern part is poor.

Key words: Qaidam basin, southwest, heavy mineral, provenance, reservoir, reservoir quality

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