羌塘盆地构造单元划分及含油气评价

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (6): 509-512.

羌塘盆地构造单元划分及含油气评价

余家仁, 雷怀玉, 王权, 刘趁花

中国石油华北油田分公司勘探开发研究院河北任丘 062552

收稿日期:2002-04-16 出版日期:2003-12-01 发布日期:2020-08-24
作者简介:余家仁(1934-),男,湖北黄梅人，高级工程师,石油地质。联系电话:0317-2721315

The Classification of Structural Element in Qiangtang Basin and the Preliminary Evaluation

YU Jia-ren, LEI Huai-yu, WANG Quan, LIU Chen-hua

Research Institute of Exploration and Development, Huabei Oilfield Company, PetroChina, Renqiu, Hebei 062552, China

Received:2002-04-16 Online:2003-12-01 Published:2020-08-24

摘要/Abstract

摘要： 利用羌塘盆地及其邻区的磁力、重力、电磁测深、地面地质调查、少量地震及有关化验分析数据,对盆地进行了构造单元划分和初步评价。该盆地以前泥盆纪变质岩为基底,其上可以划分出三套构造层:泥盆系-中三叠统为下构造层、上三叠统-侏罗系为中构造层、白垩-第三系为上构造层。运用多种资料综合分析后,在羌塘盆地划分出北羌塘坳陷、中央隆起带及南羌塘坳陷等三个二级构造单元,并进一步细分出12个三级构造单元。通过石油地质基本特征的研究,对12个三级构造单元进行了含油气远景初步评价,指出吐坡错-白滩湖深凹陷和蒂让碧错-土门凹陷为有利的含油气单元,应作为盆地油气勘探的重要目标。

关键词: 羌塘盆地, 构造单元, 含油远景

Abstract: The classification of structural element and preliminary evaluation of Qiangtang basin are performed based on its magnetic, gravitational, electromagnetic sounding, surface geologic survey and a few seismic information as well as related experiment alanalysis data.Above the pre-Devonian basement,this basin can be divided into three structural zones from bottom to top, i.e., Devonian-Middle Triassic, Upper Triassic-Jurassic and Cretaceous-Tertiary. Through composite analyses of various data and information, the basin can also be divided into three grade-Ⅱ elements such as north Qiangtang depression, central uplift belt and south Qiangtang depression, which can further be subdivided into 12 elements of grade-Ⅲ. According to their petroleum geologic features, this paper presents preliminary evaluations of petroliferous potentials of these 12 elements, and points out that Tupocuo-Bai-tanhu deep sag and Dirangbicuo-Tumen sag are favorable petroliferous elements and could be as major targets for oil-gas exploration in Qiangtang basin.

Key words: Qiangtang basin, structural element, petroliferous potential

中图分类号:

TE111.2

余家仁, 雷怀玉, 王权, 刘趁花. 羌塘盆地构造单元划分及含油气评价[J]. 新疆石油地质, 2003, 24(6): 509-512.

YU Jia-ren, LEI Huai-yu, WANG Quan, LIU Chen-hua. The Classification of Structural Element in Qiangtang Basin and the Preliminary Evaluation[J]. Xinjiang Petroleum Geology, 2003, 24(6): 509-512.

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