PETROLEUM GEOLOGY CONDITION ANALYSIS ON THE MESOZOIC OF THE CUOQIN BASIN IN TIBET
-
摘要: 根据野外石油地质调查、室内分析研究和前人的资料及研究成果,对西藏措勤盆地的烃源岩、储集岩、盖层等石油地质条件进行了分析,认为措勤盆地中生界发育烃源岩主要有3套:郎山组—捷嘎组灰岩和泥灰岩、多尼组川巴段泥岩和接奴群泥晶灰岩;储集岩主要为郎山组和多尼组灰岩(礁灰岩)、白云岩和砂岩;盖层有多尼组泥质岩和郎山组泥灰岩。野外调查中发现了大量地表油气显示,并在包裹体中发现了沥青质,表明盆地经历了油气生成、运移、聚集和散失的过程,具有油气生成的物质基础和油气成藏的石油地质条件,显示出措勤盆地良好的油气远景。Abstract: According to the petroleum geologic research of outcrop,the test analysis of the rock samples,and the datum or results of the predecessors,this paper had researched the petroleum geological conditions of Cuoqin Basin integratively,such as the hydrocarbon rock,reservoir rock and cap rock.The result suggest that the Cuoqin Basin in Mesozoic have three units source rocks(limestone and marlstone of Langshan Formation-Jiega Formation,mudstone of Chuanba section of Duoni Formation,marlstone of Jienu Group),three kinds of reservoir rocks(reef-limestone,dolostone and sandrock of Langshan Formation and Duoni Formation),two units cap rocks(mudstone of Duoni Formation and limestone of Langshan Formation).Furthermore,the discovery of oil exposure and the bituminous of fluid inclusions showed that the Cuoqin Basin had underwent the process of oil and gas generated,migrated,gathered and lost,possesses the material foundation of oil and gas generation and the petroleum geologic conditions of hydrocarbon accumulation.All the evidences indicate that the Cuoqin Basin has good prospect of oil and gas exploration.
-
Key words:
- source rock /
- reservoir rock /
- cap rock petroleum geology condition /
- Cuoqin Basin /
- Tibet /
-
[1] 王成善,伊海生,李勇,等.羌塘盆地地质演化与油气远景评价[M].北京:地质出版社,2001:184-215. [2] 赵政璋,李永铁,叶和飞,等.青藏高原海相烃源层的油气生成[M].北京:科学出版社,2000:610-613. [3] 赵政璋,李永铁,叶和飞,等.青藏高原羌塘盆地石油地质[M].北京:科学出版社,2000:356-367. [4] 赵政璋,李永铁,叶和飞,等.青藏高原大地构造特征及盆地演化[M].北京:科学出版社,2000:1-439. [5] 南征兵,李永铁,郭祖军.羌塘盆地油气显示及油源对比[J].石油实验地质,2008,30(5):503-507. [6] 杜佰伟,陈明.羌塘盆地上侏罗统索瓦组烃源岩分布特征及远景分析[J].石油实验地质,2008,30(2):174-178. [7] 王成善,伊海生,刘池洋,等.西藏羌塘盆地古油藏发现及其意义[J].石油与天然气地质,2004,25(2):139-143. [8] 伍新和,张丽,王成善,等.西藏羌塘盆地中生界海相烃源岩特征[J].石油与天然气地质,2008,29(3):348-354. [9] 刘增谦,潘桂棠.西藏特提斯地质[M].北京:地质出版社,1990:94-98. [10] 余光明,王成善,张哨楠.西藏特提斯中生代沉积盆地特征及演化[J].中国科学(B辑),1989(9):982-990. [11] 王成善,张哨楠.青藏高原含油气盆地分析及油气资源预测[J].地球科学——中国地质大学学报,1996,21(2):120-129. [12] 费琪,邓忠凡.西藏特提斯构造域海相油气前景[J].地球科学——中国地质大学学报,1996,21(2):113-119. [13] 王成善,张哨楠.藏北双湖地区三叠系油页岩的发现[J].中国地质,1987(8):29-31. [14] 孔祥儒,王谦身.西藏高原西部综合地球物理与岩石圈结构研究[J].中国科学(D辑),1996,26(4):308-315. [15] 杨华.青藏高原航磁图展示的地球物理特征及其地质构造意义[J].地球物理学报,1985,28(增刊I):185-195. [16] 熊绍柏,刘宏兵.青藏高原西部的地壳结构[J].科学通报,1997,42(12):1309-1312. [17] 熊盛青,周伏洪,姚正煦,等.青藏高原中西部航磁调查[M].北京:地质出版社,2001:1-221. [18] 殷秀华,黎益仕,冯华.青藏高原重力场特征和地壳构造[J].物探与化探,1998,22(6):440-445. [19] 王冠民.西藏措勤盆地构造沉积演化及含油气远景[J].石油学报,2001,22(1):31-35. [20] 丁俊,王剑,王成善,等.青藏油气资源战略选区[M].北京:地质出版社,2008:20-200.
计量
- 文章访问数: 1401
- HTML全文浏览量: 58
- PDF下载量: 783
- 被引次数: 0