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Characteristics of Triassic Petroleum Systems in the Longmenshan Foreland Basin, Sichuan Province, China

WU Shixiang JIN Zhijun TANG Liangjie BAI Zhenrui

地质学报（英文版）2008，Vol.82Issue(3)：554-561,8.

Characteristics of Triassic Petroleum Systems in the Longmenshan Foreland Basin, Sichuan Province, China

WU Shixiang ¹JIN Zhijun ¹TANG Liangjie ²BAI Zhenrui³

作者信息

1. SINOPEC Petroleum Exploration and Production Research Institute, Beijing 100083
2. Basin and Reservoir Research Center, China University of Petroleum,Changping, Beijing 102249
3. Key Laboratory for Hydrocarbon Accumulation Mechanism, Ministry of Education, China University of Petroleum, Changping, Beijing 102249, China
折叠

摘要

Abstract

The Triassic in the Longmengshan foreland basin is rich in oil and gas resources. Its reservoirs feature low-porosity, low-permeability, small pore throat, high water saturation, and strong heterogeneity. The existence of abnormally high pressure and various reservoir-cap combinations developed at different times provide favorable conditions for trapping oil and gas. Taking the theory of petroleum systems as a guide, and beginning with research on tectonics, sedimentary history, distribution and evolution of source rocks, reservoir evolution, hydraulic force distribution, and hydrocarbon migration, analysis and study of static factors like source rocks, reservoirs and cap rocks, and dynamic factors such as hydrocarbon generation, migration, and accumulation revealed the characteristics of the Upper Triassic petroleum system in western Sichuan province. The deepbasin gas in the central hydrocarbon kitchen of the Upper Triassic, structurai-lithological combination traps on the surrounding slopes, and the structural traps of the Indo-Chinese-Yangshan paleohighs, are potential plays. The relatively well- developed fault zones in the southern segment of the Longmengshan foothill belt are favorable Jurassic gas plays. Pengshan-Xinjin, Qiongxi, and Dayi are recent exploration targets for Jurassic oil/gas reservoirs.

关键词

Longmengshan foreland basin, Upper Triassic, petroleum system, oil/gas, Sichuan

Key words

Longmengshan foreland basin, Upper Triassic, petroleum system, oil/gas, Sichuan

分类

天文与地球科学

引用本文复制引用

WU Shixiang,JIN Zhijun,TANG Liangjie,BAI Zhenrui..Characteristics of Triassic Petroleum Systems in the Longmenshan Foreland Basin, Sichuan Province, China[J].地质学报（英文版）,2008,82(3):554-561,8.

基金项目

This research was financed by the national "973" project Nos 2005CB422100 and G19990433. （）

地质学报（英文版）

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ISSN：1000-9515

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