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2011•Natural Gas Exploration and DevelopmentRequires access

SOURCE ROCK AND RESOURCE POTENTIAL OF UPPER PERMIAN IN SICHUAN BASIN

Shi Yuhua

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Abstract

In this paper,source rock of Upper Permian in Sichuan Basin is not only analyzed but also contrasted.Results show that:(1) gas in Upper Permian mainly comes from Permian source rock and belongs to proximal type;(2) some highly gas-generated zones are mainly in south Dabashan foothill belt,East Chongqing depression-fold belt,Nanchong slope belt,Micangshan foothill belt and Yilong-Pingchang depression belt;(3) the main Upper Permian resources are distributed in east Sichuan highly steep belt,Nanchong slope belt and Yilong-Pingchang depression belt;and(4) some evaluation belts with a high resource abundance include south Dabashan foothill belt,Yilong-Pingchang depression belt and north Dabashan foothill belt.So,all belts are the best favorable exploration ones for Upper Permian in Sichuan Basin.

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What this paper is about

In this paper,source rock of Upper Permian in Sichuan Basin is not only analyzed but also contrasted.Results show that:(1) gas in Upper Permian mainly comes from Permian source rock and belongs to proximal type;(2) some highly gas-generated zones are mainly in south Dabashan foothill belt,East Chongqing depression-fold belt,Nanchong slope belt,Micangshan foothill belt and Yilong-Pingchang depression belt;(3) the main Upper Permian resources are distributed in east Sichuan highly steep belt,Nanchong slope belt and Yilong-Pingchang depression belt;and(4) some evaluation belts with a high resource abundance include south Dabashan foothill belt,Yilong-Pingchang depression belt and north Dabashan foothill belt.So,all belts are the best favorable exploration ones for Upper Permian in Sichuan Basin.

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Available abstract

In this paper,source rock of Upper Permian in Sichuan Basin is not only analyzed but also contrasted.Results show that:(1) gas in Upper Permian mainly comes from Permian source rock and belongs to proximal type;(2) some highly gas-generated zones are mainly in south Dabashan foothill belt,East Chongqing depression-fold belt,Nanchong slope belt,Micangshan foothill belt and Yilong-Pingchang depression belt;(3) the main Upper Permian resources are distributed in east Sichuan highly steep belt,Nanchong slope belt and Yilong-Pingchang depression belt;and(4) some evaluation belts with a high resource abundance include south Dabashan foothill belt,Yilong-Pingchang depression belt and north Dabashan foothill belt.So,all belts are the best favorable exploration ones for Upper Permian in Sichuan Basin.

Key concepts: Permian, Geology, Sichuan basin, Structural basin, Paleontology, Geochemistry

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