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Advances and discussion about the study on deep basin gas in western Sichuan province depression(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第02期
Page:
34-37,46
Research Field:
Publishing date:

Info

Title:
Advances and discussion about the study on deep basin gas in western Sichuan province depression
Author(s):
PU Jun1; ZHANG Jin-chuan2; WANG Zhi-xin1; ZHANG Jie3
1. Basin and Reservoir Research Center, University ofPetroleum, Beijing 102249, China; 2. China University ofGeosciences, Beijing 100083, China;3. Petroleum Exploration and Development Research Institute, Sinopec, Beijing 100083, China
Keywords:
deep basin gas source-contacting gas accumulation); western Sichuan province depression; Xujiahe Formation; assessment of gas reservoir
PACS:
P531
DOI:
-
Abstract:
Western Sichuan province depression has geological conditions similar to Alberta basin of Canada in which deep basin gas most probably was formed. However, detailed study showed that the intensity of structural reversion, pressure attributes of gas- bearing strata, and the time of gas generation of source rocks of these two basins are quite different. So it is not reasonable torta basin. For the purpose of studying the accumulation mechanism and distribution discipline of gas reservoirs of western Sichuan province depression, it will be better to start with practical geological conditions of that depression, rather than to simply compare it with an available model. It is thought that the gas pools in western Sichuan province depression have the feature of reversed gas- water contact. As only a few data of formation pressure are available, this point of view needs further study. It is considered that the fault system in western Sichuan province depression has a strong influences on the accumulation of deep basin gas pools, and has led to a peculiar distribution pattern of deep basin gas in that basin.It terms of comprehensive study of the controlling factors in- cluding burial depth of source rocks, organic matter maturity, gas generation intensity, reservoir property, structural pattern, etc., a rough prospecting of deep basin gas distribution of western Sichuan province depression was made.

References:

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Last Update: 2004-06-20