地质学报（英文版）2008，Vol.82Issue(3)：655-662,8.
Geological Characteristics of Oil and Gas Reservoirs in the Songpan-Aba Area, SW China
Geological Characteristics of Oil and Gas Reservoirs in the Songpan-Aba Area, SW China
摘要
Abstract
The Songpan-Aba area, similar to those basins on the Yangtze block, following the rifting and separation of the Yangtze block, gradually developed into a passive marginal basin on a passive continent margin in Early Paleozoic, and later, with the Qinling-Qilian oceanic crust subduction and ocean closure, the Caledonides were formed and the foreland basin was superimposed upon. Being influenced by the Paleo-Tethyan extension, intra-continental rifting-margin basins were formed in Late Paleozoie. Following the formation of peripheral orogenic belt, the Upper Triassic again superimposed the foreland basin. The Mesozoic and Cenozoic overprinted the faulted basin, forming the Qinghai-Tibet Plateau domes. Hydrocarbon source rock in the Early Paleozoic passive basin, the Upper Paleozoic platform carbonates and the Triassic mudstones comprise the main source-reservoircap combination. Each layer of this area is at the advanced stage of diagenetie evolution, being entered the middle and late diagenetic stages, and anadiagenetic stage. Besides the highly matured Triassic and Permian in Zoige and Hongyuan, almost all the area is at the early stage of over maturatation, generating much methane. This area has the potential for oil and gas.关键词
Songpan-Aba area, passive margin basin, foreland basin, oil and gas potentialKey words
Songpan-Aba area, passive margin basin, foreland basin, oil and gas potential分类
天文与地球科学引用本文复制引用
CAI Liguo,YE Deliao,LIU Guangxiang..Geological Characteristics of Oil and Gas Reservoirs in the Songpan-Aba Area, SW China[J].地质学报（英文版）,2008,82(3):655-662,8.基金项目
This study was financially supported by the National Major Fundamental Research and Development Project(No. 2005CB422100). （No. 2005CB422100）
