川东北开江-梁平陆棚两侧飞仙关组储层特征

doi:10.11743/ogg20120510

Abstract

Abstract:

Kaijiang-Liangping continental shelf in northeastern Sichuan Basin is an important area for petroleum exploration in China.Reservoir distribution is very complicated and the reservoir quality is greatly variable.Based on the previous research,this paper described the reservoir characteristics of the Ferxianguan Formation by using high-resolution sequence stratigraphy and integrating various data such as seismic,logging,lithofacies,outcrop and thin section data.On the basis of high-frequency sequence stratigraphy division and correlation of single well,a high resolution sequence framework was established with system tract as the unit.The development features and factors controlling bank facies reservoirs rocks were analyzed within the framework.Taking Puguang and Yuanba blocks as the case study,we established the fine structure pattern for reservoirs in the Feixianguan Formation.The reservoirs in the Puguang gas field are thick in vertical and continuous in lateral,and have good porosity and permeability.In contrast,the reservoirs in the Yuanba gas field are thin in vertical,commonly occur at the upper or top of the high-frequency sequences,and have poor porosity and permeability as a whole.The further study of reservoir development and distribution within the high-resolution stratigraphic framework is of great significance to the exploration and development in the Feixianguan Formation.

Key words: reservoir, sequence stratigraphy, Feixianguan Formation, Kaijiang-Liangping continental shelf, northeastern Sichuan

CLC Number:

TE112.3

Yang Yingying, Li Guorong, Deng Yong. Reservoir characteristics of the Feixianguan Formation in Kaijiang-Liangping continental shelf flanks,northeastern Sichuan Basin[J]. Oil & Gas Geology, 2012, 33(5): 736-742.

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Reservoir characteristics of the Feixianguan Formation in Kaijiang-Liangping continental shelf flanks,northeastern Sichuan Basin

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