安岳—合川地区低阻气层形成机理研究

doi:10.3969/j.issn.1673-8926.2011.03.013

Lithologic Reservoirs ›› 2011, Vol. 23 ›› Issue (3): 70-74.doi: 10.3969/j.issn.1673-8926.2011.03.013

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Study on formation mechanism of low resistivity gas bearing reservoir in Anyue-Hechuan area

GENG Yanfei¹， ZHANG Chunsheng¹， HAN Xiaofeng²， YANG Dachao²

1. Key Laboratory of Exploration Technologies for Oil and Gas Resources， Ministry of Education， Yangtze University， Jingzhou 434023， China； 2. Logging Company， Huabei Petroleum Administration Bureau， Sinopec， Xinxiang 453700， China

Online:2011-06-20 Published:2011-06-20

Abstract

Abstract:

Reservoir in Anyue-Hechuan area is characterized by low porosity and low permeability. The complex micropore system and largr water film density lead to its high bound water saturation, which makes lots of highly mineralized formation brines formed particularly developed conductive network, forming the low resistivity characteristics. The reservoir lithology combining with physical property and water quality are applied to conduct the related calculation and experimental analysis, and explore the contributing factors of low resistivity gas bearing reservoir in Anyue-Hechuan area. The result shows that the factors of lowresistivity gas bearing reservoir in Anyue-Hechuan area include grain grade size, highly mineralized formation brines and high bound water saturation.

Key words: super heavyoil, reservoir characteristics, biodegradation, top water and edge water reservoir, Liaohe Oilfield

GENG Yanfei， ZHANG Chunsheng， HAN Xiaofeng， YANG Dachao. Study on formation mechanism of low resistivity gas bearing reservoir in Anyue-Hechuan area[J].Lithologic Reservoirs, 2011, 23(3): 70-74.

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