Analysis on Exploration and Development Prospects of Coalbed Methane in the Area of Xuyong and Gulin County
Author of the article:Ke Jun 1,2, Yin Zhongshan 2,3 , Zhao Wenfeng2,3 ,Yin Xuesong 4
Author's Workplace:1. Sichuan Coalfield Geological Bureau 135th Team, Luzhou, Sichuan, 646000, China 2 . The Engineering Research Center of Sichuan for Coal Mine Methane (CBM), Chengdu, Sichuan,610072, China 3 .Sichuan Coalfield Geological Bureau, Chengdu,Sichuan, 610072, China 4 .Wuhan University of Technology. Institute of Automation, Wuhan, Hubei, 430070, China
Key Words:The area of Xuyong and Gulin; Longtan formation; Structural coal; Gas of coal measures; Desorption efficiency; Deep coalbed methane exploration
Abstract:
In order to
realize the development and utilization of coalbed methane(CBM)resources in Sichuan Province, especially
in the area of Gulin and Xuyong , it is of great significance to intensify the
exploration and development of oil and gas resources, improve the guarantee
level of domestic oil and gas resources, and accelerate the construction
process of a clean energy demonstration province in Sichuan Province. On the basis of
summarizing the achievements of CBM resource
exploration research, CBM parameter well construction and surface extraction
well gas test project in the area of Gulin and Xuyong since 2002, it is clarified that thestructural coal controlled by the slip
structure is the main factor restricting the commercial development of CBM in
this area. The principle and method of improving CBM well yield are analyzed
from the perspective of parameters such as desorption efficiency of coal
reservoir, etc. It is believed that the temporary storage pressure difference,
temporary waste pressure difference, effective desorption amount and desorption
efficiency jointly control the gas production potential of CBM wells. The coal
seam (system) gas resources in the study area are enriched and have good
development prospects. It is suggested to speed up large-scale development,
carry out research on suitable structural coal reservoir reconstruction
methods, strengthen deep coalbed methane(DCBM)exploration, expand favorable areas for
coalbed (system) gas work, and realize the goal of comprehensive exploration, development
and utilization of coalbed methane resources in Sichuan Province.