Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline

新疆石油地质 ›› 2019, Vol. 40 ›› Issue (zk(English) ): 328-333.

Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline

GE Yanyan¹, LI Xin¹, GAO Lin², JIAO Chunlin³, WANG Haichao¹, FENG Shuo¹

1.Xinjiang University, a.School of Geology and Mining Engineering; b.CBM Engineering Technology Research Center, Urumqi, Xinjiang 830046, China;
2.Xinjiang Kelinside New Energy Co. Ltd., Urumqi 830046, China;
3.No.9 Team of Geological Agency, Xinjiang Bureau of Geology and Mineral Exploration and Development, Urumqi, Xinjiang 830000, China

收稿日期:2018-07-09 修回日期:2018-11-22 出版日期:2020-01-01 发布日期:2021-05-18

Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline

GE Yanyan¹, LI Xin¹, GAO Lin², JIAO Chunlin³, WANG Haichao¹, FENG Shuo¹

1.Xinjiang University, a.School of Geology and Mining Engineering; b.CBM Engineering Technology Research Center, Urumqi, Xinjiang 830046, China;
2.Xinjiang Kelinside New Energy Co. Ltd., Urumqi 830046, China;
3.No.9 Team of Geological Agency, Xinjiang Bureau of Geology and Mineral Exploration and Development, Urumqi, Xinjiang 830000, China

Received:2018-07-09 Revised:2018-11-22 Online:2020-01-01 Published:2021-05-18
About author:GE Yanyan, E-mail: gyyxjdxgbc@163.com

摘要/Abstract

摘要： Based on the geological units divided by pervious researchers for coalbed methane development and combined with logging and production data obtained from coalbed methane wells, the paper studies the geological characteristics of high-yield coalbed methane wells in Fukang syncline. The results show that in the fourteen geological units divided in Fukang syncline, the fissure water between coal beds in the stagnant area mainly come from pore phreatic water in loose rock mass and the lateral supply of the aquifer in the same zone, coalbed methane may easily accumulate under the action of hydraulic sealing and plugging and the production in the stagnant area is higher than that in the runoff area; due to the influence of burial depth on reservoir vertical stress, the stagnant area with medium burial depth has relatively good permeability, whose production is higher than that of the deep-burial stagnant area; the dual lateral resistivity logs are used to judge the development degree of cracks in the coal beds, the reservoir with slight deformation in deep strata has good permeability, whose production is higher than that with serious deformation. It is considered that the combined development of coal-series conventional natural gas is helpful for the high yield of coalbed methane wells.

关键词: southern margin of Junggar basin, Fukang syncline, CBM, high-yield well, key factor, geological factor

Abstract: Based on the geological units divided by pervious researchers for coalbed methane development and combined with logging and production data obtained from coalbed methane wells, the paper studies the geological characteristics of high-yield coalbed methane wells in Fukang syncline. The results show that in the fourteen geological units divided in Fukang syncline, the fissure water between coal beds in the stagnant area mainly come from pore phreatic water in loose rock mass and the lateral supply of the aquifer in the same zone, coalbed methane may easily accumulate under the action of hydraulic sealing and plugging and the production in the stagnant area is higher than that in the runoff area; due to the influence of burial depth on reservoir vertical stress, the stagnant area with medium burial depth has relatively good permeability, whose production is higher than that of the deep-burial stagnant area; the dual lateral resistivity logs are used to judge the development degree of cracks in the coal beds, the reservoir with slight deformation in deep strata has good permeability, whose production is higher than that with serious deformation. It is considered that the combined development of coal-series conventional natural gas is helpful for the high yield of coalbed methane wells.

Key words: southern margin of Junggar basin, Fukang syncline, CBM, high-yield well, key factor, geological factor

GE Yanyan, LI Xin, GAO Lin, JIAO Chunlin, WANG Haichao, FENG Shuo. Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline[J]. 新疆石油地质, 2019, 40(zk(English) ): 328-333.

GE Yanyan, LI Xin, GAO Lin, JIAO Chunlin, WANG Haichao, FENG Shuo. Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline[J]. Xinjiang Petroleum Geology, 2019, 40(zk(English) ): 328-333.

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Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline

Key Geological Factors of High-Yield Coalbed Methane Development in Fukang Syncline

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