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AAPG Bulletin, Preliminary version published online Ahead of Print 1 April 2024.

Copyright © 2024. The American Association of Petroleum Geologists. All rights reserved.

DOI:10.1306/03202422056

Present-day stress Previous HitregimeNext Hit, permeability, and fracture stimulations of coal reservoirs in the Qinshui Basin, North China

Shida Chen123 , Yafei Zhang4 , Dazhen Tang12 , Shu Tao12 , Yifan Pu12 , and Zhenhong Chen5

1 School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, PR China
2 Coal Reservoir Laboratory of National Engineering Research Center of CBM Development & Utilization, Beijing 100083, PR China
3 Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, PR China
4 China United Coalbed Methane Corporation Ltd., Beijing, 100016, PR China
5 PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, PR China

Ahead of Print Abstract

Present-day stress, permeability, and hydraulic fracturing of coals at 323–1454 m (1060 ft–4770 ft) depths were studied from the Qinshui Basin to analyze the influence of variable present-day stress regimes on coalbed methane productivity. The present maximum horizontal stress orientation is primarily northeast-southwest, with some local variations. Stress magnitudes generally increase with depth but with U-shaped variations in stress gradients. A strike-slip Previous HitfaultNext Hit stress Previous HitregimeNext Hit is dominant and is consecutively distributed vertically, while normal and reverse Previous HitfaultNext Hit stress regimes mainly distributed in specific depth intervals. Permeability (0.004-13.18 mD) and stress Previous HitregimeNext Hit present high variability with changes in structural trends, structural lows result in a strike-slip Previous HitfaultNext Hit stress Previous HitregimeNext Hit and extremely low permeability (

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Please cite this AAPG Bulletin Ahead of Print article as:

Shida Chen , Yafei Zhang , Dazhen Tang , Shu Tao , Yifan Pu , Zhenhong Chen: Present-day stress Previous HitregimeTop, permeability, and fracture stimulations of coal reservoirs in the Qinshui Basin, North China, (in press; preliminary version published online Ahead of Print 01 April 2024: AAPG Bulletin, DOI:10.1306/03202422056.

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