Geological Characteristics of Low-Yield and Low-Efficiency CBM Wells and Practical Measures for Production Increase in the Qinshui Basin
Zhou Zhang, Junshan Ren, Yang Zhao, Meizhu Wang, Jiaosheng Yang, Cong Zhang · 2023
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Description
Zhou Zhang and five co-authors diagnose in 2023 why so many coalbed methane wells in China's Qinshui Basin underproduce. The basin's blocks hold many low-yield wells that drag the industry's growth. Field research pinned the causes: shattered coal structure, vertical wells that fit the geology poorly, wide spacing, and stimulation that mismatches the seam.
Each geology gets its remedy. Intact but tight seams take L-shaped horizontal wells with staged fracturing. Stressed zones gain from repeat fracturing after a draining period. Broken coal is reached by fracturing through the roof rock, and natural fracture zones by fracture turning. Basin trials of each fix raised output.
Catalog record
| CREATOR | Zhou Zhang, Junshan Ren, Yang Zhao, Meizhu Wang, Jiaosheng Yang, Cong Zhang |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 49 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |