Progress and Prospect of Researches on Drilling Fluid Technology for Deep CBM Drilling

LU Hongjun; SUN Jinsheng; OUYANG Yong; SI Daichun; ZHOU Yu; LONG Yifu; WANG Ren; LI Long

doi:10.12358/j.issn.1001-5620.2026.03.002

Volume 43 Issue 3

Jun. 2026

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Article Navigation > DRILLING FLUID & COMPLETION FLUID > 2026 > 43(3): 301-309

LU Hongjun, SUN Jinsheng, OUYANG Yong, et al.Progress and prospect of researches on drilling fluid technology for deep cbm drilling[J]. Drilling Fluid & Completion Fluid，2026, 43（3）：301-309 doi: 10.12358/j.issn.1001-5620.2026.03.002

Citation:

LU Hongjun, SUN Jinsheng, OUYANG Yong, et al.Progress and prospect of researches on drilling fluid technology for deep cbm drilling[J]. Drilling Fluid & Completion Fluid，2026, 43（3）：301-309 doi: 10.12358/j.issn.1001-5620.2026.03.002

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Progress and Prospect of Researches on Drilling Fluid Technology for Deep CBM Drilling

doi: 10.12358/j.issn.1001-5620.2026.03.002

LU Hongjun^{1, 2
,},
SUN Jinsheng³,
OUYANG Yong^{1, 2},
SI Daichun^{1, 2},
ZHOU Yu^{1, 2},
LONG Yifu³,
WANG Ren³,
LI Long^{3
,
,}

1.
National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xi'an, Shannxi 710018
2.
Oil and Gas Technology Research Insiute, PetroChina Changqing Oilfeld Company, Xi'an, Shaanxi 710018
3.
CNPC Engineering Technology R & D Company Limited, Beijing 102206

Received Date: 2025-12-15
Accepted Date: 2026-02-01
Rev Recd Date: 2026-01-21

Available Online: 2026-06-12

Publish Date: 2026-06-12

Abstract

Abstract

Deep coalbed methane (CBM) has become an important part of unconventional natural gas resource development. CBM reservoirs are characteristic of strong heterogeneity, developed cleavage and microfractures, and low mechanical strength etc., which always result in problems such as borehole wall instability, difficulties in cuttings carrying and drilling fluid degassing, and serious reservoir damage etc. Key additives and high-performance drilling fluids for deep CBM development are in urgent need to ensure drilling with safety, high operational quality and high efficiency. This paper summarizes the progress made in recent years in the research of drilling fluid additives and systems for deep CBM development. Based on the effectiveness of the drilling fluid systems, the technical features of these drilling fluids are sorted and analyzed, the direction of future development of CBM drilling fluids is forecast, and these are of great importance to the high-quality high-efficiency deep CBM development, the high efficiency exploration and development of unconventional resources, and to the guarantee of national energy safety.
- Deep coalbed methane,
- Drilling fluid technology,
- Borehole wall stabilization,
- Development prospect

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References

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Progress and Prospect of Researches on Drilling Fluid Technology for Deep CBM Drilling

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