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U.S. Department of Energy
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Coalbed methane stimulation techniques: Mechanisms and applicability. Topical report, August 1991-July 1993

Technical Report ·
OSTI ID:80558
Increased pore pressure around a wellbore during injection into a coalbed reservoir can cause increased stresses, degradation in mechanical properties and plastic deformation. These near-wellbore effects can lead to elevated breakdown and treatment pressures during hydraulic fracturing and alternatively can promote cavity evolution and conductivity-connectivity alteration during dynamic openhole cavitation. Laboratory experimentation and field data interpretation are provided to support these contentions. Practical considerations for controlling excessive pressure during hydraulic fracturing are suggested as are similar considerations for maximizing cavity growth, deliverability, applicability, and formation evaluation.
Research Organization:
Terra Tek, Inc., Salt Lake City, UT (United States)
OSTI ID:
80558
Report Number(s):
PB--95-221255/XAB; CNN: Contract GRI-5091-214-2220
Country of Publication:
United States
Language:
English

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