Method of completing production wells for the recovery of gas from coal seams
Patent
·
OSTI ID:6207839
A method is described of completing production wells for the recovery of gas from a coal seam and having a casing cemented in the well, comprising the steps of: (a) providing perforations in the casing opposite earth formations located above and/or below the coal seam; and (b) hydraulically fracturing the coal seam through the perforations in the casing, the fracturing of the coal seam propagating initially through the earth formations located above/or below the coal seam and providing a filter for the coal fines to prevent their migration toward the perforations and plugging or impairment of the perforations during withdrawal of gas from the coal seam through the perforations.
- Assignee:
- Canadian Hunter Exploration Ltd., Calgary
- Patent Number(s):
- US 4679630
- OSTI ID:
- 6207839
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
012033 -- Coal
Lignite
& Peat-- Underground Mining-- Mine Environment-- (1987-)
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALKANES
CEMENTING
COAL DEPOSITS
COAL FINES
COAL SEAMS
COMMINUTION
CRACK PROPAGATION
DEGASSING
FAILURES
FILTRATION
FRACTURES
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURES
HYDRAULIC FRACTURING
HYDROCARBONS
METHANE
MINERAL RESOURCES
NATURAL GAS WELLS
ORGANIC COMPOUNDS
PERFORATION
RESOURCES
SEPARATION PROCESSES
WELL CASINGS
WELL COMPLETION
WELLS
012033 -- Coal
Lignite
& Peat-- Underground Mining-- Mine Environment-- (1987-)
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALKANES
CEMENTING
COAL DEPOSITS
COAL FINES
COAL SEAMS
COMMINUTION
CRACK PROPAGATION
DEGASSING
FAILURES
FILTRATION
FRACTURES
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURES
HYDRAULIC FRACTURING
HYDROCARBONS
METHANE
MINERAL RESOURCES
NATURAL GAS WELLS
ORGANIC COMPOUNDS
PERFORATION
RESOURCES
SEPARATION PROCESSES
WELL CASINGS
WELL COMPLETION
WELLS