Pretreatment for fracturing coal seams
Patent
·
OSTI ID:6107515
A pretreatment for use in fracturing coal seams to increase gas permeability of the seams. The pretreatment involves injecting a material capable of swelling coal into a coal seam prior to fracturing the coal seam. The pretreatment material swells the coal and closes the natural cleats therein, enhancing the effectiveness of the subsequent fracturing step.
- Assignee:
- Conoco Inc
- Patent Number(s):
- US 4283089
- OSTI ID:
- 6107515
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
ALKANES
AMMONIA
COAL DEPOSITS
COAL SEAMS
COMMINUTION
CRACKS
DEGASSING
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
HYDRIDES
HYDROCARBONS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INJECTION
INORGANIC ACIDS
INTAKE
METHANE
MINERAL RESOURCES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
RESOURCES
SWELLING
012000* -- Coal
Lignite
& Peat-- Mining
ALKANES
AMMONIA
COAL DEPOSITS
COAL SEAMS
COMMINUTION
CRACKS
DEGASSING
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
HYDRIDES
HYDROCARBONS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INJECTION
INORGANIC ACIDS
INTAKE
METHANE
MINERAL RESOURCES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
RESOURCES
SWELLING