Development and evaluation of near-mine stimulation techniques for coalbed degasification. Open file report 29 September 1980-1 March 1984

Technical Report · Tue May 01 04:00:00 EDT 1984

OSTI ID:6376749

Murrie, G W; Popp, J T; McCulloch, C M; Steele, D J

The purpose of this project was to determine the effects of foam stimulation treatments upon mining conditions in underground coal mines. Underground investigations were conducted to characterize the geological and mining conditions both before and after the holes were stimulated. Of 12 holes that were drilled at mine sites in Kentucky, Pennsylvania, Utah, and West Virginia, 4 were mined through and mining progressed within 75 ft of a fifth before mining plans were altered because of unassociated reasons. The fracture fluids were tagged with fluorescing paint pigments to enable their underground pathways to be detected with an ultraviolet light and accurately mapped. At the holes that were intercepted by mining, the induced fractures were all contained within the coal seams. Horizontal fracturing at the seam-roof interface and along an in-seam binder was more extensive than vertical fracturing, which was confined primarily to the more friable portion of the seam.

• Research Organization: Dames and Moore, Cincinnati, OH (USA)
• OSTI ID: 6376749
• Report Number(s): PB-84-220664
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
BOREHOLES
CARBONACEOUS MATERIALS
CAVITIES
COAL
COAL DEPOSITS
COAL MINING
COAL SEAMS
COMMINUTION
DEGASSING
DRILLING
DYES
ENERGY SOURCES
FAILURES
FLUORESCENCE
FOSSIL FUELS
FRACTURES
FRACTURING
FUELS
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
LUMINESCENCE
MAPPING
MATERIALS
MECHANICS
MINERAL RESOURCES
MINING
RESOURCES
ROCK MECHANICS
STIMULATION
UNDERGROUND MINING
WELL STIMULATION