Fracture stimulation of coal degasification wells

Details Fracture stimulation of coal degasification wells Fracture stimulation of coal degasification wells

E - Fixed Constructions

21

B

166/22

E21B 43/00 (2006.01) E21B 43/267 (2006.01)

Patent

CA 1319603

ABSTRACT OF THE DISCLOSURE This invention pertains to a novel method of fracturing subterranean coal formations as a means for stimulating the production of coalbed methane. A highly conductive proppant pack is emplaced in the fracture during the fracturing treatment that has a particle size gradient ranging from about 40/70 mesh at the leading tip of the fracture to about 12/20 mesh at the trailing base of the fracture. The frac- turing process is conventional in the sense that the materials and equipment used in the process are well known. The manner in which such materials and equip- ment are used to fracture coal degasification wells is new. FEH:lc/go 89236ART0155

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