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2 472 941

(13)

(51)

IPC

E21F7/00(2006-01-01)

E21B43/26(2006-01-01)

(21) (22)

Application

2011131300/03, 2011-07-26

(24)

Start date

2011-07-26

(22)

Actual filing date

2011-07-26

(45)

Published

2013-01-20

(72)

Inventor

Klishin Vladimir IvanovichKokoulin Dan'Jar Ivanovich

(73)

Holder

Uchrezhdenie Rossijskoj Akademii Nauk Institut Gornogo Dela Sibirskogo Otdelenija RanUchrezhdenie Rossijskoj Akademii Nauk Institut Uglja Sibirskogo Otdelenija Ran

COAL BED HYDRAULIC FRACTURING METHOD Russian patent published in 2013 - IPC E21F7/00 E21B43/26

Abstract RU 2472941 C1

FIELD: mining.

SUBSTANCE: method involves drilling of through holes in coal massif from outpost workings parallel to working face; cutting of initiating slots on walls of the above holes, their sealing and formation of coal hydraulic fracturing cracks by supplying the fluid to them. Besides, cutting of the next initiating slot is performed simultaneously with sealing of the previous initiating slot and by formation in it of coal hydraulic fracturing crack. Cutting of initiating slots in each subsequent hole is performed with a shift of cutting pitch relative to initiating slots of each preceding hole.

EFFECT: enlarging the area of uncovering of fractured coal massif.

3 dwg

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RU 2 472 941 C1

Authors

Klishin Vladimir Ivanovich

Kokoulin Dan'Jar Ivanovich

Dates

2013-01-20—Published

2011-07-26—Filed