Enhancement of Coal Bed Degassing by Hydraulic Fracturing
M. V. KURLENY, S. V. SERDYUKOV, A. V. PATUTIN, T. V. SHILOVA
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: угольный пласт, метан, предварительная дегазация, дегазационная скважина, гидроразрыв, герметизация интервала разрыва, скважинная транспортная система, проппант низкой плотности, рабочая жидкость, coal bed, methane, pre-degassing, drainage hole, hydraulic fracturing, fracture interval geometrization, down-hole transport system, low-density proppant, hydraulic fluid
Abstract
The article addresses constraints of hydraulic fracturing application to enhancing preliminary degassing of coal beds. Decisions on geometrizing a hole interval by cemented mixture with cross fracture initiator are presented. An original conveying system for equipment in hole and a robotic hydrofracturing device for hard coal roof and floor are developed. The proposed hydraulic fracturing fluid with low-density proppant allows making fractures ensuring high-rate methane flow.
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