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1. (WO2018102882) METHOD FOR DEWATERING AND OPERATING COAL SEAM GAS WELLS

Pub. No.:    WO/2018/102882    International Application No.:    PCT/AU2017/051355
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 09 00:59:59 CET 2017
IPC: E21B 43/25
E21B 43/12
E21B 43/16
E21B 43/38
E21B 43/00
C09K 8/594
C09K 8/94
Applicants: THE UNIVERSITY OF QUEENSLAND
Inventors: RUDOLPH, Victor
FURZI, Mashid
GREENWAY, Brent
Title: METHOD FOR DEWATERING AND OPERATING COAL SEAM GAS WELLS
Abstract:
A method for removing water from a coal seam gas well, the coal seam gas well including an outer casing into which coal seam gas and water flow near the lower region of the coal seam gas well, the method comprising delivering pressurized methane into a lower region of the coal seam gas well, the pressurized methane acting to lift water from the lower region of the coal seam gas well, and cause it to flow upwards towards the surface. The invention also provides a system for removing water from a coal seam gas well. The method may be retro-fitted to existing CSG wells.