Best drilling, completion and stimulation methods for CBM reservoirs

Before selecting a completion method for a coalbed methane (CBM) well, nine factors should be considered: investment required; number of coal seams encountered by the borehole; expected production rate; reserves in the various coal intervals; coal-seam permeability and gas content; type of stimulati...

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Veröffentlicht in:	World Oil 2008-10, Vol.229 (10)
Hauptverfasser:	RAMASWAMY, Sunil, AYERS, Walter B, HOLDITCH, Stephen A
Format:	Magazinearticle
Sprache:	eng
Schlagworte:	Analysis Applied sciences Basins Best practice Boreholes Coal Coalbed methane Completion equipments and methods. Casing. Cementing. Tests and measurements in wells Crude oil, natural gas and petroleum products Drilling Drilling methods and equipments. Rocks mechanics. Directional and horizontal drilling Drilling. Casing. Preparing wells for production Energy Exact sciences and technology Fuels Geology Influence Literature reviews Methods Natural gas industry Natural history Permeability Petroleum Prospecting and production of crude oil, natural gas, oil shales and tar sands Questionnaires Reservoirs Surveys
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Beschreibung
Zusammenfassung:	Before selecting a completion method for a coalbed methane (CBM) well, nine factors should be considered: investment required; number of coal seams encountered by the borehole; expected production rate; reserves in the various coal intervals; coal-seam permeability and gas content; type of stimulation treatment expected, if any; wellbore stability problems; future workover requirements; and artificial lift requirements, if any. To establish a set of best practices for CBM production, relationships among the selection of drilling, completion and stimulation methods and geological characteristics of coalbeds were clarified.
ISSN:	0043-8790 2831-6304