eprintid: 2895
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/28/95
datestamp: 2023-11-09 15:51:09
lastmod: 2023-11-09 15:51:09
status_changed: 2023-11-09 15:44:30
type: article
metadata_visibility: show
creators_name: Irawan, S.
creators_name: Nair, P.
creators_name: Tunio, S.Q.
title: Forecasting CBM production of mukah balingian Coalfield, Sarawak, Malaysia
ispublished: pub
keywords: Coal fields; Coal-bed gas; Coalbed methanes; Coalbeds; Field data; Field performance; Flowing pressures; Gas content; Initial pressure; Langmuir pressure; Langmuir volume; Malaysia; Microsoft excel; Original gas in places; Production rates; Recovery factors; Relative permeability; Sarawak; Solid matrixes; Specific time; Visual basic for applications, Coal deposits; Flowing wells; Forecasting; Gas permeability; Gases; Methane, Abandoned wells
note: cited By 1
abstract: Coal-Bed Methane (CBM) or coal-bed gas is a form of natural gas extracted from coal beds. The term refers to methane adsorbed into the solid matrix of the coal. In order to understand the performance of a CBM reservoir, we need to know the Original Gas in Place, Production Rates and also Recovery Factor. This is mainly on creating a Microsoft Excel ® 2007 with the help of Visual Basic for Application (VBA) based CBM forecast tool. Field data from Mukah-Balingian Coalfield Sarawak is analyzed and forecasted. Original Gas in Place is calculated by multiplying the mass of the coal with the initial gas content of the coal bed. Following from the generated Relative Permeability data, production rates for both water and gas calculated over a specific time range. During the whole production, an abandonment condition which is mainly the pressure will be set by the engineers. Using this abandonment pressure, we can calculate the recovery factor. Using constant values of Langmuir Volume of 714.29 scf/ton, Langmuir Pressure of 1024.5 psia and reference initial pressure of 2000 psia; flowing pressure of 100 psia which is also the abandonment pressure, various range of skin, permeability, initial gas content as well as porosity tested to predict the field performance. Using the range of initial gas content of 86.286-173.36 scf/ton; range of permeability of 1.01e-6 mD to 1010 mD; porosity, with a range of 0.0001 to 0.5; Skin ranged from-5 to 4, CBM production is forecasted for the range of 5 years. © Maxwell Scientific Organization, 2012.
date: 2012
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866049080&partnerID=40&md5=37ffbe79cb75781da9750f7c28696ef6
full_text_status: none
publication: Research Journal of Applied Sciences, Engineering and Technology
volume: 4
number: 21
pagerange: 4265-4274
refereed: TRUE
issn: 20407459
citation:   Irawan, S. and Nair, P. and Tunio, S.Q.  (2012) Forecasting CBM production of mukah balingian Coalfield, Sarawak, Malaysia.  Research Journal of Applied Sciences, Engineering and Technology, 4 (21).  pp. 4265-4274.  ISSN 20407459