A Generalized Material Balance Equation for Coal Seam Gas Reservoirs G. Penuela; G. Penuela U. Industrial de Santander Search for other works by this author on: This Site Google Scholar A. Ordonez; A. Ordonez U. Industrial de Santander Search for other works by this author on: This Site Google Scholar A. Bejarano A. Bejarano Instituto Colombiano del Petroleo - ECOPETROL Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, September 1998. Paper Number: SPE-49225-MS https://doi.org/10.2118/49225-MS Published: September 27 1998 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Penuela, G., Ordonez, A., and A. Bejarano. "A Generalized Material Balance Equation for Coal Seam Gas Reservoirs." Paper presented at the SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, September 1998. doi: https://doi.org/10.2118/49225-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Annual Technical Conference and Exhibition Search Advanced Search AbstractDuring the last few years, research has been done on generalized material balance equations for conventional oil and gas reservoirs in order to improve the reservoir performance analysis. However, those equations are inappropriate for coal seam gas (CSG) reservoirs. To address this limitation, a generalized material balance equation (GMBE) for CSG reservoirs was developed. This work is based on a mathematical development and the straight-line method, published previously and widespread used for conventional reservoirs.Three validation examples of the proposed equation were designed. They show the new equation has the following advantages:it is applicable to CSG reservoirs in saturated, equilibrium, and undersaturated conditions,it is applicable to any type of coalbed without restriction on especial diffusion constant values,existent equations are particular cases of the generalized equation evaluated under certain restrictions, andits reorganization is analogous to the popular straight- line method for conventional reservoirs.P. 621 Keywords: assumption, coal bed methane, gas reservoir, reservoir, compressibility, coal seam gas, straight line, generalized material balance equation, straight-line method, gmbe Subjects: Unconventional and Complex Reservoirs, Coal seam gas This content is only available via PDF. 1998. Society of Petroleum Engineers You can access this article if you purchase or spend a download.