Desorption Enhancement in Fracture-Stimulated Coalbed Methane Wells

Abstract

Desorption Enhancement in Fracture-Stimulated Coalbed Methane Wells Lyle V. Lehman; Lyle V. Lehman Halliburton Energy Services Inc. Search for other works by this author on: This Site Google Scholar Matthew E. Blauch; Matthew E. Blauch Halliburton Energy Services Inc. Search for other works by this author on: This Site Google Scholar Lavelle M. Robert Lavelle M. Robert Halliburton Energy Services Inc. Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Eastern Regional Meeting, Pittsburgh, Pennsylvania, November 1998. Paper Number: SPE-51063-MS https://doi.org/10.2118/51063-MS Published: November 09 1998 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Lehman, Lyle V., Blauch, Matthew E., and Lavelle M. Robert. "Desorption Enhancement in Fracture-Stimulated Coalbed Methane Wells." Paper presented at the SPE Eastern Regional Meeting, Pittsburgh, Pennsylvania, November 1998. doi: https://doi.org/10.2118/51063-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Eastern Regional Meeting Search Advanced Search AbstractThe dewatering process, which stimulates gas desorption, is essential for gas production in coalbed methane (CBM) reservoirs. Many CBM wells require hydraulic fracturing to provide interconnectivity and hydraulic access to the cleat/matrix system. Without hydraulic communication and access to the hierarchical flowpath, gas desorption is severely limited or nonexistent.When economics allow operators to continue long-term gas production, the gas rate of most coalbed wells will eventually increase. Overtime, gas desorbs from the coal macerals that form the cleat blocks. However, some coalbed fields experience premature or severe declines in production because of poor hydraulic-fracture conductivity. Particulates have been discovered as a primary cause of poor hydraulic-fracture conductivity. These particulates flow with produced water; they are then deposited within the proppant pack where they block pore throats and interfere with gas desorption.A surface modification agent (SMA) that prevents or reduces hydraulic-fracture conductivity damage has been developed and successfully field-tested. This agent, which has strong adhesive properties, helps delay or prevent conductivity damage to the proppant bed. This paper discusses (1) the problems associated with poor hydraulic-fracture conductivity, (2) why it occurs in coalbed wells, and (3) how a new SMA can minimize the problem.P. 153 Keywords: spe 51063, gas production, gas desorption, geochemical precipitate, coal bed methane, society of petroleum engineers, coal seam gas, fracturing materials, conductivity, surface modification agent Subjects: Hydraulic Fracturing, Unconventional and Complex Reservoirs, Fracturing materials (fluids, proppant), 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.