Economics of CO2 Sequestration in Coalbed Methane Reservoirs

Economics of CO2 Sequestration in Coalbed Methane Reservoirs S. Wong; S. Wong Alberta Research Council Search for other works by this author on: This Site Google Scholar W.D. Gunter; W.D. Gunter Alberta Research Council Search for other works by this author on: This Site Google Scholar M.J. Mavor M.J. Mavor Tesseract Corp. Search for other works by this author on: This Site Google Scholar Paper presented at the SPE/CERI Gas Technology Symposium, Calgary, Alberta, Canada, April 2000. Paper Number: SPE-59785-MS https://doi.org/10.2118/59785-MS Published: April 03 2000 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Wong, S., Gunter, W.D., and M.J. Mavor. "Economics of CO2 Sequestration in Coalbed Methane Reservoirs." Paper presented at the SPE/CERI Gas Technology Symposium, Calgary, Alberta, Canada, April 2000. doi: https://doi.org/10.2118/59785-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Unconventional Resources Conference / Gas Technology Symposium Search Advanced Search AbstractEnhanced Coalbed Methane Recovery (ECBM) is presently not commercial due to the high cost of compression and capture of the injection gas either carbon dioxide (CO2) or nitrogen (N2). Recently, the necessity to reduce greenhouse gas emissions has provided a dual role for coalbeds - as a source of natural gas and as a repository for CO2. The second role arises because of the storage mechanism for gas in coal. Unlike CO2-enhanced oil recovery processes, CO2 injected during ECBM recovery is strongly adsorbed onto the coal, and in a relatively homogeneous reservoir is not expected to break through to the production wells until the bulk of the coalbed methane (CBM) reservoir is swept of methane. This provides a huge CO2 storage potential in coalbeds throughout the world. However, based on current economic factors, it makes more sense to partially deplete the coal reservoir of methane before injecting CO2. The exact strategy depends on two economic factors, the costs and credits for sequestration of CO2 and the natural gas sales price. CO2 credits would have a major effect on the production strategy used for CBM, and would favor early use of ECBM. An example is used later in this paper to illustrate this point that takes into account the differences between "gross CO2" sequestered (CO2 captured), and "CO2 avoided" (net CO2 sequestered).IntroductionCO2 emission from burning fossil fuels has been identified as the major contributor to the increase in atmospheric CO2 levels that can potentially lead to global climate change. The challenge for the fossil fuel industry is to find cost-effective solutions that will reduce the release of CO2 into the atmosphere. Significant reduction of CO2 emissions on a global scale may be achieved by reduction of energy intensity, by reduction of carbon intensity, or by capture and storage of CO2. A portfolio of these methods is required to achieve the large reduction required, in which the utilization of carbon dioxide sinks will play an important role. Carbon dioxide sinks can be grouped into three broad classes based on the nature, location, and ultimate fate of CO2. Keywords: wong, mscf, power plant, coal bed methane, flue gas, injection, compression, emission, ecbm, upstream oil & gas Subjects: Improved and Enhanced Recovery, Unconventional and Complex Reservoirs, Coal seam gas This content is only available via PDF. 2000. Society of Petroleum Engineers You can access this article if you purchase or spend a download.