Enhanced oil recovery projects data base

Pautz, J.F.; Sellers, Connie; Nautiyal, C. M.; Allison, Edith

doi:10.2172/5383795

Cited by 3 publications

(2 citation statements)

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“…The cost of additional downhole equipment was added to the surfaceequipment cost. The surface costs were estimated from averaging costs for CO 2 tertiary oil-recovery projects in West Virginia (Pautz et al 1992). Those costs were escalated at 4% per annum to obtain 2005 costs.…”

Section: Economic Evaluationmentioning

confidence: 99%

Effects of Matrix Shrinkage and Swelling on the Economics of Enhanced-Coalbed-Methane Production and CO2 Sequestration in Coal

Gorucu

Jikich

Bromhal

et al. 2007

SPE Reservoir Evaluation &Amp; Engineering

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Increases in carbon dioxide (CO 2) levels in the atmosphere and their contributions to global climate change are a major concern. CO 2 sequestration in unmineable coals may be a very attractive option, for economic as well as environmental reasons, if a combination of enhanced-coalbed-methane (ECBM) production and tax incentives becomes sufficiently favorable compared to the costs of capture, transport, and injection of CO 2. Darcy flow through cleats is an important transport mechanism in coal. Cleat compression and permeability changes caused by gas sorption/desorption, changes of effective stress, and matrix swelling and shrinkage introduce a high level of complexity into the feasibility of a coal sequestration project. The economic effects of CO 2-induced swelling on permeabilities and injectivities has received little (if any) detailed attention. CO 2 and methane (CH 4) have different swelling effects on coal. In this work, the Palmer-Mansoori model for coal shrinkage and permeability increases during primary methane production was rewritten to also account for coal swelling caused by CO 2 sorption. The generalized model was added to a compositional, dualporosity coalbed-methane reservoir simulator for primary (CBM) and ECBM production. A standard five-spot of vertical wells and representative coal properties for Appalachian coals was used (Rogers 1994). Simulations and sensitivity analyses were performed with the modified simulator for nine different parameters, including coal seam and operational parameters and economic criteria. The coal properties and operating parameters that were varied included Young's modulus, Poisson's ratio, cleat porosity, and injection pressure. The economic variables included CH 4 price, CO 2 cost, CO 2 credit, water disposal cost, and interest rate. Net-present-value (NPV) analyses of the simulation results included profits resulting from CH 4 production and potential incentives for sequestered CO 2. This work shows that for some coal seams, the combination of compressibility, cleat porosity, and shrinkage/swelling of the coal may have a significant impact on project economics.

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Section: Economic Evaluationmentioning

confidence: 99%

Effects of Matrix Shrinkage and Swelling on the Economics of Enhanced-Coalbed-Methane Production and CO2 Sequestration in Coal

Gorucu

Jikich

Bromhal

et al. 2007

SPE Reservoir Evaluation &Amp; Engineering

View full text Add to dashboard Cite

show abstract

“…Surfactant/alkali processes were widely applied between 1970 and 1984. A total of 101 projects were started during this period (Pautz et. al, 1992), that included both DOE cost-shared and industry funded projects.…”

Section: Introductionmentioning

confidence: 99%