Download or read book A Two dimensional Two phase Simulation Model for Coalbed Methane Recovery written by Jyun-Cheng Chen and published by . This book was released on 1987 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Coalbed Methane Production Potential Through Reservoir Simulation written by Mayank Srivastava and published by . This book was released on 2005 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a reservoir simulation analysis of coalbed methane (CBM) production potential of the Illinois Coal Basin. COMET3, a three-dimensional, three phase, finite-difference simulator capable of modeling single, dual and triple porosity models, was used for simulation analyses. The simulation results provide preliminary estimates of CBM production potential of the region. The results of simulation analyses show that primary CBM recovery potential of the basin is approximately 24% of initial gas-in-place (IGIP), emphasizing the need of enhanced recovery techniques for improving production. Therefore, different enhanced recovery techniques, such as gas injection, horizontal drilling, multi-seam production, and hydraulic fracturing of coal seams, were studied. Gas injection was investigated for three types of gases, namely CO 2 , N 2 and flue gas. The results of the gas injection study indicated an improvement in CBM recovery, with more than 75% of IGIP being recovered in all three cases. The CO 2 injection option resulted in the highest simulated CBM recovery, followed by flue gas and N 2 injection, respectively. It was also found that N 2 breakthrough occurs much earlier than CO 2 , which is indicative of the CO 2 sequestration potential in the basin.

Download or read book Two phase Flow in Coalbeds written by Fred N. Kissell and published by . This book was released on 1975 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Oata Analysis and Synthesis (CINOAS) * at Purdue. University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 33 (thesis year 1988) a total of 13,273 theses titles from 23 Canadian and 1 85 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 33 reports theses submitted in 1988, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.

Download or read book A Fully Coupled Finite Element Model of Coal Deformation and Two Phase Flow for Coalbed Methane Extraction written by Dong Chen and published by . This book was released on 2012 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reservoir simulation model is usually required to represent the combined effects of gas transport, water flow, and coal swelling/shrinking on the extraction of coalbed methane (CBM). Although a number of models have been developed in recent years, most of them are based on coal permeability models under the assumptions of uniaxial strain and constant overburden load. Under these assumptions, coal permeability is defined as a function of pore pressure only. This allows the gas transport and water flow to be decoupled from coal deformation. In this study, these two assumptions are relaxed: a general porosity and effective permeability model is developed to represent the behavior of both the primary medium (coal matrix) and the secondary medium (fractures) under conditions of variable stress. The effective permeability model is defined as a function of effective stress, and can be applied to the full spectrum of mechanical conditions spanning prescribed in-situ stresses through constrained displacement. Moreover the effect of matrix moisture is often ignored in previous simulation studies, but some experimental results showed that the presence of moisture in the coal matrix had profound influences on the gas storage and transport in coal seams by reducing the gas adsorption capacity of the coal, decreasing the gas effective diffusivity through the coal matrix, and varying the coal swelling strain. In order to investigate the magnitude and interplay the moisture effects on CBM production, approximate relationships have been built to quantify the moisture effect on the gas adsorption capacity, the gas effective diffusivity and the coal swelling strain. These relationships have been calibrated by comparison with a selection of literature data. Both the permeability model and the moisture effect correlations are implemented into a fully coupled model of coal deformation, gas transport in the matrix system, and gas-water flow in the fracture system. The FE model has been verified through the history matching of the gas and water production profiles in the Powder River Basin. The verified FE model is applied to conduct a series of parametric studies. These parametric studies illustrate important non-linear responses due to the effective stress that cannot be recovered where mechanical influences are not rigorously coupled with the two-phase flow system.

Download or read book Coalbed Methane Study Single Porosity 3 dimension and 2 phase Simulation Model for Coalbed Methane written by Badrul Mohamed and published by . This book was released on 1997 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Coalbed Methane Symposium written by and published by . This book was released on 1987 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal Bed Methane written by Pramod Thakur and published by Elsevier. This book was released on 2020-04-06 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal Bed Methane: Theories and Applications, Second Edition, captures the full lifecycle of a coal bed methane well and offers petroleum geologists and engineers a single source for a broad range of coal bed methane (CBM) applications. The vast coal resources in the United States continue to produce tremendous amounts of natural gas, contributing to a diverse range of energy assets. This book addresses crucial technical topics, including exploration and evaluation of coal bed reservoirs, hydraulic fracturing of CBM wells, coal seam degasification, and production engineering and processing, among others. The book also covers legal issues and permitting, along with an economic analysis of CBM projects. This new edition includes information on new and established research and applications, making it relevant for field geologists and engineers, as well as students. Edited by a team of coal bed methane experts from industry, academia and government with more than 100 years of combined experience in the field Contains more than 150 figures, photographs and illustrations to aid in the understanding of fundamental concepts Presents the full scope of improvements in U.S. energy independence, coal mine safety and greenhouse gas emissions

Download or read book Advances in reservoir modeling and simulation written by Jinze Xu and published by Frontiers Media SA. This book was released on 2023-03-24 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SPE Formation Evaluation written by and published by . This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the Society of Petroleum Engineers written by and published by . This book was released on 1993 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of Society for Mining Metallurgy and Exploration Inc written by and published by . This book was released on 1995 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methane Modeling written by Fred C. Schwerer and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-dimensional, numerical, mathematical model has been developed to predict methane influx into coal mines under a variety of mining conditions. A set of time-dependent, partial differential equations for two-phase Darcy flow in a porous medium was developed. The equations comprehend various microscopic flow phenomena and time- and pressure-dependent adsorption and desorption of methane. One- dimensional models were expanded to two-dimensional models by appropriate geometric modification of the basic equation set. Numerical solutions were obtained with an implicit method-of-lines technique. Boundary conditions corresponding to the appropriate mining system can be selected. The model and solution procedure are coded in a structured dialect of Fortran, and a preprocessor is included for adaptation to popular computer systems. To obtain data for comparison with the model, methane measurements were made in three coal mines in the eastern United States to encompass a range of gas contents, porosities, permeabilities, coal rank, and mining methods. Results of the simulation of methane emission during advance of the mining face following idle periods were in general agreement with observed values. v. 1. contains the final report and summary, methane measurement data, mathematical components, and simulation demonstrations. v. 2. contains a guide to the computer program, flowcharts, and source codes.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1982 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Sensitivity Analysis of Modeling Parameters that Affect the Dual Peaking Behaviour in Coalbed Methane Reservoirs written by Amarachukwu Ngozi Okeke and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coalbed methane reservoir (CBM) performance is controlled by a complex set of reservoir, geologic, completion and operational parameters and the inter-relationships between those parameters. Therefore in order to understand and analyze CBM prospects, it is necessary to understand the following; (1) the relative importance of each parameter, (2) how they change under different constraints, and (3) what they mean as input parameters to the simulator. CBM exhibits a number of obvious differences from conventional gas reservoirs, one of which is in its modeling. This thesis includes a sensitivity study that provides a fuller understanding of the parameters involved in coalbed methane production, how coalbed methane reservoirs are modeled and the effects of the various modeling parameters on its reservoir performance. A dual porosity coalbed methane simulator is used to model primary production from a single well coal seam, for a variety of coal properties for this work. Varying different coal properties such as desorption time ([tau] t), initial gas adsorbed (Vi), fracture and matrix permabilities ([kappa] f and [kappa] m), fracture and matrix porosity (Ø f and Ø m), initial fracture and matrix pressure (to enable modeling of saturated and undersaturated reservoirs), we have approximated different types of coals. As part of the work, I will also investigate the modeling parameters that affect the dual peaking behavior observed during production from coalbed methane reservoirs. Generalized correlations, for a 2-D dimensional single well model are developed. The predictive equations can be used to predict the magnitude and time of peak gas rate.

Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1979 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: