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 Advanced Reservoir and Production Engineering for Coal Bed Methane written by Pramod Thakur and published by Gulf Professional Publishing. This book was released on 2016-10-05 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Reservoir and Production Engineering for Coal Bed Methane presents the reader with design systems that will maximize production from worldwide coal bed methane reservoirs. Authored by an expert in the field with more than 40 years of’ experience, the author starts with much needed introductory basics on gas content and diffusion of gas in coal, crucial for anyone in the mining and natural gas industries. Going a step further, chapters on hydrofracking, horizontal drilling technology, and production strategies address the challenges of dewatering, low production rates, and high development costs. This book systematically addresses all three zones of production levels, shallow coal, medium depth coal, and deep coal with coverage on gas extraction and production from a depth of 500 feet to upwards of 10,000 feet, strategies which cannot be found in any other reference book. In addition, valuable content on deep coal seams with content on enhanced recovery, a discussion on CO2 flooding, infra-red heating and even in-situ combustion of degassed coal, giving engineers a greater understanding on how today’s shale activities can aid in enhancing production of coal bed for future natural gas production. Delivers how to recover and degas deeper coal seams while lowering development costs Addresses both sorption process and irreducible fraction of gas in coal, with examples based on the author’s 40 plus years of direct experience Explains how the same techniques used for production from deep shale activity can produce gas from deep coal seems with the help of enhanced recovery, leading to increased gas production
Download or read book Fundamentals of Coalbed Methane Reservoir Engineering written by John Seidle and published by Pennwell Corporation. This book was released on 2011 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This straightforward introduction to coalbed methane gives insight and detail to industry professionals involved with this unique energy resource. Author John Seidle reviews global and U.S. coals and coalbed methane resources, takes the reader through the fundamentals of coal and its importance to coal gas production, and finishes with a discussion of the calculation of probabilistic coalbed methane reserves and pilot philosophy." "In this long-awaited book, Seidle also examines coal deposits as reservoirs, discusses the physics of gas storage in coal and its production, and covers basic equations of mass balance and production rates, negative decline, simulation of coal gas recovery, and enhanced coalbed methane recovery."--Back cover.
Download or read book An Assessment of Coalbed Methane Exploration Projects in Canada written by F. M. Dawson and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication assesses the exploration opportunities for coalbed methane in Canada, based on a review of available geological, engineering, and production data from wellbores that sampled and tested various coal intervals from the major coal-bearing basins in Canada. A set of geological parameters was established that includes the ideal key threshold values for successful coalbed methane gas generation, storage, and producibility. The thresholds presented are guidelines & base levels that allow different exploration plays to be evaluated & compared. For each well, target zones and/or structures were defined, and data analyses & interpretations were conducted to determine whether the completed wellbore tests adequately assessed the coalbed methane potential. From the results of this technical assessment, several coalbed methane prospective areas are delineated in four distinctive exploration play categories: restricted basins, shallow foreland basins, deep foreland basins, and foothills & mountain regions. For each high priority target area, a recommended next step of assessment is defined.
Download or read book Coalbed Methane Scientific Environmental and Economic Evaluation written by M. Mastalerz and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coalbed gas has been considered a hazard since the early 19th century when the first mine gas explosions occurred in the United States in 1810 and France in 1845. In eastern Australia methane-related mine disasters occurred late in the 19th century with hundreds of lives lost in New South Wales, and as recently as 1995 in Queensland's Bowen Basin. Ventilation and gas drainage technologies are now in practice. However, coalbed methane recently is becoming more recognized as a potential source of energy; rather than emitting this gas to the atmosphere during drainage of gassy mines it can be captured and utilized. Both economic and environmental concerns have sparked this impetus to capture coalbed methane. The number of methane utilization projects has increased in the United States in recent years as a result, to a large extent, of development in technology in methane recovery from coal seams. Between 1994 and 1997, the number of mines in Alabama, Colorado, Ohio, Pennsylvania, Virginia, and West Virginia recovering and utilizing methane increased from 1 0 to 17. The Environmental Protection Agency estimates that close to 49 billion cubic feet (Bet) of methane was recovered in 1996, meaning that this amount was not released into the atmosphere. It is estimated that in the same year total emissions of methane equaled 45. 7 Bcf. Other coal mines are being investigated at present, many ofwhich appear to be promising for the development of cost-effective gas recovery.
Download or read book Coal Bed Methane written by Pramod Thakur and published by Elsevier. This book was released on 2014-06-14 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal Bed Methane: From Prospect to Pipeline is the proceedings of the 25th anniversary of the North American Coal Bed Methane Forum. It provides the latest advancements in the production of coal bed methane covering a variety of topics, from exploration to gas processing, for commercial utilization. Additionally, it presents the origin of gas in coal, reservoir engineering, control of methane in coal mines, production techniques, water management, and gas processing. The vast coal resources in the United States continue to produce tremendous amounts of natural gas, contributing to a diverse range energy assets. Following a rapid advancement and subsequent plateau in technological developments, this book captures the full life cycle of a well and offers petroleum geologists and engineers a single source of a broad range of coal bed methane applications. 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. It also covers legal issues, permitting, and economic analysis of CBM projects. Edited by a team of coal bed methane experts from industry, academia and government who have more than 75 years of combined experience in the field Authored by well-recognized members of the gas and coal industry, universities, US government departments, such as the Department of Energy and the National Institute of Occupational Safety and Health (NIOSH) More than 200 figures, photographs, and illustrations aid in the understanding of the fundamental concepts Presents the full scope of improvements in US energy independence, coal mine safety, and greenhouse gas emissions
Download or read book Economic Evaluation of Coalbed Methane Production in the Powder River Basin Wyoming Based on History Matching Using Reservoir Simulation written by Gary Wm Reid and published by . This book was released on 1991 with total page 328 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 2020-04-17 with total page 460 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 Comparison of Computation Methods for CBM Production Performance written by Carlos A. Mora and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coalbed methane (CBM) reservoirs have become a very important natural resource around the world. Because of their complexity, calculating original gas in place and analyzing production performance require consideration of special features. Coalbed methane production is somewhat complicated and has led to numerous methods of approximating production performance. Many CBM reservoirs go through a dewatering period before significant gas production occurs. With dewatering, desorption of gas in the matrix, and molecular diffusion within the matrix, the production process can be difficult to model. Several authors have presented different approaches involving the complex features related to adsorption and diffusion to describe the production performance for coalbed methane wells. Various programs are now commercially available to model production performance for CBM wells, including reservoir simulation, semi-analytic, and empirical approaches. Programs differ in their input data, description of the physical problem, and calculation techniques. This study will compare different tools available in the gas industry for CBM reservoir analysis, such as numerical reservoir simulators and semi-analytical software programs, to understand the differences in production performance when standard input data is used. Also, this study will analyze how sorption time (for modeling the diffusion process) influences the gas production performance for CBM wells.
Download or read book Coalbed Methane Extraction written by Robert M. Davidson and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the extraction of methane from coalbeds as a resource in its own right and not as a mining hazard, emission or by-product.
Download or read book Coalbed Methane written by Rudy E. Rogers and published by Prentice Hall. This book was released on 1994 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methane stored in coalbeds has emerged as an energy source that offers a viable alternative to fossil fuels. This reference discusses the principles of methane storage in coal and the practices of producing the methane economically, and provides an analysis of the coalbed methane process.
Download or read book Diffusion Characterization of Coal for Enhanced Coalbed Methane Production written by Pawan Chhajed and published by . This book was released on 2011 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the concept of displacement of sorbed methane and enhancement of methane recovery by injection of CO2 into coal, while sequestering CO2 . The objective of this study was to investigate the diffusion behavior of San Juan Basin coal under single and competitive gas environments. The movement of gas in a coalbed reservoir starts in the coal matrix with diffusion towards the naturally occurring cleat network surrounding the matrix blocks. The gas production potential from coalbed reservoirs under different gas environments was, therefore, estimated by studying the diffusion behavior of the coal type. The results clearly showed that the rate of diffusion increases with decreasing reservoir pressure, the increase being exponential at low/very low pressure. As a final step, a simulation study was carried out using the experimental results to predict long-term gas production from coalbed reservoirs with and without CO2 injection. This was followed by a preliminary economic analysis in order to estimate the feasibility of enhanced recovery method by CO2 injection by calculating the net present value of a project with and without carbon credits. The results showed that it is possible to obtain significant improvement in methane recovery by CO2 injection. However, it becomes economically feasible only with carbon credits.
Download or read book Dual permeability Dual porosity Simulator with Permeability Evolution for Production Analysis of Coalbed Methane Reservoir written by Yao-cheng Jan and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production behavior of CBM is complex and difficult to predict and analyze because it is governed by the complex physics including desorption mechanism, multi-mechanistic gas flow, initial gas content, and permeability evolution.Numerical reservoir simulation is a reliable technique to estimate reservoir performance and production. Therefore, in this research, we developed a 3-D, 2 phase, dual porosity, dual permeability reservoir simulator with permeability evolution. By using the developed model, we also conducted a series of parametric studies to quantify the effects of desorption mechanism, adsorption capacity, multi-mechanistic flow, cleat spacing, initial gas content, permeability evolution, production pressure, and hydraulic fracture treatment.From the results, the cumulative gas recovery will increase with adsorption capacity and initial gas content increased, lower flowing bottomhole pressure, larger diffusion coefficient, and smaller fracture spacing. We found that permeability evolution and initial gas content seem to impact CBM production more than other factors.
Download or read book Coalbed Methane written by and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management and Effects of Coalbed Methane Produced Water in the Western United States written by National Research Council and published by National Academies Press. This book was released on 2010-11-15 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: In some coalbeds, naturally occurring water pressure holds methane-the main component of natural gas-fixed to coal surfaces and within the coal. In a coalbed methane (CBM) well, pumping water from the coalbeds lowers this pressure, facilitating the release of methane from the coal for extraction and use as an energy source. Water pumped from coalbeds during this process-CBM 'produced water'-is managed through some combination of treatment, disposal, storage, or use, subject to compliance with federal and state regulations. CBM produced water management can be challenging for regulatory agencies, CBM well operators, water treatment companies, policy makers, landowners, and the public because of differences in the quality and quantity of produced water; available infrastructure; costs to treat, store, and transport produced water; and states' legal consideration of water and produced water. Some states consider produced water as waste, whereas others consider it a beneficial byproduct of methane production. Thus, although current technologies allow CBM produced water to be treated to any desired water quality, the majority of CBM produced water is presently being disposed of at least cost rather than put to beneficial use. This book specifically examines the Powder River, San Juan, Raton, Piceance, and Uinta CBM basins in the states of Montana, Wyoming, Colorado, New Mexico, and Utah. The conclusions and recommendations identify gaps in data and information, potential beneficial uses of CBM produced water and associated costs, and challenges in the existing regulatory framework.
Download or read book Evaluation of Coalbed Methane Resource Potential Using Limited Data written by Oluwabiyi Michael Olaniran and published by . This book was released on 2005 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This study presents the results of the evaluation of the Coalbed Methane (CBM) resource potential of the Cook Inlet Basin using a computer-aided well log analysis of the subsurface data. Coal seams were identified from the well logs. Formation and reservoir fluid properties including porosity, water saturation and net pay thickness of the coal seams were determined. The analysis revealed discontinuous coal seams interspaced largely by mudstone, silt, and sandstone formations within the depth of investigation. The CBM resource (Original Gas In Place) and recoverable reserves were estimated on per acre-foot basis. Monte Carlo simulation was run to refine the estimated CBM reserves and to allow for variations in the measured petrophysical input parameters used in the resource evaluation"--Leaf iii.
Download or read book Gas Transport in Porous Media written by Clifford K. Ho and published by Springer Science & Business Media. This book was released on 2006-10-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: CLIFFORD K. HOAND STEPHEN W. WEBB Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA Gas and vapor transport in porous media occur in a number of important applications includingdryingofindustrialandfoodproducts,oilandgasexploration,environm- tal remediation of contaminated sites, and carbon sequestration. Understanding the fundamental mechanisms and processes of gas and vapor transport in porous media allows models to be used to evaluate and optimize the performance and design of these systems. In this book, gas and vapor are distinguished by their available states at stan- ? dard temperature and pressure (20 C, 101 kPa). If the gas-phase constituent can also exist as a liquid phase at standard temperature and pressure (e. g. , water, ethanol, toluene, trichlorothylene), it is considered a vapor. If the gas-phase constituent is non-condensable at standard temperature and pressure (e. g. , oxygen, carbon di- ide, helium, hydrogen, propane), it is considered a gas. The distinction is important because different processes affect the transport and behavior of gases and vapors in porous media. For example, mechanisms specific to vapors include vapor-pressure lowering and enhanced vapor diffusion, which are caused by the presence of a g- phase constituent interacting with its liquid phase in an unsaturated porous media. In addition, the “heat-pipe” exploits isothermal latent heat exchange during evaporation and condensation to effectively transfer heat in designed and natural systems.
