Coalbed Methane in the Illinois Basin: Development Challenges in a Frontier Area

Lombardi, Tracy; Lambert, Stephen B.

doi:10.2523/72367-ms

Cited by 3 publications

(3 citation statements)

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“…3 shows a stratigraphic column that provides a cross reference from the three adjoining states of Illinois, Indiana, and Kentucky for the major coal units identified in the Illinois basin. 3 These coals are defined by rank as high-Volatile A bituminous coal with relatively low ash contents and quality similar to the Appalachian and Black Warrior basin coals. Eight of these coals are continuous across the 43,000-acre tract with cumulative thickness ranging from 22 to 55 ft, and an average cumulative thickness of 33 ft. Archer et al, surmised this to be the case in their review of the basin in 1980.…”

Section: Geologymentioning

confidence: 99%

Case History: First Commercial Illinois Coal Bed Methane Project Commences Via a Structured Resource Evaluation Plan

Rodvelt

Oestreich²

2005

Proceedings of SPE Eastern Regional Meeting

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThe Illinois Basin has an estimated 21 Tcf of natural gas trapped in the coal seams that cover Illinois and Indiana. A Saline County, Illinois coalbed methane (CBM) project has been selling gas into pipelines. The authors describe the evaluation plan used to set up a pilot project and proceed into field development.A step-wise program of gathering reservoir data preceded a successful pilot program where gas-content information, thickness maps, and adsorption isotherms were acquired and integrated into a Davis and Dekoven drilling program. Gas producibility was established from a five-spot pilot (five wells drilled in a field to help operators evaluate the CBM commercial potential of the field) leading to a 30-well development program in 2004. Well information presented includes spacing, orientation, reservoir parameters, and completion designs. The description of a remote monitoring system that reduces labor costs and provides real-time data via the Internet is also provided. Future expansion plans include additional testing and zonal completions.

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Section: Geologymentioning

confidence: 99%

Case History: First Commercial Illinois Coal Bed Methane Project Commences Via a Structured Resource Evaluation Plan

Rodvelt

Oestreich²

2005

Proceedings of SPE Eastern Regional Meeting

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“…[1][2][3][4][5][6][7][8] In addition to contributing to clean fuel production, extraction of methane from coal seams has been recognized as an effective approach to provide a safe mining environment.…”

Section: Introductionmentioning

confidence: 99%

Well-Completion Strategies for Methane Gas Production from Coal Seams Using Simulation

Bilgesu¹,

Ali²

2005

All Days

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractNatural gas plays an increasingly important role as a clean energy source. It is estimated that 10% of the produced gas comes in the form of methane from coal seams and the contribution of gas from coal is expected to increase to 20% in the next 10 years. There is a need to develop more gas wells that are managed efficiently. The inherent problem is the maximization of production with minimum cost. The maximum production is a function of gas content controlled by the coal properties such as porosity, permeability, pressure, desorption time and ash content. The recent trend is to develop horizontal wells to increase the recovery times by quickly dewatering the seams and to obtain gas production early in the life of the well. Developing horizontal wells in thin coal seams are expensive and the prospects need to be evaluated properly in order to maximize gas production.Many factors affect the methane production capacity of a coal seam and to find the best well planning and design is a challenge. Many characteristics of coal such as gas content, pressure and saturation are determined. On the other hand, decisions regarding the number, location, and type of wells, completion methods, hole size and similar decisions depend on the properties of coal.In this paper, we presented the results of a study conducted to investigate the methane gas production strategies for different coal seams. A main goal of this study is to optimize methane gas production from coal seams. Presented in this study are the effects of reservoir properties on the efficiency of selected well design.

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“…The distribution of gas-in-place by coal rank was estimated on that basis; the result is presented in Table 11. A review of activity in the Illinois basin 26,30,31 suggests that the development activity, while largely in the HV coal area, does cover the HVA area in the southeast portion of the basin. Therefore the assigned coal rank distribution for the "commercial" area, presented in Table 12, was designed to have a slightly higher percentage of HVA coal than the basin average.…”

Section: Illinois Basin Distribution Of Gas Resource By Coal Rankmentioning

confidence: 99%

Assessment of CO2 Sequestration and ECBM Potential of U.S. Coalbeds

Reeves¹

2003

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Coalbed Methane in the Illinois Basin: Development Challenges in a Frontier Area

Cited by 3 publications

References 0 publications

Case History: First Commercial Illinois Coal Bed Methane Project Commences Via a Structured Resource Evaluation Plan

Case History: First Commercial Illinois Coal Bed Methane Project Commences Via a Structured Resource Evaluation Plan

Well-Completion Strategies for Methane Gas Production from Coal Seams Using Simulation

Assessment of CO2 Sequestration and ECBM Potential of U.S. Coalbeds

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