Results 161 to 170 of about 16,144,632 (222)

Evaluating deep coal rock gas fracturing sweet spot intervals using PSO-ELM algorithm and petrophysical logging data. [PDF]

Sci Rep
Liu Z, Wang D, Yang B, Tang J, Wang C, Wang W, Hu X, Zhang J.   +7 more
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AI-based development and optimization of sealing materials for secondary grouting in methane recovery. [PDF]

Sci Rep
Zandy Ilghani N, Maleki H.
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Formation Evaluation of Exploration Coalbed-Methane Wells

SPE Formation Evaluation, 1990
SummaryDevelopment of coalbed-methane reservoirs requires accurate determination of gas in place and natural fracture permeability. This paper outlines steps needed to evaluate reservoir properties and to predict well deliverability. Procedures are documented with data and analyses from San Juan basin development projects. The paper includes an example
M.J. Mavor, J.C. Close, R.A. McBane
openaire   +1 more source

Reserves Estimation for a Coalbed Methane Well

Journal of Canadian Petroleum Technology, 2003
Abstract A linear material-balance plot constructed based on "P/Z vs. cumulative production" is frequently used to define the Original- Gas-In-Place (OGIP). The defined OGIP is then used to estimate the reserves. However, a linear P/Z plot can only be obtained if the well is producing free gas from a conventional ...
F.S. Hsieh, C. Vega, L. Vega
openaire   +1 more source

Completions and Stimulations for Coalbed Methane Wells

International Meeting on Petroleum Engineering, 1995
Abstract Amoco is producing coalbed methane from several hundred wells in both San Juan and Warrior basins. These wells were completed/stimulated in one of two ways: (1) openhole cavity completions, (2) hydraulic fracture stimulations through perforations in casing.
Ian Palmer, Hans Vaziri, Mohamad Khodaverdian, John McLennan, V. Prasad, K., Paul Edwards, Courtney Brackin, Mike Kutas, Rhon Fincher   +8 more
openaire   +1 more source

Variability in coalbed-methane well performance: a case study

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1991
Summary This paper presents a case study of three producing coalbed-methane wellswith various productivities in the Oak Grove field. productivities in the OakGrove field. Each well is examined in terms of geologic setting, stimulationeffectiveness, simulator-predicted recoveries, and observed well performance togain
M.D. Zuber, S.R. Reeves, A.H. Jones, R.A. Schraufnagel   +3 more
openaire   +1 more source

Anisotropic Model for Permeability Change in Coalbed-Methane Wells

SPE Reservoir Evaluation & Engineering, 2014
Summary With depletion of coalbed-methane (CBM) wells in the San Juan basin, permeability rises by 10–100 times. Similar permeability increases are found in other CBM basins around the world. Models previously advanced to explain this behavior combine a compaction mechanism (which closes cleats) with matrix shrinkage (which opens cleats).
Robert Moore, Ian Palmer, Nigel Higgs
openaire   +1 more source

Characteristics of Coalbed Methane Seepage into Multibranch Wells

Chemistry and Technology of Fuels and Oils, 2014
Coalbed methane refers to the gas absorbed in the coal matrix. We show the advantages of coalbed methane extraction by drilling multibranch horizontal wells compared with drilling vertical wells. We study the characteristics of methane seepage into multilateral wells. Theoretical principles are formulated for designing a coalbed development program and
Li Hui, Wang Yan, Wang Juan, Luo Zhongming, Xu Tao   +4 more
openaire   +1 more source

Utilization and Recovery Economics for Vertical Wells in Coalbed Methane

SPE Unconventional Gas Recovery Symposium, 1980
Abstract Previous economic studies of the recovery and utilization of methane from coalbeds using vertical wells were based on drainage in advance of mining where a single seam is drained with well spacing designed for rapid predrainage.
Alexander Gillies, Arnold Snygg, Debra Dickehuth   +2 more
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Dewatering Coalbed Methane Wells Using ESPCPs

Canadian International Petroleum Conference, 2008
Abstract Trident Exploration operates a significant portion of a Mannville-age coalbed methane field near Ft. Assiniboine, Alberta, Canada. This presently is the only commercial Mannville project in Alberta and currently produces about 90mmcf/d.
M.B. Krawiec, C.M. Finn, J.R. Cockbill, D.E. Fortnum   +3 more
openaire   +1 more source