Modeling the effects of gas slippage, cleat network topology and scale dependence of gas transport in coal seam gas reservoirs

Fuel ◽  
2020 ◽  
Vol 264 ◽  
pp. 116715 ◽  
Author(s):  
Xu Yu ◽  
Lincheng Xu ◽  
Klaus Regenauer-Lieb ◽  
Yu Jing ◽  
Fang-Bao Tian
Keyword(s):  
Coal Seam ◽  
Network Topology ◽  
Gas Transport ◽  
Scale Dependence ◽  
Coal Seam Gas ◽  
Gas Reservoirs ◽  
Gas Slippage

Graded Proppant Injection into Coal Seam Gas and Shale Gas Reservoirs for Well Stimulation

2015 ◽  
Author(s):  
Alireza Keshavarz ◽  
Alexander Badalyan ◽  
Themis Carageorgos ◽  
Pavel Bedrikovetsky ◽  
Ray Johnson
Keyword(s):  
Coal Seam ◽  
Shale Gas ◽  
Coal Seam Gas ◽  
Gas Reservoirs ◽  
Well Stimulation ◽  
Shale Gas Reservoirs

Analytical modelling of coal failure in coal seam gas reservoirs in different stress regimes

2020 ◽  
Vol 128 ◽  
pp. 104259 ◽  
Author(s):  
Mohammadreza Zare Reisabadi ◽  
Manouchehr Haghighi ◽  
Alireza Salmachi ◽  
Mohammad Sayyafzadeh ◽  
Abbas Khaksar
Keyword(s):  
Coal Seam ◽  
Analytical Modelling ◽  
Coal Seam Gas ◽  
Gas Reservoirs

3D Modelling to assess gas-in-place uncertainty in coal seam gas reservoirs

2008 ◽  
Vol 48 (2) ◽  
pp. 461
Author(s):  
Shalene McClure ◽  
Ishtar Barranco
Keyword(s):  
Coal Seam ◽  
3D Modelling ◽  
Coal Seam Gas ◽  
Gas Reservoirs

Vertical gas migration associated with coal seam gas production

2016 ◽  
Vol 56 (2) ◽  
pp. 602
Author(s):  
Ludovic Ricard ◽  
Julian Strand
Keyword(s):  
Coal Seam ◽  
Risk Evaluation ◽  
Critical Role ◽  
Gas Production ◽  
Mitigation Strategies ◽  
Gas Migration ◽  
Coal Seam Gas ◽  
Gas Reservoirs ◽  
Gas Leakage ◽  
Migration Pathways

Gas migration outside coal seam gas reservoirs has been identified as a risk associated with CSG production. While such an event has not been reported or scientifically associated with CSG production, understanding the physical mechanism of the vertical migration in the overburden involved should gas leakage occur would improve mitigation strategies and risk evaluation. In this extended abstract, a series of key modelling scenarios of gas migration above the reservoir are developed. Interpretation of the scenarios highlights that: the seal/leakage nature of the overburden strongly impacts gas migration and volume of gas leaked; when leakage does occur, the leaked volume represents a very small portion of the original gas in place and volume of gas produced; the connectivity of the overburden plays a critical role on the gas migration pathways and volume of gas leaked; and, residual gas saturation, and relative permeability hysteresis provide means to trap the mobile gas, significantly reducing the volume of gas leaked reaching shallower formations.

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