Combined Energy Recovery from Coal Seam Gas Reservoirs and Geothermal Resources (Simulation Study)

2011 ◽  
Author(s):  
Alireza Salmachi ◽  
Manouchehr Haghighi ◽  
David William Dixon ◽  
Peter James Hart ◽  
Ashley Michael Jachmann
Keyword(s):  
Coal Seam ◽  
Simulation Study ◽  
Energy Recovery ◽  
Coal Seam Gas ◽  
Gas Reservoirs ◽  
Geothermal Resources

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

2011 PESA industry review: exploration

2012 ◽  
Vol 52 (1) ◽  
pp. 67
Author(s):  
Phillip Cooney
Keyword(s):  
Coal Seam ◽  
Regional Differences ◽  
High Rate ◽  
Coal Seam Gas ◽  
Geothermal Resources ◽  
Petroleum Wells ◽  
Liquid Natural Gas ◽  
Rate Of Success ◽  
Exploration Activity ◽  
Cooper Basin

A continuing high and stable oil price through the latter part of 2011, oscillating around US$120 in the case of Tapis Crude, underpinned a small increase in exploration in 2011 in Australia compared with 2010, although there were marked regional differences between the northwest and southeast parts of the country. Exploration continued to be focused on the northwest offshore seeking incremental reserve additions of conventional gas to support planned and proposed liquid natural gas (LNG) projects and although information is hard to confirm, in general this program appears to have been successful with a number of relatively smaller discoveries and at least one major find, Zola–1. In the Cooper Basin exploration activity resumed after almost being shut down by floods in 2010, although flooding continued to be a problem in 2011. In the South Australian part, 27 new field wildcat (NFW) wells were drilled in 2011 compared with 8 in 2010. The program was also marked by a high rate of success. The other current major area of activity, the Queensland coal seam gas (CSG) program was also affected by flooding early in 2011 with 524 coal seam gas (CSG) wells drilled this year, compared with 648 in 2010 and more than 900 in 2009. In many jurisdictions shale gas or shale oil wells are not reported separately and are included in conventional petroleum wells in this report. Exploration for geothermal resources continued at a relatively low level with only 10 wells drilled in Australia in 2011, the most active state was Victoria with five wells. Despite the increase in activity, preliminary indications are that total exploration expenditure in 2011 will be less than in 2010. It is interesting to note that while the exploration effort in terms of wells and seismic has not changed much in the last few years the total expenditure has steadily increased in part reflecting the movement into deeper water drilling.

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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