... performance underground coal gasification coal seam gas upstream oil & gas flow rate retraction rate reaction steam oxygen ratio URTEC-208271-MS Gasification Chamber Evolution and Recovery Performance of Underground Coal Gasification in Deep Coal Seam: A Numerical Simulation Study Bin Zhao...

... Abstract Coal mechanical properties are very important in assessing coal seam gas (CSG) borehole stability and reservoir permeability response to depletion. Obtaining coal directional mechanical properties can be challenging due to the lack of access to cores and the technical hurdle in making...

.... This study aims to investigate the factors affecting the fate of residual free gas during and after shut-in periods. A dual-porosity approach was used to model gas-water flow in a coal package built based on typical coal seam gas (CSG or CBM) well spacing in the Surat Basin. A heterogeneous model...

... to validate the history-matched ensemble. The results showed a good match of 12 months of the new production data, not used in history-matching. That highlights the robust prediction capabilities of the approach. coalbed methane localization area gas content artificial intelligence coal seam gas es...

... set of information for better understanding what may occur in the reservoir during gas depletion. coal seam gas experimental apparatus international journal gas bubble coalbed methane water salinity strain gauge under-water condition complex reservoir gas desorption experiment matrix...

.... This paper discusses the spatial asymmetry of coal properties and investigates the impact of including spatial asymmetry on flow simulations representing coal seam gas production. modeling & simulation reservoir characterization coalbed methane upstream oil & gas asymmetry function coal...

... response to swelling/shrinkage under various temperatures and selecting appropriate input parameter values into reservoir simulation and analysis. Introduction When conducting reservoir modeling of coal seam gas (CSG) production, three sets of input parameters are typically required: reservoir mechanical...

.... Abstract Bulk geomechanical properties in depleting coal seam gas (CSG) reservoirs are crucial to engineering design related to wellbore stability, drilling, and completion strategy. In this paper, a finite element model is presented to systematically predict the changes in bulk coal properties...

...-bearing basins. This paper investigated the effect of the dip angle on the flux of the methane up-dip, away from a coal seam gas (CSG) production well in a simple, planar, homogenous synthetic models. This paper reports the findings regarding gas movement during the production (pumping) period only...

... Abstract Hydraulic fractures can enhance well productivity from stress sensitive naturally fractured reservoirs such as coalbed methane or coal seam gas (CSG) reservoirs. Graded proppant injection (GPI) has been proposed to enhance long-term, far-field interconnectivity between the created...

... Abstract Hydrocarbon extraction from coal seam gas (CSG) reservoirs relies on horizontal drilling and completions. However, the drilling of horizontal wells usually faces challenges as inappropriate equivalent circulating density (ECD) can induce borehole collapse. Hence, the optimisation...

... Abstract Horizontal wells have become commonplace and have increased the effectiveness of coalbed methane or coal seam gas (CSG) reservoir drainage in Australia. To date, there have been limited applications of horizontal wellbores employing multiple hydraulic fractures, either because...

.... In coal seam gas reservoirs, tracer tests could also be used to investigate the connections between the producing formation and other geological units such as aquifers. A conservative water tracer is required to be chemically inert, environmentally safe, non-toxic, and stable at reservoir conditions...

... This study investigates the evolution of coal seam gas (CSG) reservoir properties in relation to a gradual and immediate decline in Bottom-Hole Pressure (BHP) to determine an optimum dewatering strategy to maximize gas production rates. It has been reported in literature that drawing down...

... Abstract This paper describes how Reservoir to Surface Integrated Asset Models (IAM) were used to assess the production profile of a Coal Seam Gas (CSG) development. Specific attention is made to the modelling of the typical production phases of CSG systems such as the dewatering, gas...

... Abstract This project establishes a new workflow to improve the dewatering efficiency of under-saturated CSG (Coal Seam Gas) reservoirs, while minimising reservoir damage related to coal compressibility. The over-arching goal is to maximise long-term productivity of wells to improve...

... monitoring fluid modeling Artificial Intelligence production logging coal seam gas taylor bubble mechanistic model coalbed methane Fluid Dynamics correlation equation of state Upstream Oil & Gas Simulation Reservoir Surveillance multiphase flow lattice firouzi closure relation stability...

... production monitoring Reservoir Surveillance production control coalbed methane neural network coal seam gas well production logging complex reservoir regression coal bed methane Drillstem Testing drillstem/well testing machine learning Artificial Intelligence bottom-hole pressure...

... of the core processed from CT scan data. Apart from the image analysis, Mercury intrusion porosimetry (MIP) data is used to obtain the pore distribution and permeability. natural language coal seam gas adsorption Artificial Intelligence complex reservoir pore structure coalbed methane resolution...

... wellbore integrity coal bed methane Reservoir Characterization reservoir geomechanics coalbed methane drilling operation coal seam gas depletion reduction Wellbore Design wellbore wall matrix shrinkage effect radial stress stress distribution Directional Drilling matrix shrinkage...