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Influence of Pore Structure Characteristics of Low Permeability Coal on Gas Nonlinear Seepage
Coalbed methane (CBM) mining has always been plagued by low mining efficiency. CBM-rich areas have high mining efficiency, but their formation is...
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Evolution of Permeability and Gas Seepage in Deep Coal Under 3D Stress
More and more gas extraction in deep coal seam is conducted under extreme geological conditions. The coal permeability determines the efficiency of...
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Experimental Study on the Time-Dependent Gas Permeability of Fractures in Shales
The gas permeabilities of shale fractures provide a critical basis for deeply understanding the subsurface fluid flow processes in many underground...
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Synchronous Inversion of Coal Seam Gas Pressure and Permeability Based on a Dual Porosity/Dual Permeability Model and Surrogate Optimization Algorithm
Rapid and accurate acquisition of permeability and gas pressure is crucial for gas development and disaster prevention in coal mines. However, these...
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Analysis and modelling of gas relative permeability in reservoir by hybrid KELM methods
Petroleum reservoirs are often influenced by various flow behaviours including the mixture of gas, water and oil. The gas relative permeability is...
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Study on Elastoplastic Damage Constitutive Model and Permeability Evolution Law of Gas-Bearing Coal
Original coal reservoir contains massive free and adsorbed methane, that directly affects the mechanical properties and permeability of coal with its...
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Research on Key Parameters of Natural Gas Flooding Technology in Deep Low Permeability Reservoir
As the continuation of conventional reservoir development, deep low permeability reservoir has the characteristics of large reserves, deep burial and...
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Unstable Pressure Analysis of Gas Drive in Low Permeability Carbonate Reservoirs
Unstable pressure analysis is an important technology to monitor and evaluate the development performance of gas drive. The study divides the fluid...
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Research on Water Alternating Gas (WAG) Flooding Dynamic Adjustment of Water-Gas Ratio and Slug Sizes Method in Low Permeability Reservoir
CO2 flooding is being widely practiced in low permeability reservoirs for Enhanced Oil Recovery, which is of profound significance in reducing...
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Permeability Damage Mechanism and Evolution of Gas-Bearing Coal Seams Induced by Drilling Fluid
Gas drainage is critical for underground coal mining in coal seams that contain high coalbed methane. We propose an underground pressurized drilling...
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Blockage Types of Gas Well and Technical Countermeasures for De-Plugging in Low-Permeability Tight Gas Reservoirs
The Changqing gas field is a typical low-permeability tight lithological gas reservoir with strong heterogeneity and poor physical properties. With...
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Deformation characteristics, gas permeability and energy evolution of low-permeability sandstone under cyclic loading and unloading path
To guarantee the safety and stability of underground disposal, deformation behavior and permeability evolution of host rock mass are studied in the...
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Numerical modeling on high-temperature and high-pressure gas condensate recovery considering the viscosity variation and dynamic relative permeability
The production evaluation of high-temperature and high-pressure gas condensate remains unsatisfactory in terms of precision due to the inadequate...
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Methods for Improving Precision of Production Prediction in Low Permeability Oil&Gas Fields
The reserve-production ratio control production prediction method has the characteristics of less data and parameters required, higher prediction...
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Quantification of Gas Transport Behavior During Coalbed Methane Extraction in A Coal Seam Considering a Dual-Porosity/Single-Permeability Model
Due to the inherent deposition environment and extraction challenges in a coal seam, quantification of its gas transport behavior serves as the...
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Key Technology for Infilling Adjustment of Well Pattern in Large Low Permeability Heterogeneous Gas Reservoirs: A Case Study in the M Gas Field
Comparing to sandstone gas reservoir, the low-permeability carbonate gas reservoir with has higher natural gas storage capacity and more economic...
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Spatial evolution mechanism of coal structure damage and gas permeability under water-based ultrasonic treatment
This study investigates the spatial damage effect of water-based ultrasonic on the structure and the permeability of high-grade coal. Herein,...
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Analysis of Hydraulic Permeability Enhancement Effect Based on an Experimental System of Highly Pressurized Water Invasion and Gas Seepage
To study the influence of various factors on coal permeability in the process of coal seam water injection and the relationship between water...
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Gas and Water Distribution Patterns and Development Suggestions for Low Permeability and Thick Bottom Water Gas Reservoirs with Low Amplitude Structures
Focusing on Dengying Formation gas reservoir in the north of Sichuan Basin, it is a key field for domestic Carbonate rock gas reservoirs to increase...
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Adsorption Enhanced Gas Uptake in Nanodarcy Permeability Shale
These images show the gas uptake into a cylindrical Marcellus shale rock sample 12 mm in diameter. Periodic 3D X-ray microCT imaging at a voxel...