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Upper limit estimate to wellhead flowing pressure and applicable gas production for a downhole throttling technique in high-pressure–high-temperature gas wells
In recent years, China has explored and exploited several high-pressure deep gas fields. Normally, high-pressure gas wells are gathered and processed...
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Gas diffusion property of compacted GMZ bentonite tested under different boundary conditions considering saturation and gas pressure
During the long-term operation of a deep geological repository, hydrogen, methane and carbon dioxide, etc. could be generated and accumulated in...
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Modeling of Coalbed Gas Pressure/Content Identification Using Image Analysis
Coalbed gas pressure and content are fundamental parameters for mine gas recovery and disaster prevention. In response to the lengthy measurement...
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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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Breakthrough Pressure Model of Shale Gas in Water-Saturated Nanopore-Throat Systems: Insights from Molecular Simulations
The abundant nanopore throats of shale formations significantly influence the transport of gas in shale reservoirs. The critical pressure of shale...
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Zonal Seepage in Coal Seams Generated by Hydraulic Fracturing Under Gas Pressure Attenuation: Characteristics and Affecting Factors
Hydraulic fracturing causes the fracture zone phenomenon in a coal seam. The effectiveness of coalbed methane (CBM) extraction is determined by the...
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Study on Variation Law of Volume Flow of Residual Gas Absorbed by Circulating Exhaust in Pressure Controlled Drilling
We developed a mathematical model of the gas-liquid two-phase flow in pressure-controlled cyclic exhausts by considering parameters such as gas...
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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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Optimization Design Method and Application of Completion String in High Temperature and High Pressure Gas Well Based on Wellbore Temperature-Pressure Effect
Based on the measured values, the yield strength attenuation law with the temperature of the 110SS and 2532-110 material tubing was obtained. Tubing...
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Evaluation Method and Analysis of Influencing Factors for Productivity of Ultra Deep and High Pressure Gas Wells
Due to the high temperature and pressure, as well as the development of multi-scale pores and fractures, the development of ultra deep gas reservoirs...
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A modified cell-to-cell simulation model to predict oil-gas minimum miscibility pressure
Calculating the minimum miscibility pressure (MMP) between crude oil and carbon dioxide (CO 2 ) is critical for optimizing injection parameters,...
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Ultradeep Carbonate Gas Reservoirs Reservoir Characteristics and Percolation Mechanism
This book provides a systematical investigation on the reservoir characteristics and percolation mechanism of ultradeep carbonate gas reservoirs,...
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Scheme Design of Rebuilding Gas-Cap Sandstone Reservoirs into Underground Gas Storage
At present, the main types of underground gas storage (UGS) are depleted gas reservoir, aquifer and salt cavern, and the technology of gas-cap...
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Gas Hydrate Disasters
Marine gas hydrate hazards pose a significant threat to submarine pipelines, drilling platforms, and the near-shore environment. These hazards are...
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Evaluation of Gas Injection Capacity of Gas Injection Wells in Reservoir-Type Gas Storage
In view of the problems of large error and lack of theoretical basis in the conventional evaluation methods for the gas injection capacity of gas...
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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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Gas Extraction Mechanism and Effect of Ultra-High-Pressure Hydraulic Slotting Technology: a Case Study in Renlou Coal Mine
Ultra-high-pressure hydraulic slotting technology is an effective method to realize pressure relief and permeability enhancement of a single coal...
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Significance of the high-pressure properties and structural evolution of gas hydrates for inferring the interior of icy bodies
Hydrogen, methane, and water ice are among the most abundant materials in the universe. Based on experimental, theoretical, and spacecraft data, gas...
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Do soft soil layers reduce the seismic kinematic distress of onshore high-pressure gas pipelines?
Onshore high - pressure gas pipelines constitute critical infrastructure that usually cross seismic - prone regions and are vulnerable to Permanent...
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Experimental study on the determination method of pressure relief gas transportation and storage channel under multiple factors
In the increasingly intense high-intensity mining process of coal mines, many factors comprehensively influence the spatial distribution...
