scholarly journals Coupling Numerical Simulation and Pattern Recognition to Model Production and Evaluate Carbon Dioxide Injection in Shale Gas Reservoir

2013 ◽  
Author(s):  
Amirmasoud Kalantari-Dahaghi
Keyword(s):  
Carbon Dioxide ◽  
Numerical Simulation ◽  
Pattern Recognition ◽  
Shale Gas ◽  
Carbon Dioxide Injection ◽  
Gas Reservoir ◽  
Shale Gas Reservoir

Numerical Simulation for Shale Gas Flow in Complex Fracture System of Fractured Horizontal Well

2018 ◽  
Vol 19 (3-4) ◽  
pp. 367-377 ◽  
Author(s):  
Yingzhong Yuan ◽  
Wende Yan ◽  
Fengbo Chen ◽  
Jiqiang Li ◽  
Qianhua Xiao ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Shale Gas ◽  
Horizontal Well ◽  
Fracture Network ◽  
Gas Reservoir ◽  
Complex Fracture ◽  
Shale Gas Reservoir ◽  
Fracture Parameters ◽  
Fracture Systems ◽  
Fractured Horizontal Well

AbstractComplex fracture systems including natural fractures and hydraulic fractures exist in shale gas reservoir with fractured horizontal well development. The flow of shale gas is a multi-scale flow process from microscopic nanometer pores to macroscopic large fractures. Due to the complexity of seepage mechanism and fracture parameters, it is difficult to realize fine numerical simulation for fractured horizontal wells in shale gas reservoirs. Mechanisms of adsorption–desorption on the surface of shale pores, slippage and Knudsen diffusion in the nanometer pores, Darcy and non-Darcy seepage in the matrix block and fractures are considered comprehensively in this paper. Through fine description of the complex fracture systems after horizontal well fracturing in shale gas reservoir, the problems of conventional corner point grids which are inflexible, directional, difficult to geometrically discretize arbitrarily oriented fractures are overcome. Discrete fracture network model based on unstructured perpendicular bisection grids is built in the numerical simulation. The results indicate that the discrete fracture network model can accurately describe fracture parameters including length, azimuth and density, and that the influences of fracture parameters on development effect of fractured horizontal well can be finely simulated. Cumulative production rate of shale gas is positively related to fracture half-length, fracture segments and fracture conductivity. When total fracture length is constant, fracturing effect is better if single fracture half-length or penetration ratio is relatively large and fracturing segments are moderate. Research results provide theoretical support for optimal design of fractured horizontal well in shale gas reservoir.

scholarly journals Experimental and numerical simulation of water adsorption and diffusion in shale gas reservoir rocks

2019 ◽  
Vol 3 (2) ◽  
pp. 165-174 ◽  
Author(s):  
Weijun Shen ◽  
Xizhe Li ◽  
Abdullah Cihan ◽  
Xiaobing Lu ◽  
Xiaohua Liu
Keyword(s):  
Numerical Simulation ◽  
Shale Gas ◽  
Water Adsorption ◽  
Gas Reservoir ◽  
Reservoir Rocks ◽  
Shale Gas Reservoir ◽  
And Diffusion

The numerical simulation of thermal recovery considering rock deformation in shale gas reservoir

2019 ◽  
Vol 138 ◽  
pp. 719-728 ◽  
Author(s):  
Jianwei Yuan ◽  
Ruizhong Jiang ◽  
Yongzheng Cui ◽  
Jianchun Xu ◽  
Qiong Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Shale Gas ◽  
Thermal Recovery ◽  
Rock Deformation ◽  
Gas Reservoir ◽  
Shale Gas Reservoir

scholarly journals Research progress and prospects of CO2 enhanced shale gas recovery and geologic sequestration

2018 ◽  
Vol 53 ◽  
pp. 04002
Author(s):  
Rong Chen ◽  
GuoHui Zhang ◽  
ChengGao Yi
Keyword(s):  
Numerical Simulation ◽  
Shale Gas ◽  
Carbonic Acid ◽  
Research Progress ◽  
Geologic Sequestration ◽  
Affecting Factors ◽  
Gas Reservoir ◽  
Shale Formations ◽  
Gas Recovery ◽  
Shale Gas Reservoir

CO2 injection to strengthen shale gas development is a new technology to improve shale gas recovery and realize geologic sequestration. Many scholars have studied these aspects of this technology: mechanism of CO2 displacement CH4, CO2 and CH4 adsorption capacity, affecting factors of shale adsorption CO2, CO2 displacement numerical simulation, and supercritical CO2 flooding CH4 advantages. Research shows that CO2 can exchange CH4 in shale formations, improve shale gas recovery, on the other hand shale formations is suitable for CO2 sequestration because shale gas reservoir is compact. The supercritical CO2 has advantages such as large fluid diffusion coefficient, CO2 dissolution in water to form carbonic acid that can effectively improve the formation pore permeability etc., so the displacement efficiency of supercritical CO2 is high. But at present the technology study mainly focus on laboratory and numerical simulation, there is still a big gap to industrial application, need to study combined effect of influence factors, suitable CO2 injection parameter in different shale gas reservoir, CO2 injection risk and solutions etc.

Simulation of Supercritical Carbon Dioxide Fracturing in Shale Gas Reservoir

2021 ◽  
Vol 30 (4) ◽  
pp. 1444-1451
Author(s):  
Weiqiang Song ◽  
Hongjian Ni ◽  
Peng Tang ◽  
Shichuan Zhang ◽  
Jichao Gao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Shale Gas ◽  
Gas Reservoir ◽  
Shale Gas Reservoir ◽  
Supercritical Carbon
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