Characterization methods for mass transfer of multiple media in shale gas reservoirs

Su, Yuliang; Sheng, Guanglong; Wang, Wendong; Zhan, Shiyuan; Zhang, Qi; Lu, Mingjing; Li, Yajun

doi:10.1360/n092017-00201

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…The gas migration in organic 3 Lithosphere includes the following forms: viscous flow considering slip effect, Knudsen diffusion, surface diffusion, and Langmuir adsorption/desorption. According to the previous research results, the apparent porosity/permeability can be expressed as [41]…”

Section: Characterization Of Porosity/permeability Of Matrixmentioning

confidence: 99%

“…Gas migration in inorganic matter micropore media includes viscous flow and Knudsen diffusion considering slip effect. Similarly, the apparent permeability Lithosphere of inorganic matter coupled with gas viscous slip flow and Knudsen diffusion can be obtained [41]:…”

Section: Characterization Of Porosity/permeability Of Matrixmentioning

confidence: 99%

“…According to the basic assumption of the model, different medium size, and quantity distribution characteristics, the discrete medium model in Figure 2 is treated as continuity equivalent. The apparent porosity and permeability of the matrix are as follows [41]:…”

Section: Characterization Of Porosity/permeability Of Matrixmentioning

confidence: 99%

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A New Approach for Automatic Optimization of Complex Fracture Network in Shale Reservoirs

Wang

Zhou

2021

Lithosphere

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Shale gas reservoirs have gradually become the main source for oil and gas production. The automatic optimization technology of complex fracture network in fractured horizontal wells is the key technology to realize the efficient development of shale gas reservoirs. In this paper, based on the flow model of shale gas reservoirs, the porosity/permeability of the matrix system and natural fracture system is characterized. The fracture network morphology is finely characterized by the fracture network expansion calculation method, and the flow model was proposed and solved. On this basis, the influence of matrix permeability, matrix porosity, fracture permeability, fracture porosity, and fracture length on the production of shale gas reservoirs is studied. The optimal design of fracture length and fracture location was carried, and the automatic optimization method of complex fracture network parameters based on simultaneous perturbation stochastic approximation (SPSA) was proposed. The method was applied in a shale gas reservoir, and the results showed that the proposed automatic optimization method of the complex fracture network in shale gas reservoirs can automatically optimize the parameters such as fracture location and fracture length and obtain the optimal fracture network distribution matching with geological conditions.

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Section: Characterization Of Porosity/permeability Of Matrixmentioning

confidence: 99%

Section: Characterization Of Porosity/permeability Of Matrixmentioning

confidence: 99%