Characterization of non-Darcy multiphase flow in petroleum bearing formation. Final report

Evans, R.D.; Civan, Faruk

doi:10.2172/10142377

Cited by 56 publications

(36 citation statements)

References 2 publications

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“…The gas flow in hydraulic fractures towards the well should be the high velocity non-Darcy flow (Evans and Civan, 1994;Moridis et al, 2010;Freeman et al, 2011). The non-Darcy flow should be described by the Forchheimer modification to Darcy's law given below,…”

Section: Non-darcy Flowmentioning

confidence: 99%

Numerical simulation of gas and water flow mechanism in hydraulically fractured shale gas reservoirs

Shen

et al. 2016

Journal of Natural Gas Science and Engineering

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a b s t r a c tThe problem of the fracturing water remaining in hydraulically fractured shale gas reservoirs has become one of the major concerns in terms of gas productivity and operating costs. The fracturing water retention is influenced by reservoir properties and production parameters, such as matrix porosity and permeability, fracture porosity and permeability, Langmuir pressure and volume, diffusion coefficient, shut-in time, drawdowns and injection rate. In this study, a horizontal well with six-stage hydraulicfracturing treatment was constructed to understand the water retention and gas production performance in shale gas reservoirs. Gas diffusion, gas adsorption/desorption and Darcy flow as well as non-Darcy flow were considered in this model. The process of water retention and gas production performance was analyzed, and the effects of reservoir and production properties on this problem were performed. The results show that only 34% of the fracturing water can flow back to the surface, most of which remains in shale formations to interfere with gas production. The increasing of matrix porosity, fracture porosity, Langmuir pressure and drawdowns will reduce water retention while water retention in shale matrix will increase with the increasing of matrix permeability and Langmuir volume, and consequently impact gas production. But the trapped water and gas rate increase with the higher fracture permeability. Furthermore, the diffusion coefficient, shut-in time and injection rate do not have a significant effect on water retention and gas productivity. These results can provide insights into a better understanding of gas and water flow in the shale gas reservoirs and the effects of reservoir and production parameters on water retention and gas production.

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Section: Non-darcy Flowmentioning

confidence: 99%

Numerical simulation of gas and water flow mechanism in hydraulically fractured shale gas reservoirs

Shen

et al. 2016

Journal of Natural Gas Science and Engineering

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“…In this study, Evans and Civan's (1994) empirical correlation is used to decide the Forchheimer β coefficient.…”

Section: Non-darcy Flowmentioning

confidence: 99%

Application of type curves for pressure transient analysis of multiple fractured horizontal wells in shale gas reservoirs

Kim

Park

Lee

2016

IJOGCT

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Pressure transient analysis for shale gas reservoirs requires comprehensive understanding related to nonlinear gas flow process as well as hydraulic fracture properties. A major purpose of this study is to demonstrate how this issue is addressed by pressure transient analysis for multiple fractured horizontal wells in shale gas reservoirs. Extensive numerical simulations were conducted to model transient pressure behaviour of a fractured horizontal well and the results were applied to well test analysis in shale gas reservoirs. This paper presents a comprehensive reservoir simulation model to investigate the characteristics of pressure transient responses under the influences of hydraulic fracture properties and nonlinear gas flow mechanism. The numerical simulations provided various type curves for transient pressure responses in fractured horizontal production wells. Results from type-curve matching for synthetic pressure data demonstrate that the conventional analysis approach may still be applicable for analysis of shale gas reservoirs.

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“…The Ward correlation [12] fails to give a reasonable estimate of F, whereas the models of Macdonald et al [11] (RMS = 28.7%) and Ergun [10] (RMS = 26.7%) agree well with the numerical results for high porosities, but underestimate F for lower porosities. The latter two models are based on the Ergun's theory and the parameters are empirically determined [60].…”

Section: Permeability and Dupuit-forchheimer Coefficientmentioning

confidence: 99%

Pore-level engineering of macroporous media for increased performance of solar-driven thermochemical fuel processing

Suter

Steinfeld

Haussener

2014

International Journal of Heat and Mass Transfer

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a b s t r a c tThe performance of high-temperature solar reactors incorporating porous ceramic materials that serve as radiative absorbers and chemical reaction sites can be improved significantly by tailoring their pore structure. We investigated the changes in their effective heat and mass transport properties with increasing mass loading of porous ceramics fabricated by the replica method. We applied a methodology consisting of the experimental characterization of the structure via 3D tomographic techniques coupled to pore-level direct numerical simulations for the determination of the effective transport properties. This approach was extended by using digital image processing on the structure data to allow for artificial changes in the morphological characteristics -corresponding to actual variations in the fabrication process. We derived transport correlations of porous ceria foam with varying mass loading, i.e. reticulate to dense foams with porosity from 0.85 to 0.45. We observed that the correlations proposed in literature do not accurately describe the behavior of low-porosity foams. The numerical findings of this study provide guidance for pore-level engineering of materials used in solar reactors and other high-temperature heat and mass transfer applications.

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Characterization of non-Darcy multiphase flow in petroleum bearing formation. Final report

Cited by 56 publications

References 2 publications

Numerical simulation of gas and water flow mechanism in hydraulically fractured shale gas reservoirs

Numerical simulation of gas and water flow mechanism in hydraulically fractured shale gas reservoirs

Application of type curves for pressure transient analysis of multiple fractured horizontal wells in shale gas reservoirs

Pore-level engineering of macroporous media for increased performance of solar-driven thermochemical fuel processing

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