An integrated model with stable numerical methods for fractured underground gas storage

Article Energy & Fuels

Interpretation of temperature transient data from coupled reservoir and wellbore model for single phase fluids

Cihan Alan et al.

Summary: This paper presents a coupled reservoir/wellbore model that accounts for various effects and compares it with a commercial simulator. By using synthetic data and history-matching field applications, diagnostic characteristics of temperature transients can be identified, along with tracking model parameter sensitivities. The study finds that temperature transients can better reflect the properties of the near wellbore region.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

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Article Energy & Fuels

3D hybrid coupled dual continuum and discrete fracture model for simulation of CO2 injection into stimulated coal reservoirs with parallel implementation

Min Chen et al.

Summary: This work presents the development of a 3D hybrid coupled dual continuum and discrete fracture model for simulating coupled flow, reaction and deformation processes relevant to fractured reservoirs with multiscale fracture system, e.g., coal and shale, efficiently and accurately. The hybrid model combines the dual continuum approach and the discrete fracture approach, and a combination of different types of elements is used for spatial discretization. The coupling between the two models is achieved via the principle of su-perposition. A hybrid MPI/ OpenMP parallel scheme is implemented to reduce computational time. The results demonstrate the capabilities of the model in capturing the effects of multiscale fracture system and their coupled behaviour during CO2 injection and methane recovery from coal reservoirs.

INTERNATIONAL JOURNAL OF COAL GEOLOGY (2022)

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Review Energy & Fuels

A review of mathematical models for geothermal wellbore simulation

R. A. Tonkin et al.

Summary: The literature on wellbore simulators for geothermal wells is confusing due to inconsistencies in conservation equations used. This study provides a comprehensive review and comparison of conservation equations for transient and steady multiphase flow. Differences in assumptions may impact simulation results under certain conditions.

GEOTHERMICS (2021)

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Article Energy & Fuels

Modeling transient flow behavior with the high velocity non-Darcy effect in composite naturally fractured-homogeneous gas reservoirs

Ren-Shi Nie et al.

Summary: A composite non-Darcy flow model was developed to investigate the pressure transient behavior in gas reservoirs, revealing the significant influence of empirical constant on the pressure behavior in the non-Darcy region. Three reduced models of the proposed model were also analyzed. The field application indicated excellent agreement between measured and simulated pressure responses.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2021)

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Article Energy & Fuels