A hybrid stability analysis bypassing method for compositional simulation

Review Engineering, Petroleum

Compositional Reservoir Simulation: A Review

Larry C. Young

Summary: This article introduces the uses of compositional reservoir models, with a focus on isothermal compositional models based on an equation of state. The article describes the differential-algebraic equation system and the physical nature of the parameters, comparing model formulations and computational features. The article highlights the importance of correct physics and chemistry understanding in numerical calculations and identifies areas for further research.

SPE JOURNAL (2022)

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Article Energy & Fuels

An advanced general dominant eigenvalue method of accelerating successive substitution during flash calculation for compositional reservoir model

Xiaoman Wang et al.

Summary: Efficiency and accuracy of phase equilibrium calculations are crucial in compositional reservoir models. This paper proposes a modified form of the general dominant eigenvalue method (GDEM) to improve its performance in the near-critical region. Numerical tests show that the modified GDEM has similar stability to the successive substitution method (SSM) and significantly higher calculation efficiency.

ADVANCES IN GEO-ENERGY RESEARCH (2022)

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Article Energy & Fuels

Thermodynamically-consistent flash calculation in energy industry: From iterative schemes to a unified thermodynamics-informed neural network

Tao Zhang et al.

Summary: This paper presents a thermodynamically-consistent flash calculation scheme for phase transition heat and mass transfer mechanisms in multi-component multiphase fluid flows. It also proposes a thermodynamics-informed neural network framework to accelerate flash calculation. The study provides suggestions for optimizing production in the energy industry.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2022)

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Article Energy & Fuels

Phase equilibrium in the hydrogen energy chain

Tao Zhang et al.

Summary: This paper provides a comprehensive review of the current state of hydrogen phase equilibrium approaches and proposes an advanced calculation scheme based on the first and second laws of thermodynamics for fluid mixtures containing hydrogen. The effectiveness and robustness of the proposed phase equilibrium calculation scheme are demonstrated through reasonable predictions of phase transitions in various engineering scenarios during hydrogen production and storage processes.

FUEL (2022)

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Article Computer Science, Interdisciplinary Applications