Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock (Russian)

Grushnikov, Ilya

doi:10.2118/197005-ru

SPE Russian Petroleum Technology Conference 2019

DOI: 10.2118/197005-ru

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Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock (Russian)

Ilya Grushnikov¹

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2023

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Cited by 2 publications

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Optimising the transition from CO2 EOR-EGR towards CCS for a mature oil and gas reservoir

Rakotondrazaka,

Johnson,

et al. 2023

APPEA J.

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This study evaluates carbon dioxide enhanced oil recovery (CO2 EOR) for enhanced oil recovery (EOR), enhanced gas recovery (EGR) and carbon capture and storage (CCS) purposes in the mature Mereenie Oil and Gas Field (‘Mereenie’). Mereenie consists of a rim oil and gas cap reservoir with low aquifer activity. We evaluate the microscopic and macroscopic displacement efficiencies of CO2 EOR techniques after determining the minimum miscibility pressure of the CO2 and reservoir oil system. Investigations on EOR, EGR and CCS are then conducted on a sector model containing the main pay zones. The CO2 flood, water alternating gas (CO2 WAG) and Huff ‘n’ Puff methods are evaluated within three strategies: unstructured well placement, five-spot pattern configuration and gravity-assisted flood. The sector model shows performance of an immiscible process in oil and gas recovery and CO2 storage potential. The CO2 flood is efficient in oil recovery but less efficient in CO2 utilisation, making it a good option for a half oil recovery–half CO2 storage objective. The CO2 Huff ‘n’ Puff is more efficient for oil recovery at early stages of operation, and also very efficient for gas recovery. The CO2 Huff ‘n’ Puff technique is not a good option for the CO2 storage objective. The CO2 WAG could be a good technique for oil recovery and CO2 storage with proper CO2 slug size and WAG ratio. The five-spot pattern configuration enhances sweep efficiency. The gravity-assisted flood strategy can be appropriate for the rim oil reservoir with gas cap in Mereenie.

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Optimising the transition from CO2 EOR-EGR towards CCS for a mature oil and gas reservoir

Rakotondrazaka,

Johnson,

et al. 2023

APPEA J.

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Method of Determination of Thermodynamic and Filtration Parameters for Hydrodynamic Compositional Models

Gilmanov

Mikhaylin

Shevelev

2022

TSU Herald. Phys Math Model. Oil, Gas, Energy

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The calculation of phase behavior is important for choosing a rational mode of development of oil and gas fields. However, solving equations of state and material balance by traditional methods is associated with difficulties: Cardano’s formula allows finding only the roots of a cubic equation, the dichotomy method requires the selection of a segment on which there is only one root. Newton’s iterative method allows finding only one root under given conditions. Another important problem in hydrodynamic simulation is the uncertainty of the relative phase permeability of oil during three-phase filtration. It is proposed for the first time to use the algorithm of sequential division of Euclidean polynomials and Sturm’s theorem to calculate phase behavior. The aim of the work is to develop a methodology for calculating phase behavior and determining the area of increased uncertainty of relative phase permeability of oil. This area is defined as a set of phase saturation values at which relative phase permeabilities of oil according to Stone 1st and 2d models differ by more than 10%. The proposed methodology makes it possible to predict areas of metastable states. The possibility of calculating the roots of material balance equations that do not have physical meaning is excluded. For a model three-phase system, an area of increased uncertainty of relative phase permeability of oil is determined. It is shown that it is possible to determine all real roots of the equations. The proposed methodology makes it possible to refine forecast calculations for gas condensate fields.

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Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock (Russian)

Cited by 2 publications

References 2 publications

Optimising the transition from CO2 EOR-EGR towards CCS for a mature oil and gas reservoir

Optimising the transition from CO2 EOR-EGR towards CCS for a mature oil and gas reservoir

Method of Determination of Thermodynamic and Filtration Parameters for Hydrodynamic Compositional Models

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