Estimating minimum miscibility pressure and minimum oil swelling when displaced by associated petroleum gas for the conditions of an East Siberian field

Kobyashev A.V. avkobyashev@tnnc.rosneft.ru “Tyumen petroleum research center” LLC Tyumen
Pyatkov A.A. “Tyumen petroleum research center” LLC Tyumen
Zakharenko V.A. “Tyumen petroleum research center” LLC Tyumen
Gromova E.A. “Tyumen petroleum research center” LLC Tyumen
Dolgov I.A. “Verkhnechonskneftegaz” JSC Irkutsk
DOI: 10.24412/2076-6785-2021-4-35-38

Abstract
A case study of the Severo-Danilovskoye field in East Siberia is presented to describe an experimental measurement of miscibility between oil and injected gas. The minimum miscibility pressure and the minimum oil swelling by associated petroleum gas are estimated. The slim tube displacement efficiency as a function of gas enrichment with C2–C4 components is obtained. An approach to planning displacement conditions in a slim tube using correlations and an equation of state is presented.

Materials and methods
Materials: results of slim tube oil-gas displacement evaluation of the Severo-Danilovskoye field in East Siberia. Methods: estimation of the minimum miscibility pressure using Maklavani correlation and the state equation.

Keywords
minimum miscibility pressure, minimum oil swelling, equation of state, gas injection efficiency
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