A case study of the Severo-Danilovskoye field on experimental and numerical determination of miscibility parameters when justifying gas injection-Reference-Cited by-同舟云学术

A case study of the Severo-Danilovskoye field on experimental and numerical determination of miscibility parameters when justifying gas injection

Published:2022-12-04 Issue:5 Volume: Page:75-89
ISSN:0445-0108
Container-title:Oil and Gas Studies
language:
Short-container-title:Izvestiâ vysših učebnyh zavedenij. Neftʹ i gaz

Author:

Kobyashev A. V.¹

Affiliation:

1. Tyumen Petroleum Scientific Center LLC

Abstract

Miscibility largely determines the performance of gas injection. Miscible displacement allows achieving maximum effect. The minimum miscibility pressure (MMP) is a key parameter, which is determined when justifying a gas injection project. For the conditions of East Siberian reservoirs, the accuracy of correlation equations is 10-50 %, and A. M. Maklavani, H. M. Sebastian, and M. Dong equations demonstrate the most accurate values. The equation of state matched to the results of routine studies evaluates the MMP with an error of up to 30 %. Additional data from special studies (swell test) increased the estimating accuracy by up to 10 %. An express laboratory method for measuring the miscibility parameter (a method of vanishing interfacial tension) showed high accuracy of MMP estimate. The method also allows describing the process of changing the interfacial tension with increasing pressure or changing the gas composition, and complements the process of adjusting the equation of state when setting up a slim tube experiment.

Publisher

Industrial University of Tyumen

Subject

General Medicine

Reference20 articles.

1. Stepanova, G. S. (2006). Gazovye i vodogazovye metody vozdeystviya na neftyanye plasty. Moscow, Gazoil press Publ., 198 p. (In Russian).

2. Lake, L. W. (1989). Enhanced oil recovery. New Jersey, Printice Hall, 550 p. (In English).

3. Pedersen, K. S., Christensen, P. L., & Shaikh, J. A. (2006). Phase behavior of petroleum reservoir fluid. Boca Raton, 422 p. (In English). DOI: 10.1201/9781420018257

4. Petrakov, A. M., Egorov, Yu. A., & Nenartovich, T. L. (2011). On the reliability of the experimental determination of oil displacement coefficients by gas and water-gas stimulation methods. Oil Industry, (9), pp. 100-102. (In Russian).

5. Polishchuk, A. M., Khlebnikov, V. N., & Gubanov, V. B. (2014). Usage of a formation slim tubes for physical modeling of oil displacement processes by miscible agents. Part 1. Methodology of the experiment. Oilfield Engineering, (5), pp. 19-24. (In Russian).