Mechanisms of Mass Exchange Between Light Oiland Petroleum Gas in Low-Permeability Reservoir Development Process

Mechanisms of Mass Exchange Between Light Oiland Petroleum Gas in Low-Permeability Reservoir Development Process

Gasoline

Gas permeability

Associated gas

Low permeability reservoirs

Petroleum reservoir engineering

Gases

Solubility

Gas oils

Petroleum chemistry

Liquefied gases

It is shown that associated petroleum gas (APG) and the product of intrastratal transformation of air (by high-pressure air injection technology) are suitable for oil displacement from low-permeability, high-temperature light oil reservoirs. It was found that APG and air are effective gaseous agents miscible with oil, which are similar in oil-displacing properties. The minimum miscibility pressure (MMP) determination data are presented for an Upper Jurassic oil-APG system. The miscibility in the oil-APG system was achieved by the multicontact mechanism of interaction between oil and enriched gas. A new method is proposed for graphical determination of MMP as a function of gas breakthrough due to pressure, and a method for enhancing gas impact efficiency and for achieving miscibility at a pressure below the MMP, which consists in injection of a liquefied gas prefringe or a wide fraction of hydrocarbons, is validated. 2018, Springer Science+Business Media, LLC, part of Springer Nature.

457-466

4

54

Chemistry and Technology of Fuels and Oils

2018

Gushchinu, P.A.

Cheremisin, A.N.

Glavnov, N.G.

Zobort, P.M.

Svarovskaya, N.A.

Khlebnikov, V.N.

journalArticle

93092

10.1007/s10553-018-0947-2