«Geology, geophysics and development of oil and gas fields»

Integration of physical-chemical and hydrodynamic methods for oil recovery enhancement

UDC: 622.276.1/.4"712.8"+622.276.6+622.276.43
DOI: -

Authors:

¹ LUKOIL-Engineering LLC, Tyumen, Russia

Keywords: development of oil fields, oil recovery enhancement, geological-technical measures, physical-chemical methods of oil recovery enhancement, hydrodynamic methods of enhanced oil recovery, non-stationary flooding, injectivity profile equalization

Annotation:

The authors of the article analyze the effectiveness of physical-chemical methods that are used to enhance oil recovery, depending on the implementation of the hydrodynamic methods program (non-stationary water-flooding) at one of the field facilities in the West Siberian region. The novelty and originality of the research lie in the concept of selecting the analyzed data and versatile monitoring of technological efficiency changes of physical-chemical methods used to enhance oil recovery. The injection wells sampling under physical-chemical effect was carried out according to the principle of the closest environment to the site of non-stationary flooding: wells in which hydrodynamic effects were directly carried out as well as wells adjacent to the site of non-stationary flooding and treated with flow-deflecting compounds with a common reacting potential were considered. The efficiency increase of the sites development in case of the joint application of these methods has been revealed. The most effective scheme of implementation of enhanced oil recovery physical-chemical methods in the fields with non-stationary water-flooding has been determined. It is recommended to implement two geological-technical measures according to the scheme of simultaneous exposure with physical-chemical methods of enhanced oil recovery beyond the boundaries of the non-stationary water-flooding site. Such approach is applicable to "mature" fields in the late stages of development in order to involve residual oil reserves in the development process.

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