«Oilfield engineering»

Application of physical and chemical methods to increase oil recovery at injection wells according to refined results of filtration and capacity properties through hydrodynamic studies

UDC: 622.276.6
DOI: 10.33285/0207-2351-2023-10(658)-35-45

Authors:

¹ LUKOIL-Engineering Limited KogalymNIPIneft Branch Office in Tyumen, Tyumen, Russia

Keywords: injectivity profile alignment, physical and chemical methods of enhanced oil recovery, reservoir properties, hydraulic conductivity, piezoconductivity, permeability, underground hydraulic testing

Annotation:

Many fields in Western Siberia are at stages 3 and 4 and have a high degree of watering of the producing well stock. For the conditions of the objects of such fields, the issues of applying effective development technologies in general are relevant, among which the main direction of development is the large-scale use of physical and chemical stimulation of the reservoir, in particular. Among other tasks, the objective need to increase the coverage of the less permeable part of the reservoir by the impact during progressive watering is to limit the volume of water filtration in the washed zones, which should lead to the redistribution of filtration flows along the reservoir section. These tasks are solved by using technologies for leveling the injectivity profile of the formation, which makes it possible to calculate and subsequently apply the optimal volumes of water-insulating compositions, taking into account the volumes attributable to remote zones of the formation. To obtain the maximum effect from any method of enhanced oil recovery, it is necessary to comply with a set of requirements, criteria for both candidate wells and the stimulation technology impacting.

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