Optimization of criteria for selecting physical-chemical technologies of enhanced oil recovery (PhCh-EOR) methods for field conditions of "NK-Rosneft" PJSC based on field data analysis
UDC: 622.691.24
DOI: -
Authors:
KOBYASHEV ALEXANDER V.
1,
MAZAEV VLADIMIR V.1,
GUSEVA DARIA N.1,
MOROZOVSKY NIKITA A.2
1 TNNC, Tumen, Russia
2 NK-Rosneft, Moscow, Russia
Keywords: physical-chemical methods for oil recovery enhancement, reservoir geology and field conditions, applicability criteria, recommended and acceptable criteria values of various classes
Annotation:
"Tyumen Oil Research Center" LLC has developed a classification of compositions for physical-chemical methods of enhanced oil recovery (PhCh-EOR). The classification includes the main types of chemical compositions injected into the reservoir to enhance oil recovery and basic geological and field criteria that determine the optimal and acceptable areas of application for each class. According to this classification, the most common PhCh-EOR compositions and technologies associated with them are divided into classes: emulsion compounds, polymer compounds, dispersed compounds, thermo tropic compounds, sediment-forming compounds and oil-purification compounds. The classification also includes integrated technologies that include the sequential injection of various compounds. Based on an analysis of field experience accumulated by "NK-Rosneft" PJSC in various regions, criteria for the applicability of various classes of PhCh-EOR compounds have been developed. Optimal and acceptable values of geological and field criteria have been outlined within which the treatment of injection wells by chemical compounds ensures maximum additional oil production, combined with high success of the conducted measures. An algorithm for selecting the most appropriate technical solutions has been developed, which allowed increasing the volume and efficiency of work at oil fields.
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