OIL FORMATION OPERATION METHOD Russian patent published in 2020 - IPC E21B43/20 E21B47/06 G06F30/20 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular, to methods of investigation of wells and intensification of oil production during flooding of productive formation. Method includes investigation of productive formation drilled by injection and production wells by any of known grids, pumping of working agent into injection wells and withdrawal of formation product from production wells, measurement of bottomhole pressure in one selected from injection wells, measurement of pumping pressure in injection wells and extraction in production wells not covered by analysis, storing the obtained data and processing thereof to obtain a predictive model in the form of a software and hardware system (SHS) model for predicting operating modes of injecting a working fluid and producing formation products by injection and production wells, respectively. Measurement of bottomhole pressure in the selected injection well is performed after stopping working medium injection and establishing stable liquid level. At that bottomhole pressure is measured in other injection and production wells at invariable operation modes to determine influence of the selected well on bottomhole pressure in them. Investigations are carried out with consecutive stopping of each injection well after each stimulation of the formation to obtain data, based on the processing of which by dynamic calculations, dynamic isobars are plotted on the formation maps depending on the mutual influence of the injection and / or production wells on each other, these readings are additionally introduced into the SHS model to obtain the required parameters of each of the wells related to the formation characteristics change.

EFFECT: higher oil formation recovery factor due to consideration of formation pressure data in forecasting in each injection well and mutual influence of production and injection wells.

1 cl, 1 dwg