METHOD FOR INTENSIFICATION OF OIL PRODUCTION Russian patent published in 2023 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: method for intensifying oil production in a well includes geophysical studies of formations located one above the other in the projection of a previously drilled well, and modelling the process of determining the need for primary and/or secondary penetration of reservoirs by a well for further development and obtaining efficient and cost-effective oil growth using criteria. The criteria used are the residual amount of oil in the corresponding formations, their corresponding oil saturation, permeability, response to external pressure, reservoir pressure, and product properties - chemical and fractional composition. After modelling the process of determining the need for primary and/or secondary penetration of formations by a well, additional studies are carried out on productivity, permeability and, oil saturation of the selected formations from wells that penetrated at least one of these formations and are located in the same oil area. In this case, by superimposing the calculated and the actual results, the data are adjusted and their subsequent modelling is carried out, after which the well is deepened with primary opening and/or secondary penetration of the formations. Based on the analysis of the properties of the product and the reservoir pressure of the corresponding formation, either single-lift or simultaneous-separate exploitation of the formations is carried out. Single-lift operation of formations is carried out when the formation fluids and formation pressures are compatible, allowing for the lifting of formation products by a common filter with one downhole pumping equipment, otherwise - simultaneous separate operation.

EFFECT: improved efficiency of opening and developing additional formations in a previously constructed well.

1 cl, 5 dwg, 1 tbl