WELL RESEARCH METHOD IN STATIONARY AND NON-STATIONARY MODES OF OPERATION Russian patent published in 2021 - IPC E21B43/20 E21B49/08 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry and can be used in the development of an oil reservoir, represented by a fractured-pore-type reservoir, as well as in conducting gas-dynamic and hydrodynamic studies of wells with vertical, sub-horizontal and horizontal wellbore ends by means of continuous diagnostics and monitoring of the volumetric amount of fluid flows. To improve the accuracy of determining the volume of fluid entering the well from each wellbore and/or from each fracture per unit of time in stationary and non-stationary modes of operation with the possibility of constructing inflow profiles along the wellbore in real time during monitoring, proppant with deposited on it with indicator particles (indicators), an oil-soluble-water-soluble polymer coated on a proppant with a thickness of 20 to 200 mcm is used as an indicator, with particles having ferromagnetic properties ranging in size from 500 nm to 10 mcm, and various optical properties in the ultraviolet, infrared and visible ranges, which, after being freed from the proppant, are captured by a magnetic field on a magnetic separator installed at the wellhead, and packed in individual containers marked with the date, time of their capture, as well as additional well performance parameters, such as wellhead pressure and well flow rate.

EFFECT: improvement of an oil reservoir development.

1 cl, 3 dwg