SYSTEM FOR LONG-TERM DISTRIBUTED MONITORING OF THE INFLOW PROFILE IN A HORIZONTAL WELL EQUIPPED WITH AN ECP Russian patent published in 2019 - IPC E21B47/103 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular to system, device and method for measurement and control of operating parameters of horizontal oil wells equipped with electric centrifugal pump (ECP). System of long-term distributed monitoring of inflow profile in horizontal well includes underground equipment consisting at least of electric centrifugal pump (ECP), installed in cavity of tubing string, on horizontal section of which perforations are made; a fiber-optic distributed cable-temperature sensor laid along the tubing string, and a ground-based analysis and processing station, to which a fiber-optic distributed sensor cable is connected. At that, the ground-based analysis and processing station comprises at least in-series connected: a unit for determining the background temperature level on the horizontal section of the tubing string at idle ECP (UDBT), unit for determination of thermal anomalies (δ) of current temperature (T_tech) on horizontal section, which make at least 0.2 °C while operating ECP (UDT), a unit for selection of heat flux processing and determining zones (USPDHF), a unit for determination of normalized heat transfer and discharge of flow (UDNHDF).

EFFECT: system of long-term distributed monitoring of inflow profile is proposed.

12 cl, 3 dwg, 1 tbl