DOWNHOLE SENSOR SYSTEM Russian patent published in 2019 - IPC E21B47/06 

FIELD: measuring equipment.

SUBSTANCE: invention relates to a downhole measuring system for measuring the pressure of a downhole fluid in a well, comprising a well tubular structure having an inner portion and located in a borehole having a wall and annulus formed between the well tubular structure and the wall of the borehole, a sensor unit that has a pressure unit sensor and is in contact with the well tubular structure, moreover, the pressure unit sensor is made with the possibility of measuring the pressure of the fluid in the inner part of the well tubular structure and/or in the annulus, wherein the sensor unit further comprises a power supply and a communication module, a downhole tool comprising a power supply and a communication module for communicating with the sensor unit, wherein the downhole tool further comprises a pressure tool sensor configured to measure the pressure of the fluid inside the well tubular structure substantially opposite the pressure unit sensor for comparison with the pressure measured by the pressure unit sensor. Further, the present invention relates to a measurement method, a calibration method and an insulation test method.

EFFECT: improvement of the downhole measurement system, which provides probing during the development of a reservoir in order to ensure a faster optimization of production.

15 cl, 7 dwg