ADAPTED MULTI-PARAMETER MEASURING SYSTEM BASED ON A FIBER LATTICE AND A METHOD FOR ITS APPLICATION Russian patent published in 2021 - IPC E21B47/06 E21B47/12 

FIELD: oil production.

SUBSTANCE: multi-parameter near-bore measuring system based on a fiber lattice and a method for its application are claimed. The system includes a drilling tool, meter and data transmitter. The drilling tool includes a drill bit, drill rod and drill phase shifter. The meter includes a force-measuring section and a photoelectric rotating joint. The data transmitter includes an optical fiber and a signal processor. The force measuring section is divided into a front with a groove and a rear with a rib. The slot and the rib are respectively equipped with a fiber grating sensor together. The optical fiber runs up to the photoelectric rotating joint along the inside of the drill rod to transmit spectral information to the signal processor. While using a measuring system to relieve downhole pressure, the drilling tool provides drilling with a drill bit. The meter measures torque, rotational speed, feed force while drilling and depth of the drill bit in the borehole, these data are transmitted to the signal processor. While drilling with a drill rod, such rods are connected in series to perform measurements while drilling.

EFFECT: the invention improves the quality of measurements in the process of multiparameter measurement in deep wells.

7 cl, 9 dwg