DEVICE FOR DELIVERING INSTRUMENTS AND EQUIPMENT TO CASED WELLS Russian patent published in 2021 - IPC E21B23/14 

FIELD: geophysical instruments.

SUBSTANCE: invention relates to a device for delivering geophysical instruments and equipment to horizontal sections of cased wells in the presence of significant local narrowing of the inner section of the wellbore and the need to work through a lubricator. The device includes an electronic unit, wheel sections equipped with drives that provide pressing and rotation of the driving wheels located on the wedging supports. The electronic unit provides control of the drives. The unit includes a telemetry system with a modem that provides communication with a ground logging system. The unit is equipped with a program for controlling the movement of the delivery device and recording the parameters of accelerometers, motion sensors, tension on the cable head and temperature. The wedge supports are equipped with diameter measurement sensors and rack and pinion gears connecting them to the shock absorbers. Clamping drives are equipped with clamping force sensors. The drives of each section are located coaxially. At least one of the drives is made with a through hole. The sections are equipped with electronic circuits, including controllers for controlling drives, as well as for working with sensors of diameter and clamping force. A fast telemetry system is introduced into the electronics unit to provide real-time communication between the electronics unit and other electronic components.

EFFECT: technical result is to ensure trouble-free passage of the device in a cased well.

5 cl, 4 dwg