ALL-PURPOSE PACKER FOR TUBING TESTING AND SURVEYING Russian patent published in 2006 - IPC E21B33/12 E21B47/00 

FIELD: oil and gas industry, particularly for well overhaul and maintenance.

SUBSTANCE: packer comprises body connected to conductor-and-support cable in which electric drive, reducing gear, screw pair, central rod, rubber gland, seat and movable bush are arranged. The central rod is connected with screw and pusher, the rubber gland is located between fixed and sliding flanges. The seat is formed on inner body surface and forms valve along with sealing rings. The movable bush is movably connected with inner body surface and provided with cone with dies freely put on the cone. Fluid flowmeter and gamma-ray logging sensor are arranged in upper packer part. The gamma-ray logging sensor is provided with coupler locator. Pressure sensor is arranged on central rod end under the packer. Liquid flowmeter and pressure sensor are located in liquid supply line, which injects liquid in the well. Technical parameter receiving and recording assembly is installed at well head and electrically linked with the pressure sensor, fluid flowmeter and gamma-ray logging sensor by conductor-and-support cable.

EFFECT: increased accuracy of tubing air-tightness and failure interval determination with the use of instruments, which provides real-time technical parameter recording, reduced costs and time of well repair.

5 dwg