FACILITY FOR TREATMENT AND SURVEY OF WELLS Russian patent published in 2009 - IPC F04F5/54 E21B47/00 

Abstract RU 2362914 C2

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas producing industry. The facility consists of funnel 2 with tail piece 3, of packer 4 with central channel 5 and jet pump 6 assembled on flow string 1 from below upward. In case 7 of pump 6 there are coaxially installed active nozzle 8 and chamber of mixing 9, also there is made channel 10 of active medium supply, channel 11 of supply of medium pumped off the well and central stepped through channel 12 with seat 13. Back valve 29 is installed in channel 11. Blocking insertion 16 with upper 17 and lower 18 side openings is assembled on seat 13 on friction sealing elements 15; the insertion is designed to perform limited displacement from above. Stepped through channel 19 is made in insertion 16, wherein between openings 17 and 18 on seat 20 there is foreseen installation of sealing unit 21 with axial channel 22 for logging cable 23 and for a depressing insertion. Receiver-converter 24 of physic fields is assembled on cable 23 below unit 21. Unit 21 and the depressing insertion are installed in insertion 16 on friction sealing elements 28. At end low position of insertion 16 opening 17 is conjugated with channel 10, while opening 18 is conjugated with channel 11. An output of pump 6 is connected to annular space 30 of the well. Friction force between functional insertion and insertion 16 exceeds friction force between insertion 16 and case 7 of the pump.

EFFECT: object of invention is to increase efficiency and reliability of facility.

2 dwg

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RU 2 362 914 C2

Authors

Rodionov Vjacheslav Ivanovich

Serebrennikov Anton Valer'Evich

Demjanenko Nikolaj Aleksandrovich

Dates

2009-07-27Published

2007-08-31Filed