RU82748U1 - PACKER WITH CABLE INPUT - Google Patents

Abstract

A packer, including a shaft, adapters connected to the shaft, brackets located at the ends of the shaft, mated to the adapters and having openings, a pipe fixed in brackets and mounted eccentrically relative to a shaft located inside the pipe, an anchor and a sealing element placed on the pipe, cable a channel located between the shaft and the pipe, with cable entries located in the holes of the brackets, and a cable whose cross-section corresponds to the eccentricity of the shaft and pipe, characterized in that the cable is placed is fixed in the cable channel, each end of which is connected to an electrical connector mounted on the corresponding bracket, and placed in a stabilizing chamber, made between the electrical connector and the cable entry and filled with a non-conductive fluid, while pressure compensators are installed in the brackets, for example, slide, stabilizing chambers .

Description

The utility model relates to the oil and gas industry and can be used in well installations for oil production.

Known Garipov packer containing a hollow barrel, a sealing element and a multifunctional channel located between the barrel and the sealing element and filled with filler, which houses the cable and / or instrumentation, RU No. 56939 U1, E21B 33/12, 2006.09.27.

A device for the simultaneous and separate operation of several layers in oil wells, including a sucker rod pump installed inside the pipe string, an electric centrifugal pump with a packer equipped with a channel for cable wiring, RU No. 68584 U1, Е21В 43/00, 2007.06.25.

Known packer with a mechanical anchor, including a shaft, sub connected to the shaft, an anchor with spring loaded crackers and control fingers placed in curly grooves, stops and a sealing element installed between the stops, RU No. 2208128 C1, ЕВВ 33/12, 2003.07.10 .

Known packer, including a shaft, sub connected to the shaft, two brackets located at the ends of the shaft, paired with sub and having longitudinal holes and side holes with

seals, a pipe fixed in brackets and mounted eccentrically with respect to a shaft located inside the pipe, a mechanical anchor placed on the pipe, with spring loaded crackers and control fingers placed in curly grooves made on the pipe, stops placed on the pipe, sealing element installed between the stops, a cable channel located between the shaft and the pipe, with cable entries located in the longitudinal and lateral holes of the brackets with gaskets, and a cable with a cross section, def eccentricity of the shaft and pipe, RU No. 77634 U1, E21B 33/12, 2008.10.27.

This technical solution was adopted as the "closest analogue" of this utility model.

The design of the “closest analogue” packer provides for the implementation of the cable channel necessary for the operation of a well installation with an electric centrifugal pump located below the packer, but after installing the electric centrifugal pump in the packer that carries the cable, it is necessary to seal the cable entries, which complicates the work with the packer and reduces the manufacturability of its installation .

The present utility model is based on the solution of a problem that allows us to ensure the convenience and reliability of the packer operation and increase the manufacturability of installing it above an electric centrifugal pump.

The technical result of this utility model is the implementation in the brackets of electrical connectors, stabilizing chambers and pressure compensators.

According to a utility model, this problem is solved due to the fact that the packer includes a shaft, adapters connected to the shaft, brackets located at the ends of the shaft, interfaced with the adapters and having holes, a pipe fixed in brackets and installed eccentrically relative to the shaft located inside the pipe, an anchor and a sealing element located on the pipe, a cable channel located between the shaft and the pipe, with cable entries located in the holes of the brackets, and a cable whose cross-section corresponds to the end shafts and shafts.

The cable is stationary in the cable channel, each end of which is connected to an electrical connector mounted on the corresponding bracket, and placed in a stabilizing chamber made between the electrical connector and the cable entry and filled with a non-conductive fluid, while the brackets are equipped with pressure compensators, for example, slide valves, stabilizing chambers.

The applicant has not identified sources containing information on a technical solution identical to the characteristics given in the formula

of a real utility model, this determines, in the applicant’s opinion, whether the utility model meets the criterion of “novelty”.

The essence of the utility model is illustrated by drawings, which depict:

figure 1 - Packer with cable entry (section).

figure 2 - Node And figure 1.

figure 3 - Node B in figure 1.

figure 4 - Section BB in figure 3.

Packer contains:

Val - 1.

Bracket (on shaft 1) - 2,

holes (in bracket 2) - 3.

Sub (paired with bracket 2) - 4.

Bracket (on shaft 1) - 5,

holes (in bracket 5) - 6.

Sub (paired with bracket 5) - 7.

Pipe (in brackets 2 and 5) - 8.

Anchor (on pipe 8) - 9.

Sealing element (on pipe 8) - 10.

Cable channel (between shaft 1 and pipe 8) - 11.

Cable (in channel 11) - 12.

End (cable 12) - 13.

The electric socket (on an arm 2) - 14,

cable entry (in bracket 2) - 15,

stabilizing chamber (between connector 14 and input 15) - 16,

filler plug (cameras 16) - 17.

Pressure compensator (in bracket 2) - 18.

End (cable 12) - 19.

Electrical connector (on bracket 5) - 20,

cable entry (in bracket 5) - 21,

the stabilizing chamber (between the connector 20 and the input 21) - 22,

filler plug (chambers 22) - 23.

Pressure compensator (in bracket 5) - 24.

The packer contains a shaft 1, sub 4 and 7, brackets 2 and 5, a pipe 8, an anchor 9, a sealing element 10, a cable channel 11 and a cable 12.

Sub 4 and 7 are connected to the shaft 1.

Brackets 2 and 5 are located at the ends of the shaft 1 and are interfaced with sub 4 and 7, respectively. In the brackets 2 and 5, holes 3 and 6 are made with seals (not shown) in which the cable entries 15 and 21 are located, respectively.

The pipe 8 is fixed in the brackets 2 and 5 and mounted eccentrically relative to the shaft 1. The shaft 1 is located inside the pipe 8.

Anchor 9 and sealing element 10 are installed on the pipe 8.

Between the shaft 1 and the pipe 8, a cable channel 11 is made with cable entries 15 and 21.

In the cable channel 11 is permanently placed cable 12.

The cross section of the cable 12 determines the eccentricity of the shaft 1 and pipe 8.

One end 13 of the cable 12 is connected to the electrical connector 14. The electrical connector 14 is mounted on the bracket 2 and placed in the stabilizing chamber 16. The stabilizing chamber 16 is formed between the electrical connector 14 and the cable entry 15. The stabilizing chamber 16 is equipped with a filler plug 17 for filling non-conductive therein liquids.

In the bracket 2, a slider pressure compensator 18 of the stabilizing chamber 16 is installed.

The other end 19 of the cable 12 is connected to the electrical connector 20. The electrical connector 20 is mounted on the bracket 5 and placed in the stabilizing chamber 22. The stabilizing chamber 22 is formed between the electrical connector 20 and the cable entry 21. The stabilizing chamber 22 is equipped with a filler plug 23 to fill it with a non-conductive fluid .

In the bracket 5, a slider pressure compensator 24 of the stabilizing chamber 22 is installed.

The installation of the packer in the well is as follows.

The packer is being prepared for the descent in the workshop. In the cable channel 11, the cable 12 is fixedly fixed, the ends 13 and 19 of which are connected to the electrical connectors 14 and 20, respectively. Through the filler plugs

17 and 23 are poured into the stabilizing chambers 16 and 22 non-conductive fluid, respectively. Non-conductive fluid, poured into the stabilizing chambers 16 and 22 of the brackets 2 and 5, protects the cable 12 from breakdown along the cores and does not allow the borehole fluid to come into contact with its seal.

The cable of the electric centrifugal pump (not shown) is connected to the electrical connector 14. The electrical connector 20 is connected to the cable going to the wellhead.

The packer, together with the electric centrifugal pump on the pipes, is lowered into the well.

As the packer descends into the well, the pressure compensator 18, and then the pressure compensator 24 compensate for the pressure of the static liquid column with pressure in the stabilizing chambers 16 and 22, protecting the electrical connectors 14 and 20 from its effects.

The packer is lowered when its anchor 9 interacts with the production casing to the place of its installation. Wedge anchor 9 on the walls of the production casing. With further descent of the pipes, the sealing element 10 is compressed by the amount of unloading of the weight of the pipes, ensuring the tightness of the packer.

An electric centrifugal pump is launched and oil is produced.

To remove the packer, you need to lift the pipes up and the packer automatically takes the transport position.

The stationary placement of the cable 12 in the packer increases the adaptability of its installation above the electric centrifugal pump.

Installation on the brackets 2 and 5 of the electrical connectors 14 and 20 provides ease of use for the packer.

The implementation in the brackets 2 and 5 of the stabilizing chambers 16 and 22 in the presence of pressure compensators 18 and 24 ensures the reliability of the packer.

The proposed packer with cable entry was manufactured industrially at the Izmeron plant and the pilot tests determine, according to the applicant, its compliance with the criterion of “industrial applicability”.

Claims (1)

A packer, including a shaft, adapters connected to the shaft, brackets located at the ends of the shaft, mated to the adapters and having openings, a pipe fixed in brackets and mounted eccentrically relative to a shaft located inside the pipe, an anchor and a sealing element placed on the pipe, cable a channel located between the shaft and the pipe, with cable entries located in the holes of the brackets, and a cable whose cross section corresponds to the eccentricity of the shaft and pipe, characterized in that the cable is placed is fixed in the cable channel, each end of which is connected to an electrical connector mounted on the corresponding bracket, and placed in a stabilizing chamber, made between the electrical connector and the cable entry and filled with a non-conductive fluid, while pressure compensators are installed in the brackets, for example, slide, stabilizing chambers .