SU690164A1 - Apparatus for withdrawing liquid from gas-bearing formation face zone - Google Patents

Description

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The invention relates to the gas industry and is used in the intensification of gas production .- .: /. , ; - /. :

An adequate bottomhole cleaning device with a pneumatic method containing a diaphragm containing a membrane, a packer and a HOSTOK, which is equipped with a branch pipe that hydraulically connects the underpacker zone with a sub-pakierny one and installed a check valve I}. .. -: - -; ; :,

The disadvantage of this device: is the effect of the removal of liquid from the bottomhole zone of poorly cemented rocks.

A liquid removal device is known that uses: the phenomenon of electro-osmosis) for drying quarries, controlling the advancement of fluid in a skbaikin, including a column of pipes and two positive and negative electrodes, and a source of electrical current that causes water to move in the rock 2.

The aim of the invention is to increase the efficiency of the removal process by continuously removing liquid from the formation.

The goal is achieved by the fact that in order to remove water from the near-wellbore zone, the gas around the reservoir is equipped with two nozzles. Installed telescopically in. a column of conventional compressor tubes, electrically insulated and connected: with the positive and negative electrodes located respectively in the upper and lower intervals of the reservoir.

The drawing shows a longitudinal section of a device for removing fluid from the near-bottom zone of a gas formation.

The device includes a column of pump-compressor pipes 1 and telescopically installed pipes 2 and 3, separated from each other by insulators 4. Processed contacts 5 are installed on pipe 3, and contacts 6 are connected to pipe 2 and pipes 2 and 3 are connected to a direct current source : pipe 2c negative positive axis, pipe 3 with a positive one through pipe 7, Pipe 2 telescopic connection has a load 8 at the lower end, the outer diameter of which is several times larger than the diameter of pipe 3. Cargo 8

connected to the cable 9, and on the pipe 1, the saddle 10 is reinforced for landing the device in squiggle. The outer tube 11 — the casing column — is divided by insulator 12 into two isolated Parts.

The device works as follows.

The device is lowered into the well on a cable before the projection on the pipe 7 is seated in the saddle 10. After that the cable is weakened and under the action of the load 8 the telescopically connected pipes 2 and 3 are lowered and alternately out of the outer pipes sprung electrodes 5 and b. The copper tips 13 located at the ends of the electrodes 5 and 6 are in contact with the casing at two levels above and below the insulator 12, and the electrode 5 connected through pipe 3 with prO-o. the common pole of the DC source is located above the insulator 12, and the electrode b, connected through 2 to the negative pole of the DC current, is below the insulator 12.

: After switching on the direct current source, the potential difference through the walls of the TpyiSbii wall is transmitted to the reservoir, in which an electrical field is induced: the field, the signal lines of which are directed, from the negative pole to the negative pole.

Lifting of the device is carried out with the help of a cable 9.0. Under the action of the tension of the cable, the telescopic connection is assembled, i.e. ; nozzles 2, 3, 7 are included;

hectare, at the same time, spring-loaded contacts 5 and b are also removed, with further tension of the cable 9, the whole device is lifted to the surface.

This design of the device ensures its operation at great depths, is distinguished by its ease and simplicity, simplifies the process of operating the device, and the main thing is that it improves the efficiency of the process of removing water from the bottomhole zone of a gas formation.

Claims (2)

1. Author's certificate number 281327 Cl. E 21, 43/00, 1970. 2. Express information, Oil and gas industry, 4, 1971, 18-23 (prototype). YU