SU1335680A1 - Arrangement for withdrawing liquid from hole bottom of gas well - Google Patents

Abstract

The invention relates to the field of gas industry and m. used in the operation of watering wells. The purpose of the invention is to increase the efficiency of fluid removal by preventing abrasive wear of capillary-porous material. The device contains a column lifting pipes (CPT) 1, in the lower part of which is a mechanism for lifting liquid. - The last one is made in the form of a capillary-porous material 2 immersed in a liquid. On CPT 1, a casing 4 is installed, forming a chamber 3 with it. In -the hollow elastic spiral element (E) 5 is placed. A valve 7 of periodic operation is placed in the annulus of the well 6. ZP-8 is located in CPT 1. Material 2 is placed in chamber 3 and interacts with O 5. Its lower part is connected with valve 7, and the upper communicates with CPT 1 in the installation zone u (L 00 with SP o: 00

Description

1335680

E 8. In this case, KPT 1 under E 8 has channels 9 for the passage of fluid. The liquid accumulated on the bottom rises through material 2 in the casing 4. After opening valve 7, it enters the E 5

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The invention relates to liquid removal devices and can be used in the gas industry in the operation of rim wells.

The purpose of the invention is to increase the efficiency of fluid removal in order to prevent the abrasive wear of a capillary-porous material.

The drawing shows a diagram of a device for removing fluid from a gas well bottom.

The device comprises a column of lifting pipes 1, in the lower part of which there is a liquid lifting mechanism, made in the form of a capillary-porous material 2 immersed in a liquid, and installed in the chamber 3 formed by the casing 4 and the column of lifting tubes 1. A chamber 3 is placed elastic spiral element 5 with the possibility of interaction with the capillary-porous material 2. The device also contains a periodic-action valve 7 installed in the annulus 6 and placed in the column of lifting pipes 1 eject Hopper element 8. The lower part of the hollow elastic spiral element 5 is connected to the valve 7, and the upper part is connected to the installation zone of the ejector element 8 with the column of lifting pipes 1, in which the channels 9 are filled to allow the liquid to pass under the ejector element.

The device works as follows.

The liquid accumulated on the bottomhole under the action of capillary impregnation rises through the capillary-porous material 2 placed in the casing 4. P1EI closed valve 7 elastic coiled element 5 is in a compressed state. After opening the valve, E 5 expands, presses onto the surface of material 2 and squeezes the liquid accumulated in it through channel 9 into KPT 1. The liquid is dispersed in zone E 8 and transported into the well. 1 il.

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7, the spiral element 5 enters the gas from the –targeted space of the spiral element 5 expands, presses onto the surface of the capillary-porous material 2 and squeezes the liquid accumulated in it through the channels 9 into the column of the lifting turbine 1. The expansion of the elastic spiral element 5 occurs due to the fact that the pressure in the annulus Bbmie than in the pipe, when the well through the pipes. The fluid that enters the lifting pipe string 1 is dispersed in the zone of the ejector element 8 and is discharged from the well. After closing the valve 7 due to the fact that the pressure in the zone between the ejector element 8 and the column of the lifting pipes 1, as a result of the ejector effect, is lower than in the zone of the channels 9, the spiral elastic element 5 is compressed and the process is repeated. The frequency of actuation of the valve 7 is selected depending on the rate at which the fluid enters the well bottom.

Thus, in the proposed device, the wear of the porous capillary material is completely prevented, which increases the durability and reliability of the device, and this prevents the reduction of the gas well flow rate due to accumulated liquid.

Claims (1)

Invention Formula A device for removing liquid from the bottom of a gas well, containing a column of lifting pipes, in the lower part of which there is a liquid lifting mechanism, made in the form of a capillary-porous material immersed in a liquid, characterized in that, in order to increase the efficiency of liquid removal 313 by preventing abrasive wear of the capillary-porous material, it is equipped with a casing mounted on the column of lifting pipes, a chamber formed therein, a hollow elastic spiral element placed in the chamber, a periodic ejector valve installed in the casing of the lifting pipes element, and the capillary-poris Editor M. Blanar Order 4027/28 Compiled by V. Boriskina Tehred V. KadarKorrektor M. Demchik Circulation 532 Subscription VNIISH State Committee of the USSR for inventions and discoveries 13035, Moscow, Zh-35, Raushsk nab., 4/5 Production of printing and printing company, Uzhgorod, st. Project, 4 This material is placed in the chamber on the riser column and is installed with the possibility of interaction with a hollow elastic spiral element, the lower part of which is connected to a batch valve, and the upper part communicates in the installation zone of the ejector element with the riser column in which the channels for the passage of fluid are made. under the ejector element.