SU1413298A1 - Well operation pump - Google Patents

Abstract

The invention allows to reduce the size and simplify the design of the pump. On the casing string 1 with a packer.m (P) 2, perforations 3 are made in the bottom part. 7, placed under P 2 and fitted with a check valve 8. Valve 8 prevents the backflow of fluid from chamber 5 into column 1. I Il.

Description

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The invention relates to a pump engineering design, in particular, to the construction of a pneumatic pump.

The purpose of the invention is to reduce the size and simplify the design.

The drawing shows a pump diagram for well operation.

A well operation pump contains a casing 1 with a packer 2 and perforation 3 in its lower part, concentrically mounted in column 1, a lifting pipe 4 and connected to the last replacement chamber 5, located under the packer 2, and the replacement chamber 5 is equipped with a gas supply and the casing 1 is equipped with a gas discharge channel 6 and 7, the last of said and channel 7 is placed under the packer 2 and equipped with a check valve 8, and the casing string 1 is connected to the lifting pipe 4 by means of the gas exhaust channel 7.

The lower part of the replacement chamber 5 is provided with a check valve 9.

Pump for well operation works as follows.

During the accumulation period, fluid from the reservoir enters through the perforation 3 into the casing 1 and through the receiving check valve 9 into the replacement chamber 5. At the same time, ii gas free with the liquid is supplied to the casing 1 through the gas outlet - 1III dripped 7 with a check valve 8 and a lift

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capacitive pipe 4 is etched into the discharge line.

During the period of liquid pushing to the surface, the compressed gas (working agent) enters the casing 1 and through the gas supply channel 6 into the replacement chamber 5 and forces the fluid accumulated in the replacement chamber 5 to the surface. In this case, the check valve 8 located in the channel 7 prevents the flow of fluid from the replacement chamber 5 into the casing 1.

Further, the processes of accumulation of fluid in the replacement chamber and forcing it to the surface are repeated.

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Claims (1)

Invention Formula A well operation pump containing a casing with a packer and a perforation in its lower part, a riser installed concentrically in the column and connected to the last replacement chamber, located under the packer, the replacement chamber provided with a gas supply pipe, and the casing string channels, the last of the said channels is placed under the packer, characterized in that, in order to reduce the size and simplify the design, the gas extraction channel is equipped with a check valve and the casing column is connected and a lift pipe through the gas outlet channel present.