SU618529A1 - Valve - Google Patents

Description

one

The invention relates to the oil and gas industry, namely, valves for underground well equipment.

Known check and drain valves used in underground equipment wells, which are used in the operation of centrifugal pumps 1.

However, the valves do not ensure the reliability and efficiency of the equipment, since they require lifting the equipment and replacing the valve when the drain valve opens prematurely.

Also known is a valve for underground equipment of wells, including a tubular body with radial channels, a branch pipe with radial channels that is plugged in the lower part, mounted inside the body, a saddle, a gap and a stop 2.

However, the known valve does not provide reliable operation in the underground equipment of the wells, since it does not allow for direct flushing under pressure, as well as creating pressure in the tubing during back flushing. In addition, this valve is limited when used in production columns of less than 5.

The aim of the invention is to improve the reliability of the valve in the underground equipment of wells.

The goal is achieved by the fact that the outer surface of the upper part of the nozzle and, accordingly, the inner surface of the body are tapered, while the lower part of the nozzle has protrusions on the outer surface, and the saddle is installed under the nozzle.

The drawing shows the proposed valve.

The valve consists of a tubular body 1 with radial channels 2, plugged in the lower part of the nozzle 3 with radial channels 4, installed inside the body of the saddle 5, ball 6 and limiter 7.

The outer surface of the upper part of the nozzle and, accordingly, the inner surface of the body are made conical, the lower part of the nozzle on the outer surface has protrusions 8, and the saddle 5 is installed under the nozzle 3.

Claims (2)

The valve operates as follows. In order to carry out a direct rinse, a back pressure of the liquid is created. The ball 6 closes the channel in the pipe 3. Under the action of the pressure, the pipe moves to the seat 5 against the stop. The tubing through the channels 2 in the housing communicate with the annulus. During backwashing, the pressure of the working fluid is switched to the annulus. The fluid flows through the protrusions 8 on the outer surface of the nozzle, the channels 4 of the nozzle into its inner part and, lifting the ball 6, moves to the wellhead. The valve can be used when washing under pressure, in various technological schemes of production and development, in the schemes during operation of electric centrifugal pumps with discharge of liquid from tubing pipes, when lifting equipment during repair, Formula of the Invention Valve for underground equipment of wells, including a tubular body with radial channels, inlet in the lower part of the nozzle with radial channels, installed inside the body, seat, ball and stop, different IQIA, that, in order to increase by ezhnosti valve operation in an underground well equipment, the outer surface of the upper branch pipe and accordingly the inner surface of the housing are made conical, wherein the lower nozzle portion on the outer surface has projections, and installed under the saddle pipe. Sources of information taken into account in the examination: 1. Bogdanov A. A. Submersible centrifugal pumps for oil production. 1968 s. 53-54. 2. USSR author's certificate number 299635, cl. E 21 B 21/00, 1967.