RU13388U1 - Borehole VALVE FOR DEPTH PUMPING EQUIPMENT (OPTIONS) - Google Patents

Abstract

BACKGROUND OF THE APPLICABLE CLAPPD HOLIDAY FOR THE DEPTH PUMPING EQUIPMENT (OPTIONS)

The utility model relates to the field of mining and is intended to ensure the stable operation of downhole pumping equipment.

Variants of a borehole valve containing a housing, a locking member with the ability to move in the cavity of the housing and a channel communicating the tubing string and the annulus through the cavity of the housing, in which:

1) a through hole is made in the housing for mounting the valve on the ICT column, the shut-off element is made in the form of a ball, pressed by a calibrated spring, and is located in a removable screw cap located in the cavity of the housing;

2) a through hole is made in the housing for mounting the valve on the tubing string, the shut-off element is located in a removable screw-up located in the housing cavity, and is made in the form of a two-seat spool, connected through a shield to a calibrated spring, and a seat is installed between the spool and the spring;

3) a through hole is made in the housing for mounting the valve on the tubing string, the shut-off element is located in a removable screwdriver located in the body cavity and is made in the form of a single-seat spool with a calibrated spring, a lock ring and a lock washer with locks mounted on it, while a saddle is installed at the bottom of the interchangeable screwdriver.

The only technical results achieved by using the claimed group are valve operability in wells equipped with pumps of any type (both centrifugal and rod pumps), valve versatility, and reduction of costs for well operations.

Description

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FOR DEPTH PUMPING EQUIPMENT (OPTIONS)

The utility model relates to the field of mining and is designed to ensure stable operation of downhole pumping equipment.

The utility model is represented by three options:

1- flushing valve;

2- valve spool;

3- drain valve.

Known valve for bleeding pressure from the annulus (developer - NGDU Suleevneft, Almetyevsk), comprising a housing, a guide sleeve, a spring and a channel. This device is installed on the manifold, where the borehole fluid through the lateral outlet of the valve enters the discharge manifold.

A disadvantage of the known valve is its frequent freezing in the winter. The reason for this is the formation of hydrate in the valve chamber at low outdoor temperatures. Hydrate freezing entails an increase in overpressure in the annulus and a decrease in the dynamic level of the well, i.e. instability of the well. In addition, a lot of time and money is spent on heating equipment.

A well-known well valve for deep-well pumping equipment, comprising a housing, a locking member with the possibility of movement in the cavity of the housing and a channel communicating the tubing string and annulus (Oil and gas industry. Overview. Series Oilfield. M., 1992). This valve is installed on the tubing string, on which pumping equipment is lowered into the well. Mounting the valve directly on the tubing eliminates the freezing of the valve due to the downhole temperature and reduces production costs.

The reason that impedes the receipt of the following technical result when using a known valve is the limited range of use, because The valve is designed for use in wells equipped with centrifugal pumps.

The task to which the claimed group of utility models is directed is to create a well valve with a wide range of use, which ensures the reliability and durability of the downhole pumping equipment.

The only technical results achieved by using the claimed group are valve operability in wells equipped with pumps of any type (both centrifugal and rod pumps), valve versatility, and reduction of costs for well operations.

These technical results are achieved by the fact that in the well-known downhole valve for deep-well pumping equipment comprising a housing, a shut-off element with the possibility of movement in the cavity of the housing and a channel communicating the tubing string and annular space through the housing cavity, according to the utility model, a through hole is made in the housing for mounting the valve on the ICT column, the shut-off element is made in the form of a ball, drawn by a calibrated spring, and is located in a removable screw cap located in the body cavity.

These technical results are achieved by the fact that in the well-known downhole valve for downhole pumping equipment comprising a housing, a locking member with the ability to move into the cavity of the housing and a channel communicating the tubing string and the annulus through the cavity of the housing, according to the utility model, a through hole is made in the housing for mounting the valve on the tubing string, the shut-off element is located in a removable screw-hole located in the body cavity and is made in the form of a two-seat spool connected via a rod to the tare hydrochloric spring, wherein between the slide valve and the spring seat is installed.

These technical results are achieved by the fact that in the well-known downhole valve for deep-well pumping equipment, comprising a housing, a shut-off element that can be moved in the housing cavity and a channel communicating the tubing string and the annulus through the housing cavity, according to the utility model, a through hole is made in the housing for mounting the valve on the tubing string, the shut-off element is located in a removable screwdriver located in the body cavity, and the manufacture is in the form of a single-seat spool with calibrated mounted on it th spring, retaining ring and lock washer with retainers, while a saddle is installed in the lower part of the interchangeable screwdriver.

Unified technical results are achieved by the presence of the following essential features common to all valve variants. The ability to operate the valve in wells equipped with pumps of any type is due to the presence of a through hole in the valve body for mounting the valve on the tubing string. So, in the case of operation of sucker rod pumping equipment, there are no obstacles for lowering the rods. The presence of a replaceable screwdriver in the valve ensures the universality of the valve, its multivariance, since it is the design of the screwdriver that determines one or another function of the valve, and depending on the production need, you can reinstall the valve by changing the screwdriver. This significantly reduces production costs. The spring calibration indicator sets the pressure range at which one or another valve variant works.

The distribution of functions of the valve options is as follows.

Kleiman flushing along with bypassing gas from the annulus into the tubing flushes hydrated-paraffin deposits in the well. Flushing allows the installation of a ball as a locking body, which performs the function of a single-seat spool, but much cheaper in manufacturing. Using a flush valve shortens the flushing cycle, as excludes the passage of flushing fluid through the deep-pumping equipment. This improves the quality of the flushing, reduces the volume of flushing fluid and the time of the operation, and therefore reduces production costs.

The spool valve solves the problems of gas bypass and well thickening (changing the volume of fluid). The double-seat condition of the slide valve allows gas to be bypassed when the pressure in the annulus is less than the spring calibration pressure and to silence the well when the annular pressure exceeds the pressure that the spring is calibrated. The last operation is aimed at maintaining environmental cleanliness on the surface, since it eliminates the clogging of the near-wellbore territory.

well. A one-way fluid transfer provides a mechanism consisting of a single-seat spool, a retaining ring, a lock washer with locks and.

in this application for the issuance of a certificate, the requirement of unity is met, since objects of the same type are declared - devices that ensure the achievement of the same complex of technical results. The claimed variants of the utility model have the same purpose, while performing various functions depending on the production tasks.

The drawings show frontal sections of the flushing valve (FIG. 1), the spool valve (FIG. 2) and the drain valve (FIG. 3).

The flushing valve includes a housing 1 with a through hole 2 and a cavity 3 connected by a channel 4. The cavity 3 is drowned out by a replaceable screwdriver 5, in which a ball 6 is installed, pressed by a calibrated spring 7.

The spool valve contains a housing 1 with a through hole 2 and a cavity 3 connected by a channel 4. The cavity 3 is plugged with a replaceable screwdriver 5. in which a two-seat spool 6, a rod 7 and a calibrated spring 8. are installed. Between the spool 7 and spring 8 there is a seat 9, inside of which rod 7 moves.

The drain valve contains a housing 1 with a through hole 2 and a cavity 3 connected by a channel 4. The cavity 3 is plugged with a replaceable screwdriver 5, in which a single-seat spool 6 is mounted. On the spool 6 there is a retaining ring 7 and a lock washer 8 with locks 9. The spool 6 is pressed with the upper part calibrated spring 10, and the lower part abuts the saddle 11.

The downhole valve operates as follows. Using a thread cut at the outlets of the through hole 2 of the housing 1. The valve is mounted on the tubing string, on which the pumping equipment is lowered into the well. Previously, in the cavity 3 of the valve body, depending on the production task, one or another interchangeable screwdriver 5 is installed.

The flushing valve for the purpose of gas bypass is lowered to a depth of 30-50 m from the wellhead. When the downhole pumping equipment is turned off, the annular pressure moves the ball 6, squeezing the spring 7. Gas is transferred from the annular space to the 1PC column with the cavity 3 and channel 4. To solve the problem of hydrated paraffin deposits, the valve is installed below 301SC deposits (20-800 m ), and the valve works in the same way, driving the flushing fluid in a short way: from the annulus through cavity 3 and channel 4 to the tubing string and further to the wellhead, excluding the ingress of flushing fluid into the downhole pumping equipment.

The spool valve is triggered by gas bypass at a pressure in the annulus less than the pressure to which the spring is calibrated. In this case, the spool 6, acting through the rod 7 on the spring 8, moves in the cavity 3 and opens the way from the annulus through the channel 4 into the ICT column. When the pressure in the annulus exceeds the calibration pressure of the spring, the spool 6 presses the spring 8 so that it sits in the saddle 9 and cuts off the message of the tubing string with the annulus. Well killing occurs

The drain valve ensures the tightness of the pumping equipment using a spool 6, spring-loaded 8 to the seat 11. The valve is activated when the pump is turned on. In this case, the spool 6 rises from the saddle 11 to its highest position and is fixed by means of a retaining ring 7 and a lock washer 8 with fixators 9, the liquid supplied by the pump flows from the tubing string through the cavity 3 into the annulus, after which a trip is performed .

Claims (3)

1. The borehole valve for deep-well pumping equipment, comprising a housing, a locking member with the ability to move into the cavity of the housing and a channel communicating the tubing string and the annulus through the housing cavity, characterized in that a through hole is made in the housing for mounting the valve on the tubing string, the locking body is made in the form of a ball and a calibrated spring and is located in a removable screw cap located in the body cavity.  2. A downhole valve for deep-well pumping equipment, comprising a housing, a shut-off element that can be moved into the housing cavity and a channel communicating the tubing string and the annulus through the housing cavity, characterized in that a through hole is made in the housing for mounting the valve on the tubing string, the locking member is located in a removable screw-up cap located in the body cavity and is made in the form of a two-seat spool connected via a rod to a calibrated spring, and a saddle is installed between the spool and spring. 3. A downhole valve for downhole pumping equipment, comprising a housing, a shutoff member that can be moved into the housing cavity and a channel communicating the tubing string and annulus through the housing cavity, characterized in that a through hole is made in the housing for mounting the valve on the tubing string, the locking element is located in a removable screw-up cap located in the body cavity and is made in the form of a single-seat spool with a calibrated spring installed on it, a locking ring and a lock washer with locks, while a saddle is installed at the bottom of the interchangeable screwdriver.