RU167492U1 - DEPTH DISPENSER - Google Patents

Abstract

The utility model relates to the oil industry, namely, to downhole oil processing and can be used both in vertical and directional wells. The technical result consists in increasing the efficiency of protection of downhole pumping equipment from complicating factors. The depth dispenser contains a container with a reagent, a filter to prevent mechanical impurities from entering the pump intake, a bypass device with a ball, equipped with a float separator with a seal, and installed with the possibility of movement along the axis inside the container when the reagent is consumed. Moreover, the bypass device is located in the lower part of the container, and in the upper nozzle. A centralizer is attached to the bottom of the float separator, the diameter of which is greater than the diameter of the base of the float separator, but less than the diameter of the seal. 6 c.p. f-ly, 1 Fig.

Description

The utility model relates to the oil industry, namely to downhole oil processing and can be used both in vertical and directional wells.

A well-known metering device is known (RF patent No. 2243362, IPC ЕВВ 43/00, publ. 12/27/2004), including a hermetically closed container filled with a reagent, equipped with an overflow valve, a cylinder with collars and a plunger with grooves, an elastic element, in addition, it is equipped an additional cylinder made in the form of a gas collector and a rod installed in the additional cylinder and connected to the plunger by a non-rigid connection, by which connection is the additional cylinder connected to the plunger, while the plunger or additional cylinder is faceted chitel stroke, and the elastic member is mounted on the additional cylinder.

A well-known dosing device (patent RU No. 119021, IPC ЕВВ 43/00, publ. 08/10/2012) containing a container with a reagent, a filter, a bypass device in the lower part of the container, a separator-float with the ability to move along the axis inside the container when spending reagent , an nozzle in the upper part of the container, with a shank installed below the container, and a transfer device installed in the ring located between the container and the shank in the sleeve connection.

A well-known dosing device (patent RU No. 49572. IPC ЕВВ 43/00, published on November 27, 2005) is closest in technical essence to the claimed device and is taken as a prototype containing a container with a reagent, a filter to prevent ingress of mechanical impurities, a bypass device, the device is equipped with a float separator installed with the possibility of movement along the axis inside the container when the reagent is consumed, and the bypass device is located in the lower part of the container, and in the upper part there is a nozzle with a hole.

However, the known analogues have insufficiently high strength and reliability of the structure, i.e. subject to external aggressive factors aimed at the destruction of the structure, which leads to the rapid failure of known devices.

The task the utility model is aimed at is developing a device for a downhole dispenser with a strong and reliable design of a bypass device and a float separator, which provides effective protection of downhole pumping equipment from complicating factors, as a result, increases the overhaul period of production wells, reduces underground repair costs.

The technical result, which the utility model aims to achieve, is to increase the reliability of the design, and, as a consequence, to increase the efficiency of protection of downhole pumping equipment from complicating factors.

The inventive device is illustrated in the figure.

The inventive device consists of the following elements.

The depth dispenser contains a container 1 with a reagent, a filter 2 to prevent ingress of mechanical impurities, a bypass device 3 located at the bottom of the container 1, a spacer-float 4 with the ability to move along the axis inside the container 1 when the reagent is consumed, the nozzle 5 located at the top container 1.

The bypass device 3 is a valve designed to replace the reagent with well products in the cavity of the container 1 as it is consumed. The ball 6 installed in the bypass device 3 is limited to two saddles 7 with a stroke of 20 mm

The separator-float 4 with the seal 9 attached in the upper part with the help of the nut 8 is intended for separation of different-phase liquids.

A centralizer 11 is attached to the bottom of the float separator 4 using a nut 10, which is a rubber disc whose diameter is 4 mm larger than the diameter of the base of the float separator 4.

The centralizer 11 eliminates the skew of the separator-float 4 and its jamming in the coupling joints of the tubing constituting the container 1.

The bypass device 3 is characterized by the presence of a ball and two saddles, without a spring.

In the prototype, the spring prevents the valve from opening, thereby preventing the reagent from displacing when the downhole doser is lowered into the well. During operation, the spring creates additional resistance to open the valve and the replacement of the reagent in sufficient quantities does not occur.

A ball with two saddles and without a spring is necessary for unimpeded fluid replacement as the reagent is consumed from the deep dispenser and to prevent leakage of fluid back from the dispenser during dispenser operation. During descent, the ball abuts against the upper saddle, sealing the passage section, and the liquid does not enter the deep dispenser during its descent into the well. In the well, under the force of gravity, the ball is applied to the lower saddle, thereby sealing the passage section and preventing leaking fluid from the dispenser.

The device operates as follows.

After assembling the depth meter at the wellhead and refueling the container 1 with reagent on the tubing string, the rough depth meter is lowered into the well.

During the operation of the sucker rod pump, a vacuum is created inside the filter 2, and this happens! suction of well products through the openings of the filter 2 and at the same time the reagent through the nozzle 5.

As the reagent is consumed in the cavity of the container 1, it is replaced by well products through the bypass device 3 due to the free movement of the ball 6 at any pressure drop and the length of the container 1.

The reagent from the dispenser exits through the nozzle 5, mixes with the incoming liquid through the holes of the filter 2.

When this happens, the separator-float 4 with the rubber seal 9 is moved up, and the centralizer 11 eliminates the skew of the separator-float 4 and its jamming in the coupling joints of the tubing constituting the container 1.

The ball 6, limited by two saddles 7, performs the function of an inlet valve for well production, which replaces the reagent consumed from the dispenser.

As a result, after all the reagent has flowed out of the dispenser, it will completely be replaced by well production.

Thus, the proposed downhole metering device has a high reliability design of the bypass device while maintaining a constant dose of reagent supply for the entire period of operation of the downhole metering device.

Claims (6)

1. A depth dispenser containing a container with a reagent, as well as a filter to prevent mechanical impurities from entering the pump intake, a bypass device with a ball, equipped with a float separator with a seal, and installed with the possibility of movement along the axis inside the container when the reagent is used, and the bypass device placed at the bottom of the container, and at the top - a nozzle, characterized in that a centralizer is attached to the bottom of the float divider, the diameter of which is larger than the diameter of the base die-float, but less than the diameter of the sealant, and the container with the reagent consists of tubing and coupling joints. 2. The dispenser according to claim 1, characterized in that the ball installed in the transfer device is limited to two saddles and is configured to move 20 mm. 3. The dispenser according to claim 1, characterized in that the centralizer is a rubber disc whose diameter is 4 mm larger than the diameter of the base of the float separator. 4. The dispenser according to claim 1, characterized in that the bypass device is a valve. 5. The dispenser according to claim 1, characterized in that the seal is attached to the upper part of the float separator with a nut. 6. The dispenser according to claim 1, characterized in that the centralizer is attached to the bottom of the float separator with a nut.