RU193923U1 - JET PUMP - Google Patents

Abstract

The utility model relates to inkjet technology and can be used in the oil and gas industry for the development and operation of gas and gas condensate wells. The objective of the utility model is to create a device that eliminates the disadvantages of analogues and prototype. The technical result is the expansion of the arsenal of technical means. The jet pump includes a housing, a removable working insert, consisting of a flow distributor made with radial, central and peripheral axial channels, a nozzle holder, a receiving chamber, a mixing chamber, a diffuser, a fishing head, a collet mechanism with a pin. The device is also equipped with a removable nozzle and interchangeable inserts of the mixing chamber. 3 ill.

Description

The utility model relates to inkjet technology and can be used in the oil and gas industry for the development and operation of gas and gas condensate wells.

Recoverable jet pump is known from the technical field [RF patent No. 88750, F04F 5/14, publ. 11/20/2009 bull. No. 32], consisting of a housing with holes made in it, heads for gripping with a fishing tool, channels for supplying and discharging passive and active flows, an active nozzle, a receiving chamber, a mixing chamber, a diffuser, a check valve, and a removable working insert. Also known stationary borehole jet pump [RF patent No. 137994, F04F 5/00, publ. 02/27/2014 bull. No. 6], consisting of a housing with holes made therein, a nozzle, a flow distributor made with peripheral axial channels, a working insert, a removable insert.

The main disadvantage of the considered pumps is the impossibility of changing their performance under operating conditions at wells with various geological and technical characteristics. This drawback is due to the design features of analogues.

Known jet pump [RF patent No. 2228462, F04F 5/14, publ. 05/10/2004 bull. No. 13], consisting of a housing with an active nozzle, having a cone-shaped portion on the inner front surface that forms a passive nozzle, a removable mixing chamber, a diffuser with a flange connected to the corresponding rear flange of the removable mixing chamber through a removable adapter having an inner conical surface with opening angle identical to the opening angle of the diffuser, with each removable mixing chamber having individual flanges with an inner diameter corresponding to the diameter of the chamber, and each removable adapter has a conical surface of different lengths.

The main disadvantage of the known jet pump is the high cost of replacing the mixing chamber as a single technical unit, due to the design features of the pump.

The closest in design is a removable jet pump [RF patent No. 2362913, F04F 5/16, publ. 07/27/2009 bull. No. 21], consisting of a housing with openings made in it, a check valve, passive and active medium supply and exhaust channels, an active nozzle, a receiving chamber, a mixing chamber, a diffuser, a collet mechanism with a shear pin, and a flow distributor.

The main disadvantage of the known pump is the inability to change performance during the operation of the well. This disadvantage is due to the structural features of the prototype.

The objective of the utility model is to create a device that eliminates the disadvantages of analogues and prototype.

The technical result is the expansion of the arsenal of technical means.

The problem and the technical result in a jet pump including a housing, a removable working insert, consisting of a flow distributor made with radial, central and peripheral axial channels, nozzle holder, receiving chamber, mixing chamber, diffuser, fishing head, collet mechanism with a pin, is solved the fact that the device is equipped with a removable nozzle and interchangeable inserts of the mixing chamber.

The jet pump is illustrated using graphic materials, where in FIG. 1 shows a general diagram of a jet pump; FIG. 2 and FIG. 3 shows the design of the interchangeable inserts of the mixing chamber and the interchangeable nozzle, as well as their relative position.

The jet pump consists of a stationary housing 17, lowered into the well on a tubing string (not shown in the figures) and a removable working insert located in it, which consists of a flow distributor 1 made with radial channels 2, a central channel 12, and peripheral axial channels 13 connected by means of a nozzle holder 11 with a replaceable nozzle 10. A receiving chamber 9 and a mixing chamber 8 with a replaceable insert 7 are placed above the distributor 1 and are connected in series with the diffuser 6 and fishing heads 5 th with bypass openings 4. In the lower part of the insert base 15 is placed with the bypass openings 16, on which the fastener assembly, consisting of the collet 18, the lock pin 19 and cup 20 with a thread 21 for attaching the deep manometer. The sealing of the working extractable insert in the housing is carried out by sealing cuffs 3, 14.

The claimed jet pump operates as follows. The active stream (gas or liquid) under pressure is supplied to the pump through the annulus. Passing through the radial hole 2 of the distributor 1, then at a high speed through the interchangeable nozzle 10 into the receiving chamber 9, the active flow carries the bottomhole products (injected flow) into the mixing chamber 8 and the diffuser 6, where the flows are mixed and the pressure increases to the required to lift the mixed stream to the surface. From the bottom-hole zone, the injected stream enters the receiving chamber 9 through the opening 16 of the base 15, the peripheral holes 13 of the distributor 1. The device that holds the working insert in the stationary housing 17 during operation is the clamp assembly. When the working insert is planted in the stationary case 17, the feathers of the collet 18 passing through the narrowed part of the body are compressed and, having reached the bottom of the base, return to their original position, providing engagement of the working insert with the collet 18.

To replace the flow part (nozzle 10, interchangeable insert 7 of the mixing chamber 8), the working insert is removed with tools of cable technology. When lifting the working insert, after cutting the pin 19, the collet 18 moves into the bore of the cup 20, the petals of the collet 18 are compressed and release the working insert from fixing.

To implement the claimed utility model, the necessary technical documentation (including working drawings) has been developed, the operation of the jet pump was simulated by stepwise drawing out the processes of its installation and extraction with a calculated confirmation of the necessary efforts. Based on the research, we can argue that the claimed utility model can be implemented at specific production facilities.

The use of different sizes of interchangeable inserts of the mixing chamber and interchangeable nozzles, allows you to change the inner diameter d _to and the length L _to the mixing chamber, as well as the spatial arrangement of the mixing chamber and interchangeable nozzle, which in turn allows you to change the performance and, accordingly, achieve a change in the bottomhole pressure and optimizing hydrocarbon production.

It is also worth noting that the use of interchangeable nozzles and interchangeable inserts of the mixing chamber, made of materials of high strength and corrosion resistance, allows you to extend the life of the jet pump and reduce the cost and duration of maintenance and repair.

Claims (1)

A jet pump comprising a housing, a removable working insert, consisting of a flow distributor made with radial, central and peripheral axial channels, a nozzle holder, a receiving chamber, a mixing chamber, a diffuser, a fishing head, a collet mechanism with a pin, characterized in that the device is equipped with a replaceable nozzle and interchangeable inserts of the mixing chamber.

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