Pressurized pump throwing device of hydraulic jet pump

Abstract

The utility model provides an under-pressure pump throwing device of a hydraulic jet pump, which belongs to a device used in oil and gas exploitation and production and is provided with a lock cylinder, a connecting rod is mounted in a connecting rod mounting cavity at the upper part of the lock cylinder, a lock sleeve is mounted in a lock sleeve mounting cavity at the lower part of the lock cylinder, and the upper end of the lock sleeve and the lower end of the connecting rod are mounted together. The lower portion of the lock sleeve is provided with a plurality of longitudinal slits, elastic claw heads are arranged among the slits, the upper portion of the lock cylinder is provided with a locking device, the lower portion of the lock cylinder is provided with a pump throwing pipe through a coupling, the lower end of the pump throwing pipe is provided with an adapter connector, and a sealing piece is arranged between the lock cylinder and the connecting rod. The device is simple in structure, convenient to operate and good in use effect, can realize pump throwing under pressure at a wellhead without pressure relief and other equipment and tools, and improves the discharge and mining time rate of the injection pump, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a device used in oil and gas production, in particular to a pump throwing device of a hydraulic jet pump. Technical Background

[0002] In the production process of oil and gas fields, hydraulic jet pumps are widely used due to their advantages of no relatively moving parts, compact structure, large displacement range, strong sand and coal carrying capacity, etc. However, when the existing hydraulic jet pumps are put into operation, when there is pressure at the wellhead, the wellhead pressure needs to be released before the pump can be put into operation, which takes a long time to operate and has low working efficiency. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a hydraulic jet pump pressure pump device to improve the working efficiency.

[0004] The utility model is implemented as follows: a hydraulic jet pump with a pressure pump device comprises a lock cylinder, a connecting rod is installed in a connecting rod installation cavity at the upper part of the lock cylinder, a lock sleeve is installed in a lock sleeve installation cavity at the lower part of the lock cylinder, the upper end of the lock sleeve is installed together with the lower end of the connecting rod, a plurality of longitudinal slits are provided at the lower part of the lock sleeve, elastic claws are provided between the slits, a locking device is provided at the upper part of the lock cylinder, a pump pipe is installed at the lower part of the lock cylinder through a coupling, a variable buckle joint is installed at the lower end of the pump pipe, and a sealing member is provided between the lock cylinder and the connecting rod.

[0005] The locking device is provided with a first locking block and a second locking block, the middle parts of the two locking blocks are respectively provided with connecting rod mounting grooves, the lower parts of the two locking blocks are respectively provided with mounting grooves, the shapes of the mounting grooves are adapted to the shapes of the shoulders at the upper end of the lock cylinder, and the two locking blocks are also respectively provided with transverse mounting holes, on which locking bolts are installed.

[0006] The beneficial effects of the utility model are as follows: the device has a simple structure and is easy to operate, and can realize pressurized pumping without pressure relief at the wellhead and without the aid of other equipment and tools, thereby improving the drainage time rate of the jet pump, reducing production costs, and having a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the pressure-dispensing pump device of the utility model.

[0008] Figure 2 It is a schematic diagram of the first locking block structure in the locking device of the utility model.

[0009] Figure 3 It is a cross-sectional view of the locking device in the utility model.

[0010] Figure 4 It is a schematic diagram of the second locking block structure in the locking device of the utility model.

[0011] Figure 5 It is a schematic diagram of the existing pump core structure.

[0012] Figure 6 It is a schematic diagram of the state before the pressure-dropping pump device of the utility model is connected to the pump core.

[0013] In the figure: locking device 1, first locking block 11, mounting hole 111, second locking block 12, locking bolt 13, groove 14, connecting rod mounting groove 15, lock cylinder 2, sealing member 21, shoulder 22, locking sleeve mounting cavity 23, locking sleeve 3, slit 31, elastic claw 32, coupling 4, pumping tube 5, handle 6, variable buckle joint 7, pump core 20, salvage head 201, salvage neck 202. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0015] As shown in the accompanying drawings, a hydraulic jet pump with a pressure pump device of the utility model comprises a lock cylinder 2, a connecting rod 8 is installed in the connecting rod installation cavity at the upper part of the lock cylinder, a lock sleeve 3 is installed in the lock sleeve installation cavity 23 at the lower part of the lock cylinder, the upper end of the lock sleeve is installed together with the lower end of the connecting rod, a plurality of longitudinal slits 31 are provided at the lower part of the lock sleeve, elastic claws 32 are provided between the slits, a locking device 1 is provided at the upper part of the lock cylinder, a pump pipe 5 is installed at the lower part of the lock cylinder through a coupling 4, a variable buckle joint 7 is provided at the lower end of the pump pipe, and a seal 21 is provided between the lock cylinder and the connecting rod.

[0016] The locking device 1 is provided with a first locking block 11 and a second locking block 12. The middle parts of the two locking blocks are provided with connecting rod mounting grooves 15, and the lower parts of the two locking blocks are provided with mounting grooves 14. The shape of the mounting grooves is adapted to the shape of the shoulder 22 at the upper end of the lock cylinder. The two locking blocks are also provided with transverse mounting holes 111, and locking bolts 13 are installed on the mounting holes. The mounting holes can be threaded holes or plain holes. When in use, the locking bolts 13 can be installed and positioned through the mounting holes. The locking device is used to lock the connecting rod and the lock cylinder and can be unlocked. After the locking bolts are installed, the mounting grooves 14 on the two locking blocks are sleeved on the shoulder 22 on the lock cylinder. The locking device can rotate freely relative to the lock cylinder and can only move a small distance axially. After the locking bolts 13 are tightened, the connecting rod 8 is locked so that the connecting rod and the locking device cannot move relative to each other. After the locking bolts are loosened, the connecting rod 8 can slide freely in the connecting rod mounting groove 15. Obviously, locking devices with other structures can also be used.

[0017] When it is necessary to operate the pump under pressure, loosen the locking bolt 13, push the handle 6 downward to push the locking sleeve 3 out of the lock cylinder 2, and insert the pump core fishing head end from the center of the buckle joint 7 and push the pump core until the locking sleeve 3 is completely inserted into the lock cylinder 2. Tighten the locking bolt 13, push and pull the pump core to confirm that the pump core is fixed. Thereafter, remove the tree cap of the oil (gas) tree at the wellhead, and install the pump under pressure device on the oil (gas) tree. Open the wax cleaning valve on the oil (gas) tree, loosen the locking bolt 13, press the handle 6 to the bottom and tighten the locking bolt 13. At this time, the locking sleeve 3 pushes the pump core 20 into the small oil pipe at the wellhead. After the locking sleeve 3 is separated from the lock cylinder 2, the elastic claw head 32 opens, releasing the fixation of the fishing head 201 on the fishing neck 202 of the pump core. Open the corresponding valve on the wellhead, and the power fluid enters through the wellhead liquid inlet and the corresponding valve, pushing the pump core (20) to move downward in the small oil pipe, and the liquid returns through the annular channel formed by the large oil pipe and the small oil pipe at the wellhead and the valve on the liquid outlet. Stop the liquid supply, close the corresponding valve on the wellhead, loosen the locking bolt 13, pull the handle 6 to the highest point, close the wax cleaning valve on the wellhead, remove the pressure pump device, and install the tree cap of the oil (gas) tree; continue to supply liquid to push the pump core into place and produce.

[0018] During manufacturing, the elastic claws are elastic because the lower part of the strip-shaped lock sleeve cylinder between the slits is expanded outward before being installed in the utility model, and after being installed in the lock cylinder, it is bound by the inner wall of the lock cylinder and generates elasticity. After being separated from the lock cylinder, the lower part of the elastic claws automatically expands under the action of elasticity.

[0019] The lock sleeve is fixed with the connecting rod through the thread on the inner side of the upper part thereof. The sealing member 21 can be a sealing ring.

[0020] The parts not described in detail in the present invention are all prior art.

[0021] The embodiments described above are only preferred specific implementations of the present invention in the application of hydraulic jet pressure pumps. Common changes and substitutions made by technicians in this field within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic jet pump with pressure injection pump device, characterized in that: The utility model comprises a lock cylinder (2), a connecting rod (8) being installed in a connecting rod installation cavity at the upper part of the lock cylinder, a lock sleeve (3) being installed in a lock sleeve installation cavity (23) at the lower part of the lock cylinder, the upper end of the lock sleeve being installed together with the lower end of the connecting rod, the lower part of the lock sleeve being provided with a plurality of longitudinal slits (31), elastic claws (32) being provided between the slits, a locking device (1) being provided at the upper part of the lock cylinder, a pumping pipe (5) being installed at the lower part of the lock cylinder through a coupling (4), a variable buckle joint (7) being installed at the lower end of the pumping pipe, and a sealing member (21) being provided between the lock cylinder and the connecting rod.

2. The hydraulic jet pump pressure pump device according to claim 1, characterized in that: The locking device (1) is provided with a first locking block (11) and a second locking block (12). The middle parts of the two locking blocks are provided with connecting rod mounting grooves (15), and the lower parts of the two locking blocks are provided with mounting grooves (14). The shapes of the mounting grooves are adapted to the shapes of the shoulders (22) at the upper end of the lock cylinder. The two locking blocks are also provided with transverse mounting holes (111), and locking bolts (13) are installed on the mounting holes.

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