Oil field polymer negative pressure preparation device

Abstract

The utility model relates to an oil field polymer negative pressure preparation device. According to the technical scheme, one side of a pump body is connected with a spray head body through a butt flange, and the other side of the pump body is provided with a pump body outlet flange; a wear-resistant nozzle is arranged in an inner cavity of the sprayer body, a polymer feeding pipe is arranged on the outer wall of a pump body on the outlet side of the wear-resistant nozzle, a wear-resistant throat pipe is arranged on the inner wall of the pump body on the outlet of the wear-resistant nozzle, and a diffusion cavity is arranged at the outlet of the wear-resistant throat pipe. The preparation device has the beneficial effects that the wear-resistant nozzle and the wear-resistant throat pipe are arranged, so that the problem of quicker wear caused by collision of polymer particles can be relieved, and the service life of the preparation device is prolonged; besides, a plurality of turbulent flow bulges are distributed on the outer wall of the diffusion cavity, so that the turbulent flow effect is achieved, the polymer particles and the power liquid are mixed more uniformly, and the mixing uniformity of the polymer particles and water is improved; and by increasing the number of the polymer feeding pipes, the suction volume of the polymer particles is increased, and the preparation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield polymer preparation technical field, especially relate to a kind of oilfield polymer negative pressure preparation device. BACKGROUND

[0002] With the continuous development of petroleum industry, oil exploitation is divided into three stages, namely primary recovery, secondary recovery and tertiary recovery. Among them, in the secondary recovery stage, people improve the reservoir pressure by injecting gas or water into the oil layer, supplement the elastic energy of the rock and fluid in the formation, so that the formation fluid can always flow to the oil well, so that the oil that can not be extracted by natural energy can be extracted. In the tertiary recovery stage, people can increase the flow capacity of crude oil and further improve the oil recovery by using various physical and chemical methods to change the viscosity of crude oil and the adsorption of rock. The main methods of tertiary recovery include polymer flooding, chemical flooding, gas flooding, thermal recovery and microbial flooding. During the polymer flooding process, the preparation of polymer injection water is manually transported to the side of the mixing tank one bag at a time, and then manually weighed and configured into the mixing tank. In addition, jet pumps are also used on site to prepare polymer injection water, but since polymer is usually in the form of solid particles, this will cause the throat of the jet pump to wear out quickly, thereby shortening the service life of the jet pump. Therefore, a device specifically designed for the preparation of polymer injection water is needed. SUMMARY

[0003] The utility model aims at the above-mentioned defects existing in prior art, provides a kind of oilfield polymer negative pressure preparation device, one aspect solves the problem of fast wear caused by polymer particle collision, improves the service life of preparation device, and the other aspect also improves the mixing uniformity of polymer particles.

[0004] The utility model discloses a kind of oilfield polymer negative pressure preparation device, its technical scheme is: including spray head main body (1), pump body (2), polymer feed pipe (3), pump body outlet flange (4), import flange (5), butt flange (6), wear-resistant nozzle (7), bolt (8), wear-resistant throat (9), diffusion cavity (10), the side of pump body (2) is connected spray head main body (1) by butt flange (6), the outside of spray head main body (1) is equipped with import flange (5), the other side of pump body (2) is equipped with pump body outlet flange (4);The inner chamber of spray head main body (1) is equipped with wear-resistant nozzle (7), the outer wall of pump body (2) is installed polymer feed pipe (3) in the outlet side of wear-resistant nozzle (7), wear-resistant throat (9) is equipped on the inner wall of pump body (2) at the outlet of wear-resistant nozzle (7), diffusion cavity (10) is equipped at the outlet of wear-resistant throat (9), power fluid enters wear-resistant nozzle (7) along the inner chamber of spray head main body (1), polymer particles enter the inner chamber of pump body (2) along polymer feed pipe (3).

[0005] Preferably, the diffusion cavity (10) is a horn structure, and a plurality of turbulent protrusions (11) are uniformly distributed on the outer wall of the diffusion cavity (10).

[0006] Preferably, the pump body (2) is provided with a second polymer feeding pipe (12), and the second polymer feeding pipe (12) is located on the corresponding side of the polymer feeding pipe (3).

[0007] Preferably, the pump body (2) is provided with a second polymer feeding pipe (12) and a third polymer feeding pipe (13), and the polymer feeding pipe (3), the second polymer feeding pipe (12) and the third polymer feeding pipe (13) are arranged at intervals of 120 degrees.

[0008] Preferably, the turbulent protrusion (11) is a cone structure.

[0009] Preferably, the turbulent protrusion (11) is a triangular prism structure.

[0010] The beneficial effects of the present application are as follows: the wear-resistant nozzle and the wear-resistant throat pipe can reduce the problem of rapid wear caused by polymer particle collision, and improve the service life of the jet pump; in addition, a plurality of turbulent protrusions are installed on the outer wall of the diffusion cavity, which plays a role of turbulent flow, makes the mixing of polymer particles and water more uniform, and improves the mixing uniformity of polymer particles; the number of polymer feeding pipes can be increased to improve the suction amount of polymer particles and improve the preparation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of embodiment 1 of the present application;

[0012] Figure 2 is a structural schematic view of embodiment 2 of the present application;

[0013] Figure 3 is a structural schematic view of embodiment 3 of the present application;

[0014] Figure 4 is Figure 3 is a schematic view of the outward shape of A in

[0015] Figure 5 is a schematic view of the outward shape of the polymer feeding pipe of embodiment 4;

[0016] In the above figure: the spray head body 1, the pump body 2, the polymer feeding pipe 3, the pump body outlet flange 4, the inlet flange 5, the butt flange 6, the wear-resistant nozzle 7, the bolt 8, the wear-resistant throat pipe 9, the diffusion cavity 10, the turbulent protrusion 11, the second polymer feeding pipe 12, and the third polymer feeding pipe 13. DETAILED DESCRIPTION

[0017] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0018] Embodiment 1, refer to Figure 1 The utility model discloses a kind of oilfield polymer negative pressure preparation devices, including spray head body 1, pump body 2, polymer feed pipe 3, pump body outlet flange 4, import flange 5, butt flange 6, wear-resistant nozzle 7, bolt 8, wear-resistant throat pipe 9, diffusion cavity 10, the one side of the pump body 2 is connected spray head body 1 by butt flange 6, the outside of spray head body 1 is equipped with import flange 5, the other side of the pump body 2 is equipped with pump body outlet flange 4;The inner chamber of the spray head body 1 is equipped with wear-resistant nozzle 7, the outlet side of wear-resistant nozzle 7 is installed polymer feed pipe 3 on the outer wall of pump body 2, wear-resistant throat pipe 9 is equipped on the inner wall of pump body 2 at the outlet of wear-resistant nozzle 7, wear-resistant throat pipe 9 is equipped with diffusion cavity 10 at the outlet, power fluid enters wear-resistant nozzle 7 along the inner chamber of spray head body 1, polymer particles enter the inner chamber of pump body 2 along polymer feed pipe 3.

[0019] The above-mentioned diffusion cavity 10 is a horn-shaped structure.

[0020] When the utility model is used, the outside of spray head body 1 is connected with power fluid pump output end by import flange 5, by spraying high-speed flowing power fluid, power fluid is sprayed to wear-resistant throat pipe 9 along wear-resistant nozzle 7, because negative pressure is generated, so polymer particles from polymer feed pipe 3 are driven into the inner chamber of wear-resistant throat pipe 9, solid-liquid mixing is realized, because wear-resistant throat pipe is used, so impact and wear of pump body are reduced, then, along diffusion cavity 10, speed is reduced and flows into subsequent stirring tank, the preparation of polymer water injection fluid is realized.

[0021] Embodiment 2, the utility model discloses a kind of oilfield polymer negative pressure preparation devices, including spray head body 1, pump body 2, polymer feed pipe 3, pump body outlet flange 4, import flange 5, butt flange 6, wear-resistant nozzle 7, bolt 8, wear-resistant throat pipe 9, diffusion cavity 10, the one side of the pump body 2 is connected spray head body 1 by butt flange 6, the outside of spray head body 1 is equipped with import flange 5, the other side of the pump body 2 is equipped with pump body outlet flange 4;The inner chamber of the spray head body 1 is equipped with wear-resistant nozzle 7, the outlet side of wear-resistant nozzle 7 is installed polymer feed pipe 3 on the outer wall of pump body 2, wear-resistant throat pipe 9 is equipped on the inner wall of pump body 2 at the outlet of wear-resistant nozzle 7, wear-resistant throat pipe 9 is equipped with diffusion cavity 10 at the outlet, power fluid enters wear-resistant nozzle 7 along the inner chamber of spray head body 1, polymer particles enter the inner chamber of pump body 2 along polymer feed pipe 3.

[0022] The difference from embodiment 1 is:

[0023] Referring to Figure 2 , the embodiment achieves the effect of turbulence by uniformly distributing a plurality of turbulence protrusions 11 on the outer wall of the diffusion cavity 10, and the turbulence protrusions 11 are in a conical structure or a triangular prism structure, thereby making the mixing of polymer particles and power liquid more uniform.

[0024] In the embodiment 3, the pump body 2 is connected with the spray head body 1 through the butt flange 6, the outer side of the spray head body 1 is provided with the inlet flange 5, and the other side of the pump body 2 is provided with the pump body outlet flange 4.

[0025] The difference between the embodiment 4 and the embodiment 3 is that:

[0026] Referring to Figure 3 and Figure 4 , the pump body 2 is provided with the second polymer feeding pipe 12, and the second polymer feeding pipe 12 is located on the corresponding side of the polymer feeding pipe 3, so that the suction amount of polymer particles can be improved.

[0027] In the embodiment 4, the pump body 2 is connected with the spray head body 1 through the butt flange 6, the outer side of the spray head body 1 is provided with the inlet flange 5, and the other side of the pump body 2 is provided with the pump body outlet flange 4.

[0028] The difference between the embodiment 4 and the embodiment 3 is that:

[0029] Referring to Figure 3 and Figure 5The second polymer feeding pipe 12 and the third polymer feeding pipe 13 are arranged on the pump body 2, and the polymer feeding pipe 3, the second polymer feeding pipe 12 and the third polymer feeding pipe 13 are arranged at intervals of 120 degrees, which can improve the suction amount of polymer particles and make the mixing more uniform.

[0030] The above merely describes preferred embodiments of the present application, and any modification or equivalent transformation of the technical solutions described above can be made by those skilled in the art. Therefore, any simple modification or equivalent transformation made according to the technical solutions of the present application is within the scope of the present application.

Claims

1. An oilfield polymer underpressure dispensing apparatus, characterized by: The utility model relates to a polymerization nozzle, including the nozzle main part (1), the pump body (2), polymer feed pipe (3), pump body export flange (4), import flange (5), butt flange (6), wear -resistant nozzle (7), bolt (8), wear -resistant throat pipe (9), diffusion cavity (10), one side of the pump body (2) is connected the nozzle main part (1) through butt flange (6), and the outside of nozzle main part (1) is equipped with import flange (5), and the other side of pump body (2) is equipped with pump body export flange (4), the inner chamber of nozzle main part (1) is equipped with wear -resistant nozzle (7), and the outer wall of pump body (2) is installed polymer feed pipe (3) at the export side of wear -resistant nozzle (7), and wear -resistant throat pipe (9) is equipped in the inner wall of pump body (2) at the export of wear -resistant nozzle (7), and diffusion cavity (10) is equipped with at the export of wear -resistant throat pipe (9), and power liquid enters wear -resistant nozzle (7) along the inner chamber of nozzle main part (1), and polymer particles enter the inner chamber of pump body (2) along polymer feed pipe (3).

2. The oilfield polymer negative pressure dispensing apparatus of claim 1, wherein: The diffusion cavity (10) is a horn structure, and a plurality of turbulent protrusions (11) are uniformly distributed on the outer wall of the diffusion cavity (10).

3. The oilfield polymer negative pressure dispensing device according to claim 1 or 2, characterized in that: The second polymer feed pipe (12) is installed on the pump body (2), and the second polymer feed pipe (12) is located on the corresponding side of the polymer feed pipe (3).

4. The oilfield polymer negative pressure dispensing device according to claim 1 or 2, characterized in that: The second polymer feed pipe (12) and the third polymer feed pipe (13) are installed on the pump body (2), and the polymer feed pipe (3), the second polymer feed pipe (12), and the third polymer feed pipe (13) are arranged at intervals of 120 degrees, respectively.

5. The oilfield polymer negative pressure dispensing apparatus of claim 2, wherein: The turbulent protrusion (11) is a cone structure.

6. The oilfield polymer negative pressure dispensing apparatus of claim 2, wherein: The turbulent protrusion (11) is a triangular prism structure.

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