CN212743959U

CN212743959U - Solid antisludging device

Info

Publication number: CN212743959U
Application number: CN202020204683.3U
Authority: CN
Inventors: 付向国; 周会勇; 王厚国; 陶峰; 刘守庆
Original assignee: Yancheng Kaiming Drilling And Production Equipment Co ltd
Current assignee: Yancheng Kaiming Drilling And Production Equipment Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-03-19
Anticipated expiration: 2030-02-24

Abstract

The utility model relates to the field of scale inhibition and pollution prevention of petroleum pipelines, in particular to a high-efficiency solid scale inhibitor, which comprises an upper joint, a lower joint, an outer pipe, an inner pipe, a solid scale inhibition block and a supporting device; the upper joint is connected above the outer pipe through threads, the lower joint is connected below the outer pipe through threads, the inner pipe is arranged inside the outer pipe, the inner pipe is connected with the upper joint through threads, an annular cavity is formed between the outer pipe and the inner pipe, the solid scale inhibition blocks are sleeved on the inner pipe and located in the annular cavity, and a supporting device capable of moving the positions of the solid scale inhibition blocks is arranged on the lower portion of the inner pipe. The utility model discloses the device is applied to in the oil-water well, but continuous release anti-scaling agent makes its dispersion in the oil stream to reach the purpose of hindering, scale control.

Description

Solid antisludging device

Technical Field

The utility model relates to a petroleum pipeline's antifouling field of hindering dirty especially relates to a high-efficient solid hinders dirty ware.

Background

Because the stratum water of the original oilfield has higher general mineralization degree, the comprehensive water content of the oil well is continuously improved along with the extension of the development time of the oilfield, and the scaling of a production pipe column is gradually serious after the development time of the oil field reaches a middle-high water content period, thereby causing great harm to the production of crude oil. The accumulation of scale in the oil well pipe column and the underground equipment can cause the accidents of pipe diameter reduction, shot hole blockage, packer setting difficulty, electric pump motor heat dissipation difficulty, electric pump blade guide wheel clamp, pumping unit well pump clamp, pump leakage, sucker rod breaking and the like. In particular, the electric pump production well destroys the balance state of the original well liquid due to the large production pressure difference and the heating action of the motor in the pumping process, accelerates the scaling speed and causes severe scaling. The scaling of the pipe column not only affects the lifting capacity of a shaft and reduces the service life of the electric pump unit, but also easily causes underground accidents, shortens the pump detection period, seriously affects the normal production of an oil well and causes great loss.

SUMMERY OF THE UTILITY MODEL

To the technical problem who mentions in the above-mentioned background art, consequently, the utility model provides a solid antisludging equipment.

The solid scale inhibitor comprises an upper joint, a lower joint, an outer pipe, an inner pipe, a solid scale inhibiting block and a supporting device; the upper joint is connected above the outer pipe through threads, the lower joint is connected below the outer pipe through threads, the inner pipe is arranged inside the outer pipe, the inner pipe is connected with the upper joint through threads, an annular cavity is formed between the outer pipe and the inner pipe, the solid scale inhibition blocks are sleeved on the inner pipe and located in the annular cavity, and a supporting device capable of moving the positions of the solid scale inhibition blocks is arranged on the lower portion of the inner pipe.

Preferably, the outer pipe is provided with an outer liquid inlet hole.

Preferably, the inner pipe is provided with an inner liquid inlet hole.

Preferably, the solid scale inhibition blocks are provided with through holes, and partition plates are arranged between the solid scale inhibition blocks.

Preferably, the surface of the lower part of the inner pipe is provided with an external thread, and the supporting device is provided with an internal thread matched with the external thread.

Preferably, the solid scale inhibition block comprises one or more of a high-efficiency scale inhibitor, a framework proppant, a dissolution rate regulator and an active agent.

The utility model provides a solid antisludging device, which has the advantages that the utility model mixes the high-efficiency solid antisludging agent with the slow-dissolving substances such as the dissolution speed regulator and the like, and then carries out solidification and molding through a special process to make the chemical solid antisludging device to be put into an oil well, and the chemical solid antisludging device is slowly dissolved under the soaking and scouring of well liquid, so that the high-efficiency antisludging agent is continuously released, the scaling of the oil well is continuously inhibited, the period can reach more than one year, and the solid antisludging device has the advantages of less dosage, long action period, low cost, long service cycle and the like, and is an; 2. the utility model discloses the punchhole has been put to the inside and outside pipe equipartition that the device adopted, has effectively guaranteed that the anti-scaling agent is evenly carried by the fluid to guarantee output liquid anti-scaling agent concentration.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic three-dimensional structure diagram of the device of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

in the figure, 1, an upper joint; 2. a lower joint; 3. an outer tube; 4. an inner tube; 5. a solid scale block; 6. a support device; 7. an annular cavity; 8. an outer liquid inlet hole; 9. an inner liquid inlet hole; 10. a through hole; 11. a separator.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.

The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in figures 1 and 2, the solid scale inhibitor comprises an upper joint 1, a lower joint 2, an outer pipe 3, an inner pipe 4, a solid scale inhibiting block 5 and a support device 6. The upper joint 1 is in a circular tube shape, the lower portion of the upper joint is arranged in the outer tube 3 through threaded connection and located above the outer tube 3, the upper portion of the lower joint 2 is connected in the outer tube 3 through threaded connection and located below the outer tube 3, the inner tube 4 is embedded in the outer tube 3 in a sleeved mode, and the inner tube 4 is connected to the upper joint 1 through threaded connection. Form annular cavity 7 between outer tube 3 and the inner tube 4, a plurality of solids hinder dirt piece 5 cup joint on inner tube 4 and be in annular cavity 7, hinder dirt piece 5 through the solid and can prevent the oil well scale deposit, and inner tube 4 lower part is equipped with the strutting arrangement 6 that portable solid hinders the dirt piece 5 position, avoids the solid to hinder the downward landing of dirt piece 5.

The utility model discloses in the device, be equipped with outer feed liquor hole 8 on the outer tube 3, can make liquid pass in and out outer tube 3 from outer feed liquor hole 8 in the pit.

The utility model discloses in the device, be equipped with interior feed liquor hole 9 on the inner tube 4, can make liquid pass in and out inner tube 4 from interior feed liquor hole 9 in the pit.

The utility model discloses in the device, the solid hinders and is equipped with through-hole 10 on the dirt piece 5, hinders the distribution quantity of through-hole 10 on the dirt piece 5 through the change solid, can change the solid and hinder the solubility of medicinal preparation in the dirt piece 5. Be equipped with the baffle between the solid hinders dirt piece 5, the quantity of baffle 11 is the same with the quantity of solid hinders dirt piece 5, can fix the distance between the solid hinders dirt piece 5 through baffle 11, prevents that solid hinders dirt piece 5 from because of weight landing downwards to gather together.

The utility model discloses in the device, the surface of inner tube 4 lower part is equipped with the external screw thread, and strutting arrangement 6 is equipped with the internal thread that matches with the external screw thread. The knob supporting device 6 can make the supporting device 6 slide up and down along the inner pipe 4, thereby changing the position of the solid scale block 5 on the inner pipe 4.

In the device of the utility model, the solid scale-blocking block 5 comprises one or a combination of a plurality of high-efficiency scale inhibitor, a framework propping agent, a dissolution rate regulator and an active agent. The efficient antiscaling agent is compounded with antiscaling agent and polymer dispersant to overcome the low efficiency of single antiscaling agent and has antiscaling effect higher than that of single antiscaling agent. The skeleton support agent is a high molecular polymer, is a good wax-proof agent and scale inhibitor, has a high molecular net structure, has a dispersing effect on scale forming crystal nuclei, is suspended in water and does not deposit, does not adhere to the surface of metal to generate scale, is mixed with the scale inhibitor for processing and forming, and plays a role in supporting the scale inhibitor in water to slowly dissolve the scale inhibitor. The dissolution rate regulator is a high molecular polymer, and can change the dissolution rate of the high-efficiency scale inhibitor in the scale prevention block at different temperatures according to the usage amount of the high molecular polymer. The small amount of active agent has the functions of preventing scale forming crystals from adhering to the tube wall and damaging the crystal structure.

The above-mentioned medicines are mixed according to a certain proportion, uniformly stirred, solidified and formed by means of special-purpose equipment so as to form the solid antiscaling block with large pore channel in the middle, then placed in a specially-made working cylinder so as to obtain the invented solid antiscaling device. When the scale inhibitor is put under an oil well oil pump or an electric pump, the scale inhibitor is slowly dissolved in underground fluid, and plays a role in scale inhibition through the actions of adsorption, cantharidization, dispersion and the like.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The solid scale inhibitor is characterized by comprising an upper joint, a lower joint, an outer pipe, an inner pipe, a solid scale inhibiting block and a supporting device; the upper joint is connected above the outer pipe through threads, the lower joint is connected below the outer pipe through threads, the inner pipe is arranged inside the outer pipe, the inner pipe is connected with the upper joint through threads, an annular cavity is formed between the outer pipe and the inner pipe, the solid scale inhibition blocks are sleeved on the inner pipe and located in the annular cavity, and a supporting device capable of moving the positions of the solid scale inhibition blocks is arranged on the lower portion of the inner pipe.

2. The solid scale inhibitor of claim 1, wherein the outer pipe is provided with an outer liquid inlet hole.

3. The solid scale inhibitor of claim 1, wherein the inner tube is provided with an inner liquid inlet hole.

4. The solid scale inhibitor of claim 1, wherein the solid scale inhibiting blocks are provided with through holes, and partition plates are arranged between the solid scale inhibiting blocks.

5. The solid scale inhibitor of claim 1, wherein the surface of the lower part of the inner tube is provided with a first external thread, and the support device is provided with a first internal thread matching with the first external thread.