CN212272157U

CN212272157U - Sand control device of electric pump

Info

Publication number: CN212272157U
Application number: CN202020404381.0U
Authority: CN
Inventors: 李维维; 吴频; 邢厚伟; 杜召; 傅鹏; 李运强; 马秋焕
Original assignee: BOHAI PETROLEUM EQUIPMENT (TIANJIN) ZHONGCHENG MACHINERY MANUFACTURING CO LTD; China National Petroleum Corp; CNPC Bohai Equipment Manufacturing Co Ltd
Current assignee: BOHAI PETROLEUM EQUIPMENT (TIANJIN) ZHONGCHENG MACHINERY MANUFACTURING CO LTD; China National Petroleum Corp; CNPC Bohai Equipment Manufacturing Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-01-01
Anticipated expiration: 2030-03-26

Abstract

The embodiment of the utility model discloses an electric pump sand control device, the other end of the oil pipe is sleeved with a conversion joint through taper thread sealing, the interior of the conversion joint is sleeved with a sand setting pipe through internal thread sealing, the surface of the conversion joint is sleeved with a sand blocking sleeve through external threads, and the oil pipe, the sand blocking sleeve and the sand setting pipe are all arranged in the sleeve; the utility model discloses a sand control cover and sand setting pipe for the faster well liquid of the velocity of flow that carries more sand material can change the direction of motion, stops upward movement to motor department, makes the slower well liquid of carrying less sand material of the velocity of flow rise, reaches the purpose to the motor department well liquid accuse sand that is in the top, and this scheme need not to use filter material such as screen pipe, so there is not the risk of blockking up the screen pipe, greatly reduced the emergence that the well condition was recumbent to the charge pump.

Description

Sand control device of electric pump

Technical Field

The embodiment of the utility model provides a relate to charge pump technical field, concretely relates to charge pump accuse sand device.

Background

The electric submersible pump is more and more widely applied in the field of oil extraction, and is popular in many oil fields due to the characteristics of maintenance-free property and long pump detection period. Especially in the later stage of oil well production, the large discharge capacity of the electric pump can help to improve the recovery ratio, so that the electric submersible pump is widely applied, the electric submersible pump is a multistage centrifugal pump working underground and enters the well together with an oil pipe, a ground power supply transmits electric energy to the underground electric submersible motor through a transformer, a control screen and a power cable, the electric submersible motor drives the multistage centrifugal pump to rotate, the electric energy is converted into mechanical energy, and well fluid in the oil well is lifted to the ground. Meanwhile, the occurrence of a large number of stratum sand production wells seriously affects the working performance of the electric pump, and the electric pump lies down due to pump blockage, impeller abrasion and the like, thereby causing great economic loss.

The electric pump sand control device in the prior art mainly filters well fluid through structures such as a sieve tube and the like so as to solve the problems. In actual use, however, the screen is prone to plugging, which can cause the electric pump to lie down in the well.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides an electric pump sand control device to solve the problem that sand control device's screen pipe blockked up easily among the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides an electric pump accuse sand device, oil pipe's the other end has cup jointed the crossover sub through awl thread seal, just the crossover sub is inside to have cup jointed the sand setting pipe through the internal thread seal cover, just the crossover sub surface has cup jointed the sand blocking sleeve through the external screw thread, just oil pipe, sand blocking sleeve and sand setting pipe all set up in the cover intraductally.

As an optimized proposal of the utility model, the sand setting pipe is a tubular structure with a circulating hole on the top end.

As a preferred scheme of the utility model, the sand blocking sleeve with form the space that rises between the sleeve pipe.

As an optimized proposal of the utility model, the pore wall of the circulation hole is arc-shaped, and the two sides of the pore wall of the circulation hole are provided with V-shaped drainage grooves.

As an optimal scheme of the utility model the sand blocking sleeve inner wall is equidistant to be equipped with a plurality of sand recesses of depositing.

The utility model discloses an embodiment has following advantage:

the utility model discloses make well liquid at crossover sub, hinder the semi-closed structure inner loop that sand cover and sand setting pipe formed and flow, the liquid velocity of flow after partial liquid flows through the circulation reduces, silt in the liquid that the velocity of flow reduces takes place to subside under the effect of self gravity, and most silt is wrapped up in by the liquid that the quick circulation flows and is held by the arms, so far the slower liquid of velocity of flow progressively upwards permeates the back and carry to charge pump department, reach the mesh to the charge pump department well liquid accuse sand that is in the top, this scheme need not to use filter material such as screen pipe, so there is not the risk that blocks up the screen pipe, greatly reduced the emergence that the charge pump laid the well condition.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a sand-blocking sleeve according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a circulation hole in the embodiment of the present invention.

In the figure:

1-an oil pipe; 2-a crossover joint; 3-a sand blocking sleeve; 4-a sand setting pipe; 5-sleeving a pipe; 6-internal thread; 7-external threads; 8-circulation holes; 9-a rising gap; 10-V-shaped drainage grooves; 11-sand storage groove.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides an electric pump accuse sand device, including oil pipe 1 and sleeve pipe 5, oil pipe 1's one end is passed through awl screw and motor tail sealing connection, just oil pipe 1's the other end has cup jointed crossover sub 2 through awl screw seal cover, just crossover sub 2 is inside to have cup jointed sand setting pipe 4 through internal thread 6 is sealed, just crossover sub 2 surfaces has cup jointed through external screw thread 7 and has hindered sand cover 3, just oil pipe 1, hinder sand cover 3 and sand setting pipe 4 all set up in sleeve pipe 5.

The principle of the utility model lies in that, make the interior well liquid of sleeve pipe 5 upwards flow through latent oily charge pump, partial well liquid upward movement gets into in sand setting pipe 4, because the top of sand setting pipe 4 is closed by crossover sub 2, so well liquid upward movement earlier, strike crossover sub 2 back side motion, strike crossover sub 2 back through all the other well liquids through sand blocking sleeve 3 back and to inboard flow, make well liquid in the semi-closed structure inner loop that crossover sub 2, sand blocking sleeve 3 and sand setting pipe 4 formed flow, the liquid velocity of flow after the part circulation flow reduces, silt in the liquid that the velocity of flow reduces takes place to subside under the effect of self gravity, and most silt is wrapped up by the liquid of quick circulation flow, so far, the liquid that the velocity of flow is slower upwards infiltration step by step, through rising space 9 until on crossover sub 2; the well fluid with the higher flow velocity can carry more sand substances and moves downwards by changing the flow direction of the well fluid carrying more sand substances, so that the well fluid with the lower flow velocity and carrying less sand substances rises, and the purpose of controlling sand of the well fluid above the conversion joint 2 is achieved.

Wherein, the sand setting pipe 4 is a tubular structure with a top end provided with a circulation hole 8.

The circulation holes 8 allow the well fluid to flow out from the circulation holes 8 to the side after impacting the conversion joint 2.

As shown in fig. 2 and 3, a rising gap 9 is formed between the sand-blocking sleeve 3 and the sleeve 5, the hole wall of the circulation hole 8 is arc-shaped, V-shaped drainage grooves 10 are arranged on two sides of the hole wall of the circulation hole 8, and a plurality of sand storage grooves 11 are arranged on the inner wall of the sand-blocking sleeve 3 at equal intervals.

Because the sand material is easier to pass through a streamline structure, the hole wall of the circulation hole 8 is arc-shaped so as to prevent the sand material from blocking the circulation hole 8, and the V-shaped drainage grooves 10 are arranged to accelerate the sand material to flow towards the lower parts of two sides, and also to effectively prevent the sand material from blocking the circulation hole 8.

The friction force between the flowing sand substance and the inner wall of the sand blocking sleeve 3 is increased by arranging the sand storage groove 11, so that part of the sand substance is precipitated in the sand storage groove 11, and the purpose of controlling the sand is achieved.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides an electric pump sand control device, its characterized in that includes oil pipe (1) and sleeve pipe (5), the one end of oil pipe (1) is through awl screw thread and motor tail sealing connection, just the other end of oil pipe (1) has cup jointed crossover sub (2) through awl screw thread seal cover, just crossover sub (2) inside has cup jointed sand setting pipe (4) through internal thread (6) seal, just sand blocking sleeve (3) have been cup jointed through external screw thread (7) on crossover sub (2) surface, just oil pipe (1), sand blocking sleeve (3) and sand setting pipe (4) all set up in sleeve pipe (5).

2. The electric pump sand control device according to claim 1, wherein the sand trap (4) is a tubular structure with a circulation hole (8) at the top end.

3. An electric pump sand control device according to claim 2, characterized in that the sand blocking sleeve (3) forms an ascending interspace (9) with the jacket tube (5).

4. An electric pump sand control device according to claim 2, characterized in that the wall of the circulation hole (8) is arc-shaped, and V-shaped drainage grooves (10) are arranged on both sides of the wall of the circulation hole (8).

5. An electric pump sand control device according to claim 3, characterized in that a plurality of sand storage grooves (11) are arranged on the inner wall of the sand-blocking sleeve (3) at equal intervals.