CN216277830U

CN216277830U - External shunt decompression type precise sand control pipe

Info

Publication number: CN216277830U
Application number: CN202122516782.2U
Authority: CN
Inventors: 张卉; 刘元琨; 夏柏华; 唐玉龙; 李建; 钱忠葆; 刘峰
Original assignee: Taizhou Youheng Oil And Gas Engineering Service Co ltd
Current assignee: Taizhou Youheng Oil And Gas Engineering Service Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-12
Anticipated expiration: 2031-10-19

Abstract

The utility model belongs to the technical field of sand control pipes, and discloses an external shunt decompression type precise sand control pipe which comprises an outer layer pipeline and a filter layer, the filter layer is positioned inside the outer layer pipeline, the two ends of the outer layer pipeline are respectively provided with a first pair of seams and a second pair of seams, the thickness sum of the first pair of seams and the second pair of seams is the same as the thickness of the outer layer pipeline, the surface wall of the outer layer pipeline is provided with an oil inlet hole, the outer layer pipeline is formed by welding stainless steel plate threads, the first pair of seams and the second pair of seams are respectively arranged at the two ends of the stainless steel plate, the stainless steel plate threads are bent into a pipeline shape, the first butt-joint seam and the second butt-joint seam are mutually contacted, so that the stress point appears after the stainless steel plate is bent, the stainless steel plate is additionally bent into a barrel, but the butt joint is the stability of the welding part, so that the dislocation condition caused by the resetting of the stainless steel plate due to the stress of the stainless steel plate before welding is avoided.

Description

External shunt decompression type precise sand control pipe

Technical Field

The utility model belongs to the technical field of sand control pipes, and particularly relates to an external shunt decompression type precise sand control pipe.

Background

Because China's loose sandstone reservoir distribution range is large, the reserve is large, the output takes the important position, but under this kind of geology, the oil well will appear the situation of sand production while exploiting the petroleum, therefore, while exploiting the petroleum, on one hand, should aim at oil reservoir and oil well condition, choose well cementation, completion mode correctly, formulate the rational exploitation measure, control the production pressure difference, limit the seepage velocity, strengthen the management of the oil well of sand producing zone, avoid the induced flow measure of the strong pumping as far as possible; on the other hand, according to the requirements of an oil layer and a mining process, a corresponding sand control process technology is adopted to ensure the normal production of an oil well, and a sand control pipe is used in most of the existing methods.

The seam flushing of the existing sand control pipe can adopt straight seam welding along the axial direction of the pipe body; unique crack spiral distribution adopts spiral welding to form, has obviously improved filter sleeve intensity, but the position of crack butt joint is owing to do not borrow the power point, and the condition of dislocation appears consequently easily, influences the welding effect, and the sand control pipe need take out after using in small-size oil well clears up it to this clearance disintegrating slag does not influence next time and uses, and should not clear up behind the inside incomplete disintegrating gravel of sand control pipe structure that now uses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external shunt decompression type precise sand control pipe, which solves the problems that the existing sand control pipe is easy to misplace and difficult to clean the internal gravel during welding.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an outer reposition of redundant personnel decompression formula precision sand control pipe, includes outer pipeline and filter layer, and the filter layer is located the inside of outer pipeline, first butt joint seam and second butt joint seam have been seted up respectively to the both ends of outer pipeline, and the sum of the thickness of first butt joint seam and second butt joint seam is the same with the thickness of outer pipeline, the oilhole has been seted up into to the table wall of outer pipeline.

Preferably, the filter layer comprises a first filter screen, a second filter screen and a third filter screen, and the second filter screen is located between the first filter screen and the third filter screen.

Preferably, first filter screen, second filter screen and third filter screen all are hollow cylinder, the ring of sealing is installed to the one end of outer pipeline.

Preferably, seal the ring and keep away from the one end of outer pipeline and install the connector, the inside of first filter screen is provided with oil pipe.

Preferably, an oil outlet is formed in the surface wall of the oil pipe, and a rolling strip is arranged between the oil pipe and the first filter screen.

Preferably, the rolling bars are in a hollow cylindrical shape, and the oil outlets are distributed in a spiral shape.

Compared with the prior art, the utility model has the following beneficial effects:

(1) when the outer-layer pipeline is used, the stainless steel plate is bent into a pipeline shape in a threaded manner, so that the first butt joint seam and the second butt joint seam are mutually contacted, an acting point appears after the stainless steel plate is bent, the bending into a barrel is increased, but the butt joint is the stability of a welding part, the dislocation condition caused by the resetting of the stainless steel plate due to the stress of the stainless steel plate before welding is avoided, and the welding accuracy is improved.

(2) The rolling strip is arranged between the oil pipe and the first filter screen, when the sand prevention pipe is blocked in use, the sand prevention pipe is taken out from the ground, the oil pipe can be rotated in the sand prevention pipe by virtue of the rolling strip, and the structure blocked by gravel in the sand prevention pipe is changed by changing the position between the oil pipe and the filter screen, so that the gravel structure is changed, the stability is lost, the sand prevention pipe falls off from the sand prevention pipe, and the cleaning effect is more thorough by matching with a water gun for washing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the outer tube of the present invention after deployment;

FIG. 3 is a front view of the oil pipe of the present invention;

in the figure: 1. an oil pipe; 2. rolling; 3. a first filter screen; 4. a second filter screen; 5. a third filter screen; 6. an outer pipe; 7. an oil inlet hole; 8. a first pair of seams; 9. a second pair of seams; 10. an oil outlet; 11. a sealing ring; 12. a connecting head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides an outer reposition of redundant personnel decompression formula precision sand control pipe, including outer pipeline 6 and filter layer, outer pipeline 6 is formed around rolling up the welding for the corrosion resistant plate material, adopt the straight seam welding, strengthen its stable structure, and the filter layer is located outer pipeline 6's inside, first pair of seam 8 and second pair seam 9 have been seted up respectively to outer pipeline 6's both ends, and first pair seam 8 and second pair seam 9's thickness sum is the same with outer pipeline 6's thickness, oilhole 7 has been seted up into to outer pipeline's table wall, first pair seam 8 and second pair seam 9 mutual contact form the impetus when outer pipeline 6 is rolled up, the stability of welding part is treated in the increase.

Further, the filter layer includes first filter screen 3, second filter screen 4 and third filter screen 5, and second filter screen 4 is located between first filter screen 3 and third filter screen 5, and first filter screen 3, second filter screen 4 and third filter screen 5 are strainer, well filter screen and coarse filter screen respectively, adopt multiple filterable mode to separate oil and grit.

Furthermore, the first filter screen 3, the second filter screen 4 and the third filter screen 5 are all in a hollow cylindrical shape, one end of the outer pipeline 6 is provided with a sealing ring 11, the sealing ring 11 cuts the outer pipeline 6 and seals the outer pipeline simultaneously, and scattering of the outer pipeline due to rebounding is avoided.

Specifically, the end of the sealing ring 11, which is far away from the outer-layer pipeline 6, is provided with a connector 12, an oil pipe 1 is arranged inside the first filter screen 3, the oil pipe 1 is arranged on the innermost layer of the sand control pipe, and oil circulates from the inside of the oil pipe 1.

It is worth to say that an oil outlet 10 is opened to the surface wall of oil pipe 1, and is provided with the rolling strip 2 between oil pipe 1 and the first filter screen 3, and the surface wall and the oil pipe 1 of rolling strip 2 are in contact with first filter screen 3, and have set up a plurality ofly, are cyclic array distribution with the focus of oil pipe 1, reduce the friction between oil pipe 1 and the filter screen for oil pipe 1 can rotate.

Further, the rolling bars 2 are hollow cylindrical, and the oil outlets 10 are spirally distributed.

The working principle and the using process of the utility model are as follows: when the utility model is used, an oil inlet hole 7 is arranged on the surface wall of a stainless steel plate, then a first pair of seams 8 and an oil outlet 10 are arranged on two sides of the stainless steel plate, the stainless steel plate is spirally bent by a tube welding machine, so that the first pair of seams 8 and the second pair of seams 9 are contacted with each other to form an outer-layer pipeline 6, the bent part but not welded is provided with an acting point due to the first pair of seams 8 and the second pair of seams 9 on two sides of the outer-layer pipeline 6, therefore, the utility model is more stable, can counteract partial stress of the stainless steel plate, avoids the influence of the springback of the stainless steel plate caused by the stress on the outer-layer pipeline 6 on the forming effect of the outer-layer pipeline 6, after welding is finished, a sealing ring 11 is used for sealing the tail end of the stainless steel plate, then a connector 12 is arranged, a first filter screen 3, a second filter screen 4 and a third filter screen 5 are arranged on the inner wall of the outer-layer pipeline 6, so that the second filter screen 4 is positioned inside the first filter screen 3 is positioned inside the second filter screen 4, then at the internally mounted oil pipe 1 of first filter screen 3, install the ribbon roll 2 between oil pipe 1 and first filter screen 3, block up when the sand control pipe, when needing to clear up it, rotate oil pipe 1 with the help of ribbon roll 2, make the position change between oil pipe 1 and the first filter screen 3, thereby make the gravel lose original fixed knot to construct and drop with this, at the bottom of the earth during operation, the oil gets into from going into oilhole 7, heavy filtration through the filter layer has avoided the infringement of gravel, permeate oil pipe 1's inside from oil-out 10 after filtering, at last by the oil recovery equipment pump away.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an accurate sand control pipe of reposition of redundant personnel decompression formula outward which characterized in that: including outer pipeline (6) and filter layer, and the filter layer is located the inside of outer pipeline (6), first butt joint seam (8) and second butt joint seam (9) have been seted up respectively to the both ends of outer pipeline (6), and the thickness of first butt joint seam (8) and second butt joint seam (9) sum is the same with the thickness of outer pipeline (6), oilhole (7) have been seted up into to the table wall of outer pipeline.

2. The external shunt decompression type precise sand control pipe according to claim 1, characterized in that: the filter layer comprises a first filter screen (3), a second filter screen (4) and a third filter screen (5), and the second filter screen (4) is positioned between the first filter screen (3) and the third filter screen (5).

3. The external shunt decompression type precise sand control pipe according to claim 2, wherein: first filter screen (3), second filter screen (4) and third filter screen (5) all are hollow cylinder, seal ring (11) are installed to the one end of outer pipeline (6).

4. The external shunt decompression type precise sand control pipe according to claim 3, wherein: seal ring (11) and keep away from the one end of outer pipeline (6) and install connector (12), the inside of first filter screen (3) is provided with oil pipe (1).

5. The external shunt decompression type precise sand control pipe according to claim 4, wherein: an oil outlet (10) is formed in the surface wall of the oil pipe (1), and a rolling strip (2) is arranged between the oil pipe (1) and the first filter screen (3).

6. The external shunt decompression type precise sand control pipe according to claim 5, wherein: the rolling strips (2) are in a hollow cylindrical shape, and the oil outlets (10) are distributed in a spiral shape.