CN116066032A - Circular seam type sand filtering pipe - Google Patents
Circular seam type sand filtering pipe Download PDFInfo
- Publication number
- CN116066032A CN116066032A CN202310207362.7A CN202310207362A CN116066032A CN 116066032 A CN116066032 A CN 116066032A CN 202310207362 A CN202310207362 A CN 202310207362A CN 116066032 A CN116066032 A CN 116066032A
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- China
- Prior art keywords
- fixedly connected
- sand screen
- built
- sand
- hole
- Prior art date
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- 239000004576 sand Substances 0.000 title claims abstract description 193
- 238000001914 filtration Methods 0.000 title claims abstract description 82
- 238000004140 cleaning Methods 0.000 claims abstract description 40
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 238000009287 sand filtration Methods 0.000 claims 2
- 238000005452 bending Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003027 oil sand Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
Abstract
The invention discloses a circular seam type sand filtering pipe, which particularly relates to the field of sand filtering, and comprises a lower sand filtering protective shell, wherein the top end of the lower sand filtering protective shell is fixedly connected with a lower threaded connection end, one end of the lower sand filtering protective shell, which is far away from the lower threaded connection end, is fixedly connected with a central connecting pipe, the top end of the central connecting pipe is fixedly connected with an inner hollow mounting frame, the top end of the inner hollow mounting frame is fixedly connected with a first built-in sand filtering net, a deflection rod moves upwards through a pull rod with an outer cleaning collar, the outer cleaning collar slides along the surface of the inner hollow mounting frame, the outer cleaning collar changes from a bending state into a normal state through a vertical hole, and when the bristles are led into an inner sand filtering hole and an auxiliary hole, the bristles are enabled to clean the inner sand filtering hole and the auxiliary hole along with the up-down movement of the outer cleaning collar on the surface of the inner hollow mounting frame, so that the self-cleaning function of the sand filtering pipe is improved, and the sand filtering pipe is prevented from being blocked.
Description
Technical Field
The invention relates to the technical field of sand filtering, in particular to a circular seam type sand filtering pipe.
Background
The sand filtering pipe has high integral strength, good filtering performance and wide application range, the well completion pipe column has simple structure and simple and convenient technological process, and takes important position in the well completion of the independent sieve tube, and the conventional sand filtering pipe such as a metal felt sand filtering pipe, a screen type sand filtering pipe, a precise composite sand filtering pipe and the like has the characteristics of strong sand prevention capability, simple and convenient construction and the like.
The existing sand filtering pipe is developed due to the work of heavy oil reservoirs and the like, the common sand filtering pipe has the advantages that the self-cleaning performance is greatly reduced after blockage due to single sand blocking surface, the liquid yield after sand prevention is low, the production efficiency is poor, and the annular seam type sand filtering pipe realizes better sand prevention and self-cleaning effects by utilizing the multi-layer sand filtering surface.
As described in chinese patent No. CN115182706a, micro-pores exist on the wall of the resin filter layer, which can allow the liquid to flow through and block most of sand, and the resin filter layer has the properties of hydrophilicity and oleophobicity, so that the problem of hardening failure caused by oil dirt blockage in the existing structure can be effectively solved, the self-cleaning effect is achieved, and the permeability is enhanced.
The above scheme has the following problems in implementation:
1. although the tiny gaps can flow through the sand, some sand is stuck together due to greasy dirt, and is difficult to clean completely in a state of not being scattered;
2. the self-cleaning performance is greatly reduced due to the blocking of the holes, so that the liquid yield after sand prevention is low.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a circular seam type sand screen, in which when the sand screen is in a stop-use state, an electric telescopic rod is used as a drive, which drives a deflection rod to deflect upwards, the deflection rod drives an external cleaning collar to move upwards through a pull rod, the external cleaning collar slides along the surface of an inner hollow mounting frame, the external cleaning collar drives bristles to change from a bent state to a normal state through vertical holes, and when the bristles are introduced into the inner sand screen and an auxiliary hole, the external cleaning collar moves up and down along with the surface of the inner hollow mounting frame to solve the problems set forth in the above-mentioned background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a girth formula sand filtering pipe, includes lower sand filtering protective housing, the top fixedly connected with lower threaded connection end of lower sand filtering protective housing, the one end fixedly connected with central connecting pipe of lower threaded connection end is kept away from to lower sand filtering protective housing, the first built-in sand filtering net of top fixedly connected with of central connecting pipe, the first built-in sand filtering net is outer resin filter screen, and the auxiliary hole aperture size that its was seted up is unanimous with the aperture size of interior sand filtering hole, and under the normal condition, auxiliary hole keeps unanimous with the center of interior sand filtering hole, then the grit can be got rid of in interior sand filtering hole and the auxiliary hole.
The outer surface of the inner hollow mounting frame is fixedly connected with a positioning lantern ring, the outer surface of the positioning lantern ring is fixedly connected with eight groups of fixed plunger rods, the outer surface of the positioning lantern ring is hinged with four groups of deflection rods through the fixed plunger rods, the two ends of the deflection rods are hinged with pull rods, the top ends of the pull rods are hinged with external cleaning lantern rings, the external cleaning lantern rings are sleeved on the outer surface of the inner hollow mounting frame, the outer surface of the central connecting pipe is hinged with four groups of electric telescopic rods, one ends of the four groups of electric telescopic rods are hinged at the bottom ends of the corresponding deflection rods, the multiunit correspond the surface fixedly connected with rubber go-between of deflection pole, the sand filtering pipe is under the user state, and the deflection pole is through the pull rod with outside clearance lantern ring in the surface slip of cavity mounting bracket to interior sand filtering hole and auxiliary hole's below, causes interior sand filtering hole and auxiliary hole to normally handle the grit, owing to have the gap between outside clearance lantern ring and the interior cavity mounting bracket, and the brush hair of vertical hole installation is in the bending state, and interior cavity mounting bracket can not block it.
In a preferred embodiment, the upper end and the lower end of the first built-in sand screen are fixedly connected with auxiliary connecting rings, one end, away from the external cleaning lantern ring, of the first built-in sand screen is fixedly connected with a limiting spring, one end of the limiting spring is fixedly connected with a second built-in sand screen, and the inner hollow mounting frame is fixedly mounted with the first built-in sand screen and the upper threaded connecting end, so that the sand screen is guaranteed to be in a circular seam type integral state.
In a preferred embodiment, the upper end and the lower end of the second built-in sand screen are fixedly connected with auxiliary rotating rings, the top end of the first built-in sand screen is fixedly connected with an upper threaded connection end through the auxiliary connecting rings, and a plurality of groups of inner sand filtering holes are formed in the surface of the second built-in sand screen.
In a preferred embodiment, the inside fixedly connected with fixed balladeur train of interior sand filtering hole, the inside fixedly connected with telescopic link of fixed balladeur train, the inside sliding connection of fixed balladeur train has spacing slide bar, spacing slide bar fixed mounting is on the top of telescopic link, and in the grit lets in the flexible hole of rubber, the grit extrudees the flexible hole of rubber because the volume is great, and the flexible hole of rubber is rubber preparation, has stronger restorability, and then the flexible hole of rubber drives spacing slide bar in the inside slip of fixed balladeur train through extrusion spring, and the telescopic link is through the flexible distance restriction of self, and then spacing is carried out to the aperture expansion scope of the flexible hole of rubber.
In a preferred embodiment, the top fixedly connected with spring of spacing slide bar, the flexible hole of one end fixedly connected with rubber of spring, be sealed state setting between interior sand filtering hole and the flexible hole of rubber, multiunit vertical hole has been seted up on the surface of outside clearance lantern ring, and interior sand filtering hole is inside to be the cavity, and fixed balladeur train, spacing slide bar, spring and telescopic link are in this cavity, only the spring is connected with the flexible hole of rubber, and the flexible hole of rubber is in and expands or close under the sealed state.
In a preferred embodiment, the brush hair is provided with to multiunit the inside in vertical hole, auxiliary hole has been seted up on the surface of first built-in sand screen, and the quantity in vertical hole is unanimous with interior sand screen hole and auxiliary hole, the through-hole has been seted up on the top of host thread screwed connection end, causes vertical hole to be able to carry out the clearance of lining up to every interior sand screen hole and auxiliary hole, and then has improved the clearance effect.
In a preferred embodiment, the inside fixedly connected with of lower sand filtering protective housing is the hang wall of slope form, is convenient for the separator and circulates, the inner wall of lower threaded connection end has seted up interior circulation wall, when the oil sand volume lets in too much, interior circulation wall can preserve too much oil sand, lets the sand filter slowly handle.
In a preferred embodiment, the first built-in sand screen and the second built-in sand screen are made of resin, the second built-in sand screen is arranged in a sliding state on the surface of the first built-in sand screen, the second built-in sand screen can rotate at the joint of the inner hollow mounting frame by means of the annular sliding rail, the annular sliding rail is arranged on the surface of the inner hollow mounting frame and the surface of the second built-in sand screen, the resin material can be epoxy resin, meanwhile, the built-in sand screen and the second built-in sand screen tightly form a filtering layer through the arrangement, gaps are small, normal filtering requirements can be met, the first built-in sand screen and the second built-in sand screen can reduce the problem of hardening failure caused by greasy dirt blocking due to hydrophilic and oleophobic material characteristics, self-cleaning efficiency is improved, and permeability is enhanced.
The invention has the technical effects and advantages that:
1. when the sand filtering pipe is in a stop use state, the electric telescopic rod is used as a drive, the deflection rod is driven to deflect upwards, the deflection rod drives the external cleaning lantern ring to move upwards through the pull rod, the external cleaning lantern ring slides along the surface of the inner hollow mounting frame, the external cleaning lantern ring changes into a normal state from a press bending state through the vertical hole and the brush hair, and when the brush hair is introduced into the inner sand filtering hole and the auxiliary hole, the brush hair is caused to clean the inner sand filtering hole and the auxiliary hole along with the up-and-down movement of the external cleaning lantern ring on the surface of the inner hollow mounting frame, so that the self-cleaning function of improving the sand filtering pipe is realized, and the blocking of the sand filtering pipe is avoided;
2. when the amount of sand and oil is too large, the second built-in sand screen rotates along the inner hollow mounting frame due to the deflection of impact force between a large amount of sand and oil, and two groups of limiting springs are in ring shape and have one end on the surface of the first built-in sand screen, the auxiliary holes of the first built-in sand screen deviate from the apertures of the inner sand screen, the positions of the corresponding holes between the two deviate, the apertures become smaller, a large amount of sand is prevented from being introduced at the moment, and when the sand and oil are just clamped between the inner sand screen and the auxiliary holes, the sand and the oil are extruded between the inner sand screen and the side walls of the auxiliary holes after being deflected by the positions of the first built-in sand screen and the second built-in sand screen, so that the mixture of sand and oil is loosened and is difficult to adhere to the hole wall for a long time, and the effect of avoiding the influence of single sand filtering is realized;
3. when the grit circulates gradually with flexible hole of rubber, the flexible hole of rubber at this moment shakes subsequent grit owing to spacing slide bar's elasticity, causes the grit to remain throughout and shakes the state, slows down the likelihood that the grit is blocked, and when the brush hair in vertical hole cleared up the flexible hole of rubber simultaneously, the brush hair was to the extrusion of the flexible hole of rubber, caused the flexible hole of rubber to bounce some grit wrapped up in by the oil owing to losing pressure recovery elasticity, avoid the adhesion and can't clear up to cleaning efficiency has been improved.
Drawings
Fig. 1 is a schematic structural view of a lower sand filtering protective shell of the invention.
Fig. 2 is a schematic structural view of a lower threaded connection according to the present invention.
Fig. 3 is an enlarged view of the structure of the portion a of fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of a first built-in sand screen of the present invention.
Fig. 5 is a schematic structural view of the central connection pipe of the present invention.
Fig. 6 is a schematic structural view of the through hole of the present invention.
Fig. 7 is a schematic structural view of a second built-in sand screen of the present invention.
Fig. 8 is an enlarged view of the B part structure of fig. 7 according to the present invention.
Fig. 9 is an enlarged view of the C-section structure of fig. 7 according to the present invention.
The reference numerals are: 1. a lower sand filtering protective shell; 2. a lower thread connecting end; 3. a central connection tube; 4. positioning the lantern ring; 5. an inner hollow mounting rack; 6. an external cleaning collar; 7. a vertical hole; 8. an upper thread connecting end; 9. a deflection lever; 10. a pull rod; 11. a rubber connecting ring; 12. fixing the inserted link; 13. an electric telescopic rod; 14. a first built-in sand screen; 15. a second built-in sand screen; 16. an inner sand filtering hole; 17. a rubber telescopic inner hole; 18. fixing the sliding frame; 19. a spring; 20. a limit slide bar; 21. a telescopic rod; 22. a limit spring; 23. a through hole; 24. an auxiliary swivel; 25. an auxiliary connection ring; 26. an inclined wall; 27. an inner flow wall.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5 of the specification, a circular seam type sand filtering pipe according to an embodiment of the present invention includes a lower sand filtering protecting shell 1, a lower threaded connection end 2 is fixedly connected to a top end of the lower sand filtering protecting shell 1, a central connection pipe 3 is fixedly connected to an end of the lower sand filtering protecting shell 1, which is far away from the lower threaded connection end 2, an inner hollow installation frame 5 is fixedly connected to a top end of the central connection pipe 3, a first built-in sand filtering net 14 is fixedly connected to a top end of the inner hollow installation frame 5, the first built-in sand filtering net 14 is an outer layer resin filtering net, an auxiliary hole is formed, the aperture size of the auxiliary hole is consistent with that of the inner sand filtering hole 16, and in a normal state, the auxiliary hole is consistent with the center of the inner sand filtering hole 16, so that sand and stone can be removed from the inner sand filtering hole 16 and the auxiliary hole;
the outer surface of the inner hollow mounting frame 5 is fixedly connected with a positioning sleeve ring 4, the outer surface of the positioning sleeve ring 4 is fixedly connected with eight groups of fixed plunger rods 12, the outer surface of the positioning sleeve ring 4 is hinged with four groups of deflection rods 9 through the fixed plunger rods 12, the two ends of the deflection rods 9 are hinged with pull rods 10, the top ends of the pull rods 10 are hinged with outer cleaning sleeve rings 6, the outer cleaning sleeve rings 6 are sleeved on the outer surface of the inner hollow mounting frame 5, the outer surface of the central connecting pipe 3 is hinged with four groups of electric telescopic rods 13, one ends of the four groups of electric telescopic rods 13 are hinged at the bottom ends of the corresponding deflection rods 9, the outer surfaces of the groups of corresponding deflection rods 9 are fixedly connected with rubber connecting rings 11, in a use state, the deflection rods 9 slide to the lower parts of inner sand filtering holes 16 and auxiliary holes through the surfaces of the outer cleaning sleeve rings 6 of the inner hollow mounting frame 5 by the pull rods 10, the inner sand filtering holes 16 and the auxiliary holes can be used for normally processing sand, as gaps are formed between the outer cleaning collar 6 and the inner hollow mounting frame 5, bristles mounted on the vertical holes 7 are in a buckling state, the inner hollow mounting frame 5 cannot block the sand filtering holes, when the sand filtering pipe is in a stop state, the electric telescopic rod 13 is used as a drive, the electric telescopic rod drives the deflecting rod 9 to deflect upwards, the deflecting rod 9 moves upwards through the pull rod 10 with the outer cleaning collar 6, the outer cleaning collar 6 slides along the surface of the inner hollow mounting frame 5, the outer cleaning collar 6 changes from the buckling state into a normal state through the vertical holes 7 with bristles, when the bristles are led into the inner sand filtering holes 16 and the auxiliary holes, the bristles are enabled to clean the inner sand filtering holes 16 and the auxiliary holes along with the up-down movement of the surface of the inner hollow mounting frame 5, so that the self-cleaning function of the sand filtering pipe is improved, avoiding the blocking of the sand filtering pipe.
Further, the inside of multiunit vertical hole 7 is provided with the brush hair, and the auxiliary hole has been seted up on the surface of first built-in sand screen 14, and vertical hole 7 quantity and interior sand screen 16 and auxiliary hole unanimity, and through-hole 23 has been seted up on the top of upper thread connection 8, causes vertical hole 7 to be able to align the clearance to every interior sand screen 16 and auxiliary hole, and then has improved the cleaning effect.
Referring to fig. 2-4 of the specification, the upper end and the lower end of the first built-in sand screen 14 are fixedly connected with auxiliary connecting rings 25, one end of the first built-in sand screen 14, which is far away from the external cleaning collar 6, is fixedly connected with a limiting spring 22, one end of the limiting spring 22 is fixedly connected with a second built-in sand screen 15, and the inner hollow mounting frame 5 is fixedly mounted with the first built-in sand screen 14 and the upper threaded connecting end 8, so that the sand screen is guaranteed to be in a circular seam type integral state.
When the amount of sand and oil is too large, when the second built-in sand screen 15 deflects due to the impact force between a large amount of sand and oil, the second built-in sand screen 15 rotates along the inner hollow mounting frame 5, and the two groups of limiting springs 22 are annular, one end of each limiting spring is fixedly arranged on the surface of the first built-in sand screen 14, the other end of each limiting spring is fixedly arranged on the surface of the second built-in sand screen 15, the limiting springs 22 are arranged at the bottom ends and the top ends of the second built-in sand screen 15 and the first built-in sand screen 14, gaps between the second built-in sand screen 15 and the first built-in sand screen 14 are avoided, when the apertures of the auxiliary holes of the first built-in sand screen 14 and the inner sand screen 16 deviate, the positions of the corresponding holes between the first built-in sand screen 14 deviate, the apertures become small, a large amount of sand and oil are avoided to be just blocked between the inner sand screen 16 and the auxiliary holes, the inner sand screen 16 and the auxiliary holes are pressed after the positions of the first built-in sand screen 14 and the second built-in sand screen 15 deviate, the mixture of sand and the oil are difficult to be adhered to the walls for a long time, and the filtering effect is avoided.
Further, the upper and lower ends of the second built-in sand screen 15 are fixedly connected with auxiliary swivel rings 24, the top end of the first built-in sand screen 14 is fixedly connected with an upper threaded connection end 8 through an auxiliary connection ring 25, a plurality of groups of inner sand filtering holes 16 are formed in the surface of the second built-in sand screen 15, a spring 19 is fixedly connected to the top end of a limit sliding rod 20, a rubber telescopic inner hole 17 is fixedly connected to one end of the spring 19, the inner sand filtering holes 16 and the rubber telescopic inner hole 17 are arranged in a sealing state, a plurality of groups of vertical holes 7 are formed in the surface of the external cleaning lantern ring 6, the inner sand filtering holes 16 are hollow, a fixed sliding frame 18, the limit sliding rod 20, the spring 19 and the telescopic rod 21 are located in the hollow, only the spring 19 is connected with the rubber telescopic inner hole 17, and the rubber telescopic inner hole 17 is expanded or closed in the sealing state.
Referring to fig. 1-8 of the specification, the first built-in sand screen 14 and the second built-in sand screen 15 are made of resin, the second built-in sand screen 15 is arranged on the surface of the first built-in sand screen 14 in a sliding state, the second built-in sand screen 15 can rotate at the joint of the inner hollow installation frame 5 by means of the annular sliding rail, the annular sliding rail is arranged on the surfaces of the inner hollow installation frame 5 and the second built-in sand screen 15, the resin material can be epoxy resin, meanwhile, the filtering layers formed by the first built-in sand screen 14 and the second built-in sand screen 15 through the arrangement enable the inner sand screen holes 16 and the auxiliary holes to be tight, gaps are small, normal filtering requirements can be met, and the first built-in sand screen 14 and the second built-in sand screen 15 can reduce the problem of hardening failure caused by oil dirt blockage due to material characteristics hydrophilic and oleophobic, improve self-cleaning efficiency and enhance permeability.
Further, the inside fixedly connected with of lower sand filtering protective housing 1 is the inclined wall 26 of slope form, and the separator of being convenient for circulates, and the inner wall of lower threaded connection end 2 has seted up interior circulation wall 27, and when the oil sand volume was too much lets in, interior circulation wall 27 can preserve too much oil sand, lets the sand filter slowly handle.
The inside fixedly connected with fixed balladeur train 18 of interior sand filtering hole 16, fixed balladeur train 18's inside fixedly connected with telescopic link 21, fixed balladeur train 18's inside sliding connection has spacing slide bar 20, spacing slide bar 20 fixed mounting is on telescopic link 21's top, when the grit lets in the flexible hole 17 of rubber, the grit is because the volume is great, extrude the flexible hole 17 of rubber, flexible hole 17 of rubber is rubber preparation, there is stronger restorability, then flexible hole 17 of rubber drives spacing slide bar 20 at fixed balladeur train 18's inside through extrusion spring 19 and slides, telescopic link 21 limits through self flexible distance, then the aperture expansion scope of flexible hole 17 of rubber carries out spacingly, and when the grit circulates gradually with flexible hole 17 of rubber, the flexible hole 17 of rubber at this moment shakes subsequent grit because of spacing slide bar 20's elasticity, make the grit remain the shock state all the time, the possibility that the grit is blocked, simultaneously when the brush hair of vertical hole 7 clear up flexible hole 17 of rubber, the extrusion of flexible hole 17 of rubber, make flexible hole 17 of rubber, because lose the elasticity that pressure resumes, the grit that some is wrapped up in by the oil, thereby the efficiency of cleaning up can't be avoided.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather, any modifications, equivalent arrangements, improvements, etc., which fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a girth formula sand screen, includes lower sand screen protective housing (1), its characterized in that: the top end of the lower sand filtering protection shell (1) is fixedly connected with a lower threaded connection end (2), one end, far away from the lower threaded connection end (2), of the lower sand filtering protection shell (1) is fixedly connected with a central connecting pipe (3), the top end of the central connecting pipe (3) is fixedly connected with an inner hollow installation frame (5), and the top end of the inner hollow installation frame (5) is fixedly connected with a first built-in sand filtering net (14);
the outer surface of the inner hollow mounting frame (5) is fixedly connected with a positioning sleeve ring (4), the outer surface of the positioning sleeve ring (4) is fixedly connected with eight groups of fixed inserted bars (12), the outer surface of the positioning sleeve ring (4) is hinged with four groups of deflection rods (9) through the fixed inserted bars (12), two ends of each deflection rod (9) are hinged with pull rods (10), the top ends of the pull rods (10) are hinged with an external cleaning sleeve ring (6), the outer cleaning collar (6) is sleeved on the outer surface of the inner hollow mounting frame (5), four groups of electric telescopic rods (13) are hinged to the outer surface of the central connecting pipe (3), one ends of the four groups of electric telescopic rods (13) are hinged to the bottom ends of the corresponding deflection rods (9), and a plurality of groups of outer surface fixing rings (11) corresponding to the deflection rods (9) are fixedly connected.
2. A girth type sand screen as claimed in claim 1, wherein: the upper end and the lower end of the first built-in sand screen (14) are fixedly connected with auxiliary connecting rings (25), one end, away from the external cleaning lantern ring (6), of the first built-in sand screen (14) is fixedly connected with a limiting spring (22), and one end of the limiting spring (22) is fixedly connected with a second built-in sand screen (15).
3. A girth type sand screen as claimed in claim 2, wherein: the upper end and the lower end of the second built-in sand screen (15) are fixedly connected with auxiliary swivel rings (24), the top end of the first built-in sand screen (14) is fixedly connected with an upper threaded connection end (8) through an auxiliary connection ring (25), and a plurality of groups of inner sand screen holes (16) are formed in the surface of the second built-in sand screen (15).
4. A girth type sand screen according to claim 3, wherein: the inside fixedly connected with fixed carriage (18) of interior sand filtration hole (16), the inside fixedly connected with telescopic link (21) of fixed carriage (18), the inside sliding connection of fixed carriage (18) has spacing slide bar (20), spacing slide bar (20) fixed mounting is on the top of telescopic link (21).
5. A girth type sand screen as claimed in claim 4, wherein: the top fixedly connected with spring (19) of spacing slide bar (20), the flexible hole (17) of one end fixedly connected with rubber of spring (19), be sealed state setting between interior sand filtration hole (16) and the flexible hole (17) of rubber, multiunit vertical hole (7) have been seted up on the surface of outside clearance lantern ring (6).
6. A girth type sand screen as claimed in claim 5, wherein: the inside of multiunit vertical hole (7) is provided with the brush hair, auxiliary hole has been seted up on the surface of first built-in sand screen (14), and the quantity of vertical hole (7) is unanimous with interior sand screen hole (16) and auxiliary hole, through-hole (23) have been seted up on the top of upper thread connection end (8).
7. A girth type sand screen as claimed in claim 1, wherein: the inside fixedly connected with of lower sand filtering protective housing (1) is inclined wall (26) of slope form, interior circulation wall (27) have been seted up to the inner wall of lower threaded connection end (2).
8. A girth type sand screen as claimed in claim 6, wherein: the first built-in sand screen (14) and the second built-in sand screen (15) are made of resin, the second built-in sand screen (15) is arranged on the surface of the first built-in sand screen (14) in a sliding state, and annular sliding rails are arranged on the surfaces of the inner hollow installation frame (5) and the second built-in sand screen (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310207362.7A CN116066032B (en) | 2023-03-07 | 2023-03-07 | Circular seam type sand filtering pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310207362.7A CN116066032B (en) | 2023-03-07 | 2023-03-07 | Circular seam type sand filtering pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116066032A true CN116066032A (en) | 2023-05-05 |
| CN116066032B CN116066032B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310207362.7A Active CN116066032B (en) | 2023-03-07 | 2023-03-07 | Circular seam type sand filtering pipe |
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| CN (1) | CN116066032B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116658130A (en) * | 2023-07-31 | 2023-08-29 | 招远金河石油设备技术开发有限公司 | Anti-blocking self-cleaning sand filtering pipe for oil well |
Citations (11)
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| CN116658130B (en) * | 2023-07-31 | 2023-10-20 | 招远金河石油设备技术开发有限公司 | Anti-blocking self-cleaning sand filtering pipe for oil well |
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|---|---|
| CN116066032B (en) | 2023-06-16 |
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Denomination of invention: A type of annular seam sand filter tube Effective date of registration: 20231227 Granted publication date: 20230616 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2023980075105 |
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