CN112343563A - Precision-adjustable composite sand control screen pipe - Google Patents
Precision-adjustable composite sand control screen pipe Download PDFInfo
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- CN112343563A CN112343563A CN202011213512.8A CN202011213512A CN112343563A CN 112343563 A CN112343563 A CN 112343563A CN 202011213512 A CN202011213512 A CN 202011213512A CN 112343563 A CN112343563 A CN 112343563A
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- 239000004576 sand Substances 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000004804 winding Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 3
- 238000003032 molecular docking Methods 0.000 claims 3
- 125000003003 spiro group Chemical group 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000012216 screening Methods 0.000 abstract description 14
- 238000009417 prefabrication Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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Abstract
The invention discloses a composite sand control screen pipe with adjustable precision, which comprises a base pipe, a sand control mechanism with adjustable precision and a connecting mechanism, wherein a plurality of screen holes are uniformly formed in the pipe wall of the middle part of the base pipe; the sand control mechanism with adjustable precision comprises a first annular connecting seat, a second annular connecting seat, a wire winding, a guide sleeve, an annular abutting seat and an adjusting nut, and the connecting mechanism comprises a fixing sleeve, a connecting cylinder, a locking nut, an annular check ring, a first sealing ring and a second sealing ring. The invention has the advantages that the screening precision can be adjusted, the prefabrication according to an oil reservoir is not needed, the screening precision can still be changed after the manufacture, the application range is larger, the large-scale prefabrication in advance of a processing plant is facilitated, the phenomenon that the working period needs to be overtime and overtime frequently during the processing can be avoided, the larger working pressure and working strength are avoided for production personnel, the installation and connection are more convenient, the sealing performance of the installed connection part is better, and the use requirement can be met.
Description
Technical Field
The invention relates to the technical field of sand control equipment for oil and gas wells, in particular to a composite sand control screen pipe with adjustable precision.
Background
At present, most oil and gas reservoirs in the world are developed in the middle and later stages, and the sand production problem generally exists in the development process. The sand production has great influence on the exploitation of oil and gas reservoirs, and mainly comprises the production reduction and even production stop of oil and gas wells; increasing wear on downhole and surface equipment; the most serious is the damage to the casing and finally the abandonment of the oil and gas well. In response to such problems, sand control is the most effective way to prevent the effects on the normal production of the oil and gas well by controlling the sand production of the oil and gas well. The screening precision has great influence on the recovery ratio of the oil-gas well, and the proper screening precision can increase the recovery ratio of the oil-gas well.
In recent years, sand control methods mainly comprise gravel filling, chemical sand control, mechanical sand control and the like, about 80 percent of oil and gas wells around the world adopt a mechanical sand control method to control sand, the mechanical sand control is dominant in the sand control method, and a sieve tube in the mechanical sand control is a core component. The sand control screen pipe adopted in the oil and gas field at present mainly comprises a plurality of screen pipes such as a slotted screen pipe, a wire-wound screen pipe, a composite screen pipe and the like, and the screening precision of the screen pipes is determined by the manufacturing production and is fixed and not adjustable. But the sand grain size is different because the oil and gas reservoir is different, and the required screening precision is also different. Therefore, if the sieve tube is used, the sieve tube must be prefabricated according to oil reservoirs and cannot be changed once being manufactured, so that the application range of the sieve tube is narrow, large-scale prefabrication in advance by a processing plant is not facilitated, overtime and overtime work is often required during processing, and greater working pressure and working strength are caused to production personnel; in addition, the existing sieve tube is troublesome to install, and the sealing performance of the joint after installation is poor, so that the use requirement is difficult to meet.
Therefore, the composite sand control screen pipe with adjustable precision is provided.
Disclosure of Invention
The technical task of the invention is to provide a composite sand control screen pipe with adjustable precision, which can adjust the screening precision, does not need to be prefabricated according to oil reservoirs, can still change the screening precision after manufacturing, has a large application range, is beneficial to large-scale prefabrication in advance for processing plants, can avoid the phenomenon that working hours often need to be overtime and overtime, further avoids causing great working pressure and working strength to production personnel, is convenient to install and connect, has good sealing performance of the joints after installation, and can meet the use requirements to solve the problems.
The technical scheme of the invention is realized as follows:
an adjustable-accuracy composite sand control screen, comprising:
the screen mesh structure comprises a base pipe, wherein two ends of the base pipe are both of an open structure, a plurality of screen meshes are uniformly arranged on the pipe wall of the middle part of the base pipe, a threaded part is arranged outside one end of the base pipe, a connecting flange is welded at the other end of the base pipe, and a plurality of mounting holes are also formed in the connecting flange close to the edge of the connecting flange;
the sand control mechanism with adjustable precision comprises a first annular connecting seat, a second annular connecting seat, a wire winding, a guide sleeve, an annular abutting seat and an adjusting nut, wherein the first annular connecting seat is slidably sleeved outside the base tube, the first annular connecting seat is close to the thread part, the second annular connecting seat is fixedly sleeved outside the base tube, the second annular connecting seat is close to the connecting flange plate, the wire winding is fixedly arranged between the second annular connecting seat and the first annular connecting seat and spirally surrounds the base tube, the wire winding completely covers the outer parts of the sieve holes, the wire winding is made of stainless steel, the guide sleeve is fixedly arranged on one side surface of the first annular connecting seat, which faces away from the second annular connecting seat, the guide sleeve is further sleeved outside the base pipe in a sliding mode, the annular abutting base is fixedly installed at the end portion, back to the first annular connecting base, of the guide sleeve, the annular abutting base is further sleeved outside the base pipe in a sliding mode, the adjusting nut is sleeved on the threaded portion in a threaded mode, and the end face, facing the first annular connecting base, of the adjusting nut is abutted to the end face, back to the first annular connecting base, of the annular abutting base;
the connecting mechanism comprises a fixed sleeve, a connecting cylinder, a locking nut, an annular retainer ring, a first sealing ring and a second sealing ring, the fixed sleeve is arranged at one end of the base pipe, which is far away from the connecting flange plate, the fixed sleeve is screwed on the threaded part, a first annular mounting groove is also formed in the fixed sleeve, the connecting cylinder is fixedly arranged at the end part, which is far away from the adjusting nut, of the fixed sleeve, the connecting cylinder is communicated with the inside of the fixed sleeve, the locking nut is rotatably sleeved on the outside of the connecting cylinder, a second annular mounting groove is formed in the inside of the locking nut, the annular retainer ring is fixedly arranged at the end part, which is far away from the fixed sleeve, of the connecting cylinder, the annular retainer ring is positioned in the locking nut, and the annular retainer ring is used for preventing the locking nut from falling off from the outside of the connecting, the first sealing ring is fixedly arranged inside the first annular mounting groove, the second sealing ring is fixedly arranged inside the second annular mounting groove, and the second sealing ring and the first sealing ring are made of high-temperature-resistant rubber.
Preferably, still include protection machanism, protection machanism includes a plurality of circular through-holes and a plurality of cavity pole, and is a plurality of circular through-hole all sets up on the second annular connecting seat, and is a plurality of circular through-hole centers on the center pin of second annular connecting seat is angle arrangement such as hoop, and is a plurality of cavity pole movable mounting respectively is a plurality of the inside of circular through-hole, it is a plurality of the cavity pole all is on a parallel with the parent tube sets up, and is a plurality of the one end of cavity pole all with first annular connecting seat orientation a side fixed connection of second annular connecting seat.
Preferably, the protection machanism still includes annular fixing base and a plurality of guide bar, the fixed suit of annular fixing base is in the outside of parent tube, just the annular fixing base is located the second annular connecting seat with between the flange dish, it is a plurality of the equal fixed mounting of guide bar is in annular fixing base orientation on the side of second annular connecting seat, and a plurality of the guide bar centers on the center pin of annular fixing base is angle arrangement such as hoop, and is a plurality of the guide bar is kept away from the equal activity of one end of annular fixing base stretches into a plurality of inside the other end of cavity pole.
Preferably, the number of the circular through holes, the number of the hollow circular rods, and the number of the guide rods are the same.
Preferably, the first annular connecting seat, the second annular connecting seat, the annular fixing seat, the hollow round rod and the guide rod are all made of stainless steel.
Preferably, the width of the gap between two adjacent hollow round rods is 0.2-0.3 times of the aperture of the sieve pore.
Preferably, the number of the mounting holes is at least four, and the at least four mounting holes are arranged around the central axis of the connecting flange plate in an annular equal angle manner.
Preferably, a third annular mounting groove is further formed in one side face, back to the base pipe, of the connecting flange plate, a third sealing ring is fixedly mounted inside the third annular mounting groove, and the third sealing ring is made of high-temperature-resistant rubber.
Preferably, the annular abutting seat is integrally provided with a plurality of hemispherical bulges on one end face, back to the first annular connecting seat, of the annular abutting seat, and the hemispherical bulges are annularly arranged at equal angles around the central shaft of the annular abutting seat.
Preferably, the inner wall of the guide sleeve is attached to the outer side wall of the base pipe, and the roughness of the inner wall of the guide sleeve and the roughness of the outer side wall of the base pipe are not greater than Ra0.1.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the composite sand control screen pipe, the screening precision of the composite sand control screen pipe can be adjusted, so that the composite sand control screen pipe does not need to be prefabricated according to an oil reservoir, the screening precision can still be changed after the composite sand control screen pipe is manufactured, the application range is wide, large-scale prefabrication in advance of a processing plant is facilitated, the phenomenon that a working period needs to be overtime and overtime frequently during processing can be avoided, and then, the production personnel are prevented from being subjected to high working pressure and high working strength;
2. the composite sand control screen pipe is convenient to install and connect, and the installed connection part has good sealing performance and can meet the use requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a precision adjustable composite sand screen according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a tunable sand control mechanism according to an embodiment of the invention;
FIG. 3 is a schematic semi-sectional structural view of a precision adjustable composite sand screen according to an embodiment of the present invention;
FIG. 4 is a cross-sectional structural schematic view of a coupling mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of the exploded structure of FIG. 4;
FIG. 6 is a schematic representation of a precision adjustable composite sand screen according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a guard mechanism according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of a partial detonation configuration of an adjustable accuracy composite sand screen according to an embodiment of the present invention;
fig. 9 is an enlarged schematic view of a partial view a of fig. 8.
In the figure:
1. a base pipe;
2. the precision is adjustable and the sand is prevented; 201. a first annular connecting seat; 202. a second annular connecting seat; 203. winding; 204. a guide sleeve; 205. an annular abutment seat; 206. adjusting the nut; 207. a hemispherical protrusion;
3. a connecting mechanism; 301. fixing a sleeve; 302. a connecting cylinder; 303. an annular retainer ring; 304. locking the nut; 305. a first annular mounting groove; 306. a first seal ring; 307. a second annular mounting groove; 308. a second seal ring;
4. a protection mechanism; 401. an annular fixed seat; 402. a guide bar; 403. a hollow round bar; 404. a circular through hole;
5. screening holes;
6. a threaded portion;
7. connecting a flange plate;
8. a third annular mounting groove;
9. a third seal ring;
10. and (7) installing holes.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The invention is further described with reference to the following figures and specific examples.
Example 1
Referring to fig. 1, a composite sand control screen with adjustable accuracy according to an embodiment of the present invention includes a base pipe 1, an adjustable-accuracy sand control mechanism 2, and a coupling mechanism 3.
Wherein, as shown in fig. 1, fig. 3 and fig. 9, the both ends of parent tube 1 are open structure, just a plurality of sieve meshes 5 have evenly been seted up on the pipe wall at parent tube 1 middle part, just the one end outside of parent tube 1 is equipped with screw thread portion 6, the welding of the other end of parent tube 1 has flange plate 7, flange plate 7 is gone up and is close to its edge and still seted up a plurality of mounting holes 10.
As shown in fig. 1 to 3, the sand control mechanism 2 with adjustable accuracy includes a first annular connection seat 201, a second annular connection seat 202, a wire winding 203, a guide sleeve 204, an annular abutting seat 205 and an adjusting nut 206, the first annular connection seat 201 is slidably installed on the outside of the base tube 1, the first annular connection seat 201 is adjacent to the threaded portion 6, the second annular connection seat 202 is fixedly installed on the outside of the base tube 1, the second annular connection seat 202 is adjacent to the flange 7, the wire winding 203 is fixedly installed between the second annular connection seat 202 and the first annular connection seat 201, the wire winding 203 is spirally wound on the outside of the base tube 1, the wire winding 203 completely covers the outside of the plurality of sieve holes 5, the wire winding 203 is made of stainless steel, the guide sleeve 204 is fixedly installed on the first annular connection seat 201, and faces away from one side surface of the second annular connection seat 202 On, just uide bushing 204 is the slip suit still in the outside of parent tube 1, annular butt seat 205 fixed mounting be in uide bushing 204 dorsad the one end tip of first annular connecting seat 201, just annular butt seat 205 is the slip suit still in the outside of parent tube 1, adjusting nut 206 screw thread suit is in on screw thread portion 6, just adjusting nut 206 orientation a terminal surface of first annular connecting seat 201 with annular butt seat 205 dorsad a terminal surface of first annular connecting seat 201 is inconsistent.
Wherein, as shown in fig. 1 and fig. 3-5, the connection mechanism 3 includes a fixing sleeve 301, a connection cylinder 302, a lock nut 304, an annular retainer ring 303, a first seal ring 306 and a second seal ring 308, the fixing sleeve 301 is disposed at one end of the base pipe 1 far away from the connection flange 7, the fixing sleeve 301 is screwed on the threaded portion 6, a first annular mounting groove 305 is further disposed inside the fixing sleeve 301, the connection cylinder 302 is fixedly mounted at an end portion of the fixing sleeve 301 facing away from the adjusting nut 206, the connection cylinder 302 is communicated with the inside of the fixing sleeve 301, the lock nut 304 is rotatably sleeved outside the connection cylinder 302, a second annular mounting groove 307 is disposed inside the lock nut 304, the annular retainer ring 303 is fixedly mounted at an end portion of the connection cylinder 302 far away from the fixing sleeve 301, the annular retaining ring 303 is located inside the retaining nut 304, the annular retaining ring 303 is used for preventing the retaining nut 304 from falling off from the outside of the connecting cylinder 302, the first sealing ring 306 is fixedly installed inside the first annular installation groove 305, the second sealing ring 308 is fixedly installed inside the second annular installation groove 307, and both the second sealing ring 308 and the first sealing ring 306 are made of high-temperature-resistant rubber.
By adopting the technical scheme, the designed composite sand control screen pipe with adjustable precision is composed of a base pipe 1, a sand control mechanism 2 with adjustable precision and a connecting mechanism 3, wherein the sand control mechanism 2 with adjustable precision is composed of a first annular connecting seat 201, a second annular connecting seat 202, a wire winding 203, a guide sleeve 204, an annular abutting seat 205 and an adjusting nut 206, when in use, the distance between the first annular connecting seat 201 and the second annular connecting seat 202 can be adjusted by adjusting the position of the adjusting nut 206 on a threaded part 6, the screw pitch of the wire winding 203 spirally surrounding the outer part of the base pipe 1 can be changed when the distance between the first annular connecting seat 201 and the second annular connecting seat 202 is changed, thereby realizing the adjustment of the filtering precision of the wire winding 203, further leading the filtering precision of the composite sand control screen pipe to be adjusted, therefore, leading the composite sand control screen pipe to be unnecessary to be prefabricated according to oil reservoirs, the screening precision can still be changed after the manufacturing, the application range is wide, large-scale prefabrication in advance of a processing plant is facilitated, the phenomenon that a working period needs to be overtime and overtime frequently during processing can be avoided, and therefore greater working pressure and working strength are avoided for production personnel;
in addition, the connecting mechanism 3 is composed of a fixing sleeve 301, a connecting cylinder 302, a locking nut 304, an annular retainer ring 303, a first sealing ring 306 and a second sealing ring 308, so that the composite sand control screen pipe is convenient to mount and connect, and the first sealing ring 306 and the second sealing ring 308 are matched with each other to ensure that the connecting mechanism 3 has good sealing performance and can meet the use requirements.
Example 2
As shown in fig. 6-7, the difference between this embodiment and embodiment 1 is that the composite sand control screen tube with adjustable precision further includes a protection mechanism 4, where the protection mechanism 4 includes a plurality of circular through holes 404, a plurality of hollow round rods 403, an annular fixing seat 401 and a plurality of guide rods 402, the plurality of circular through holes 404 are all opened on the second annular connecting seat 202, and the plurality of circular through holes 404 are circumferentially arranged around the central axis of the second annular connecting seat 202 at equal angles, the plurality of hollow round rods 403 are respectively movably installed inside the plurality of circular through holes 404, the plurality of hollow round rods 403 are all arranged parallel to the base tube 1, one end of each of the plurality of hollow round rods 403 is fixedly connected to a side of the first annular connecting seat 201 facing the second annular connecting seat 202, the annular fixing seat 401 is fixedly installed outside the base tube 1, the annular fixing seat 401 is located between the second annular connecting seat 202 and the connecting flange 7, the plurality of guide rods 402 are fixedly mounted on one side face, facing the second annular connecting seat 202, of the annular fixing seat 401, the plurality of guide rods 402 are arranged around the central axis of the annular fixing seat 401 in an annular equal angle mode, one ends, far away from the annular fixing seat 401, of the guide rods 402 movably extend into the other ends of the plurality of hollow round rods 403, and the number of the circular through holes 404, the number of the hollow round rods 403 and the number of the guide rods 402 are the same.
By adopting the technical scheme, the arranged protection mechanism 4 consists of a plurality of circular through holes 404, a plurality of hollow circular rods 403, an annular fixed seat 401 and a plurality of guide rods 402, under the mutual cooperation of the circular through holes 404, the hollow circular rods 403, the annular fixed seat 401 and the guide rods 402, the whole length of the protection mechanism 4 can be adjusted, can be used in combination with the precision adjustable sand prevention mechanism 2 for protecting the precision adjustable sand prevention mechanism 2 to meet the use requirement, a plurality of hollow round rods 403 can block sharp sand outside, meanwhile, the wire winding 203 can be prevented from directly rubbing with the sand when the composite sand control screen pipe is moved, the wire winding 203 can be prevented from being damaged, thereby make protection machanism 4 can effectively protect adjustable sand control mechanism 2 of precision, and then guarantee the life of adjustable sand control mechanism 2 of precision.
Example 3
As shown in fig. 3, 7 and 9, the present embodiment is different from embodiment 2 in that the first annular connecting seat 201, the second annular connecting seat 202, the annular fixing seat 401, the hollow round rods 403 and the guide rods 402 are all made of stainless steel, a gap width between two adjacent hollow round rods 403 is 0.2-0.3 times of the aperture of the sieve holes 5, at least four mounting holes 10 are provided, and at least four mounting holes 10 are arranged in an annular shape at equal angles around the central axis of the connecting flange 7.
Through adopting above-mentioned technical scheme, with first annular connecting seat 201, second annular connecting seat 202, annular fixing base 401, cavity pole 403 and guide bar 402 all adopt the stainless steel to make, make the adjustable sand control mechanism of precision 2 and protection machanism 4's load strength better, difficult emergence damages the deformation, can guarantee this compound sand control screen pipe's life, in addition, set up the gap width between two adjacent cavity poles 403 to 0.2-0.3 times in 5 apertures of sieve mesh, can guarantee that sieve mesh 5 can not be blockked up, in addition, mounting hole 10 is provided with four at least, make the firm in connection intensity of connecting flange dish 7 better, be difficult for droing.
Example 4
As shown in fig. 8 to 9, the present embodiment is different from embodiment 3 in that a third annular installation groove 8 is further formed in a side surface of the connection flange 7 facing away from the base pipe 1, a third seal ring 9 is further fixedly installed inside the third annular installation groove 8, and the third seal ring 9 is made of high temperature resistant rubber.
Through adopting above-mentioned technical scheme, the third sealing washer 9 that sets up can effectively strengthen the sealing performance of flange plate 7 after the connection, can avoid flange plate 7 to leak sand after the connection.
Example 5
As shown in fig. 2 to fig. 3, the difference between this embodiment and embodiment 4 is that the annular abutting seat 205 is further integrally provided with a plurality of hemispherical protrusions 207 on an end surface facing away from the first annular abutting seat 201, the plurality of hemispherical protrusions 207 are circumferentially arranged around a central axis of the annular abutting seat 205 at equal angles, an inner wall of the guide sleeve 204 is attached to an outer sidewall of the base tube 1, and roughness of the inner wall of the guide sleeve 204 and roughness of the outer sidewall of the base tube 1 are not greater than ra0.1.
By adopting the technical scheme, the hemispherical bulge 207 can be abutted against the adjusting nut 206, the friction between the adjusting nut 206 and the annular abutting seat 205 can be reduced, the annular abutting seat 205 is driven to rotate when the adjusting nut 206 is rotated to apply a rotating force to the winding wire 203 to influence the performance of the winding wire 203, in addition, the inner wall of the guide sleeve 204 is attached to the outer side wall of the base tube 1, the roughness of the inner wall of the guide sleeve 204 and the roughness of the outer side wall of the base tube 1 are both set to be not more than Ra0.1, so that the gap between the inner wall of the guide sleeve 204 and the outer side wall of the base pipe 1 is smaller, the sand entering can be avoided to accelerate the abrasion of the guide sleeve 204 and the base pipe 1, thereby ensuring the service life of the composite sand control screen pipe, and in addition, the guide sleeve 204 plays a role of guiding the first annular connecting seat 201, the first annular seating socket 201 can be guaranteed to move stably along the base pipe 1, so that the composite sand control screen is relatively stable in adjusting accuracy.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the connecting mechanism 3 consisting of the fixing sleeve 301, the connecting cylinder 302, the locking nut 304, the annular retainer ring 303, the first sealing ring 306 and the second sealing ring 308 is matched with the connecting flange 7 to connect the composite sand control screen pipe with a deep well pump, a submersible pump, water treatment equipment and petroleum product terminal filtering equipment in a matching way for use, when the screening precision of the composite sand control screen pipe needs to be adjusted, the distance between the first annular connecting seat 201 and the second annular connecting seat 202 can be adjusted by adjusting the position of the adjusting nut 206 on the threaded part 6 through a wrench, so that the screening precision of the composite sand control screen pipe can be adjusted.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (10)
1. The utility model provides a compound sand control screen pipe of precision adjustable which characterized in that includes: parent tube (1), the both ends of parent tube (1) are open structure, just a plurality of sieve meshes (5) have evenly been seted up on the pipe wall at parent tube (1) middle part, just the one end outside of parent tube (1) is equipped with screw thread portion (6), the other end welding of parent tube (1) has flange plate (7), flange plate (7) are gone up and are closed on its edge and still seted up a plurality of mounting holes (10).
2. The composite sand control screen of claim 1, further comprising an adjustable-precision sand control mechanism (2), wherein the adjustable-precision sand control mechanism (2) comprises a first annular connecting seat (201), a second annular connecting seat (202), a wire winding (203), a guide sleeve (204), an annular abutting seat (205), and an adjusting nut (206), the first annular connecting seat (201) is slidably sleeved outside the base pipe (1), the first annular connecting seat (201) is arranged adjacent to the threaded portion (6), the second annular connecting seat (202) is fixedly sleeved outside the base pipe (1), the second annular connecting seat (202) is arranged adjacent to the connecting flange (7), and the wire winding (203) is fixedly installed between the second annular connecting seat (202) and the first annular connecting seat (201), just wire winding (203) are the heliciform and encircle the outside of parent tube (1), wire winding (203) covers a plurality of completely the outside of sieve mesh (5), just wire winding (203) is made by stainless steel, uide bushing (204) fixed mounting be in first annular connecting seat (201) dorsad on a side of second annular connecting seat (202), just uide bushing (204) still slip the suit in the outside of parent tube (1), annular butt joint seat (205) fixed mounting be in uide bushing (204) dorsad the one end tip of first annular connecting seat (201), just annular butt joint seat (205) still slip the suit in the outside of parent tube (1), adjusting nut (206) thread bush is in on screw thread portion (6), just adjusting nut (206) orientation a terminal surface of first annular connecting seat (201) with annular butt joint seat (205) dorsad a terminal surface of first annular connecting seat (201) Making mutual contact; still include coupling mechanism (3), coupling mechanism (3) are including fixed cover (301), connecting cylinder (302), lock nut (304), annular retaining ring (303), first sealing washer (306) and second sealing washer (308), fixed cover (301) set up parent tube (1) is kept away from the one end of connecting flange dish (7), just fixed cover (301) spiro union is in on screw thread portion (6), first annular mounting groove (305) have still been seted up to the inside of fixed cover (301), connecting cylinder (302) fixed mounting in fixed cover (301) dorsad the one end tip of adjusting nut (206), just connecting cylinder (302) with the inside of fixed cover (301) is linked together, lock nut (304) rotate the suit in the outside of connecting cylinder (302), just second annular mounting groove (307) have been seted up to the inside of lock nut (304), the annular retainer ring (303) is fixedly installed at one end part of the connecting cylinder (302) far away from the fixed sleeve (301), the annular retainer ring (303) is positioned inside the locking nut (304), the annular retainer ring (303) is used for preventing the locking nut (304) from falling off from the outside of the connecting cylinder (302), the first sealing ring (306) is fixedly installed inside the first annular installation groove (305), the second sealing ring (308) is fixedly installed inside the second annular installation groove (307), and the second sealing ring (308) and the first sealing ring (306) are both made of high-temperature-resistant rubber; still include protection machanism (4), protection machanism (4) include a plurality of circular through-hole (404) and a plurality of cavity pole (403), and are a plurality of circular through-hole (404) are all seted up on second annular connecting seat (202), and are a plurality of circular through-hole (404) center on the center pin of second annular connecting seat (202) is the ring and so on the angle arrange, a plurality of cavity pole (403) movable mounting respectively is a plurality of the inside of circular through-hole (404), a plurality of cavity pole (403) all are on a parallel with base pipe (1) sets up, and is a plurality of the one end of cavity pole (403) all with first annular connecting seat (201) orientation a side fixed connection of second annular connecting seat (202).
3. The composite sand control screen of claim 2, wherein the first and second screens are substantially parallel, the protection mechanism (4) also comprises an annular fixed seat (401) and a plurality of guide rods (402), the annular fixed seat (401) is fixedly sleeved outside the base pipe (1), the annular fixing seat (401) is positioned between the second annular connecting seat (202) and the connecting flange plate (7), the guide rods (402) are fixedly arranged on one side surface of the annular fixing seat (401) facing the second annular connecting seat (202), and a plurality of guide rods (402) are annularly and equiangularly arranged around the central axis of the annular fixed seat (401), and one ends of the guide rods (402) far away from the annular fixed seat (401) are movably extended into the other ends of the hollow round rods (403).
4. An adjustable accuracy composite sand screen according to claim 3, wherein the number of circular through holes (404), the number of hollow round rods (403) and the number of guide rods (402) are the same.
5. An adjustable accuracy composite sand control screen according to claim 3, wherein the first annular coupling seats (201), the second annular coupling seats (202), the annular retaining seats (401), the hollow round rods (403) and the guide rods (402) are made of stainless steel.
6. The sand control screen as claimed in claim 2, wherein the gap width between two adjacent hollow round rods (403) is 0.2-0.3 times the diameter of the screen holes (5).
7. An adjustable accuracy composite sand control screen according to claim 2, characterized in that at least four of the mounting holes (10) are provided, and at least four of the mounting holes (10) are arranged circumferentially at equal angles around the central axis of the connecting flange (7).
8. The composite sand control screen pipe with adjustable precision according to claim 7, characterized in that a third annular mounting groove (8) is further formed on one side surface of the connecting flange (7) facing away from the base pipe (1), a third sealing ring (9) is further fixedly mounted inside the third annular mounting groove (8), and the third sealing ring (9) is made of high temperature resistant rubber.
9. The sand control screen of claim 8, wherein the annular docking seat (205) has a plurality of hemispherical protrusions (207) integrally formed on an end surface facing away from the first annular docking seat (201), and the hemispherical protrusions (207) are arranged in a circular manner at equal angles around the central axis of the annular docking seat (205).
10. The composite sand control screen of claim 2, wherein the inner wall of the guide sleeve (204) is attached to the outer sidewall of the base pipe (1), and the roughness of the inner wall of the guide sleeve (204) and the roughness of the outer sidewall of the base pipe (1) are not greater than Ra0.1.
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| CN202011213512.8A CN112343563B (en) | 2020-11-04 | 2020-11-04 | Precision-adjustable composite sand control screen pipe |
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| CN202011213512.8A CN112343563B (en) | 2020-11-04 | 2020-11-04 | Precision-adjustable composite sand control screen pipe |
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| CN112343563B CN112343563B (en) | 2022-03-15 |
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| CN112343563B (en) | 2022-03-15 |
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Denomination of invention: A precision adjustable composite sand control screen tube Effective date of registration: 20231106 Granted publication date: 20220315 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: Shandong Huaguan Energy Technology Co.,Ltd. Registration number: Y2023980064188 |