CN109505527B - Joint for abrasion prevention of drill rod and water isolation pipe and use method - Google Patents
Joint for abrasion prevention of drill rod and water isolation pipe and use method Download PDFInfo
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- CN109505527B CN109505527B CN201910023307.6A CN201910023307A CN109505527B CN 109505527 B CN109505527 B CN 109505527B CN 201910023307 A CN201910023307 A CN 201910023307A CN 109505527 B CN109505527 B CN 109505527B
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- abrasion
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- assembly
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- 238000005299 abrasion Methods 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002265 prevention Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 10
- 238000002955 isolation Methods 0.000 title abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
Images
Classifications
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a joint for abrasion prevention of a drill rod and a marine riser and a use method thereof. The connector comprises a connector inner assembly, a connector outer assembly, an anti-abrasion block mounting groove bolt, a female thread, a male thread, a bolt hole, a metal bolt anti-abrasion barrel, a limiting ring, a limiting groove gear ring, a motor, a starting gear, a microcomputer, a data line hole, a magnetic connector, a pressure sensor and a storage battery. The joint external component and the joint internal component can relatively rotate under normal working conditions, and when the friction force between the drill rod and the water isolation pipe is overlarge during drilling operation, and the joint external component cannot relatively move relative to the water isolation pipe, the joint external component can be driven to rotate by a closed-loop control system consisting of an internal pressure sensor, a microcomputer and an electric motor. The anti-module is replaceable. The invention has the advantages that: the module replacement prevention is simple and convenient to install, and the cost is saved; by using the ring control system, the abrasion of the water isolation pipe and the drill rod is effectively reduced, and the service life of the anti-abrasion joint is prolonged.
Description
Technical Field
The invention relates to the technical field of oilfield equipment, in particular to a joint for abrasion prevention of a drill rod and a marine riser and a use method thereof.
Background
The biggest difference between deep water drilling and land drilling is the existence of a special device, namely a riser, between the drilling platform and the sea floor. The main function of the marine riser is to isolate the seawater, form a circulating channel of drilling fluid, establish a channel for a drilling tool to enter the stratum, and connect additional pipelines in series. In seawater, the marine riser is subjected to marine environmental load, and is prone to bending deformation and vortex-induced vibration. When the waterproof pipe is subjected to bending deformation and vortex-induced vibration, the inner wall of the waterproof pipe is in contact abrasion with the drill pipe joint and the outer wall. The wall thickness of the water isolation pipe is thinned due to long-time contact abrasion, so that the strength of the water isolation pipe is greatly reduced, and the water isolation pipe is broken and damaged. Therefore, the joint for the abrasion prevention of the drill rod and the water isolation pipe and the using method thereof have great practical significance. In the existing drill rod and marine riser wear-resistant patent, some utilize the ball, some utilize the gyro wheel, basically all be steel construction, steel construction ball gyro wheel is wear-resistant, but simultaneously the gap of part lets the ball unable normal rotation because of silt or other impurity easily, and the abrasionproof effect descends, still probably damage the marine riser. The split anti-abrasion street joint of the invention can generate larger friction with the water-proof pipe wall at the water-proof pipe dog leg during the working process, so that the relative rotation between the anti-abrasion street joint and the water-proof pipe is stopped. The invention can effectively reduce friction between the marine riser and the connector under the special working condition by utilizing the closed-loop control system, and prolong the service life of the connector. The wear-resistant block is made of polyurethane elastomer materials with wear resistance far superior to other materials, has stronger protection capability on the drill rod and the water-proof pipe, does not damage the water-proof pipe, and has low cost and simple assembly.
Disclosure of Invention
The utility model provides a joint and application method that is used for drilling rod and marine riser abrasionproof which characterized in that: the anti-abrasion device comprises a joint inner assembly, a joint outer assembly, an anti-abrasion block mounting groove, a bolt, a female thread, a male thread, a bolt hole, a metal bolt anti-abrasion cylinder, a limiting ring, a limiting groove, a gear ring, a motor, a starting gear, a microcomputer, a data line hole, a magnetic joint, a pressure sensor and a storage battery; the joint inner assembly is respectively connected with two drill rods through threads on two sides, limiting rings at two ends of the joint inner assembly are matched with limiting grooves on the joint outer assembly, each contact surface of the limiting rings and the limiting grooves is sealed by a filler, multiple layers of carbon fibers and rubber are filled in the filler, and the joint outer assembly is axially fixed and can rotate around the joint inner assembly; a microcomputer and a motor are arranged on one side of the joint outer assembly matched with the joint inner assembly, the motor is connected with a starting gear through a key, the starting gear is tightly connected with the joint inner assembly and is meshed with a tightly welded gear ring, oil bath lubrication is adopted at the matched position, and lubricating oil submerges the upper part of the gear ring; the outer side of the joint outer assembly is provided with wear-resistant block mounting grooves which are uniformly distributed; two axial side surfaces of the anti-wear block mounting groove are respectively provided with two bolts with springs, and the positions of the bottom plane data line holes are provided with magnetic joints; the wear-resistant block is provided with a bolt hole, and a metal bolt wear-resistant cylinder is arranged in the bolt hole by interference fit and special glue; in the manufacturing and forming stage of the anti-wear block, the pressure sensor is arranged at a certain depth of the streamline profile end, the magnetic joint is arranged on the plane end, and the magnetic joint is connected with the pressure sensor through a data line; the positions of the magnetic joints on the anti-wear block and the positions of the magnetic joints on the anti-wear block mounting groove are matched with each other, so that the anti-wear block can be attracted and communicated in normal operation, collected data can be transmitted to a microcomputer in real time, a storage battery supplies power for the microcomputer and the pressure sensor, and the storage battery can be charged through the magnetic joints on the anti-wear block mounting groove; the metal bolt on the anti-abrasion block is inserted into the anti-abrasion cylinder, so that the anti-abrasion block is fixed on the joint external assembly, and a gap between the anti-abrasion block and the joint external assembly is bonded and reinforced by a special adhesive.
Furthermore, the anti-wear block is made of polyurethane elastomer material, and a pressure sensor is arranged in the anti-wear block in the manufacturing and forming stage.
Furthermore, the exposed part of the anti-abrasion block is streamline, and the lower part of the anti-abrasion block is large and small, so that the impact effect and vortex-induced vibration of drilling fluid are reduced.
Further, the anti-abrasion block is provided with a bolt hole, and the bolt is inserted into the bolt hole to fix the anti-abrasion block on the anti-module mounting groove.
Furthermore, the tail part of the bolt is welded with a spring, and the bolt is pushed and released during installation, and the anti-wear block is distributed with the joint for a circle, and the upper layer and the lower layer.
Further, the anti-abrasion block is provided with a metal bolt anti-abrasion cylinder corresponding to the bolt hole, so that the bolt can be prevented from cutting off the anti-abrasion block when the acting force is overlarge.
Further, the data line between the pressure sensor and the microcomputer is connected with the anti-abrasion block and the anti-abrasion block groove by a magnetic joint.
Furthermore, the microcomputer, the motor and the pressure sensor are arranged in the connector outer assembly to form an intelligent closed-loop control system, and the motor can be started in time to prevent the device from being damaged when the connector outer assembly and the marine riser are in relative rotation due to overlarge friction between the connector outer assembly and the inner wall of the marine riser.
Further, the motor transmits torque generated by the motor to the joint inner assembly through the actuating gear and the gear collar.
The joint application method for the abrasion prevention of the drill rod and the marine riser comprises the following steps of installation and application:
s1, installing the metal bolt anti-wear cylinder into a bolt hole on the anti-wear block.
S2, inserting the pin spring end into the pin hole on the anti-abrasion block mounting groove, compressing the spring by using the sheet-shaped tool, putting the anti-abrasion block into the pin hole, removing the sheet-shaped compression tool, and automatically bouncing the pin into the pin hole on the anti-abrasion block mounting groove.
S3, injecting special adhesive into a gap between the anti-abrasion block and the anti-abrasion block mounting groove, sealing the gap, and reinforcing connection between the anti-abrasion block and the joint external assembly.
S4, the external thread at one end of one drill rod is meshed with the female thread of the connector inner assembly, and the internal thread at the other end of the other drill rod is meshed with the male thread of the connector inner assembly so as to connect the two drill rods and install at the dogleg of the marine riser.
S5, in working engineering, the inner wall of the marine riser and the outer assembly of the connector generate huge friction force, so that the relative rotation between the outer assembly of the connector and the marine riser is stopped, and the wear-resisting block at the contact part bears huge stress. At this time, the pressure sensor in the anti-wear block receives a larger pressure signal, converts the pressure signal into an electric signal, and transmits the electric signal to the microcomputer through the data line to send an instruction to control the motor to rotate in the opposite direction of the rotation direction of the drill rod. The microcomputer timely adjusts the torque output by the motor according to the data fed back by the pressure sensor. The relative rotation of the joint outer assembly and the riser reappears, reducing wear of several wear blocks.
And S6, after the abrasion-proof block is abraded, taking out along with the drill rod, removing the abraded abrasion-proof block, and continuously using after replacing a new abrasion-proof block.
The invention has the following advantages:
1. polyurethane elastomer materials with excellent wear resistance are used as wear-resistant materials, so that the drill rod and the water-proof pipe are more protected, and the water-proof pipe cannot be damaged.
2. The anti-abrasion block is provided with a metal bolt anti-abrasion cylinder corresponding to the bolt hole, so that the bolt can be prevented from cutting off the anti-abrasion block when the acting force is overlarge.
3. The exposed part of the anti-abrasion block is streamline, and the lower part is big and small, so that the impact action and vortex-induced vibration of drilling fluid are reduced.
4. When the connector and the marine riser cannot rotate relatively, the connector and the marine riser can rotate relatively by means of the closed-loop control system, friction between the marine riser and the connector is reduced, and the service life of the connector is prolonged.
5. The anti-module is replaceable.
Drawings
FIG. 1-side view of a wear block;
FIG. 2-details of the bolt installation;
FIG. 3-a cross-sectional view of a joint;
FIG. 4-front view of a joint;
FIG. 5-front view of the joint;
in the figure: 1. a joint inner assembly; 2. a joint outer assembly; 3. an anti-abrasion block; 4. an anti-abrasion block mounting groove; 5. a plug pin; 6. female threads; 7. a male thread; 8. an anti-abrasion block pin hole; 9. a metal bolt anti-abrasion cylinder; 10. a limiting ring; 11. a limit groove; 12. a gear ring; 13. a motor; 14. starting a gear; 15. a microcomputer; 16. a data line; 17. a data line hole; 18. a magnetic joint; 19. a pressure root transmitter; 20. a storage battery; 21. the mounting groove is inserted into the pin hole.
Detailed description of the preferred embodiments
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
as shown in fig. 1 to 5, the application method of the joint for abrasion prevention of a drill rod and a marine riser comprises the steps of a joint inner assembly 1, a joint outer assembly 2, an abrasion prevention block 3, an abrasion prevention block mounting groove 4, a bolt 5, a female thread 6, a male thread 7, an abrasion prevention block bolt hole 8, a metal bolt abrasion prevention cylinder 9, a limiting ring 10, a limiting groove 11, a gear ring 12, a motor 13, a starting gear 14, a microcomputer 15, a data line 16, a data line hole 17, a magnetic joint 18, a pressure sensor 19, a storage battery 20 and a mounting groove bolt hole 21; the joint inner assembly 1 is respectively connected with two drill rods through threads on two sides, limiting rings 10 on two ends of the joint inner assembly are matched with limiting grooves 11 on the joint outer assembly 2, each contact surface of the limiting rings 10 and the limiting grooves 11 is sealed by a filler, multiple layers of carbon fibers and rubber are filled in, the joint outer assembly 2 is axially fixed, and the joint outer assembly 2 can rotate around the joint inner assembly 1; a microcomputer 15 and a motor 13 are arranged on one side of the joint outer assembly 2 matched with the joint inner assembly 1, the motor 13 is connected with a starting gear 14 through keys, the starting gear 14 is meshed with a gear ring 12 tightly connected with the joint inner assembly 1 and tightly welded, the matched part is lubricated by adopting oil bath, and the lubricating oil is immersed in the upper part of the gear ring 12; the outer side of the joint outer assembly 2 is provided with wear-resistant block mounting grooves 4 which are uniformly distributed; two axial side surfaces of the anti-abrasion block mounting groove 4 are respectively provided with two mounting groove bolt holes 21, bolts 5 with springs are arranged in the holes, and magnetic joints 18 are arranged at the positions of bottom plane data line holes 17; the anti-abrasion block is provided with an anti-abrasion block bolt hole 8, and a metal bolt anti-abrasion cylinder 9 is arranged in the anti-abrasion block bolt hole 8 by interference fit and special glue; in the manufacturing and forming stage of the anti-wear block 3, a pressure sensor 19 is arranged at a certain depth of the streamline profile end, a magnetic joint 18 is arranged on the plane end, and the magnetic joint 18 and the pressure sensor 19 are connected through a data line 16; the positions of the magnetic joints 18 on the anti-abrasion block 3 and the positions of the magnetic joints 18 on the anti-abrasion block mounting groove 4 are matched with each other, so that the anti-abrasion block mounting groove can attract and communicate in normal operation, collected data can be transmitted to the microcomputer 15 in real time, the storage battery 20 supplies power for the microcomputer 15 and the pressure sensor 19, and the storage battery 20 can be charged through the magnetic joints 18 of the anti-abrasion block mounting groove 4; the anti-wear block 3 is fixed on the joint outer assembly 2 through the bolt 5, and the gap between the anti-wear block 3 and the joint outer assembly 2 is bonded and reinforced by special adhesive.
The wear block 3 is made of polyurethane elastomer material, and a pressure sensor 19 is installed in the wear block 3 in the manufacturing and molding stage.
The exposed part of the anti-abrasion block 3 is streamline, and the lower part is large and small, so that the impact action and vortex-induced vibration of drilling fluid are reduced.
The bolt 5 fixes the wear block 3 to the wear block mounting slot 4.
The tail part of the bolt 5 is welded with a spring, and the bolt is pushed and released during installation, and the wear-resistant block is distributed on the upper layer and the lower layer of the joint for a circle.
The anti-abrasion block 3 is provided with a metal bolt anti-abrasion cylinder 9 corresponding to the anti-abrasion block bolt hole 8, so that the anti-abrasion block is prevented from being cut off by the bolt when the acting force is overlarge.
The data line 16 between the pressure sensor 19 and the microcomputer 15 is connected at the wear block 3 and the wear block mounting slot 4 by means of a magnetic joint 18.
The microcomputer 15, the motor 13 and the pressure sensor 19 are arranged in the joint outer assembly 2 to form an intelligent closed-loop control system, and when the friction between the joint outer assembly 2 and the inner wall of the marine riser is too large, the motor 13 can be started in time to prevent the device from being damaged when the joint outer assembly 2 and the marine riser do not rotate relatively.
The motor 13 transmits the torque generated by the motor to the joint inner assembly 1 through the start gear 14 and the gear ring 12.
As shown in fig. 1 to 5, the bolt 5 is inserted into the metal bolt anti-abrasion barrel 9 on the anti-abrasion block 3, so that the anti-abrasion block 3 is fixed on the joint body, and the gap between the anti-abrasion block 3 and the joint body is bonded and reinforced by a special adhesive. The tail of the bolt 5 is provided with a spring, and the installation is convenient. The external thread at one end of one drill rod is meshed with the female thread 6 of the joint body, and the internal thread at the other end of the other drill rod is meshed with the male thread 7 of the joint body so as to connect the two drill rods.
As shown in fig. 1, the anti-abrasion block 3 is inlaid into the joint body to form a cuboid, the installation is stable, the exposed part is streamline, the lower part is large and small, and the impact action and vortex-induced vibration of drilling fluid are reduced.
As shown in fig. 2, the anti-wear block 3 is provided with a metal bolt anti-wear cylinder 9 corresponding to the anti-wear block bolt hole 8, and the metal bolt anti-wear cylinder 9 is inserted into the anti-wear block bolt hole 8 on the anti-wear block 3 to prevent the bolt 5 from cutting off the anti-wear block 3 when the acting force is excessive.
As shown in fig. 4, the anti-wear blocks 3 are distributed over the joint for one week, and the upper layer and the lower layer, and each anti-wear block 3 is arranged at intervals of 20 degrees, and 18 layers are arranged on each upper layer and each lower layer.
The application method of the joint for the abrasion prevention of the drill rod and the marine riser comprises the following steps:
s1, mounting a metal bolt anti-wear cylinder 9 into an anti-wear block bolt hole 8 on an anti-wear block 3;
s2, inserting the spring end of the bolt 5 into a bolt hole 21 of a mounting groove on the anti-abrasion block mounting groove 4, compressing the spring by using a sheet-shaped tool, putting the spring into the anti-abrasion block 3, removing the sheet-shaped compression tool, and automatically bouncing the bolt 5 into the bolt hole 21 of the mounting groove on the anti-abrasion block mounting groove 4;
s3, injecting a special adhesive into a gap between the anti-abrasion block 3 and the anti-abrasion block mounting groove 4, sealing the gap, and reinforcing the connection between the anti-abrasion block 3 and the joint external assembly 2;
s4, engaging the external thread at one end of one drill rod with the female thread 6 of the joint inner assembly 1, and engaging the internal thread at the other end of the other drill rod with the male thread 7 of the joint inner assembly 1 so as to connect the two drill rods and install at the dogleg of the marine riser;
s5, in working engineering, the inner wall of the marine riser and the joint outer assembly 2 generate huge friction force, so that the relative rotation between the joint outer assembly 2 and the marine riser is stopped, and the anti-abrasion block 3 at the contact part bears huge stress; the pressure sensor 19 in the anti-wear block 3 receives a larger pressure signal, converts the larger pressure signal into an electric signal, and transmits the electric signal to the microcomputer 15 through the data line 16; the microcomputer 15 sends out instructions to control the motor 13 to rotate in the opposite direction of the rotation direction of the drill rod; the microcomputer 15 timely adjusts the torque output by the motor 13 according to the data fed back by the pressure sensor 19; the relative rotation of the joint outer assembly 2 and the marine riser is reappeared, so that the abrasion of a plurality of abrasion-proof blocks 3 is reduced;
and S6, after the abrasion-proof block 3 is abraded, taking out along with the drill rod, removing the abraded abrasion-proof block 3, and continuously using after replacing a new abrasion-proof block 3.
Claims (9)
1. The application method of the joint for the abrasion prevention of the drill rod and the marine riser is characterized in that the joint comprises a joint inner assembly (1), a joint outer assembly (2), an abrasion prevention block (3), an abrasion prevention block mounting groove (4), a bolt (5), female threads (6), male threads (7), an abrasion prevention block bolt hole (8), a metal bolt abrasion prevention cylinder (9), a limiting ring (10), a limiting groove (11), a gear ring (12), a motor (13), a starting gear (14), a microcomputer (15), a data line (16), a data line hole (17), a magnetic joint (18), a pressure sensor (19), a storage battery (20) and a mounting groove bolt hole (21); the joint inner assembly (1) is respectively connected with two drill rods through threads on two sides, limiting rings (10) at two ends of the joint inner assembly are matched with limiting grooves (11) on the joint outer assembly (2), filler sealing is applied to each contact surface of the limiting rings (10) and the limiting grooves (11), multiple layers of carbon fibers and rubber are filled in, the joint outer assembly (2) is axially fixed, and the joint outer assembly (2) can rotate around the joint inner assembly (1); a microcomputer (15) and a motor (13) are arranged on one side of the joint outer assembly (2) matched with the joint inner assembly (1), the motor (13) is connected with a starting gear (14) through a key, the starting gear (14) is tightly connected with the joint inner assembly (1) and is tightly welded with a gear ring (12) to be meshed with each other, oil bath lubrication is adopted at the matched position of the gear ring, and lubricating oil submerges the upper part of the gear ring (12); the outer side of the joint outer assembly (2) is provided with wear-resistant block mounting grooves (4) which are uniformly distributed; two axial side surfaces of the anti-abrasion block mounting groove (4) are respectively provided with two mounting groove bolt holes (21), bolts (5) with springs are arranged in the holes, and magnetic joints (18) are arranged at the positions of bottom plane data line holes (17); an anti-abrasion block bolt hole (8) is arranged on the anti-abrasion block (3), and a metal bolt anti-abrasion cylinder (9) is arranged in the anti-abrasion block bolt hole (8) by interference fit and special glue; in the manufacturing and forming stage of the anti-wear block (3), a pressure sensor (19) is arranged at a certain depth of the streamline surface end of the anti-wear block, a magnetic joint (18) is arranged on the plane end of the anti-wear block, and the magnetic joint (18) is connected with the pressure sensor (19) through a data line (16); the positions of the magnetic joints (18) on the anti-abrasion blocks (3) are matched with the positions of the magnetic joints (18) on the anti-abrasion block mounting grooves (4), so that collected data can be attracted and communicated in normal operation and transmitted to the microcomputer (15) in real time, the storage battery (20) supplies power for the microcomputer (15) and the pressure sensor (19), and the storage battery (20) can be charged through the magnetic joints (18) of the anti-abrasion block mounting grooves (4); the anti-abrasion block (3) is fixed on the joint outer assembly (2) through the bolt (5), and a gap between the anti-abrasion block (3) and the joint outer assembly (2) is bonded and reinforced by a special adhesive;
it comprises the following steps:
s1, mounting a metal bolt anti-wear cylinder (9) into an anti-wear block bolt hole (8) on an anti-wear block (3);
s2, inserting the spring end of a bolt (5) into a bolt hole (21) of a mounting groove on the anti-abrasion block mounting groove (4), compressing the spring by using a sheet-shaped tool, putting the spring into the anti-abrasion block (3), removing the sheet-shaped compression tool, and automatically flicking the bolt (5) into the bolt hole (21) of the mounting groove on the anti-abrasion block mounting groove (4);
s3, injecting special adhesive into a gap between the anti-abrasion block (3) and the anti-abrasion block mounting groove (4), sealing the gap, and reinforcing the connection between the anti-abrasion block (3) and the joint external assembly (2);
s4, engaging the external thread at one end of one drill rod with the female thread (6) of the joint inner assembly (1), and engaging the internal thread at the other end of the other drill rod with the male thread (7) of the joint inner assembly (1) so as to connect the two drill rods and install the two drill rods at the dogleg of the marine riser;
s5, in working engineering, the inner wall of the marine riser and the joint outer assembly (2) generate huge friction force, so that the relative rotation between the joint outer assembly (2) and the marine riser is stopped, and the anti-abrasion block (3) at the contact part bears huge stress; at the moment, a pressure sensor (19) in the anti-wear block (3) receives a larger pressure signal, converts the larger pressure signal into an electric signal, and transmits the electric signal to a microcomputer (15) through a data line (16); the microcomputer (15) sends out a command to control the motor (13) to rotate in the opposite direction of the rotation direction of the drill rod; the microcomputer (15) timely adjusts the torque output by the motor (13) according to the data fed back by the pressure sensor (19); the relative rotation of the joint external assembly (2) and the marine riser is reappeared, so that the abrasion of a plurality of anti-abrasion blocks (3) is reduced;
s6, after the abrasion-proof block (3) is abraded, the abrasion-proof block (3) is removed along with the drill rod, and the abrasion-proof block (3) can be continuously used after being replaced by a new abrasion-proof block (3).
2. The method of claim 1, wherein the method comprises: the anti-abrasion block (3) is made of polyurethane elastomer material, and a pressure sensor (19) is arranged in the anti-abrasion block (3) in the manufacturing and molding stage.
3. The method of claim 1, wherein the method comprises: the exposed part of the anti-abrasion block (3) is streamline, and the lower part is large and small, so that the impact action and vortex-induced vibration of drilling fluid are reduced.
4. The method of claim 1, wherein the method comprises: the anti-abrasion block (3) is fixed on the anti-abrasion block mounting groove (4) through the bolt (5).
5. The method of claim 1, wherein the method comprises: the tail part of the bolt (5) is welded with a spring, the bolt is pushed and released during installation, and the wear-resistant block is distributed with a joint for a circle and an upper layer and a lower layer.
6. The method of claim 1, wherein the method comprises: the anti-abrasion block (3) is provided with a metal bolt anti-abrasion cylinder (9) corresponding to the anti-abrasion block bolt hole (8), so that the anti-abrasion block is prevented from being cut off by the bolt when the acting force is overlarge.
7. The method of claim 1, wherein the method comprises: the data line (16) between the pressure sensor (19) and the microcomputer (15) is connected with the anti-abrasion block (3) and the anti-abrasion block mounting groove (4) through a magnetic joint (18).
8. The method of claim 1, wherein the method comprises: the intelligent closed-loop control system is formed by the microcomputer (15), the motor (13) and the pressure sensor (19) in the joint outer assembly (2), and the motor (13) can be started in time to prevent the device from being damaged when the joint outer assembly (2) and the inner wall of the waterproof pipe are excessively rubbed to cause no relative rotation between the joint outer assembly (2) and the waterproof pipe.
9. The method of claim 1, wherein the method comprises: the motor (13) transmits the torque generated by the motor to the joint inner assembly (1) through the starting gear (14) and the gear ring (12).
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| CN201910023307.6A CN109505527B (en) | 2019-01-10 | 2019-01-10 | Joint for abrasion prevention of drill rod and water isolation pipe and use method |
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| CN201910023307.6A CN109505527B (en) | 2019-01-10 | 2019-01-10 | Joint for abrasion prevention of drill rod and water isolation pipe and use method |
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| CN109505527A CN109505527A (en) | 2019-03-22 |
| CN109505527B true CN109505527B (en) | 2023-07-14 |
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| CN111537043A (en) * | 2020-06-15 | 2020-08-14 | 张大鸿 | Following type magnetostrictive water level gauge for hydraulic engineering pressure measuring pipe |
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| CN109505527A (en) | 2019-03-22 |
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