CN115306319A - Nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe - Google Patents
Nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe Download PDFInfo
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- CN115306319A CN115306319A CN202210736001.7A CN202210736001A CN115306319A CN 115306319 A CN115306319 A CN 115306319A CN 202210736001 A CN202210736001 A CN 202210736001A CN 115306319 A CN115306319 A CN 115306319A
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- 239000002103 nanocoating Substances 0.000 title claims abstract description 17
- 238000004026 adhesive bonding Methods 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 57
- 238000010168 coupling process Methods 0.000 claims abstract description 57
- 238000005859 coupling reaction Methods 0.000 claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 95
- 238000003860 storage Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 12
- 230000007547 defect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 230000002929 anti-fatigue Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- 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
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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 the field of oil pipes, and discloses a nano-coating high-strength anti-thread-gluing anti-eccentric-wear special threaded oil pipe which comprises an oil pipe and an oil pipe coupling which are assembled together, wherein the thread of the oil pipe coupling adopts API (application program interface) threads, the oil pipe is divided into a flat oil pipe and an external thickened oil pipe, one end of the oil pipe coupling adopts ZB-JTAS threads, the other end of the oil pipe coupling adopts API threads, the two ends of the oil pipe coupling adopt ZB-JTAS threads, a torque shoulder is integrally formed on the inner wall of the oil pipe, the inner wall surface of the oil pipe is flush with the inner wall of the torque shoulder, the torque shoulder is additionally arranged to be in contact with the end of the oil pipe, contact pressure is generated to play a sealing role, the turbulence phenomenon of gas or liquid in the oil pipe is effectively reduced, the energy loss is reduced, meanwhile, the nano-coating high-strength anti-gluing anti-eccentric-wear special threaded oil pipe is particularly suitable for being used as a bailing well, the abrasion can be furthest reduced, and the service life of a bailing rubber piston is prolonged.
Description
Technical Field
The invention relates to the field of oil pipes, in particular to a high-strength anti-thread gluing and anti-eccentric wear special threaded oil pipe with a nano coating.
Background
The oil pipe is a pipeline for transporting crude oil and natural gas from a hydrocarbon reservoir to the surface after drilling is finished, and is used for bearing pressure generated in the process of exploitation, and the processing form of the end part of the oil pipe is as follows: the nano-coating high-strength anti-galling anti-eccentric wear special threaded oil pipe has the advantages that the threaded and the coupling are not thickened, the threaded and the coupling are thickened, the flat end is formed, the threaded and the coupling are not thickened, the threaded and the coupling are thickened, the inner wall of the existing oil pipe is possibly gapped and not leveled, the turbulent flow phenomenon of gas or liquid in the pipeline is possibly caused, the energy loss is large, the abrasion is large, and the service life of a rubber piston is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe, which solves the problems.
(II) technical scheme
In order to achieve the above purpose, the invention provides the following technical scheme: the nano-coating high-strength anti-thread-gluing anti-eccentric-wear special threaded oil pipe comprises an oil pipe and an oil pipe coupling which are assembled together, wherein the thread of the oil pipe coupling adopts API (American Petroleum institute) threads, and the oil pipe is divided into a flat oil pipe and an externally thickened oil pipe.
Preferably, the torque shoulder is integrally formed on the inner wall of the tubing coupling, the inner wall surface of the tubing is flush with the inner wall of the torque shoulder, the torque shoulder is additionally arranged to be in contact with the end of the tubing pipe, contact pressure is generated to play a sealing role, turbulence of gas or liquid in the tubing is effectively reduced, energy loss is reduced, and meanwhile, the oil pipe is particularly suitable for being used as an oil pipe of a bailing well, abrasion can be reduced to the greatest extent, and the service life of the bailing rubber piston is prolonged.
Preferably, one end of the tubing coupling adopts ZB-JTAS threads, the other end of the tubing coupling adopts API threads, and both ends of the tubing coupling adopt ZB-JTAS threads.
Preferably, both ends of the inner wall surface of the tubing coupling are flared, the outer wall surface of the connecting end of the tubing is necked, when the tubing is connected with the tubing coupling, the tubing coupling is flush with the torque shoulder, the tubing coupling adopts a special thread ZB-JTAS structural form, the contact between the torque shoulder and the tube end is increased, and the contact pressure is generated to play a sealing role. When the joint is used, the inner wall of the whole pipe body is completely flush. The rod pipe does not generate impact eccentric wear in the reciprocating motion process of the production operation of the sucker rod.
Preferably, the end face of the oil pipe joint hoop is provided with an RFID intelligent chip which consists of a Reader (Reader), an electronic TAG (TAG), namely a so-called Transponder (Transponder) and an application software system. The information tracking and tracing of the oil pipe information, the product storage management and the like are realized, and the information, the digitization and the automatic management are realized. Each management terminal is provided with management software, a Microsoft Access or SQL Server database is adopted, and the application is simple and easy to operate.
Preferably, the outer surface of the oil pipe is hardened.
And (5) hardening the outer surface of the oil pipe.
The tubing coupling is subjected to surface treatment by adopting nano polymers, the thread anti-sticking capacity is improved, the tubing thread can withstand 20 times of make-up and break-out without thread sticking, and the make-up and break-out test method is executed according to API 5C 5.
Surface quality
The requirements of quality inspection, defect judgment and disposal of the outer surfaces of the pipe body and the coupling are in accordance with the requirements of sections 8.13, 9.12 and 10.14 of API Spec 5CT and the related content of API Spec 5B. Surface imperfections allow depth to be performed in accordance with API Spec 5CT related requirements.
The method comprises the following specific operations: visual inspection of the pipe end was carried out for defects within 1m from the pipe end and longitudinal defects on the inner and outer surfaces of the coupling, and they were subjected to fluorescent magnetic powder flaw detection as specified in ASTM E709.
Screw thread
The threaded connection, the tooth form, the size, the limit deviation and the like of the oil pipe are required to be in accordance with the specification of API Spec 5B.ZB-JTAS special thread specifications, are executed according to the specification of a ZB-JTAS special thread manual, and are required to be in threaded connection according to the screwing torque control range required by a supplier, so that the type and the operation requirements of thread grease are determined.
Mechanical property of oil pipe
The outer surface of the oil pipe needs to be subjected to surface hardening treatment integrally, the surface of the light pipe is rapidly heated to be above Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel) through a special heating mode integrally on the outer surface of the oil pipe, then the surface of the light pipe is rapidly cooled, martensite phase transformation occurs on the surface of the light pipe, and a hardened layer is generated. The anti-fatigue strength of the pipe body is obviously improved, the notch sensitivity is reduced, and the deformation resistance, compression resistance, bending resistance, creep resistance and strength are greatly improved. The mechanical properties, the flattening force and the surface hardening layer of the oil pipe meet the requirements of the following tables, the mechanical property test of the oil pipe is performed according to the specification of ASTM A370, and the sampling method is performed according to the specification of API Spec 5 CT.
Anti-sticking performance of oil pipe
The connection of the oil pipe thread can be subjected to not less than 20 tightening and dismounting operations without thread sticking damage, and the make-up and break-out test method is performed according to API 5C5 and is checked in batches.
Mechanical property of oil pipe coupling
The mechanical properties of the coupling were measured according to the ASTM A370 specification, the sampling method was carried out according to the API Spec 5CT specification, the thickness of the coating was measured by a coating thickness gauge, and the adhesion of the coating was measured by the scratch method.
And (3) performing a torque and hydrostatic pressure test on the oil pipe according to the specification of API Spec 5CT and API Spec 5B, and drying residual water on the inner surface of the pipe after the hydrostatic pressure test is finished.
Detecting an RFID intelligent chip, and visually inspecting the appearance; the temperature resistance is checked by reading and writing information through a radio frequency reader according to the limit temperature specified by a table; the storage capacity is acquired by connecting a special software with a radio frequency reader.
The intelligent chip mainly has the functions of storing and preserving the production information of each oil pipe 1, numbering and managing in and out of the oil pipe, realizing the functions of production, storage, use, recovery, scrapping and logistics management of the oil pipes and facilitating classification management.
Each warehouse logistics management center using users is provided with six sets of handheld radio frequency readers, and the functions of the handheld radio frequency readers comprise the following parts: after oil pipe production is accomplished, can realize writing in the information of oil pipe intelligent chip through the radio frequency read write line, include: product ID, all information of each production process that can be traced.
When the oil field is in well-lifting operation, the workers on the well can write the current service life of the oil pipe recorded by the oil pipe service state monitoring system into the intelligent chip, so that the residual service life of the oil pipe can be effectively recorded and stored.
When the oil pipe is purchased or used and then stored in a warehouse again, warehousing personnel can read all logistics information of the oil pipe in or out or used through the reader-writer and perform classified management and use according to the storage information of the oil pipe.
The hand-held radio frequency reader-writer system mainly comprises a microprocessor, a memory, a radio frequency reading-writing module, a power amplifier and an antenna. The handheld radio frequency reader-writer is matched with the intelligent chip at the end of the oil pipe coupling, and information in the radio frequency intelligent chip can be read, written and operated according to the radio frequency working principle.
The logistics storage management center of each user is provided with a set of management software developed by Microsoft language, each management end is provided with the management software, a Microsoft Access or SQL Server database is adopted, and the application is simple and easy to operate. And the information storage management of the oil pipe information of the managed logistics storage is convenient for a user. The software modular design fully considers the usability of users, and the system has the characteristics of simple operation, practical functions, friendly human-computer interface and the like.
(III) advantageous effects
Compared with the prior art, the invention provides the high-strength anti-thread gluing and anti-eccentric wear special threaded oil pipe with the nano coating, which has the following beneficial effects:
1. the nano-coating high-strength anti-galling anti-eccentric-wear special threaded oil pipe is in contact with the end of the oil pipe by adding the torque shoulder, generates contact pressure to play a sealing role, reduces the turbulence phenomenon of gas or liquid in the pipeline effectively, reduces energy loss, is particularly suitable for being used as an oil pipe of a bailing well, can reduce abrasion to the maximum degree, and prolongs the service life of a bailing rubber piston.
2. According to the nano-coating high-strength anti-thread-gluing anti-eccentric-wear special threaded oil pipe, when the oil pipe is connected with an oil pipe coupling, the oil pipe coupling is flush with a torque shoulder, the oil pipe coupling adopts a special thread ZB-JTAS structural form, the torque shoulder is increased to be in contact with a pipe end, and contact pressure is generated to play a sealing role. When the joint is used, the inner wall of the whole pipe body is completely flush. The rod pipe does not generate impact eccentric wear in the reciprocating motion process of the production operation of the sucker rod.
3. This special screw thread oil pipe of anti eccentric wear of nanometer coating high strength anti-thread gluing, intelligent chip main function is the production information of every oil pipe of storage and save, and serial number and come in and go out the warehouse management, realize oil pipe's production, storage, use, recovery, scrap, commodity circulation management function, the classification management of being convenient for.
4. The outer surface of the oil pipe needs to be subjected to surface hardening treatment integrally, the surface of the light pipe is rapidly heated to be above Ac (hypoeutectoid steel) or Ac (hypereutectoid steel) through a special heating mode integrally on the outer surface of the oil pipe, and then the surface of the light pipe is rapidly cooled, so that martensite phase transformation occurs on the surface of the light pipe, and a hardened layer is generated. The anti-fatigue strength of the pipe body is obviously improved, the notch sensitivity is reduced, and the deformation resistance, compression resistance, bending resistance, creep resistance and strength are greatly improved.
5. The nano process treatment of the special thread tubing coupling thread enables the tubing thread to be screwed up and down twenty times without sticking, the inner wall of the tubing string is level and gapless, the turbulence phenomenon of gas or liquid in a pipeline is reduced effectively, the energy loss is reduced, and the special thread tubing coupling is particularly suitable for being used as a tubing of a bailing well, can reduce abrasion to the maximum extent and prolong the service life of a bailing rubber piston.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. an oil pipe; 2. a tubing coupling; 3. a torque shoulder; 4. and (4) an RFID intelligent chip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the nano-coating high-strength anti-galling anti-eccentric wear special threaded tubing comprises a tubing 1 and a tubing coupling 2 which are assembled together, wherein the threads of the tubing coupling 2 are API threads, and the tubing 1 is divided into a flat tubing and an external thickened tubing.
The inner wall of the oil pipe coupling 2 is integrally formed with a torque shoulder 3, the inner wall surface of the oil pipe 1 is flush with the inner wall of the torque shoulder 3, the torque shoulder 3 is additionally arranged to be in contact with the pipe end of the oil pipe 1, contact pressure is generated to play a sealing role, the turbulence phenomenon of gas or liquid in the pipeline is effectively reduced, energy loss is reduced, and meanwhile the oil pipe coupling is particularly suitable for being used as an oil pipe of a bailing well, abrasion can be reduced to the greatest extent, and the service life of a bailing rubber piston is prolonged.
One end of the tubing coupling 2 adopts ZB-JTAS threads, the other end of the tubing coupling adopts API threads, and both ends of the tubing coupling 2 adopt ZB-JTAS threads.
The two ends of the inner wall surface of the tubing coupling 2 are flared, the outer wall surface of the connecting end of the tubing 1 is in a necking shape, when the tubing 1 is connected with the tubing coupling 2, the tubing coupling 2 is flush with the torque shoulder 3, the tubing coupling 2 adopts a special thread ZB-JTAS structural form, the torque shoulder 3 is increased to be in contact with a tube end, and contact pressure is generated to play a sealing role. When the connector is used, the inner wall of the whole pipe body is completely flush. The rod pipe does not generate impact eccentric wear in the reciprocating motion process of the production operation of the sucker rod.
The end face of the tubing coupling 2 is provided with an RFID intelligent chip 4 which consists of a Reader, an electronic TAG (TAG), a so-called Transponder and an application software system. The information tracking and tracing of the oil pipe information, the product storage management and the like are realized, and the informatization, the digitization and the automatic management are realized. Each management end is provided with management software, a Microsoft Access or SQL Server database is adopted, the application is simple and easy to operate, the intelligent chip 4 mainly has the functions of storing and storing the production information of each oil pipe 1, numbering and managing in and out of the warehouse, the production, storage, use, recovery, scrapping and logistics management functions of the oil pipes 1 are realized, and the classification management is convenient.
And (4) hardening the outer surface of the oil pipe 1.
The tubing coupling 3 is subjected to surface treatment by adopting a nanometer polymer, so that the thread gluing prevention capacity is improved, the tubing thread can withstand 20 times of screwing-on and unscrewing without thread gluing, and the screwing-on and unscrewing test method is carried out according to API 5C 5.
The following table is the flat tubing dimensions and tolerances
The following table is for the upset tubing size and tolerance
And (3) testing the nano coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe:
surface quality
The requirements of quality inspection, defect judgment and treatment of the outer surfaces of the pipe body and the coupling meet the requirements of sections 8.13, 9.12 and 10.14 of API Spec 5CT and the related content of API Spec 5B. Surface imperfections allow depth to be performed in accordance with API Spec 5CT related requirements.
The method comprises the following specific operations: visual inspection of the pipe end was carried out for defects within 1m from the pipe end and longitudinal defects on the inner and outer surfaces of the coupling, and they were subjected to fluorescent magnetic powder flaw detection as specified in ASTM E709.
Screw thread
The threaded connection, the tooth form, the size, the limit deviation and the like of the oil pipe are required to be in accordance with the specification of API Spec 5B.ZB-JTAS special thread specifications, are executed according to the specification of a ZB-JTAS special thread manual, and are required to be in threaded connection according to the screwing torque control range required by a supplier, so that the type and the operation requirements of thread grease are determined.
Mechanical Properties of oil pipe 1
The outer surface of the oil pipe needs to be subjected to surface hardening treatment integrally, the surface of the light pipe is rapidly heated to be above Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel) through a special heating mode integrally on the outer surface of the oil pipe, then the surface of the light pipe is rapidly cooled, martensite phase transformation occurs on the surface of the light pipe, and a hardened layer is generated. The anti-fatigue strength of the pipe body is obviously improved, the notch sensitivity is reduced, and the deformation resistance, compression resistance, bending resistance, creep resistance and strength are greatly improved. The mechanical properties, crush force and surface hardening layer of the oil pipe meet the requirements of the following table, the mechanical property test of the oil pipe is performed according to the specification of ASTM A370, and the sampling method is performed according to the specification of API Spec 5 CT.
Mechanical property of oil pipe coupling 3
Anti-sticking performance of oil pipe 1
The connection of the oil pipe 1 thread should be able to withstand not less than 20 tightening and removal operations without thread-galling damage to the thread, the make-up and break-out test method being carried out according to API 5C5, checked in batches.
Mechanical property of tubing coupling 2
The mechanical properties of the coupling were measured according to the ASTM A370 specification, the sampling method was measured according to the API Spec 5CT specification, the thickness of the coating was measured by a coating thickness gauge, and the adhesion of the coating was measured by a scratch method.
And (3) performing torque and hydrostatic pressure tests on the oil pipe 1 according to the specification of API Spec 5CT and API Spec 5B, and blowing residual water on the inner surface of the pipe after the hydrostatic pressure tests are finished.
Detecting the RFID intelligent chip 4, and visually inspecting the appearance; the temperature resistance is checked by reading and writing information through a radio frequency reader according to the limit temperature specified by the following table; the storage capacity is acquired by connecting a special software with a radio frequency reader.
ZB-JTAS (N) non-thickening oil pipe performance parameter
ZB-JTAS (E) thickened oil pipe performance parameter
RFID radio frequency chip 4 performance index
The intelligent chip 4 has the main functions of storing and preserving the production information of each oil pipe 1, numbering and managing in and out of the warehouse, realizing the production, storage, use, recovery, scrapping and logistics management functions of the oil pipes 1 and facilitating classification management.
Each warehouse logistics management center using users is provided with six sets of handheld radio frequency readers, and the functions of the handheld radio frequency readers comprise the following parts: after the production of the oil pipe 1 is completed, the information writing of the oil pipe intelligent chip 4 can be realized through a radio frequency reader-writer, and the method comprises the following steps: product ID, all information of each production process that can be traced.
When the oil field is in the well-lifting operation, the working personnel on the well can write the current service life of the oil pipe recorded by the use state monitoring system of the oil pipe 1 into the intelligent chip, so that the residual life of the oil pipe 1 can be effectively recorded and stored.
When the oil pipe is purchased or used and then stored in a warehouse again, warehousing personnel can read all logistics information of the oil pipe in or out or used through the reader-writer and perform classified management and use according to the storage information of the oil pipe.
The hand-held radio frequency reader-writer system mainly comprises a microprocessor, a memory, a radio frequency reading-writing module, a power amplifier and an antenna. The handheld radio frequency reader-writer is matched with the intelligent chip at the end of the oil pipe connecting hoop for use, and information inside the radio frequency intelligent chip can be read, written and operated according to the radio frequency working principle.
The logistics storage management center of each user is provided with a set of management software developed by Microsoft language, each management end is provided with the management software, and the management software is developed by Microsoft Access or SQL Server database, so that the application is simple and easy to operate. The method is convenient for the user to perform informatization storage management on the oil pipe information of the governed logistics storage. The software is designed in a modularized manner, the usability of a user is fully considered, and the method has the characteristics of simplicity in operation, practical functions, friendly man-machine interface and the like.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The special threaded oil pipe of anti eccentric wear of anti thread gluing of nanometer coating high strength, oil pipe (1) and tubing coupling (2) including the assembly together, its characterized in that: the thread of the tubing coupling (2) is an API thread, and the tubing (1) is divided into a flat tubing and an external thickened tubing.
2. The nano-coating high-strength anti-thread-galling anti-eccentric-wear special threaded oil pipe according to claim 1, characterized in that: the torque shoulder (3) is integrally formed on the inner wall of the oil pipe coupling (2), and the inner wall surface of the oil pipe (1) is flush with the inner wall of the torque shoulder (3).
3. The nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe according to claim 1, characterized in that: one end of the tubing coupling (2) adopts ZB-JTAS threads, the other end of the tubing coupling adopts API threads, and both ends of the tubing coupling (2) adopt ZB-JTAS threads.
4. The nano-coating high-strength anti-thread-galling anti-eccentric-wear special threaded oil pipe according to claim 1, characterized in that: two ends of the inner wall surface of the tubing coupling (2) are flared, and the outer wall surface of the connecting end of the tubing (1) is contracted.
5. The nano-coating high-strength anti-thread-galling anti-eccentric-wear special threaded oil pipe according to claim 1, characterized in that: and the end face of the tubing coupling (2) is provided with an RFID intelligent chip (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210736001.7A CN115306319A (en) | 2022-06-27 | 2022-06-27 | Nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210736001.7A CN115306319A (en) | 2022-06-27 | 2022-06-27 | Nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe |
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| Publication Number | Publication Date |
|---|---|
| CN115306319A true CN115306319A (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210736001.7A Pending CN115306319A (en) | 2022-06-27 | 2022-06-27 | Nano-coating high-strength anti-thread gluing anti-eccentric wear special threaded oil pipe |
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| CN (1) | CN115306319A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2132767A1 (en) * | 1994-09-23 | 1996-03-24 | Miyuki Yamamoto | Threaded Joint for Oil Well Pipes |
| CN101871324A (en) * | 2010-07-09 | 2010-10-27 | 天津钢管集团股份有限公司 | Connecting structure of special high-pressure completion oil pipe |
| CN111425149A (en) * | 2019-10-10 | 2020-07-17 | 陕西鑫华成石油科技有限公司 | Anti-corrosion tubing coupling |
| CN112049580A (en) * | 2020-10-16 | 2020-12-08 | 西安德信成科技有限责任公司 | Connecting joint of bimetal composite oil pipe |
| CN112554810A (en) * | 2020-12-25 | 2021-03-26 | 山东永利精工石油装备股份有限公司 | High-strength corrosion-resistant aluminum alloy special threaded oil well pipe |
-
2022
- 2022-06-27 CN CN202210736001.7A patent/CN115306319A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2132767A1 (en) * | 1994-09-23 | 1996-03-24 | Miyuki Yamamoto | Threaded Joint for Oil Well Pipes |
| CN101871324A (en) * | 2010-07-09 | 2010-10-27 | 天津钢管集团股份有限公司 | Connecting structure of special high-pressure completion oil pipe |
| CN111425149A (en) * | 2019-10-10 | 2020-07-17 | 陕西鑫华成石油科技有限公司 | Anti-corrosion tubing coupling |
| CN112049580A (en) * | 2020-10-16 | 2020-12-08 | 西安德信成科技有限责任公司 | Connecting joint of bimetal composite oil pipe |
| CN112554810A (en) * | 2020-12-25 | 2021-03-26 | 山东永利精工石油装备股份有限公司 | High-strength corrosion-resistant aluminum alloy special threaded oil well pipe |
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