CN103696755B - Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint - Google Patents
Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint Download PDFInfo
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- CN103696755B CN103696755B CN201310303374.6A CN201310303374A CN103696755B CN 103696755 B CN103696755 B CN 103696755B CN 201310303374 A CN201310303374 A CN 201310303374A CN 103696755 B CN103696755 B CN 103696755B
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- 238000009413 insulation Methods 0.000 title claims abstract description 36
- 238000005553 drilling Methods 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 8
- 210000002445 nipple Anatomy 0.000 claims description 116
- 239000000919 ceramic Substances 0.000 claims description 20
- -1 polytetrafluoroethylene Polymers 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 239000003082 abrasive agent Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000002386 leaching Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005269 aluminizing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000004801 Chlorinated PVC Substances 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Insulators (AREA)
Abstract
The invention discloses an insulation pup joint used for electromagnetic wireless measurement while drilling and a manufacturing method for the insulation pup joint, and is used for solving the technical problem that the insulation reliability of an insulation pup joint manufactured by adopting a traditional method is poor. The technical scheme is that the insulation pup joint consists of a middle section and two pup joints; the two pup joints are connected with both ends of the middle section through threads; the middle section and two pup joints connection interface placed insulation gasket; after the insulation pup joint is assembled, an inside liner is prepared on the inner cylindrical surface of the insulation pup joint, and an insulation wearing layer is prepared on the outer cylindrical surface of the insulation pup joint; the inside liner and the insulation wearing layer are respectively distributed on the inner cylindrical surface and the outer cylindrical surface of the whole insulation pup joint. As the threads are protected by adopting a mode that an inner insulation layer and an outer insulation layer cover threaded seams, the phenomenon that insulation is poor due to the fact that water seeps into the threads during a using process is avoided, and the insulation reliability of the insulation pup joint is improved. Tested by a 1000V megameter, the insulation resistance between the two pup joints is 500-1000 megohm.
Description
Technical field
The present invention relates to a kind of insulating short section, more particularly to a kind of electromagnetic wireless measurement while drilling insulating short section.Also relate to
And the preparation method of this electromagnetic wireless measurement while drilling insulating short section.
Background technology
Electromagnetic wireless measurement while drilling is to carry out underground TT＆C system and ground base station communication using electromagnetic wave, realizes drill bit
Track detection with control and underground survey data ground based processor real-time processing.Insulating short section is wireless measuring instrument while drilling
Device carries out the key of radio communication, and it each acts as the two of wireless signal transmission antenna by making the drilling rod of upper and lower ends insulate
Pole, so as to carry out the transmitting and reception of wireless signal.The insulating properties of insulating short section are directly connected to the quality of wireless signal, because
This insulating short section needs to keep good insulating properties under the complex working condition of underground.The short circuit that insulate simultaneously will also be responsible for the biography of the pressure of the drill
The abrasion of the borehole wall is passed and bears, so also to have mechanical property and abrasion resistance properties higher.The related system of external insulating short section
Standby technology comparative maturity, but technology is undisclosed.Domestic insulating short section is mainly using exhausted in the coating of metal tube connecting portion
Prepared by the mode of edge layer, insulating short section intensity can match in excellence or beauty with common drilling rod, but insulating reliability and abrasion resistance properties and foreign countries
Product still has gap.
Document " Authorization Notice No. is the Chinese utility model patent of CN202225229U " discloses the ore deposit probing of a kind of ground and uses
Insulating short section and preparation method thereof, insulating short section is constituted by nipple body and using the protection joint for being threaded in two ends, in
Between nipple body surfaces externally and internally and end face all coated ceramic coatings, and in the mixing of its outer surface subsectin bottler diamond and ebonite
Material, strengthens its wearability.On the one hand ceramics be fragile material, assembling and use during threaded portion ceramics be easy to because
Collide with and scratch and come off；On the other hand without waterproof measure, threaded joints partial volume easily penetrates into moisture during use.Two kinds are asked
Topic can all cause defective insulation to cause insulating short section to fail.Therefore, although the method prepare insulating short section mechanical property and
Abrasion resistance properties are all preferable, but insulating reliability is poor.
The content of the invention
Poor in order to overcome the shortcomings of existing insulating short section insulating reliability, the present invention provides a kind of electromagnetic wireless measurement while drilling
Use insulating short section.The insulating short section is made up of middle node and two pipe nipples, and two pipe nipples are threadedly attached in the two of middle node
End, middle node and two connecting interfaces of pipe nipple place insulating washer, after insulating short section assembling, liner are prepared in its inner cylinder face
Layer, insulation wearing layer is prepared in its external cylindrical surface, and inner liner and insulation wearing layer are respectively distributed to the inside and outside of whole insulating short section
The face of cylinder.All threaded portions of middle node and two pipe nipples carry out differential arc oxidation after aluminizing, and its surface is had ceramic insulation
Layer, the screw thread leaching modeling insulating polymeric material being connected with two pipe nipples to middle node on this basis, can improve insulating short section
Insulating reliability.
The preparation method that the present invention also provides this electromagnetic wireless measurement while drilling insulating short section.
The technical solution adopted for the present invention to solve the technical problems is：A kind of electromagnetic wireless measurement while drilling is short with insulation
Section, including middle node 1, the first pipe nipple 2 and the second pipe nipple 3, the two ends of middle node 1 are the hollow pipe fitting of truncated cone-shaped structure, round platform
Slope side have screw thread.One end of first pipe nipple 2 and the second pipe nipple 3 is respectively corresponding structure with the two ends of middle node 1, is passed through
Screw thread is connected with middle node 1；The free end of the first pipe nipple 2 and the second pipe nipple 3 is the helicitic texture for cooperating, and is characterized in institute
The first insulating washer 4 of placement at the connecting interface minor diameter of the pipe nipple 2 of middle node 1 and first and the second pipe nipple 3 is stated, connecting interface is big
The second insulating washer 5 is placed at diameter.Inner liner 6 and insulation wearing layer 7 are respectively distributed to the inside and outside cylinder of whole insulating short section
Face.The screw thread of middle node 1, the first pipe nipple 2 and the second pipe nipple 3 is matched with the screw thread of standard drill pipe.
The material of the insulating washer 5 of first insulating washer 4 and second is polytetrafluoroethylene (PTFE).
A kind of preparation method of above-mentioned electromagnetic wireless measurement while drilling insulating short section, is characterized in comprising the following steps：
Step one, using non-magnetic material processing middle node 1, the first pipe nipple 2 and the second pipe nipple 3, the pipe nipple of middle node 1 and first
2 and second pipe nipple 3 screw thread and standard drill pipe Screw Thread Fit Clearance 0.25-0.30mm.
Step 2, the inner and outer surfaces to middle node 1 and the pipe nipple 2 of middle node 1 and first and the connection screw thread of the second pipe nipple 3
Surface is eliminated rust, sandblasting and cleaning are pre-processed.
Step 3, the outer surface to the middle node 1 by pretreatment and middle node 1 connect with the first pipe nipple 2 and the second pipe nipple 3
The aluminium lamination of the plated surface 0.2mm thickness of screw thread is connect, aluminium coated is then transformed into by dielectric ceramic layer by differential arc oxidation.
Step 4, outside dielectric ceramic layer soak modeling 0.1mm thickness plastic layer.In by the middle node 1 of pretreatment
Surface prepares plastics inside floor 6.
Step 5, middle node 1, the first pipe nipple 2 and the second pipe nipple 3 are assembled together, two are tested using 1000V megameters
Insulaion resistance between individual pipe nipple, if insulaion resistance >=500 megaohm, carries out next process, is unsatisfactory for the weight of insulating requirements
Freshly prepared insulating barrier.
Step 6, the dielectric ceramic layer in insulating short section outer wall, the outer layered coated insulating adhesive of polyethylene and abrasive material, often
The thickness control of layer abrasive material is in 0.2-0.3mm.
The non-magnetic material of the middle node 1, the first pipe nipple 2 and the second pipe nipple 3 is that nonmagnetic steel, high-strength copper alloy or titanium are closed
Any one of gold.
The Screw Thread Fit Clearance of the middle node 1, the connection screw thread of the first pipe nipple 2 and the second pipe nipple 3 and standard drill pipe
0.25-0.30mm。
The plastics are any of polyethylene, polypropylene, PVC-U, chliorinated polyvinyl chloride or polytetrafluoroethylene (PTFE)
Kind.
The abrasive material is any one of quartz sand, schmigel, diamond dust or cubic boron nitride or appoints several.
The beneficial effects of the invention are as follows：Insulating short section is made up of middle node and two pipe nipples, and two pipe nipples are connected by screw thread
The two ends of middle node are connected on, middle node and two connecting interfaces of pipe nipple place insulating washer, after insulating short section assembling, in it
The face of cylinder prepares inner liner, and insulation wearing layer is prepared in its external cylindrical surface, and inner liner and insulation wearing layer are respectively distributed to entirely
The inside and outside face of cylinder of insulating short section.All threaded portions of middle node and two pipe nipples carry out differential arc oxidation after aluminizing, and make its table
Face has the insulation wearing layer of pottery, the screw thread leaching modeling polymer insulation being connected with two pipe nipples to middle node on this basis
Material.Due to improving the insulating properties of insulating short section by the way of polymeric dielectric layer is combined using ceramic insulation wearing layer
Can, polymeric dielectric layer serves the effect of sealing waterproof as overcoat to connecting portion, and effectively prevents from assembling and use
During threaded portion ceramics because colliding with and scratching the failure of insulation problem caused by coming off.Using external insulation layer covering screw thread
The mode of seam is protected to screw thread, it is to avoid infiltration causes defective insulation in screw thread during use, improves insulating short section
Insulating reliability.Through the insulaion resistance that 1000V megameters are tested between two pipe nipples, insulaion resistance is 500~1,000,000,000
Europe.
The present invention is elaborated with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the structural representation of electromagnetic wireless measurement while drilling insulating short section of the present invention.
In figure, 1- middle nodes；The pipe nipples of 2- first；The pipe nipples of 3- second；The insulating washers of 4- first；The insulating washers of 5- second；6-
Inner liner；7- insulation wearing layers.
Specific embodiment
Following examples reference picture 1.
Embodiment 1.Electromagnetic wireless measurement while drilling of the present invention insulating short section includes that middle node 1, the first pipe nipple 2 and second are short
Section 3.The two ends of middle node 1 are the hollow pipe fittings of truncated cone-shaped structure, and there is screw thread on the slope side of round platform.First pipe nipple 2 and the second pipe nipple 3
One end be respectively corresponding structure with the two ends of middle node 1, be connected with middle node 1 by screw thread.Middle node 1 is short with first
The first insulating washer 4 is placed at the connecting interface minor diameter of the pipe nipple 3 of section 2 and second, second is placed at connecting interface major diameter exhausted
Edge packing ring 5.The free end of the first pipe nipple 2 and the second pipe nipple 3 is the helicitic texture for cooperating.Inner liner and insulation wearing layer point
The inside and outside face of cylinder of whole insulating short section is not distributed in.Middle node externally threaded hollow pipe fitting for two ends are machined with, the first pipe nipple
2 is the female hollow pipe fitting in two ends, and the second pipe nipple 3 is hollow pipe fitting, and there is internal thread the one end being connected with middle node 1,
The other end is free end, and there is external screw thread free end.Middle node 1, the first pipe nipple 2 and the second pipe nipple 3 use excellent in mechanical performance
Nonmagnetic steel or high-strength copper alloy or titanic alloy machining form, the screw thread of middle node, the first pipe nipple 2 and the second pipe nipple 3 with
The screw thread matching of standard drill pipe, connection screw thread between the two ensures the Screw Thread Fit Clearance 0.25- with standard drill pipe when processing
0.30mm, and to screw thread rounding.The material of the first insulating washer 4 and the second insulating washer 5 is polytetrafluoroethylene (PTFE).
Embodiment 2.
1）Using nonmagnetic steel processing middle node 1, the first pipe nipple 2 and the second pipe nipple 3, the pipe nipple 2 and second of middle node 1 and first
The matching thread of pipe nipple 3 ensures the Screw Thread Fit Clearance 0.25-0.30mm with standard drill pipe when processing.
2）Inner and outer surfaces and middle node 1 to middle node 1 are entered with the surface of the first pipe nipple 2 and the connection screw thread of the second pipe nipple 3
The surface preparations such as row rust cleaning, sandblasting and cleaning.
3）Outer surface and middle node 1 to the middle node 1 by pretreatment are connected spiral shell with the first pipe nipple 2 and the second pipe nipple 3
The aluminium lamination of the plated surface 0.2mm thickness of line, is then transformed into dielectric ceramic layer by differential arc oxidation by aluminium coated.
4）In the inner surface of the middle node 1 by pretreatment, and treated dielectric ceramic layer outer surface and centre
The polyethylene of the surface leaching modeling 0.1mm thickness of the pipe nipple 2 of section 1 and first and the connection screw thread of the second pipe nipple 3.
5）Middle node 1, the first pipe nipple 2 and the second pipe nipple 3 are assembled together, it is short using 1000V megameters test two
Insulaion resistance between section, if insulaion resistance >=500 megaohm, carries out next process, is unsatisfactory for the system again of insulating requirements
Standby insulating barrier.
6）The outer layered coated insulating adhesive of dielectric ceramic layer, polyethylene and 100 mesh diamond dust in insulating short section outer wall,
Every layer of thickness control of diamond dust is in 0.25mm or so, the integral thickness 2mm of the wearing layer that insulate.
7）Finished product detection：Insulating short section to preparing carries out the detection of final insulating properties, using 1000V megameters
Insulaion resistance between two pipe nipples of test, insulaion resistance >=500 megaohm are qualified insulating short section finished product.
Embodiment 3.
1）Using high-strength copper alloy processing middle node 1, the first pipe nipple 2 and the second pipe nipple 3, the pipe nipple 2 of middle node 1 and first and
The matching thread of the second pipe nipple 3 ensures the Screw Thread Fit Clearance 0.25-0.30mm with standard drill pipe when processing.
2）Inner and outer surfaces and middle node 1 to middle node 1 are entered with the surface of the first pipe nipple 2 and the connection screw thread of the second pipe nipple 3
The surface preparations such as row rust cleaning, sandblasting and cleaning.
3）Outer surface and middle node 1 to the middle node 1 by pretreatment are connected spiral shell with the first pipe nipple 2 and the second pipe nipple 3
The aluminium lamination of the plated surface 0.2mm thickness of line, is then transformed into dielectric ceramic layer by differential arc oxidation by aluminium coated.
4）In the inner surface of the middle node 1 by pretreatment, and treated dielectric ceramic layer outer surface and centre
The polypropylene of the surface leaching modeling 0.1mm thickness of the pipe nipple 2 of section 1 and first and the connection screw thread of the second pipe nipple 3.
5）Middle node 1, the first pipe nipple 2 and the second pipe nipple 3 are assembled together, it is short using 1000V megameters test two
Insulaion resistance between section, if insulaion resistance >=500 megaohm, carries out next process, is unsatisfactory for the system again of insulating requirements
Standby insulating barrier.
6）The outer layered coated insulating adhesive of dielectric ceramic layer, polyethylene and 80 mesh schmigels in insulating short section outer wall,
Every layer of thickness control of schmigel is in 0.25mm or so, the integral thickness 2mm of the wearing layer that insulate.
7）Finished product detection：Insulating short section to preparing carries out the detection of final insulating properties, using 1000V megameters
Insulaion resistance between two pipe nipples of test, insulaion resistance >=500 megaohm are qualified insulating short section finished product.
Embodiment 4.
1）Using titanic alloy machining middle node 1, the first pipe nipple 2 and the second pipe nipple 3, the pipe nipple 2 and second of middle node 1 and first
The matching thread of pipe nipple 3 ensures the Screw Thread Fit Clearance 0.25-0.30mm with standard drill pipe when processing.
2）Inner and outer surfaces and middle node 1 to middle node 1 are entered with the surface of the first pipe nipple 2 and the connection screw thread of the second pipe nipple 3
The surface preparations such as row rust cleaning, sandblasting and cleaning.
3）Outer surface and middle node 1 to the middle node 1 by pretreatment are connected spiral shell with the first pipe nipple 2 and the second pipe nipple 3
The aluminium lamination of the plated surface 0.2mm thickness of line, is then transformed into dielectric ceramic layer by differential arc oxidation by aluminium coated.
4）In the inner surface of the middle node 1 by pretreatment, and treated dielectric ceramic layer outer surface and centre
The PVC-U or chlorinated polyvinyl chloride of the surface leaching modeling 0.1mm thickness of the pipe nipple 2 of section 1 and first and the connection screw thread of the second pipe nipple 3
Ethene or polytetrafluoroethylene (PTFE).
5）Middle node 1, the first pipe nipple 2 and the second pipe nipple 3 are assembled together, it is short using 1000V megameters test two
Insulaion resistance between section, if insulaion resistance >=500 megaohm, carries out next process, is unsatisfactory for the system again of insulating requirements
Standby insulating barrier.
6）The outer layered coated insulating adhesive of dielectric ceramic layer, polyethylene in insulating short section outer wall and 80 mesh quartz sands,
Cubic boron nitride and diamond dust, every layer of thickness control of quartz sand, cubic boron nitride and diamond dust insulate resistance in 0.25mm or so
Grind the integral thickness 2mm of layer.
7）Finished product detection：Insulating short section to preparing carries out the detection of final insulating properties, using 1000V megameters
Insulaion resistance between two pipe nipples of test, insulaion resistance >=500 megaohm are qualified insulating short section finished product.
The insulaion resistance tested between two pipe nipples using 1000V megameters, the test data of insulaion resistance is shown in Table 1.
The sample performance test data of table 1
As can be seen from Table 1, three groups of insulaion resistances of insulating short section have all reached more than 1000M Ω, show system of the present invention
Standby insulating short section has insulating properties high, has fully met requirement of the electromagnetic measurement while drilling to insulating short section insulating properties.
Claims (4)
1. a kind of preparation method of electromagnetic wireless measurement while drilling insulating short section, insulating short section includes middle node (1), the first pipe nipple
(2) and the second pipe nipple (3), the two ends of middle node (1) are the hollow pipe fittings of truncated cone-shaped structure, and there is screw thread on the slope side of round platform；First
One end of pipe nipple (2) and the second pipe nipple (3) is respectively corresponding structure with the two ends of middle node (1), by screw thread and centre
Section (1) connection；The free end of the first pipe nipple (2) and the second pipe nipple (3) is the helicitic texture for cooperating, it is characterised in that described
The first insulating washer (4), connection are placed at middle node (1) and the connecting interface minor diameter of the first pipe nipple (2) and the second pipe nipple (3)
The second insulating washer (5) is placed at interface major diameter；Inner liner (6) and insulation wearing layer (7) are respectively distributed to entirely to insulate short
The inside and outside face of cylinder of section；The screw thread of middle node (1), the first pipe nipple (2) and the second pipe nipple (3) is matched with the screw thread of standard drill pipe；
The material of first insulating washer (4) and the second insulating washer (5) is polytetrafluoroethylene (PTFE)；
The preparation method of insulating short section is comprised the following steps：
Step one, middle node (1), the first pipe nipple (2) and the second pipe nipple (3), middle node (1) and first are processed using non-magnetic material
The screw thread of pipe nipple (2) and the second pipe nipple (3) and the Screw Thread Fit Clearance 0.25-0.30mm of standard drill pipe；
Step 2, the inner and outer surfaces to middle node (1) and middle node (1) are connected spiral shell with the first pipe nipple (2) and the second pipe nipple (3)
The surface of line is eliminated rust, sandblasting and cleaning are pre-processed；
Step 3, the outer surface to the middle node (1) by pretreatment and middle node (1) and the first pipe nipple (2) and the second pipe nipple
(3) aluminium lamination of the plated surface 0.2mm thickness of connection screw thread, is then transformed into dielectric ceramic layer by differential arc oxidation by aluminium coated；
Step 4, outside dielectric ceramic layer soak modeling 0.1mm thickness plastic layer；In the interior table of the middle node (1) by pretreatment
Face prepares plastics inside floor (6)；
Step 5, middle node (1), the first pipe nipple (2) and the second pipe nipple (3) are assembled together, are tested using 1000V megameters
Insulaion resistance between first pipe nipple (2) and the second pipe nipple (3), if insulaion resistance >=500 megaohm, carries out next process,
Be unsatisfactory for insulating requirements prepares insulating barrier again；
Step 6, the dielectric ceramic layer in insulating short section outer wall, the outer layered coated insulating adhesive of plastic layer and abrasive material, every layer of mill
The thickness control of material is in 0.2-0.3mm.
2. the preparation method of electromagnetic wireless measurement while drilling insulating short section according to claim 1, it is characterised in that：It is described
The non-magnetic material of middle node (1), the first pipe nipple (2) and the second pipe nipple (3) is appointing for nonmagnetic steel, high-strength copper alloy or titanium alloy
It is a kind of.
3. the preparation method of electromagnetic wireless measurement while drilling insulating short section according to claim 1, it is characterised in that：It is described
Plastics are any one of polyethylene, polypropylene, PVC-U, chliorinated polyvinyl chloride or polytetrafluoroethylene (PTFE).
4. the preparation method of electromagnetic wireless measurement while drilling insulating short section according to claim 1, it is characterised in that：It is described
Abrasive material is any one of quartz sand, schmigel, diamond dust or cubic boron nitride or appoints several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303374.6A CN103696755B (en) | 2013-07-18 | 2013-07-18 | Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303374.6A CN103696755B (en) | 2013-07-18 | 2013-07-18 | Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696755A CN103696755A (en) | 2014-04-02 |
| CN103696755B true CN103696755B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310303374.6A Active CN103696755B (en) | 2013-07-18 | 2013-07-18 | Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863573B (en) * | 2015-06-01 | 2017-03-08 | 中国地质大学（武汉） | A kind of insulating short section and preparation method thereof |
| CN107546487B (en) * | 2016-06-29 | 2020-12-11 | 中国石油化工股份有限公司 | High-strength insulated antenna coupling assembly |
| CN114754056A (en) * | 2021-04-22 | 2022-07-15 | 苏州希瑞格机械科技有限公司 | Hydraulic bolt and surface modification composite treatment process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233961Y (en) * | 2008-06-04 | 2009-05-06 | 中国石油集团钻井工程技术研究院 | Insulation dipole wireless transmission antenna in conjunction with drill |
| CN202348135U (en) * | 2011-11-23 | 2012-07-25 | 德州联合石油机械有限公司 | Electromagnetic wave pup joint |
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