CN109488224A - A kind of production method of oil pipe, box cupling and box cupling - Google Patents
A kind of production method of oil pipe, box cupling and box cupling Download PDFInfo
- Publication number
- CN109488224A CN109488224A CN201910000852.3A CN201910000852A CN109488224A CN 109488224 A CN109488224 A CN 109488224A CN 201910000852 A CN201910000852 A CN 201910000852A CN 109488224 A CN109488224 A CN 109488224A
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- sleeve
- oil pipe
- box cupling
- ontology
- interconnecting piece
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000003921 oil Substances 0.000 claims abstract description 101
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002421 anti-septic effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000037237 body shape Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000010460 hemp oil Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
- E21B17/08—Casing joints
- E21B17/085—Riser connections
Landscapes
- 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)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to oil pipes, clip technical field, in particular a kind of oil pipe, the production method of box cupling and box cupling, including the tube body that oils, the bottom of the tube body that oils is connected with upper flange plate sleeve, uniformly card fixation offers connecting hole on the upper flange plate sleeve, the upper flange plate sleeve is correspondingly provided with seal washer far from the end face for the tube body that oils, the seal washer is correspondingly provided with lower flange sleeve far from the end face of upper flange plate sleeve, the lower flange sleeve is far from being connected with lower oil pipe ontology on the end face of seal washer, fixation offers lower connecting hole on the lower flange sleeve, the lower oil pipe ontology is through lower flange sleeve and extends lower flange sleeve inner, external thread section is fixed on the lower oil pipe ontology and positioned at ring flange sleeve inner.The advantages that present invention can make its connection connection more stable and have that antiseptic property is high by setting, and abrasion resistance is strong, good seal performance.
Description
Technical field
The present invention relates to oil pipe, clip technical field, the production method of specially a kind of oil pipe, box cupling and box cupling.
Background technique
With the development of petroleum industry, largely there is deep-well, ultradeep well, and geological conditions, operation in oil field development production
Environment is more complicated, severe, therefore is power tool necessary to exploitation oil and natural gas in oil pipe, generally in operation,
Several hundred oil pipes are connected through a screw thread the tubing string to be formed up to thousands of meters, are recovered the oil in tripping in pit shaft, the company between oil pipe
Connecing mode is usually to be attached using tubing coupling, and tubing coupling has tubulose box cupling ontology, and the both ends of box cupling ontology have
Internal screw thread is connected, when using tubing coupling connected pipes, connects internal screw thread having externally threaded oil pipe to be screwed into tubing coupling
It is interior, so as to form petroleum continuative transport pipeline, realize the continuative transport of petroleum.Above-mentioned tubing coupling in the prior art and oil pipe
Between connection sealing be usually first to wind glass fiber or the rope made of hemp in the external screw thread of oil pipe, later being tied with glass fiber or the rope made of hemp
Oil pipe is screwed into tubing coupling, and sealing effect is bad, and crude oil leakage phenomenon is easy to appear in use process and is not connected to effect
Do not have corrosion-resistant effect while unstable, makes the reduction of its service life.
In conclusion the present invention propose the production method of a kind of oil pipe, box cupling and box cupling improve presently, there are the problem of.
Summary of the invention
The purpose of the present invention is to provide the production methods of a kind of oil pipe, box cupling and box cupling, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
The production method of a kind of oil pipe, box cupling and box cupling, including the tube body that oils, the bottom connection of the tube body that oils
There is upper flange plate sleeve, uniformly blocks fixation on the upper flange plate sleeve and offer connecting hole, the upper flange plate sleeve is remote
End face from the tube body that oils is correspondingly provided with seal washer, and the seal washer is correspondingly provided with far from the end face of upper flange plate sleeve
Lower flange sleeve, the lower flange sleeve is far from being connected with lower oil pipe ontology, the lower flange on the end face of seal washer
Fixed on disk sleeve to offer lower connecting hole, the lower oil pipe ontology is through lower flange sleeve and extends in lower flange sleeve
Portion on the lower oil pipe ontology and is located at ring flange sleeve inner and is fixed with external thread section, on the external thread section and
Clip ontology is internally connected in upper flange plate sleeve and lower flange sleeve, the upper flange plate sleeve and clip ontology
Junction is correspondingly provided with upper seal, and the junction of the lower flange sleeve and clip ontology is correspondingly provided with lower seal, institute
State on seal washer it is uniformly fixed offer connecting hole, the clip ontology include upper interconnecting piece, connection sleeve, lower interconnecting piece,
Upper fixed seal ring, lower fixed seal ring, the connection sleeve inner hub location are fixed with interconnecting piece, the connector sleeve
The junction of cylinder and upper interconnecting piece is correspondingly provided with upper fixed seal ring, and the other side of the inside of the connection sleeve is fixed with down
Interconnecting piece, the lower interconnecting piece are correspondingly provided with lower fixed seal ring with the junction for connecting sleeve.
Preferably, steps are as follows for the production method of the clip ontology:
S1；High-carbon-chromium bearing steel Gcr15SiMn is chosen for raw material and according to the Design of Screw Thread drawing inside oil pipe；
S2；Forging processing: high-carbon-chromium bearing steel Gcr15SiMn is processed into blank similar with clip body shape；
S3；Annealing: being heated to 790-810 DEG C of heat preservation 2-6h in furnace, with 10-30 DEG C/h, be cooled to 600 DEG C hereinafter,
It comes out of the stove air-cooled；
S4；Turnery processing: the axis of turning and clip body shape, and groove milling is carried out to the cylinder of connection sleeve-shaped；
S5；Screw thread process: spiral shell is carried out according to the inner wall that the drawing of design first carries out groove milling to the cylinder of connection sleeve-shaped
Line processing, in the screw thread process of the axis of clip body shape；
S6；For high-carbon-chromium bearing steel Gcr15SiMn, heat treatment includes quenching and lonneal quenching temperature:
820-840 (DEG C) soaking times: 1-2h, cooling medium: oil；Lonneal: heating temperature: 150-180 (DEG C) soaking times:
2-5h, the type of cooling: air-cooled；
S7；Grinding, trimming, burr obtain molding clip ontology.
Preferably, the seal washer, upper seal, lower seal, upper fixed seal ring, lower fixed seal ring use
Material is polyurethanes.
Preferably, the tube body that oils is identical as the structure of lower oil pipe ontology, the internal screw thread that the connection sleeve is equipped with
It is threadedly coupled with external thread section and forms phosphatization coating in threaded connection section surface granosealing, the thickness of phosphatization coating is not small
In 15 μm.
Preferably, be equipped on the upper interconnecting piece and lower interconnecting piece screw thread and with tube body and the lower oil pipe ontology of oiling
The internal screw thread that inside is equipped with is correspondingly arranged and to be threadedly coupled, and the junction of the upper interconnecting piece and the tube body that oils is described
Pass through surface granosealing under lower interconnecting piece at the connection section surface of oil pipe ontology and forms phosphatization coating, the thickness of phosphatization coating
Not less than 15 μm.
Preferably, the upper connecting hole, lower connecting hole are threaded hole and are correspondingly arranged with connecting hole, the upper connecting hole
By being sequentially connected connecting hole, connecting hole under bolt.
Preferably, the upper flange plate sleeve, lower flange sleeve weld are in the outer of oil tube body and lower oil pipe ontology
Side.
Preferably, the tube body that oils, the outside of lower oil pipe ontology and upper interconnecting piece, lower interconnecting piece are connectivity structure.
Preferably, fixed sealing ring, lower fixed seal ring founding fixed form are used through heating connection sleeve
Outside by fixed seal ring, lower fixed seal ring founding to connection sleeve and upper interconnecting piece, lower interconnecting piece junction.
Preferably, the upper flange plate sleeve, lower flange sleeve and the fit system for connecting sleeve are clearance fit.
Compared with prior art, the beneficial effects of the present invention are:
1, it in the present invention, is threadedly coupled with external thread section and by connecting the internal screw thread that sleeve is equipped in threaded connection section
Surface granosealing forms phosphatization coating, the connection of the thickness of phosphatization coating oil pipe ontology not less than 15 μm and under lower interconnecting piece
Pass through surface granosealing at section surface and form phosphatization coating, the thickness of phosphatization coating has its junction not less than 15 μm
Abrasion resistance and corrosion resistance, extend service life.
2, in the present invention, connected by design clip ontology and in upper flange plate sleeve and lower flange sleeve by bolt
It connects, is that oil pipe is attached three times, keeps the connection structure of two oil pipes more stable, and can be normal to ensure that
Work.
3, close by heating by being used in upper fixed seal ring, lower fixed seal ring founding fixed form in the present invention
Then founding to connection sleeve and upper flange plate sleeve, lower flange sleeve and connect sleeve junction equipped with upper close to seal ring outer diameter
Seal, lower seal keep its sealing effect better, avoid and are easy to appear crude oil leakage phenomenon in use process.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is the lower oil pipe body construction schematic diagram of the present invention；
Fig. 3 is the whole overall structure diagram of the present invention；
Fig. 4 is gasket structure schematic diagram of the present invention；
Fig. 5 is clip body construction schematic diagram of the present invention；
Fig. 6 is clip ontology entirety schematic cross-sectional view of the present invention.
In figure: 1- oils tube body, 2- upper flange plate sleeve, the upper connecting hole of 3-, 4- seal washer, 5- lower flange set
Connecting hole, the 8- end of thread, 9- clip ontology, 10- upper seal, 11- lower seal, 12- connect under oil pipe ontology, 7- under cylinder, 6-
Connect under hole, the upper interconnecting piece of 13-, 14- connection sleeve, 15- fixed seal ring under interconnecting piece, the upper fixed seal ring of 16-, 17-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution:
The bottom of the production method of a kind of oil pipe, box cupling and box cupling, including the tube body 1 that oils, the tube body 1 that oils connects
It is connected to upper flange plate sleeve 2, uniformly blocks fixation on the upper flange plate sleeve 2 and offers connecting hole 3, the upper flange plate set
Cylinder 2 is correspondingly provided with seal washer 4, the end of the seal washer 4 far from upper flange plate sleeve 2 far from the end face for the tube body 1 that oils
Face is correspondingly provided with lower flange sleeve 5, is connected with lower oil pipe sheet on the end face of the lower flange sleeve 5 far from seal washer 4
Body 6, it is fixed on the lower flange sleeve 5 to offer lower connecting hole 7, the lower oil pipe ontology 6 through lower flange sleeve 5 simultaneously
Extend inside lower flange sleeve 5, is fixed with external screw thread on the lower oil pipe ontology 6 and inside ring flange sleeve 5
Section 8 is internally connected with clip ontology 9, institute on the external thread section 8 and in upper flange plate sleeve 2 and lower flange sleeve 5
The junction for stating upper flange plate sleeve 2 and clip ontology 9 is correspondingly provided with upper seal 10, the lower flange sleeve 5 and clip
The junction of ontology 9 is correspondingly provided with lower seal 11, uniformly fixes on the seal washer 4 and offers connecting hole 12, the card
Binding round ontology 9 includes upper interconnecting piece 13, connection sleeve 14, lower interconnecting piece 15, upper fixed seal ring 16, lower fixed seal ring 17, institute
It states connection 14 inner hub location of sleeve and is fixed with interconnecting piece 13, the junction of the connection sleeve 14 and upper interconnecting piece 13
It is correspondingly provided with fixed seal ring 16, the other side of the inside of the connection sleeve 14 is fixed with lower interconnecting piece 15, under described
Interconnecting piece 15 is correspondingly provided with lower fixed seal ring 17 with the junction for connecting sleeve 14.
Steps are as follows for the production method of the clip ontology 9:
S1；High-carbon-chromium bearing steel Gcr15SiMn is chosen for raw material and according to the Design of Screw Thread drawing inside oil pipe；
S2；Forging processing: high-carbon-chromium bearing steel Gcr15SiMn is processed into blank similar with 9 shape of clip ontology；
S3；Annealing: being heated to 790-810 DEG C of heat preservation 2-6h in furnace, with 10-30 DEG C/h, be cooled to 600 DEG C hereinafter,
It comes out of the stove air-cooled；
S4；Turnery processing: the axis of turning and 9 shape of clip ontology, and groove milling is carried out to the cylinder of connection 14 shape of sleeve；
S5；Screw thread process: it is carried out according to the inner wall that the drawing of design first carries out groove milling to the cylinder of connection 14 shape of sleeve
Screw thread process, in the screw thread process of the axis of 9 shape of clip ontology；
S6；For high-carbon-chromium bearing steel Gcr15SiMn, heat treatment includes quenching and lonneal quenching temperature:
820-840 (DEG C) soaking times: 1-2h cooling medium: oil；Lonneal: heating temperature: 150-180 (DEG C) soaking times:
The 2-5h type of cooling: air-cooled；
S7；Grinding, trimming, burr obtain molding clip ontology 9.
The seal washer 4, upper seal 10, lower seal 11, upper fixed seal ring 16, lower fixed seal ring 17 use
Material be polyurethanes.
Preferably, the tube body 1 that oils is identical as the structure of lower oil pipe ontology 6, and the connection sleeve 14 is equipped with interior
Screw thread is threadedly coupled with external thread section 8 and forms phosphatization coating, the thickness of phosphatization coating in threaded connection section surface granosealing
Degree is not less than 15 μm.
Be equipped on the upper interconnecting piece 13 and lower interconnecting piece 15 screw thread and with tube body 1 and the lower oil pipe ontology 6 of oiling
The internal screw thread that inside is equipped with is correspondingly arranged and to be threadedly coupled, the junction of the upper interconnecting piece 13 and the tube body 1 that oils, institute
It states and passes through surface granosealing formation phosphatization coating, phosphatization coating under lower interconnecting piece 15 at the connection section surface of oil pipe ontology 6
Thickness be not less than 15 μm.
The upper connecting hole 3, lower connecting hole 7 are threaded hole and are correspondingly arranged with connecting hole 12 that the upper connecting hole 3 is logical
It crosses under bolt and is sequentially connected connecting hole 7, connecting hole 12.
The upper flange plate sleeve 2, lower flange sleeve 5 are welded on the outside of oil tube body 1 and lower oil pipe ontology 6.
The tube body 1 that oils, the outside of lower oil pipe ontology 6 and upper interconnecting piece 13, lower interconnecting piece 15 are connectivity structure.
Fixed sealing ring 16,17 founding fixed form of lower fixed seal ring use outside by heating connection sleeve 14
Portion by fixed seal ring 16,17 founding of lower fixed seal ring to connection sleeve 14 and upper interconnecting piece 13, lower interconnecting piece 15 connection
Place.
The upper flange plate sleeve 2, lower flange sleeve 5 and the fit system for connecting sleeve 14 are clearance fit.
Workflow of the present invention: upper seal 10 and lower seal 11 are respectively put into upper flange plate set when being attached
2, the junctions of lower flange sleeve 5 and clip ontology 9 corresponding with the junction of clip ontology 9 of cylinder, while by upper fixing seal
Circle 16, lower fixed seal ring 17 are respectively put into connection sleeve 14 corresponding with the junction of upper interconnecting piece 13, lower interconnecting piece 15 and company
The junction of female connector cylinder 14 is correspondingly provided with lower fixed seal ring 17, with tool knob clip ontology 9, makes clip ontology 9, on it is upper
The external thread section 8 of female connector cylinder 14 and the tube body 1 that oils in succession while interconnecting piece 13 connects with the screw thread inside tube body 1 that oils,
Then rotating lower oil pipe ontology 6 by tool makes the inside of lower oil pipe ontology 6 and external thread section 8 and lower interconnecting piece 15, connect
Sleeve 14 connects, and is connected outside sleeve 14 by heating by fixed seal ring 16,17 founding of lower fixed seal ring to connection at this time
The junction of sleeve 14 and upper interconnecting piece 13, lower interconnecting piece 15 passes through finally by connecting hole 3 on bolt successively goes up method under bolt
The fixed upper connecting hole 3 opened up connects connecting hole 7, connecting hole on blue disk sleeve 2, lower flange sleeve 5 and seal washer 4
12, so that make to oil tube body 1, lower oil pipe ontology 6 are attached, the internal screw thread and external screw thread that this process connection sleeve 14 is equipped with
Section 8 is threadedly coupled and forms phosphatization coating in threaded connection section surface granosealing, and the thickness of phosphatization coating is not less than 15 μm,
And passes through surface granosealing at the connection section surface of the lower oil pipe ontology 6 of lower interconnecting piece 15 and form phosphatization coating, phosphatization plating
The thickness of layer is not less than 15 μm, so that its junction is had abrasion resistance and corrosion resistance, extends service life design clip
It ontology 9 and is bolted in upper flange plate sleeve 2 and lower flange sleeve 5, is threadedly coupled oil pipe three times, makes two
The connection structure of oil pipe is more stable, and to ensure that and can normally work, by passing through heating connection sleeve 14
Outside by fixed seal ring 16,17 founding of lower fixed seal ring to connection sleeve 14 and upper interconnecting piece 13, lower interconnecting piece 15 company
It connects place and upper flange plate sleeve 2, lower flange sleeve 5 and is equipped with upper seal 10, lower seal with 14 junction of sleeve is connect
11, keep its sealing effect better, avoids and be easy to appear crude oil leakage phenomenon in use process.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. the production method of a kind of oil pipe, box cupling and box cupling, including the tube body that oils (1), it is characterised in that: the upper oil pipe sheet
The bottom of body (1) is connected with upper flange plate sleeve (2), and uniformly card fixation offers connection on the upper flange plate sleeve (2)
Hole (3), the upper flange plate sleeve (2) are correspondingly provided with seal washer (4), the sealing far from the end face for the tube body (1) that oils
Washer (4) is correspondingly provided with lower flange sleeve (5) far from the end face of upper flange plate sleeve (2), and the lower flange sleeve (5) is remote
Lower oil pipe ontology (6) is connected on end face from seal washer (4), fixation offers lower company on the lower flange sleeve (5)
It connects hole (7), the lower oil pipe ontology (6) is through lower flange sleeve (5) and extends lower flange sleeve (5) inside, under described
It is fixed with external thread section (8) on oil pipe ontology (6) and inside ring flange sleeve (5), on the external thread section (8) simultaneously
And being internally connected with clip ontology (9) in upper flange plate sleeve (2) and lower flange sleeve (5), the upper flange plate sleeve
(2) it is correspondingly provided with upper seal (10) with the junction of clip ontology (9), the lower flange sleeve (5) and clip ontology (9)
Junction be correspondingly provided with lower seal (11), on the seal washer (4) uniformly fixation offer connecting hole (12), the card
Hoop ontology (9) includes that upper interconnecting piece (13), connection sleeve (14), lower interconnecting piece (15), upper fixed seal ring (16), lower fixation are close
Seal (17), connection sleeve (14) inner hub location are fixed with interconnecting piece (13), the connection sleeve (14) with
The junction of upper interconnecting piece (13) is correspondingly provided with fixed seal ring (16), and the other side of the inside of connection sleeve (14) is solid
Surely lower interconnecting piece (15) are equipped with, the lower interconnecting piece (15) is correspondingly provided with lower fixed seal ring with the junction for connecting sleeve (14)
(17)。
2. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the clip sheet
Steps are as follows for the production method of body (9):
S1；High-carbon-chromium bearing steel Gcr15SiMn is chosen for raw material and according to the Design of Screw Thread drawing inside oil pipe；
S2；Forging processing: high-carbon-chromium bearing steel Gcr15SiMn is processed into blank similar with clip ontology (9) shape；
S3；Annealing: it is being heated to 790-810 DEG C of heat preservation 2-6h in furnace, with 10-30 DEG C/h, is being cooled to 600 DEG C hereinafter, coming out of the stove
It is air-cooled；
S4；Turnery processing: the axis of turning and clip ontology (9) shape, and groove milling is carried out to the cylinder of connection sleeve (14) shape；
S5；Screw thread process: spiral shell is carried out according to the inner wall that the drawing of design first carries out groove milling to the cylinder of connection sleeve (14) shape
Line processing, in the screw thread process of the axis of clip ontology (9) shape；
S6；For high-carbon-chromium bearing steel Gcr15SiMn, heat treatment includes quenching and lonneal quenching temperature: 820-
840 (DEG C) soaking times: 1-2h, cooling medium: oil；Lonneal: heating temperature: 150-180 (DEG C) soaking times: 2-5h,
The type of cooling: air-cooled；
S7；Grinding, trimming, burr obtain molding clip ontology (9).
3. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the gasket
The material that circle (4), upper seal (10), lower seal (11), upper fixed seal ring (16), lower fixed seal ring (17) use for
Polyurethanes.
4. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper oil pipe
Ontology (1) is identical as the structure of lower oil pipe ontology (6), the internal screw thread and external thread section (8) spiral shell that connection sleeve (14) is equipped with
Line connects and forms phosphatization coating in threaded connection section surface granosealing, and the thickness of phosphatization coating is not less than 15 μm.
5. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper connection
Be equipped on portion (13) and lower interconnecting piece (15) screw thread and be equipped with inside the tube body that oils (1) and lower oil pipe ontology (6)
Internal screw thread is correspondingly arranged and to be threadedly coupled, the junction of the upper interconnecting piece (13) and tube body (1) that oils, the lower company
Pass through surface granosealing under socket part (15) at the connection section surface of oil pipe ontology (6) and forms phosphatization coating, phosphatization coating
Thickness is not less than 15 μm.
6. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper connection
Hole (3), lower connecting hole (7) are threaded hole and to be correspondingly arranged with connecting hole (12), the upper connecting hole (3) pass through under bolt according to
Secondary connection connecting hole (7), connecting hole (12).
7. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper flange
Disk sleeve (2), lower flange sleeve (5) are welded on the outside of the tube body that oils (1) Yu lower oil pipe ontology (6).
8. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper oil pipe
Ontology (1), the outside of lower oil pipe ontology (6) and upper interconnecting piece (13), lower interconnecting piece (15) are connectivity structure.
9. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: fixed
Sealing ring (16), lower fixed seal ring (17) founding fixed form use external by fixing seal by heating connection sleeve (14)
Enclose (16), lower fixed seal ring (17) founding to the junction of connection sleeve (14) and upper interconnecting piece (13), lower interconnecting piece (15).
10. the production method of a kind of oil pipe according to claim 1, box cupling and box cupling, it is characterised in that: the upper flange
Disk sleeve (2), lower flange sleeve (5) and the fit system for connecting sleeve (14) are clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000852.3A CN109488224B (en) | 2019-01-02 | 2019-01-02 | Method for manufacturing oil pipe, coupling and coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000852.3A CN109488224B (en) | 2019-01-02 | 2019-01-02 | Method for manufacturing oil pipe, coupling and coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488224A true CN109488224A (en) | 2019-03-19 |
| CN109488224B CN109488224B (en) | 2020-07-07 |
Family
ID=65712209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910000852.3A Active CN109488224B (en) | 2019-01-02 | 2019-01-02 | Method for manufacturing oil pipe, coupling and coupling |
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| Country | Link |
|---|---|
| CN (1) | CN109488224B (en) |
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| CN110578479A (en) * | 2019-08-26 | 2019-12-17 | 李旭东 | Novel flange type oil pipe nipple for oil field |
| CN111853383A (en) * | 2020-06-23 | 2020-10-30 | 肖云东 | Flat tubing thickening coupling |
| CN112127801A (en) * | 2020-09-28 | 2020-12-25 | 张军 | Oil pipe for oil field downhole operation |
| CN112780194A (en) * | 2020-12-31 | 2021-05-11 | 中油国家油气钻井装备工程技术研究中心有限公司 | Ocean riser commonality conversion equipment |
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| CN110578479A (en) * | 2019-08-26 | 2019-12-17 | 李旭东 | Novel flange type oil pipe nipple for oil field |
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| CN113107385A (en) * | 2021-05-06 | 2021-07-13 | 大庆市龙兴石油机械有限公司 | Tubing coupling |
| CN115059408A (en) * | 2022-06-15 | 2022-09-16 | 大庆市龙兴石油机械有限公司 | Multi-element co-permeation tubing coupling |
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