CN105221081B - A kind of elastic packing helicitic texture - Google Patents
A kind of elastic packing helicitic texture Download PDFInfo
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- CN105221081B CN105221081B CN201510720918.8A CN201510720918A CN105221081B CN 105221081 B CN105221081 B CN 105221081B CN 201510720918 A CN201510720918 A CN 201510720918A CN 105221081 B CN105221081 B CN 105221081B
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- factory
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- secondary sealing
- oil well
- primary seal
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The present invention relates to a kind of elastic packing nipple.A kind of elastic packing helicitic texture, including the factory's end oil well pipe and live end oil well pipe connected by box cupling；Sealed groove is provided with the 150mm of its distance center line both sides 5 of box cupling；Its end face of factory's end oil well pipe is provided with factory's end primary seal groove；Main seal ring is provided with wide 1 5mm of factory's end primary seal groove, deep 1 10mm, primary seal groove；Live its end face of end oil well pipe is provided with live end primary seal groove, and live end primary seal groove is two stage conical structure, wide 1 5mm of end face, 1 10 degree of first order taper, long 1 10mm；10 60 degree of second level taper, long 1 10mm.Present invention reduces difficulty of processing, cost is reduced.
Description
Technical field
The present invention relates to a kind of elastic packing nipple.
Background technology
In oil-gas field development, the investment of sleeve pipe and oil pipe accounts for very big proportion, therefore, rational to seem outstanding from tubing and casing
To be important.And the difference of tubing and casing is mainly the difference of thread forms, it may be said that the selection of tubing and casing is threaded connection type in fact
The selection of formula.The screw type both at home and abroad selected by oil gas field has two classes at present：One class is API screw threads, i.e., by american petroleum
The screw thread of meeting (API) standard manufacture；API screw thread gas sealing abilities are poor.Gas well exploitation demand can not be met.Another kind of is non-API
Screw thread, also referred to as special thread or high-quality screw thread (Premium Connections).Special threading connector is directed to API joints not
Foot, with its unique structure design, accurate processing technology realizes API joints institute unapproachable performance, the scope of application
Constantly expand.Special threading connector belongs to the high-end product of tubing and casing product scope, and it is special that lot of domestic and international company all have developed
Nipple.It is domestic have species abundance in Baosteel in Shanghai, Tianjin Steel Pipe Corp., Wuxi Lyceum Lay this etc. producer Special threading connector.It is special
It is nipple generally existing processing difficulties, on the high side.
Therefore, its sealing property is improved on the basis of API screw threads to substitute the special spiral shell used in current gas well exploitation
Line, so can not only reduce tubing and casing use cost, to oil field using bringing convenience.
The content of the invention
The present invention is directed to propose a kind of be based on common API screw threads, to improve its sealing property so as to substituting special spiral shell
The elastic packing helicitic texture of line joint.
Technical program of the present invention lies in：
A kind of elastic packing helicitic texture, including the factory's end oil well pipe and live end oil well pipe connected by box cupling；
Sealed groove is provided with its distance center line of box cupling both sides 5-150mm；Its end face of factory's end oil well pipe is provided with factory's end primary seal
Groove；Main seal ring is provided with the factory end wide 1-5mm of primary seal groove, deep 1-10mm, factory's end primary seal groove；Live end oil
Well casing its end face is provided with live end primary seal groove, and live end primary seal groove is two stage conical structure, the wide 1-5mm of end face, the
One-level taper 1-10 degree, long 1-10mm；Second level taper 10-60 degree, long 1-10mm.
Described factory's end oil well pipe its at end face 3-150mm be provided with factory's end secondary sealing groove；Live end oil well
It is managed at end face 3-150mm provided with live end secondary sealing groove；The live wide 0.5-5mm of end secondary sealing groove, deep 0.5-
5mm。
Described sealed groove, factory's end secondary sealing groove and live end secondary sealing groove is equipped with secondary sealing ring, its
For loop configuration, its size is matched with the size of sealed groove, factory's end secondary sealing groove and live end secondary sealing groove.
Described main seal ring and the material of secondary sealing ring be the weather-proof rubber of unicity elastomeric material, polytetrafluoroethylene (PTFE),
Outside is rubber or the elastomeric material of polytetrafluoroethylene (PTFE).
Described main seal ring surface scribbles the solid lubricant coating containing graphene, and the solid lubricant coating is to contain stone
The solid lubricant coating of black alkene, can simultaneously containing molybdenum disulfide powder, polytetrafluorethylepowder powder, powdered graphite coating.
The technical effects of the invention are that：
The present invention passes through the primary seal groove on factory's end oil well pipe and live end oil well pipe on the basis of API screw threads
On main seal ring two parts are combined, it is ensured that air-tightness；Preferably, on box cupling and factory's end oil well pipe, live end
The secondary sealing ring that rich sealed groove is provided with oil well pipe more improves air-tightness, and present invention reduces difficulty of processing, reduction
Cost.
Brief description of the drawings
Fig. 1 is connection diagram of the present invention.
Fig. 2 is box cupling schematic diagram of the present invention.
Fig. 3 is factory end oil well pipe schematic diagram of the present invention.
Fig. 4 is the live end oil well pipe schematic diagram of the present invention.
Fig. 5 is main seal ring schematic diagram of the present invention.
Fig. 6 is secondary sealing ring schematic diagram of the present invention.
Wherein, 1- box cuplings, 2- factories end oil well pipe, 3- scenes end oil well pipe, 4-1- factories end primary seal groove, 4-2- is existing
Field end primary seal groove, 5-1- factories end secondary sealing groove, 5-2- scenes end secondary sealing groove, 6- main seal rings, 7- secondary sealings
Ring, 8- sealed grooves.
Embodiment
Embodiment one：
Connection screw thread structure is J55 grade of steels external diameter 73.02mm oil pipes and box cupling 1, and wall thickness 5.51mm, screw thread is that API is partially terraced
Shape screw thread.The inside thread of box cupling 1 is API buttress threads, seals recessed at three away from starting to leave at the center line both sides 10mm of box cupling 1
Groove 8, spacing 2mm, diameter 1mm circular arc type grooves.
The screw thread end face of factory's end oil well pipe 2 is provided with factory end primary seal groove 4-1, wide 1mm, depth 2mm, apart from end face 10mm
Place starts outside and leaves secondary sealing groove 5-1 in factory end at three, spacing 2mm, wide 1mm, deep 1mm；The live screw thread of end oil well pipe 3
End face is provided with scene end primary seal groove 4-2, and it is two stage conical structure, and the wide 1mm of end face, first order taper are 5 degree, long 1mm,
Second level taper is 30 degree, long 1mm, and scene end secondary sealing groove 5-2 at three is left in outside since at end face 10mm,
Away from 2mm, groove wide 1mm, deep 1mm.
Connected between factory end primary seal groove 4-1 and scene end primary seal groove 4-2 by main seal ring 6；Primary seal
Ring 6 is loop configuration, and sectional dimension is that the wide 1mm of bottom face, first order taper are 5 degree, and long 1mm, second level taper is 30 degree, is grown
1mm.Its material is polytetrafluoroethylene (PTFE), is fixed on by fluid sealant in factory end primary seal groove 4-1.Conical section surface is scribbled
Solid lubricant coating, lubricant coating is the solid lubricant coating containing graphene, and molybdenum disulfide, graphite, poly- four can be contained simultaneously
The epoxy coating of PVF powder.Main seal ring 6 coordinates factory end primary seal groove 4-1 and scene end primary seal groove 4-2,
Ensure that oil well pipe, even under extended state, also ensures that gas sealing ability.
Secondary sealing ring 7 is provided with sealed groove 8, factory end secondary sealing groove 5-1 and scene end secondary sealing groove 5-2,
Secondary sealing ring 7 is loop configuration, and sectional dimension is the long 1mm in bottom, width 1mm, and top is diameter 1mm semicircle.Material is poly-
Tetrafluoroethene, is fixed by fluid sealant.Semi-circular portion surface scribbles solid lubricant coating, and lubricant coating is to contain graphene
Solid lubricant coating, can simultaneously containing molybdenum disulfide, graphite, polytetrafluorethylepowder powder epoxy coating.Will by secondary sealing ring 7
By factory end primary seal groove 4-1 and scene end primary seal groove 4-2 cooperation, it is ensured that oil well pipe under different stresses,
It can ensure that gas sealing ability.
Embodiment two：
Connection screw thread structure is N80 grade of steels external diameter 244.48mm oil pipes and box cupling 1, and wall thickness 8.94mm, screw thread is that API justifies spiral shell
Line.The inside thread of box cupling 1 is API round threads, away from starting to leave sealed groove at three, spacing at the center line both sides 15mm of box cupling 1
5mm, diameter 2mm circular arc type grooves.
The screw thread end face of factory's end oil well pipe 2 is provided with factory end primary seal groove 4-1, wide 2mm, depth 3mm, apart from end face 15mm
Place starts outside and leaves secondary sealing groove 5-1 in factory end at three, spacing 3mm, groove wide 2mm, deep 2mm；The live spiral shell of end oil well pipe 3
Line end face is provided with scene end primary seal groove 4-2, and it is two stage conical structure, and the wide 1mm of end face, first order taper are 5 degree, long
1mm, second level taper is 20 degree, long 1mm, and scene end secondary sealing groove 5- at three is left in outside since at end face 15mm
2, spacing 3mm, groove wide 2mm, deep 2mm.
Connected between factory end primary seal groove 4-1 and scene end primary seal groove 4-2 by main seal ring 6；Primary seal
Ring 6 is loop configuration, and sectional dimension is that the wide 2mm of bottom face, first order taper are 5 degree, and long 1mm, second level taper is 20 degree, is grown
1mm.Its material is polytetrafluoroethylene (PTFE), is fixed on by fluid sealant in factory end primary seal groove 4-1.Conical section surface is scribbled
Solid lubricant coating, lubricant coating is oil-containing molybdenum disulfide, graphite, the epoxy coating of polytetrafluorethylepowder powder.Main seal ring 6 will
Factory end primary seal groove 4-1 and scene end primary seal groove 4-2 cooperation, it is ensured that oil well pipe even under extended state,
It can ensure that gas sealing ability.
Secondary sealing ring 7 is provided with sealed groove 8, factory end secondary sealing groove 5-1 and scene end secondary sealing groove 5-2,
Secondary sealing ring 7 is loop configuration, and sectional dimension is the long 2mm in bottom, width 2mm, and top is diameter 2mm semicircle.Material is poly-
Tetrafluoroethene passes through in fluid sealant fixed groove.Semi-circular portion surface scribbles solid lubricant coating, and lubricant coating is to contain stone
The solid lubricant coating of black alkene, can simultaneously containing molybdenum disulfide, graphite, polytetrafluorethylepowder powder epoxy coating.It is close by pair
Seal ring 7 will coordinate factory end primary seal groove 4-1 and scene end primary seal groove 4-2, it is ensured that oil well pipe is in different stress shapes
Under state, gas sealing ability is also ensured that.
Claims (5)
1. a kind of elastic packing helicitic texture, including pass through box cupling（1）Factory's end oil well pipe of connection（2）And live end oil well
Pipe（3）；It is characterized in that：Box cupling（1）Sealed groove is provided with its distance center line both sides 5-150mm（8）；Factory's end oil well pipe
（2）Its end face is provided with factory's end primary seal groove（4-1）；Factory's end primary seal groove（4-1）Wide 1-5mm, deep 1-10mm, factory
Hold primary seal groove（4-1）It is interior to be provided with main seal ring（6）；Live end oil well pipe（3）Its end face is provided with live end primary seal groove
（4-2）, live end primary seal groove（4-2）For two stage conical structure, the wide 1-5mm of end face, first order taper 1-10 degree, long 1-
10mm；Second level taper 10-60 degree, long 1-10mm.
2. a kind of elastic packing helicitic texture as claimed in claim 1, it is characterised in that：Described factory's end oil well pipe（2）
It is provided with factory's end secondary sealing groove at end face 3-150mm（5-1）；Live end oil well pipe（3）It is apart from end face 3-150mm
Place is provided with live end secondary sealing groove（5-2）；Live end secondary sealing groove（5-2）Wide 0.5-5mm, deep 0.5-5mm.
3. a kind of elastic packing helicitic texture as claimed in claim 2, it is characterised in that：Described sealed groove（8）, factory
Hold secondary sealing groove（5-1）And live end secondary sealing groove（5-2）It is equipped with secondary sealing ring（7）, it is loop configuration, its chi
Very little and sealed groove（8）, factory's end secondary sealing groove（5-1）And live end secondary sealing groove（5-2）Size matching.
4. a kind of elastic packing helicitic texture as claimed in claim 3, it is characterised in that：Described main seal ring（6）And
Secondary sealing ring（7）Material be that the weather-proof rubber of unicity elastomeric material, polytetrafluoroethylene (PTFE), outside are rubber or polytetrafluoroethylene (PTFE)
Elastomeric material.
5. a kind of elastic packing helicitic texture as claimed in claim 2, it is characterised in that：Described main seal ring（6）Surface
Scribble the solid lubricant coating containing graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510720918.8A CN105221081B (en) | 2015-10-30 | 2015-10-30 | A kind of elastic packing helicitic texture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510720918.8A CN105221081B (en) | 2015-10-30 | 2015-10-30 | A kind of elastic packing helicitic texture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105221081A CN105221081A (en) | 2016-01-06 |
| CN105221081B true CN105221081B (en) | 2017-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510720918.8A Active CN105221081B (en) | 2015-10-30 | 2015-10-30 | A kind of elastic packing helicitic texture |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600082419A1 (en) * | 2016-08-04 | 2018-02-04 | De Longhi Appliances Srl | INFUSION GROUP FOR COFFEE MACHINE |
| CN113565448A (en) * | 2020-04-28 | 2021-10-29 | 宝山钢铁股份有限公司 | Elastic air sealing structure of lining composite oil well pipe |
| CN115709159B (en) * | 2022-12-02 | 2023-09-29 | 陕西延长石油（集团）有限责任公司 | Preparation method of high-performance screw thread for oil and gas field |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522610Y (en) * | 2002-01-08 | 2002-11-27 | 无锡西姆来斯石油专用管制造有限公司 | Oil well casing special nipple connecting piece |
| CN2665343Y (en) * | 2003-12-01 | 2004-12-22 | 陆晓玲 | Oil gas well specific screwed joint steel pipe |
| CN201056991Y (en) * | 2007-06-20 | 2008-05-07 | 中国海洋石油总公司 | Special screwed joint of petroleum sleeve pipe |
| CN203531776U (en) * | 2013-10-11 | 2014-04-09 | 杨林 | Economical torsion-resistant oil casing pipe screwed joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478344B2 (en) * | 2000-09-15 | 2002-11-12 | Abb Vetco Gray Inc. | Threaded connector |
-
2015
- 2015-10-30 CN CN201510720918.8A patent/CN105221081B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522610Y (en) * | 2002-01-08 | 2002-11-27 | 无锡西姆来斯石油专用管制造有限公司 | Oil well casing special nipple connecting piece |
| CN2665343Y (en) * | 2003-12-01 | 2004-12-22 | 陆晓玲 | Oil gas well specific screwed joint steel pipe |
| CN201056991Y (en) * | 2007-06-20 | 2008-05-07 | 中国海洋石油总公司 | Special screwed joint of petroleum sleeve pipe |
| CN203531776U (en) * | 2013-10-11 | 2014-04-09 | 杨林 | Economical torsion-resistant oil casing pipe screwed joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105221081A (en) | 2016-01-06 |
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