CN105221081A - A kind of elastic packing helicitic texture - Google Patents
A kind of elastic packing helicitic texture Download PDFInfo
- Publication number
- CN105221081A CN105221081A CN201510720918.8A CN201510720918A CN105221081A CN 105221081 A CN105221081 A CN 105221081A CN 201510720918 A CN201510720918 A CN 201510720918A CN 105221081 A CN105221081 A CN 105221081A
- Authority
- CN
- China
- Prior art keywords
- oil well
- groove
- well pipe
- primary seal
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Gasket Seals (AREA)
- 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, comprises the factory's end oil well pipe and on-the-spot end oil well pipe that are connected by box cupling; Its 5-150mm place, distance center line both sides of box cupling is provided with sealed groove; Factory's its end face of end oil well pipe is provided with primary seal groove; The wide 1-5mm of its primary seal groove, dark 1-10mm, be provided with main seal ring in its primary seal groove; On-the-spot its end face of end oil well pipe is provided with primary seal groove, and primary seal groove is two stage conical structure, the wide 1-5mm of end face, first order tapering 1-10 degree, long 1-10mm; Second level tapering 10-60 degree, long 1-10mm.Present invention reduces difficulty of processing, reduce cost.
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 large proportion, therefore, reasonably selects tubing and casing to seem particularly important.And the difference of the difference of tubing and casing mainly thread forms, can say that selecting of tubing and casing is the selecting of pattern of being threaded in fact.Screw type at present both at home and abroad selected by oil gas field has two classes: a class is API screw thread, namely by the screw thread that American Petroleum Institute (API) (API) standard manufactures; API screw thread gas sealing ability is poor.Gas well development requirement cannot be met.Another kind of is non-API screw thread, also claims special thread or high-quality screw thread (PremiumConnections).Special threading connector is for the deficiency of API joint, and with the structure design of its uniqueness, accurate processing technology, achieve the unapproachable performance of API joint, the scope of application constantly expands.Special threading connector belongs to the high-end product of tubing and casing product scope, and lot of domestic and international company all have developed Special threading connector.Domestic have species abundance in Baosteel in Shanghai, Tianjin Steel Pipe Corp., Wuxi Lyceum Lay this etc. the Special threading connector of producer.Special threading connector ubiquity processing difficulties, on the high side.
Therefore, the basis of API screw thread is improved its sealing performance to substitute the special thread used in the exploitation of current gas well, so not only can reduce tubing and casing use cost, use to oil field and bring convenience.
Summary of the invention
The present invention is intended to propose a kind of based on common API screw thread, to improve its sealing performance thus can substitute the elastic packing helicitic texture of Special threading connector.
Technical program of the present invention lies in:
A kind of elastic packing helicitic texture, comprises the factory's end oil well pipe and on-the-spot end oil well pipe that are connected by box cupling; Its 5-150mm place, distance center line both sides of box cupling is provided with sealed groove; Factory's its end face of end oil well pipe is provided with primary seal groove; The wide 1-5mm of its primary seal groove, dark 1-10mm, be provided with main seal ring in its primary seal groove; On-the-spot its end face of end oil well pipe is provided with primary seal groove, and primary seal groove is two stage conical structure, the wide 1-5mm of end face, first order tapering 1-10 degree, long 1-10mm; Second level tapering 10-60 degree, long 1-10mm.
Described its distance end face 3-150mm place of factory's end oil well pipe is provided with secondary sealed groove; Its distance end face 3-150mm place of on-the-spot end oil well pipe is provided with secondary sealed groove; The wide 0.5-5mm of its secondary sealed groove, dark 0.5-5mm.
Described sealed groove and secondary sealed groove are equipped with secondary joint ring, and it is loop configuration, and its size is mated with the size of sealed groove and secondary sealed groove.
Described main seal ring and secondary joint ring are the elastomeric material that the weather-proof rubber of unicity elastomeric material, polytetrafluoroethylene (PTFE) or outside are rubber or polytetrafluoroethylene (PTFE).
Described main seal ring surface is provided with solid lubrication layer, and this solid lubricant coating is the solid lubricant coating containing Graphene, can contain the coating of molybdenum disulfide powder, polytetrafluorethylepowder powder, powdered graphite simultaneously.
Technique effect of the present invention is:
Two parts are combined by the main seal ring on the primary seal groove on factory's end oil well pipe and on-the-spot end oil well pipe by the present invention on the basis of API screw thread, ensure tightness; Preferably, on box cupling and factory's end oil well pipe, rich sealed groove is provided with on on-the-spot end oil well pipe secondary joint ring more improve tightness, present invention reduces difficulty of processing, reduce cost.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present invention.
Fig. 2 is box cupling schematic diagram of the present invention.
Fig. 3 is factory of the present invention end oil well pipe schematic diagram.
Fig. 4 is the present invention scene end oil well pipe schematic diagram.
Fig. 5 is main seal ring schematic diagram of the present invention.
Fig. 6 is the secondary joint ring schematic diagram of the present invention.
Wherein, 1-box cupling, 2-factory end oil well pipe, 3-scene end oil well pipe, 4-primary seal groove, the secondary sealed groove of 5-, 6-main seal ring, the secondary joint ring of 7-, 8-sealed groove.
Detailed description of the invention
Embodiment one:
Connecting thread structure is J55 grade of steel external diameter 73.02mm oil pipe and box cupling 1, wall thickness 5.51mm, and screw thread is API buttress thread.Box cupling 1 inside thread is API buttress thread, starts to leave three place's sealed groove 8, spacing 2mm, diameter 1mm circular arc type grooves apart from 10mm place, box cupling 1 center line both sides;
Factory's end oil well pipe 2 screw thread end face is provided with primary seal groove 4-1, wide 1mm, dark 2mm, and distance end face 10mm place starts outside and leaves the secondary sealed groove 5-1 in three places, spacing 2mm, wide 1mm, dark 1mm; On-the-spot end oil well pipe 3 screw thread end face is provided with primary seal groove 4-2, it is two stage conical structure, the wide 1mm of end face, first order tapering are 5 degree, long 1mm, second level tapering is 30 degree, long 1mm, from distance end face 10mm place, the secondary sealed groove 5-2 in three places is left in outside, spacing 2mm, the wide 1mm of groove, dark 1mm.
Be connected by main seal ring 6 between primary seal groove 4-1 with primary seal groove 4-2; Main seal ring 6 is loop configuration, and sectional dimension is bottom face width 1mm, first order tapering is 5 degree, long 1mm, and second level tapering is for being 30 degree, long 1mm.Its material is polytetrafluoroethylene (PTFE), is fixed in primary seal groove 4-1 by fluid sealant.Conical section surface scribbles solid lubricant coating, and lubricant coating is the solid lubricant coating containing Graphene, can contain the epoxy coating of molybdenum bisuphide, graphite, polytetrafluorethylepowder powder simultaneously.Primary seal groove 4-1 coordinates with primary seal groove 4-2 by main seal ring 6, even if guarantee oil well pipe place in a stretched state, also can guarantee gas sealing ability.
Be provided with secondary joint ring 7 in sealed groove 8 and secondary sealed groove 5, secondary joint ring 7 is loop configuration, and sectional dimension is the long 1mm in bottom, wide 1mm, and top is the semicircle of diameter 1mm.Material is that polytetrafluoroethylene (PTFE) is fixed by fluid sealant.Semi-circular portion surface scribbles solid lubricant coating, and lubricant coating is the solid lubricant coating containing Graphene, can contain the epoxy coating of molybdenum bisuphide, graphite, polytetrafluorethylepowder powder simultaneously.By secondary joint ring 7 just primary seal groove 4-1 coordinate with primary seal groove 4-2, guarantee that oil well pipe is under different stress, also can guarantee gas sealing ability.
Embodiment two:
Connecting thread structure is N80 grade of steel external diameter 244.48mm oil pipe and box cupling 1, wall thickness 8.94mm, and screw thread is API round thread.Box cupling 1 inside thread is API round thread, starts to leave three place's sealed grooves, spacing 5mm, diameter 2mm circular arc type groove apart from 15mm place, box cupling 1 center line both sides;
Factory's end oil well pipe 2 screw thread end face is provided with primary seal groove 4-1, wide 2mm, dark 3mm, and distance end face 15mm place starts outside and leaves the secondary sealed groove 5-1 in three places, spacing 3mm, the wide 2mm of groove, dark 2mm; On-the-spot end oil well pipe 3 screw thread end face is provided with primary seal groove 4-2, it is two stage conical structure, the wide 1mm of end face, first order tapering are 5 degree, long 1mm, second level tapering is 20 degree, long 1mm, from distance end face 15mm place, the secondary sealed groove 5-2 in three places is left in outside, spacing 3mm, the wide 2mm of groove, dark 2mm.
Be connected by main seal ring 6 between primary seal groove 4-1 with primary seal groove 4-2; Main seal ring 6 is loop configuration, and sectional dimension is bottom face width 2mm, first order tapering is 5 degree, long 1mm, and second level tapering is for being 20 degree, long 1mm.Its material is polytetrafluoroethylene (PTFE), is fixed in primary seal groove 4-1 by fluid sealant.Conical section surface scribbles solid lubricant coating, and lubricant coating is the epoxy coating of oil-containing molybdenum bisuphide, graphite, polytetrafluorethylepowder powder.Primary seal groove 4-1 coordinates with primary seal groove 4-2 by main seal ring 6, even if guarantee oil well pipe place in a stretched state, also can guarantee gas sealing ability.
Be provided with secondary joint ring 7 in sealed groove 8 and secondary sealed groove 5, secondary joint ring 7 is loop configuration, and sectional dimension is the long 2mm in bottom, wide 2mm, and top is the semicircle of diameter 2mm.Material is that polytetrafluoroethylene (PTFE) is by fluid sealant fixed groove.Semi-circular portion surface scribbles solid lubricant coating, and lubricant coating is the solid lubricant coating containing Graphene, can contain the epoxy coating of molybdenum bisuphide, graphite, polytetrafluorethylepowder powder simultaneously.By secondary joint ring 7 just primary seal groove 4-1 coordinate with primary seal groove 4-2, guarantee that oil well pipe is under different stress, also can guarantee gas sealing ability.
Claims (5)
1. an elastic packing helicitic texture, comprises factory's end oil well pipe (2) and on-the-spot end oil well pipe (3) that are connected by box cupling (1); It is characterized in that: its 5-150mm place, distance center line both sides of box cupling (1) is provided with sealed groove (8); Factory's end oil well pipe (2) its end face is provided with primary seal groove (4-1); Its primary seal groove (4-1) wide 1-5mm, dark 1-10mm, be provided with main seal ring (6) in its primary seal groove (4-1); On-the-spot end oil well pipe (3) its end face is provided with primary seal groove (4-2), and primary seal groove (4-2) is two stage conical structure, the wide 1-5mm of end face, first order tapering 1-10 degree, long 1-10mm; Second level tapering 10-60 degree, long 1-10mm.
2. a kind of elastic packing helicitic texture as claimed in claim 1, is characterized in that: its distance end face 3-150mm place of described factory's end oil well pipe (2) is provided with secondary sealed groove (5-1); Its distance end face 3-150mm place of on-the-spot end oil well pipe (3) is provided with secondary sealed groove (5-2); Its secondary sealed groove (5-2) wide 0.5-5mm, dark 0.5-5mm.
3. a kind of elastic packing helicitic texture as claimed in claim 2, it is characterized in that: described sealed groove (8), in be provided with secondary sealed groove (5-1) and secondary sealed groove (5-2) is equipped with secondary joint ring (7), it is loop configuration, its size and sealed groove (8), in be provided with secondary sealed groove (5-1) and secondary sealed groove (5-2) size mate.
4. a kind of elastic packing helicitic texture as claimed in claim 2, is characterized in that: described main seal ring (6) and secondary joint ring (7) are the elastomeric material that the weather-proof rubber of unicity elastomeric material, polytetrafluoroethylene (PTFE) or outside are rubber or polytetrafluoroethylene (PTFE).
5. a kind of elastic packing helicitic texture as claimed in claim 2, is characterized in that: described main seal ring (6) surface scribbles 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 true CN105221081A (en) | 2016-01-06 |
| CN105221081B CN105221081B (en) | 2017-08-01 |
Family
ID=54990305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510720918.8A Active CN105221081B (en) | 2015-10-30 | 2015-10-30 | A kind of elastic packing helicitic texture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105221081B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109561786A (en) * | 2016-08-04 | 2019-04-02 | 德隆吉器具有限公司 | Syringe unit 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 |
| CN115709159A (en) * | 2022-12-02 | 2023-02-24 | 陕西延长石油（集团）有限责任公司 | Preparation method of high-performance thread for oil and gas fields |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020033603A1 (en) * | 2000-09-15 | 2002-03-21 | Pallini Joseph W. | Threaded connector |
| 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 |
-
2015
- 2015-10-30 CN CN201510720918.8A patent/CN105221081B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020033603A1 (en) * | 2000-09-15 | 2002-03-21 | Pallini Joseph W. | Threaded connector |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109561786A (en) * | 2016-08-04 | 2019-04-02 | 德隆吉器具有限公司 | Syringe unit 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 |
| CN115709159A (en) * | 2022-12-02 | 2023-02-24 | 陕西延长石油（集团）有限责任公司 | Preparation method of high-performance thread for oil and gas fields |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105221081B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY158296A (en) | An improved seal between pipes | |
| CN105221081A (en) | A kind of elastic packing helicitic texture | |
| EA201390721A1 (en) | IMPROVED SEAL BETWEEN PIPES | |
| WO2014006866A1 (en) | Threaded pipe joint | |
| CN201874485U (en) | Metal sealed casing threaded connecting structure based on API (American Petroleum Institute) standard round threads | |
| CN204226915U (en) | A kind of rapid pipe joint | |
| CN202531080U (en) | Wellhead sealing hanger | |
| CN205191031U (en) | Petroleum transportation pipeline dedicated connection head | |
| CN103016864B (en) | leak-proof oil pipe joint | |
| JP2013029176A (en) | Steel pipe screw joint | |
| CN102996079A (en) | Tubular air sealing screwed joint and application thereof | |
| CN203431368U (en) | Easily disassembled and assembled pipeline joint | |
| CN202673173U (en) | Double-shoulder gas-sealing threaded joint for casing tube with tube outer diameter of 200.03mm | |
| CN205191067U (en) | Petroleum transportation pipe connection head | |
| CN204512732U (en) | The connecting head structure of new tube joint | |
| CN203431371U (en) | Easily disassembled and assembled pipeline joint | |
| CN203129973U (en) | Small-dimension drill stem | |
| CN202645463U (en) | Thread gluing resistant two-stage gas seal screwed joint | |
| CN207315787U (en) | A kind of joint design of flareless turn of flaring | |
| CN207539474U (en) | A kind of oil extraction pipeline sealing device | |
| CN202039789U (en) | Oil casing pipe joint capable of being exchanged with American Petroleum Institute (API) joint | |
| CN202689961U (en) | High-sealing-performance threaded connection structure of oil well pipe | |
| CN203742474U (en) | Oil well pipe and coupling with right-angle threads | |
| CN202108427U (en) | Hermetic seal sleeve pipe screwed joint with pipe external diameter 200.03mm | |
| CN203215147U (en) | Automobile pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |