CN102162340A - Using method for connection structure of high-airtight seal buttress thread casing pipe - Google Patents
Using method for connection structure of high-airtight seal buttress thread casing pipe Download PDFInfo
- Publication number
- CN102162340A CN102162340A CN2011100373041A CN201110037304A CN102162340A CN 102162340 A CN102162340 A CN 102162340A CN 2011100373041 A CN2011100373041 A CN 2011100373041A CN 201110037304 A CN201110037304 A CN 201110037304A CN 102162340 A CN102162340 A CN 102162340A
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- factory
- box cupling
- end sleeve
- oil field
- 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.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a using method for a connection structure of a high-airtight seal buttress thread casing pipe. When the using method is used, the connection by the connection structure with a patent number ZL96106583.4 of high-airtight seal buttress thread casing pipe is reliable, connection strength among a casing pipe at the oil field end, a casing pipe at the factory end and a collar is ensured, and a contact end face of the casing pipe at the oil field end and the casing pipe at the factory end form end face interference seal to meet using requirements. A torsion value required by the end face interference seal formed between the casing pipe at the oil field end and the casing pipe at the factory end is measured in advance by a test; and when the casing pipe at the oil field end is screwed to be buckled, as long as the casing pipe at the factory end and the collar are fixed synchronously and the screw torsion of the casing pipe at the oil field end reaches a torsion standard value, the casing pipe at the oil field end and the casing pipe at the factory end form the end face interference seal by collar connection and looseness between the casing pipe at the factory end and the collar can be prevented effectively.
Description
[technical field]
The present invention relates to the casing threads syndeton of a kind of oil, natural gas exploitation drilling well use, relate in particular to the syndeton of high-airtight buttress thread sleeve pipe.
[background technology]
In oil, natural gas exploitation drilling well, must use the thimble joint part of high strength, high-air-tightness, the Hou Yi of Tianjin discloses a kind of " high-airtight buttress thread casing-pipe connection structure " in ZL96106583.4, the sleeve pipe two ends are shaped on the trapezoidal partially outer spiral shell of taper, the box cupling two ends are shaped on the inclined to one side trapezoidal internal thread of taper, at sleeve pipe two ends wall thickness end face is arc-shaped curved surface, two sleeve pipes have axial interference " △ " after being connected by box cupling, two sleeve pipe pipe ends compress mutually, tube wall axially produces weak property plastic strain, forms the sealing surface of metal to metal.This patent also discloses its three kinds and has optimized structure, be the inclined to one side trapezoidal internal thread at box cupling two ends in vicinity in every side to have at least the tooth of two teeth to be wider than normal tooth wide, the wide difference of the wide and orthodont tooth of the tooth of wide tooth is connected rear thread thread form side clearance amount less than sleeve pipe; The radius of curvature of sleeve pipe both ends arc-shaped curved surface wall thickness end face can be identical also can be different, the axial interference " △ " that casing threads connects is 0.1～2.0 millimeter; For the ease of oil field end sleeve pipe fastening, tighten end in the oil field of box cupling and be provided with the normal line that links closely, on the end sleeve pipe of oil field, be provided with the mark line that links closely.The existing buttress thread of the syndeton of this high-airtight buttress thread sleeve pipe connects can abundant sharp screw thread the spiral shell tail be threaded do not weaken body wall thickness, bonding strength and body quite, not thread gluing, be difficult for advantage such as slippage when being subjected to tension, box cupling female thread portion tooth is wide to reduce the form of thread side clearance amount after the connection by increasing simultaneously, thereby the sealing performance of connection is further improved; Just, also applied in recent years because it has above-mentioned advantage.Yet following technical problem appears again in actual use:
First, be provided with normal line though tighten end in the oil field of box cupling, on the end sleeve pipe of oil field, be provided with mark line, but in actual use, need frequent dismounting between oil field end sleeve pipe and the box cupling, normal line and mark line are easy to be worn, on the other hand, the radius of curvature of the butt joint end face of factory end sleeve pipe and oil field end sleeve pipe is through after the dismounting repeatedly, must produce plastic strain, the axial interference " △ " that makes the casing threads of original design connect reduces gradually, if still judge both whether fastening puts in place to be very inaccurate with original normal line and mark line, even mark line and normal line conllinear, the butt joint end face of two sleeve pipes does not still reach seal request.
Second, in order to overcome above-mentioned defective, people adopt the way of twisting dead oil field end sleeve pipe to overcome usually may cause two box face blow-by defectives, but in screwing operating process, because it is the interference contact that oil field end sleeve pipe is held contacting between the end face of sleeve pipe with factory, when the end sleeve pipe of rotation oil field, can cause factory's end sleeve pipe counter-rotating, become flexible thereby make to produce between factory's end sleeve pipe and the box cupling, thereby reduced bonding strength, this is the defective of danger close, can cause oil pipe and box cupling to break away from when serious, consequence is hardly imaginable.
In order fundamentally to overcome above-mentioned defective, the applicant explores the correct using method of a cover in the long-term production practice, oil field end sleeve pipe holds the end face that docks of sleeve pipe to produce the sealed increscence amount of being scheduled to factory after guaranteeing each upward button, can guarantee the bonding strength between oil field end sleeve pipe, factory end sleeve pipe and the box cupling, can guarantee that again oil field end sleeve pipe and factory end sleeve pipe contacts the interference of end face generation end face and seal.
[summary of the invention]
The using method that the purpose of this invention is to provide high-airtight buttress thread casing-pipe connection structure, it can make the described high-airtight buttress thread casing-pipe connection structure of patent No. ZL96106583.4 connect more reliable, both guaranteed the bonding strength between oil field end sleeve pipe, factory's end sleeve pipe and the box cupling, can guarantee that again oil field end sleeve pipe and factory end sleeve pipe contact end face and produces the end face interference and seal, satisfy instructions for use.
The technical scheme that the present invention takes is:
The patent No. is that disclosed among the ZL96106583.4 " high-airtight buttress thread casing-pipe connection structure " is by factory's end sleeve pipe, oil field end sleeve pipe and box cupling are formed, the two ends of factory end sleeve pipe all be shaped on taper trapezoidal partially outside spiral shell, the two ends of oil field end sleeve pipe be shaped on taper trapezoidal partially outside spiral shell, be shaped on the inclined to one side trapezoidal internal thread of taper at the box cupling two ends, two ends wall thickness end face at factory's end sleeve pipe and oil field end sleeve pipe is provided with arc-shaped curved surface, factory end sleeve pipe and oil field end sleeve pipe by the trapezoidal partially external screw thread of taper with after box cupling is connected, factory's end sleeve pipe contacts in axial formation interference with the both ends of the surface of oil field end sleeve pipe in box cupling, promptly two sleeve pipe pipe ends compress mutually, tube wall axially produces weak property plastic strain, forms the sealing surface of metal to metal.
The using method of described high-airtight buttress thread casing-pipe connection structure comprises the steps:
The first step is held sleeve pipe and box cupling to carry out deciding moment of torsion factory and is screwed, guarantee bonding strength between the two;
Second step, oil field end sleeve pipe is screwed in the other end of box cupling, with torque wrench clamping oil field end sleeve pipe, mark line on the end sleeve pipe of oil field is overlapped with normal line on the box cupling, note the size of the shown moment of torsion of torque wrench this moment, this torque value is exactly the standard value that produces the interference sealing between factory's end sleeve pipe and the oil field end sleeve pipe;
The 3rd step, when after oil field end sleeve pipe is removed, needing to spin again, as long as oil field end sleeve pipe is screwed in the box cupling, make factory's end sleeve pipe and box cupling fixing synchronously, screw oil field end sleeve pipe with torque wrench again, when the moment of torsion of torque wrench reaches standard value, illustrate that promptly the sealed increscence amount that produces between factory's end sleeve pipe and the oil field end sleeve pipe has reached predetermined value.
In the 3rd step, the scheme that factory end sleeve pipe and box cupling are fixed synchronously be following in any:
1. before factory end sleeve pipe and box cupling spin, be coated with in the connecting thread section of factory's end sleeve pipe and box cupling earlier and add metal adhesive, treat the oil field end sleeve pipe that spins again behind the metal adhesive formation strong bond layer;
2. after factory end sleeve pipe and box cupling screw and detain, hold sleeve pipe and box cupling integrally welded factory;
3. is connected by the retaining sound construction between factory end sleeve pipe and the box cupling, prevents that factory from holding sleeve pipe oppositely to become flexible with respect to box cupling.
The retaining structure that is provided with between described factory end sleeve pipe and the box cupling is: after factory holds sleeve pipe and box cupling to screw button, join brill stop pin counterbore in both sections of being threaded, the stop pin counterbore passes box cupling, but does not pass factory's end casing wall, is pressed into stop pin in the stop pin counterbore.
The retaining structure that is provided with between described factory end sleeve pipe and the box cupling is: the end face at box cupling is provided with end face groove, is fixed with retaining plate on the non-threaded cylindrical of factory's end sleeve pipe, and an end of retaining plate places in the end face groove of box cupling.
4. clamping box cupling and factory end sleeve pipe simultaneously with special fixture.
Hold sleeve pipe to dock the required torque value size of formation end face interference sealing owing to recorded oil field end sleeve pipe in advance with factory by box cupling by test, in use, when after oil field end sleeve pipe is removed, spinning once more, as long as guarantee between factory's end sleeve pipe and the box cupling fixing synchronously, and make the moment of torsion that screws of oil field end sleeve pipe reach the moment of torsion standard value, show promptly that oil field end sleeve pipe and factory end sleeve pipe is connected by box cupling to have formed the end face interference and seal.The fixing synchronously method of the relative box cupling of factory's end sleeve pipe that is provided simultaneously can both guarantee that when spinning oil field end sleeve pipe factory's end sleeve pipe maintains static with respect to box cupling, can effectively prevent to produce between factory's end sleeve pipe and the box cupling loosening.
[description of drawings]
Fig. 1～Fig. 4 is several retaining syndetons between factory's end sleeve pipe and the box cupling.
Among the figure, 1-factory end sleeve pipe; The 2-box cupling; 3-strong bond layer; 4-stop pin counterbore; The 5-stop pin; The 6-end face groove; The 7-retaining plate; The 8-rivet.
[specific embodiment]
Embodiment 1: the using method of described high-airtight buttress thread casing-pipe connection structure comprises the steps:
The first step is held sleeve pipe and box cupling to carry out deciding moment of torsion factory and is screwed, guarantee bonding strength between the two;
Second step, oil field end sleeve pipe is screwed in the other end of box cupling, with torque wrench clamping oil field end sleeve pipe, mark line on the end sleeve pipe of oil field is overlapped with normal line on the box cupling, note the size of the shown moment of torsion of torque wrench this moment, this torque value is exactly the standard value that produces the interference sealing between factory's end sleeve pipe and the oil field end sleeve pipe;
The 3rd step, when after oil field end sleeve pipe is removed, needing to spin again, as long as oil field end sleeve pipe is screwed in the box cupling, manage to make factory's end sleeve pipe and box cupling fixing synchronously, screw oil field end sleeve pipe with torque wrench again, when the moment of torsion of torque wrench reaches standard value, illustrate that promptly the sealed increscence amount that produces between factory's end sleeve pipe and the oil field end sleeve pipe has reached predetermined value.
In the 3rd step, the scheme that factory's end sleeve pipe 1 and box cupling 2 are fixed synchronously is any in the following method:
1. before factory end sleeve pipe 1 and box cupling 2 spin, be coated with in the connecting thread section of factory's end sleeve pipe 1 and box cupling 2 earlier and add metal adhesive, treat that metal adhesive forms the oil field end sleeve pipe that spins again behind the strong bond layer 3.
2. after factory's end sleeve pipe 1 screws button with box cupling 2, integrally welded between factory's end sleeve pipe 1 and box cupling 2.
3. screw button at factory's end sleeve pipe 1 with box cupling 2, join in both sections of being threaded and bore stop pin counterbore 4, stop pin counterbore 4 passes box cupling 2, but does not pass the wall thickness of factory's end sleeve pipe 1, is pressed into stop pin 5 in stop pin counterbore 4.
4. the end face at box cupling 2 is provided with end face groove 6, is fixed with retaining plate 7 by rivet 8 on factory's end sleeve pipe 1 non-threaded cylindrical, and an end of retaining plate 7 places in the end face groove 6 of box cupling 2.
5. clamping box cupling 2 and factory end sleeve pipe 1 simultaneously with special fixture.
Claims (2)
1. the using method of a high-airtight buttress thread casing-pipe connection structure comprises the steps:
The first step is held sleeve pipe (1) and box cupling (2) to carry out deciding moment of torsion factory and is screwed, guarantee bonding strength between the two;
Second step, oil field end sleeve pipe is screwed in the other end of box cupling (2), with torque wrench clamping oil field end sleeve pipe, mark line on the sleeve in oil field is overlapped with normal line on the box cupling (2), note the size of the shown moment of torsion of torque wrench this moment, this torque value is exactly the standard value that produces the interference sealing between factory's end sleeve pipe (1) and the oil field end sleeve pipe;
The 3rd step, when after oil field end sleeve pipe is removed, needing to spin again, as long as oil field end sleeve pipe is screwed in the box cupling (2), make factory's end sleeve pipe (1) and box cupling (2) fixing synchronously, screw oil field end sleeve pipe with torque wrench again, when the moment of torsion of torque wrench reaches standard value, illustrate that promptly the sealed increscence amount that produces between factory's end sleeve pipe (1) and the oil field end sleeve pipe has reached predetermined value.
2. according to the using method of the described high-airtight buttress thread casing-pipe connection structure of claim 1, it is characterized in that: in the 3rd step, make the fixing synchronously scheme of factory end sleeve pipe (1) and box cupling (2) be following in any:
1. before factory end sleeve pipe (1) and box cupling (2) spin, be coated with in the connecting thread section of factory's end sleeve pipe (1) and box cupling (2) earlier and add metal adhesive, treat that metal adhesive forms the oil field end sleeve pipe that spins again behind the strong bond layer;
2. after factory's end sleeve pipe (1) screws button with box cupling (2), hold sleeve pipe (1) and box cupling (2) integrally welded factory;
3. be connected by the retaining sound construction between factory end sleeve pipe (1) and the box cupling (2), prevent that factory from holding sleeve pipe (1) to become flexible with respect to box cupling (2) is reverse;
The retaining structure that is provided with between described factory end sleeve pipe (1) and the box cupling (2) is: after factory's end sleeve pipe (1) and box cupling (2) screw button, join brill stop pin counterbore (4) in both sections of being threaded, stop pin counterbore (4) passes box cupling (2), but do not pass factory's end casing wall, in stop pin counterbore (4), be pressed into stop pin (5);
The retaining structure that is provided with between described factory end sleeve pipe (1) and the box cupling (2) is: the end face at box cupling (2) is provided with end face groove (6), be fixed with retaining plate (7) on the non-threaded cylindrical of factory's end sleeve pipe (1), an end of retaining plate (7) places in the end face groove (6) of box cupling (2);
4. clamping box cupling (6) and factory end sleeve pipe (1) simultaneously with special fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100373041A CN102162340A (en) | 2011-02-14 | 2011-02-14 | Using method for connection structure of high-airtight seal buttress thread casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100373041A CN102162340A (en) | 2011-02-14 | 2011-02-14 | Using method for connection structure of high-airtight seal buttress thread casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102162340A true CN102162340A (en) | 2011-08-24 |
Family
ID=44463762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100373041A Pending CN102162340A (en) | 2011-02-14 | 2011-02-14 | Using method for connection structure of high-airtight seal buttress thread casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102162340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339716A (en) * | 2018-11-27 | 2019-02-15 | 北京新能正源智能装备有限公司 | Thread off prevention connecting device and anticreep for drilling rod assemble body |
| CN119333064A (en) * | 2024-12-18 | 2025-01-21 | 江苏常宝钢管股份有限公司 | A gas-tight oil pipe connection structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108215A (en) * | 1984-10-08 | 1986-04-10 | 瓦洛海克股份有限公司 | Restraint zone has the apparatus and method of the screwed pipe joint of limit stops |
| WO1991000974A1 (en) * | 1989-07-12 | 1991-01-24 | Halbergerhütte Gmbh | Pipe connection for advance working pipes laid underground by an advance working technique |
| CN2292160Y (en) * | 1996-12-11 | 1998-09-23 | 邓健 | Sealing device for petroleum sucker rod |
-
2011
- 2011-02-14 CN CN2011100373041A patent/CN102162340A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108215A (en) * | 1984-10-08 | 1986-04-10 | 瓦洛海克股份有限公司 | Restraint zone has the apparatus and method of the screwed pipe joint of limit stops |
| WO1991000974A1 (en) * | 1989-07-12 | 1991-01-24 | Halbergerhütte Gmbh | Pipe connection for advance working pipes laid underground by an advance working technique |
| CN2292160Y (en) * | 1996-12-11 | 1998-09-23 | 邓健 | Sealing device for petroleum sucker rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339716A (en) * | 2018-11-27 | 2019-02-15 | 北京新能正源智能装备有限公司 | Thread off prevention connecting device and anticreep for drilling rod assemble body |
| CN119333064A (en) * | 2024-12-18 | 2025-01-21 | 江苏常宝钢管股份有限公司 | A gas-tight oil pipe connection structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101307845A (en) | Oil conduit screwed connection structure | |
| CN105276317A (en) | Novel pressure hose and connecting component thereof | |
| CN205261090U (en) | Pressure hose, connection spare part that uses rather than cooperation and composite set of two | |
| WO2011054161A1 (en) | Hermetic threaded joint | |
| CN102162340A (en) | Using method for connection structure of high-airtight seal buttress thread casing pipe | |
| CN202812592U (en) | Sleeve and pipe quick connector | |
| CN102678065A (en) | High-airtightness special buttress thread pipe joint | |
| CN221482962U (en) | Oil pipe buckling joint device | |
| CN102852466B (en) | Special buttress thread oil sleeve connecting joint | |
| CN202039786U (en) | Connecting structure for high-pressure well completion oil pipe | |
| CN201943606U (en) | Anti-loosening connection structure for highly-airtight threaded sleeves | |
| CN202252456U (en) | Pipe joint | |
| CN102352727A (en) | 8TPI oil or casing pipe threaded connector | |
| CN217634349U (en) | Pipe joint with self-locking anti-loosing structure | |
| CN102287143B (en) | Oil/sleeve pipe threaded connection joint with air-tight structure | |
| CN102116135A (en) | Looseness-proof high-air tightness connecting structure with threaded sleeves | |
| CN212361109U (en) | Anti-drop quick pipe joint | |
| CN201756921U (en) | Coupling-free petroleum casing pipe with variable-pitch buttress threads | |
| CN205175610U (en) | Erection joint of LNG line pressure sensor | |
| CN102852468B (en) | High-sealing special circular thread oil sleeve connection connector | |
| CN109778852B (en) | T-shaped connecting sleeve for pulling and pressing composite anchor rod and anchor rod | |
| CN201787258U (en) | Detachable connector for pipe fittings | |
| CN202140036U (en) | Threaded oil/sleeve pipe connector for air-tight sealing structure | |
| CN201259048Y (en) | Straight joint | |
| CN201021741Y (en) | Pipe connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110824 |