CN103791181B - The oil field tubular configured joint that compressive property is improved - Google Patents
The oil field tubular configured joint that compressive property is improved Download PDFInfo
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- CN103791181B CN103791181B CN201310394531.9A CN201310394531A CN103791181B CN 103791181 B CN103791181 B CN 103791181B CN 201310394531 A CN201310394531 A CN 201310394531A CN 103791181 B CN103791181 B CN 103791181B
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
- F16L15/002—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with more then one threaded section
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Earth Drilling (AREA)
Abstract
Oil field tubular threaded joints (10) include the male member (12) with the first outside tapered thread (24) and the second outside tapered thread (26).Female component includes the first interior tapered screw thread (14) and the second interior tapered screw thread (16).Spiral torque shoulder (40,42) is arranged on male member and female component and axially spaced between corresponding first and second screw thread.The spire of each torque shoulder includes being located at multiple rotary bodies on male member and female component with resistance to compression tooth side.
Description
The application is that entitled " compressive property improve oil field tubular configured joint ", international filing date are November 4 in 2008
Day, point that international application no is the application for a patent for invention that PCT/US2008/012444, national applications number are 200880111519.X
Case application.
Technical field
The present invention relates to oil field tubular threaded joints, relate more particularly to tapered thread and torque shoulder
The high reliability joint of (torque shoulder).Oil field tubular threaded joints, which have, to be made compressive property and allows to reverse negative
The feature of lotus increase, more particularly, tubular configured joint limits pre-add load-loss.
Background technology
It is related common problem is the fact that the influence and caused preloading of pressure butt joint with tubular configured joint to oil field
Loss.Although many joints can be subjected to high compression loads, the advantage of preloading can be lost when pressure is reduced, and cause joint
Seepage.Common oil field includes the axially-spaced screw thread of two stageds on different-diameter with joint, and positioned at ladder
Intermediate torque shoulder between screw thread.
The integral joint (for example, flat or the outer drive connector of half flat) of non-jumping-up has pipe thickness when it is processed
Inherent limitations.Flush joint has and pipe identical external diameter.Half flush joint is also referred to as expanding female joint, because pipe is adding
One end expansion of work the moon (mother) joint.Different from upsetting, wall portion can be moved to different positions by die forging or cold forming, but not
Thickness can be significantly affected.Joint designer often faces the problem of needing balance many features.This includes seal, durable
Screw thread form and storage preload the position of moment of torsion, most typically from torque shoulder form.Simultaneously will keeping joint performance
It is extremely difficult that these features, which are contained in the confined space,.
There is some monoblock types, two stageds, negative load flank, taper, double density sealing joint in the market.GP ANJO include
Negative load flank screw thread form, two stageds, tapered thread pitch, 15 degree of torque shoulder angles, interior sealings and positioned at female threaded pipe end
External seal at face.Hydril SLX have negative load flank screw thread form, two stageds, tapered thread pitch, 15 degree of moments of torsion
Shoulder angle, interior sealing and the external seal center contact on small ladder.VAM SLIJII joints have negative load flank screw thread
Shape, two stageds, tapered thread pitch, vertical torque shoulder angle, interior sealing and the external seal at box face.
Also there is monoblock type, single-order ladder type, negative load flank, taper, single seal nipple in the market.The joints of Hydril 523 have negative hold
Carry tooth side dovetail screw thread form, it is negative to buckle teeth side dovetail screw thread form, single-order ladder, tapered thread pitch, by carrying tooth side and right
Torque shoulder, interior sealing and the external seal provided by thread lubricant and the form of thread that the synchro-meshing of buckle teeth side is obtained.These
Joint due to its use to buckle teeth side as thrust shoulder referred to as wedge thread.
There is the screw thread that there is carrying tooth side and engaged to buckle teeth side in final rigging position.These connect including API
Head, the API joints include the LTC and STC that commonly referred to as 8 teeth justify (eight-round).These are referred to as tooth side to tooth side spiral shell
Line.Grant Prideco TC-II joints production line has carrying and buckle teeth side is engaged.These screw threads due to slippage
Largely abandoned in integral joint.Slippage is the phenomenon specific to such as integral joint for flexible bigger joint.When these connect
Head bears high tensile load, and screw thread departs from and disconnected due to acting on the radial reaction force on carrying tooth side.Negative carrying tooth
Side shape solves the problem.
Regular screw threads shape includes tooth root to peak contact.This is for most of negative load flank screw thread and including partially trapezoidal
Common to a part of API joints of screw thread form.Lacking negative load flank makes the shape not desired by integral joint.Lacking
In the case of wedge portion, negative load flank and tooth root are the most common screw thread for high-performance integral joint to tooth top screw thread form
Shape.The weak point of this screw thread form is in buckle teeth side clearance.This limits it and resisted to prevent thread gluing required
Pressure, bending resistance and torsional property.
Finally, wedge thread using different carryings and to buckle teeth side helical pitch with period of assembly produce tooth side to tooth side
And/or tooth root is engaged to tooth top, while avoiding the thread gluing under positive or negative flank angle.The shortcoming of this screw thread form is the absence of and it
Position and the assembling repeatability related to the influence of metal sealing to metal.This can be compensated with length, low taper seal,
The seal has relatively low interference variability and higher axial location variability.Pass through what is engaged simultaneously with carrying tooth side
Spiral resistance to compression tooth side obtains high resistance to compression, bending resistance and torsional strength together with negative load flank angle, so as to avoid slipping and select to be used for
Additional radial support it is negative to buckle teeth side.
Instant invention overcomes the defect of prior art, improved oil field tubular configured joint will be disclosed below, and it uses improvement
Torque shoulder with limit compression to preload loss influence.
The content of the invention
Joint includes spiral torque shoulder to limit compression to preloading the influence lost.Joint can be used for the two of taper
Staged joint, wherein, torque shoulder is middle part ladder and can be comprising tooth root to peak contact, negative load flank screw thread shape
Shape.Joint with the limited material that can obtain torque shoulder, such as flat and half flat integral joint can be significantly benefited from
These features.Spiral torque shoulder and engagement resistance to compression tooth side on torque shoulder screw thread are in limited radially spaced situation
Under increase axial bearing area.These targets can be realized using the axial length and bearing surface of spiral torque shoulder.
In one embodiment, oil field with tubular threaded joints include male member, its have the first radial direction external screw thread and with
The second axially-spaced radial direction external screw thread of the first radial direction external screw thread.Joint includes female component, and it has the 3rd inside spiral shell in footpath
Line and the fourth radial direction internal thread axially-spaced with the 3rd radial direction internal thread, when joint is assembled, the first screw thread and the 3rd
Screw thread coordinates, and the second screw thread and the 4th screw thread coordinate.Male member spiral torque shoulder is arranged between the first and second screw threads simultaneously
And formed by multiple spiral intermediate threads.Female component spiral torque shoulder be equally arranged between the third and fourth screw thread and by
Multiple screws are formed.When joint is assembled, male member spiral torque shoulder screw thread and female component spiral torque shoulder screw thread
Coordinate.
These and other feature and advantage of the present invention will be become apparent by following detailed description, wherein, reference
Drawings below.
Brief description of the drawings
Fig. 1 is the sectional view of the male and female screw thread of oil field tubular configured joint.
Fig. 2 is the sectional view in gap between right side spiral torque shoulder and left side screw thread.Note on screw thread to buckle teeth side
Carrying tooth side clearance on gap and spiral torque shoulder.
Fig. 3 shows the optional spy of the thrust shoulder below the thread root plane of spiral torque shoulder core
Levy.
Fig. 4 shows the initial engagement of male and female screw thread.
Fig. 5 shows the further engagement of male and female screw thread.
Between Fig. 6 is shown in greater detail in the gap in spiral torque shoulder as shown on the right and the screw thread as shown in left side
Gap.
Fig. 7 is shown in greater detail when joint is assembled completely, for spiral torque shoulder as shown on the right and such as
The gap of another screw thread form of screw thread shown in left side.
Fig. 8 shows the radial distance for thrust shoulder.
Fig. 9 shows optional joint and different tapers for center section and screw thread form to contribute between make-up
Gap.
Figure 10 shows optional design, it is shown that the spiral torque shoulder positioned at right side and position before joint is assembled completely
Screw thread in left side.
Embodiment
Fig. 1 shows the oil with the spiral torque shoulder section between the tapered thread of two stepped thread joints
Field tubular configured joint.Play a part of spiral torque shoulder positioned at the 3rd group of middle screw thread.Oil field tubular threaded joints 10
Including male member 12, it has outside the first outside tapered thread 14 and axially-spaced with first outside tapered thread second
Portion's tapered thread 16.Joint also includes female component 22, and it has the first interior tapered coordinated with the first outside tapered thread 14
Screw thread 24 and the second interior tapered screw thread 26 coordinated with the second outside tapered thread 16.Joint includes being located at male member and female structure
In each in part and the spiral torque shoulder axially-spaced with respective first and second screw thread.Spiral torque shoulder it is every
Individual spire (helix) is included in multiple with resistance to compression tooth in the male member being engaged with each other and female component during joint assembling
The rotary body (revolutions) of side.
As Fig. 2 is displayed the details of, when joint is assembled, make-up or resistance to compression tooth side 30 on middle groups screw thread,
32 engagements, while the tension tooth side 34,36 on first and second groups of screw threads is engaged.Fig. 2 shows the spiral in male member
One of another screw thread 42 of spiral torque shoulder on one of screw thread 40 of torque shoulder and female component.Spiral torsional in male member
Square shoulder is the continuous shoulder being meshed along multiple rotary bodies with the similar continuous shoulder on female component.Fig. 2 shows three groups
The symmetry and profile of screw thread, and function difference.Center section on the right side of Fig. 2 forms spiral torque shoulder simultaneously
Engaged with make-up or resistance to compression tooth side.Spiral torque shoulder 40,42 has the thread groove arranged along tapered planar, and the taper is put down
Face outwards arranges that the externally threaded plane of male member is in torque shoulder and public structure relative to the externally threaded planar radial of male member
Axially spaced-apart is arranged between part front end.Each ladder in other two ladders is engaged with carrying or tension tooth side, on the left of such as Fig. 2
It is shown.
Fig. 3 shows optional feature, wherein, the thrust shoulder area 30 being located at below thread root plane 32 is set.Make-up
Tooth side is alternatively arranged as thrust shoulder and used.This optional feature can be used to utilize the increase pair of the asymmetric feature of thrust shoulder
The helical surface area of buckle teeth side.Can be in the fitting joint repeatedly of identical position, so as to enhance metal to metal seal part
Sealing reliability.
The present invention is independently increased by the device institute except standard radial torque shoulder using spiral shoulder or the 3rd screw thread
Obtain resistance to compression and the torsional property of connection.For two stepped thread joints, spiral torque shoulder is preferably scala media
Ladder and the 3rd screw thread of offer.For upstream and downstream tension ladder, industrial standard negative load flank, tooth root are to tooth top spiral shell
Line shape can keep constant.The flexible permission center ladder of screw thread form obtains compressive property.In one embodiment, in institute
Have and identical shape, cone angle and helical pitch are used on three ladders, with optional thrust shoulder.Because tooth root is to peak contact,
Thread interference can be zero, because pitch is overlapping, without radially preloading.Fig. 4 shows joint when initial engagement or assembling
10.In the stage, it can be seen that the screw thread 14,16 in male member is engaged with the screw thread 24,26 on female component, and still, spiral stops
Shoulder is pushed away not engage yet.In position shown in Fig. 5, female component 22 rotates relative to male member 12 so that each two staged
Three or more engagements in screw thread, and the engagement of one or more spiral torque shoulder screw threads.Figure is shown in greater detail in Fig. 6
The screw thread engagement in stage shown in 5, wherein, the spiral torque shoulder 42 on female component 22 can spiral corresponding in male member 12
Torque shoulder 40 departs from, while the resistance to compression tooth side engagement on screw thread 16 and 26, but there is sizable tooth root and separated to tooth top.
The result of assembling process is that interlude is to rotate freely screw thread before final power tightens position, described final
Power is tightened in position, and buckle teeth side and optional retaining ledge are engaged on the ladder of center, and carrying tooth side is engaged on remaining
On two tension ladders.In scheme shown in Fig. 7, different screw thread forms is used for spiral torque shoulder.The screw thread shape
Shape is using contributing to the positive carrying tooth side in make-up gap.Interlude close to before final rigging position have rotate freely spiral shell
Line, wherein, buckle teeth side and optional retaining ledge are engaged on the ladder of center, carrying tooth side is engaged on remaining two ladders
On.To buckle teeth side 50,51 in the figure 7 in engagement, and tension tooth side 52,53 is engaged on each in two stepped threads
On.For the repeatability processed versatility and obtained using general utility tool, screw thread form comes to all three ladders
Saying can be with identical.When not engaging, negative load flank is not needed on the ladder of center.For make-up gap, preferably
There is no the structure of negative load flank.Further improvement is that being used for other purposes using the radial distance of thrust shoulder, for example, improve
Cleaning is processed, increase tension area or reduces the external diameter for modification space.In this configuration, it is not necessary to which Fig. 8 is shown below
Gap or size 55.What Fig. 8 also show center ladder can be individually or together with traditional circular thrust shoulder to buckle teeth side
As thrust shoulder.
Although center ladder can be only thrust shoulder to buckle teeth side, buckle teeth side is preferably being provided in smaller assembling
Reduction is formed and manufacturing cost in the case of the repeatability of position.In a preferred embodiment, it is used to improve rigging position by playing
The effect of the resistance to compression shoulder and thrust shoulder of repeatability, the thrust shoulder area enhancing below the thread root plane of interlude
To buckle teeth side.Equally, it is alternatively possible to using the cone angle of region increase shown in the Fig. 8 being located at below the plane of root, make interlude
The different deviation and delay engagement to reduce torque shoulder of cone angle to prevent thread gluing.Fig. 9 is shown on interlude 60
Different cone angle is engaged with reducing offset distance and delay.Using improved carrying tooth side and cone angle, have before just wanting power to tighten
The thread pitch of increase.This is clear advantage in terms of thread gluing is avoided.The increase cone angle of interlude can sacrifice as described above
Most of gap 55.This can be the optional application of joint radial direction material.
When the helical pitch between studying two ladders is poor, it can be estimated that assemble sequence is to avoid tension ladder and resistance to compression ladder
Between interference situation.Due to the wedge based on the difference of helical angle, exist and result in two different leads to enter
The remarkable advantage that luggage is matched somebody with somebody.In fact, by disconnecting this feature being located between two separation ladders, people can obtain wedge shape
Screw thread advantage.Overcome install obstacle need be used in combination design feature combination, wherein, carrying flank angle and cone angle from it is different
Helical pitch combine to ensure steady assembling.Figure 10 shows joint, wherein, in the height with the screw offer by interlude
In the case of imitating torque shoulder, carrying flank angle and cone angle are used in combination to ensure the steady of screw thread 16,26 from different helical pitches
Assembling.
Spiral torque shoulder is disposed axially in two ladders in male member and female component by accompanying drawing illustrated embodiment
Between screw thread.In another embodiment, each male member and female component are provided with the tapered thread for engagement, wherein,
Axially-spaced spiral torque shoulder is arranged on male member and female component to provide the resistance to compression of increase to oil field tubular configured joint
And torsional property.Each spire of spiral torque shoulder can be included in when joint is assembled in male member and female component
Multiple rotary bodies with resistance to compression tooth side.Spiral torque shoulder can be formed substantially along outside tapered thread and interior tapered
The thread groove of the tapered planar arrangement of screw thread.
The direction of radial reaction force can be opposite.Thread gluing problem under being mismatched due to some tolerances, bears tooth side shape
May not be consistent to tooth side contacts with tooth side.Also there is tooth root between the threads to tip clearance.
During tubular configured joint compresses, central role power passes through torque shoulder, and torque shoulder disclosed herein is preferably
Spiral torque shoulder, is limited by making the load path through pipe be aligned with the load path through torque shoulder and joint
Secondary bending load.This feature can obtain high pulling torque shoulder area, while reducing the rotation between screw thread engagement, finally
Assembling minimizes Thread-sticking (galling).
The present invention oil field tubular threaded joints can be thread connection type, with single-order ladder shell line and with the screw thread
Axially-spaced spiral torque shoulder, or with two axially-spaced assembling screw threads and intermediate conveyor screw torque shoulder.It is optional
Ground, joint can be monoblock type public affairs/expansion female joint, wherein, for all three ladder screw threads, spiral thrust shoulder is set
Put between the first and second screw threads, as disclosed herein.In other embodiments, joint can be overall flat OD types
Or overall jumping-up type, wherein, the ladder (two or more assembling ladders and spiral torque shoulder) of three or more is arranged on
On joint.
Overall jumping-up type joint can include being used for large-sized welding point.Oil field tubular configured joint disclosed herein can
To be used as the reliable joints for oil pipe, sleeve pipe, marine riser or conduit.Because available for the gold at joint OD and ID positions
Belong to the limited material to metal sealing, for the non-jumping-up joint of monoblock type, two axially-spaced assembling screw threads and centre
Spiral torque shoulder is preferred so that pressure is initially sealed by corresponding metal to metal seal part.The present embodiment leaves
Enough wall thickness are with receiving material and seal.Embodiment with an assembling screw thread and a spiral torque shoulder is especially fitted
For the thread connection joint being welded on tube end, monoblock type public affairs/expansion female joint or overall flat OD joints.Using more
Material can be used more, and the complexity of the joint with the second assembling screw thread becomes unnecessary.However, because torque shoulder is spiral shape
, welding or the commonly required forging of the integral joint of jumping-up or upsetting can adjust the second additional assembling ladder.It can set
Setting in the API jumping-ups portion on oil pipe, or extra jumping-up portion can be set according to the material requirements of reduction.It is disclosed herein
Spiral torque shoulder is arranged in cone, but in other embodiments, spiral torque shoulder can not include cone.Although such as
This, spiral torque shoulder can be arranged between the taper two benches screw thread in male member and female component.Positioned at screw thread connection
The carrying flank angle of assembling screw thread on joint or monoblock type public affairs/expansion female joint can be negative or positive, and make-up flank angle is same
Sample can be negative or positive.
When the carrying flank angle on assembling screw thread is timing, assembling screw thread overcomes generally female overall with flat OD and expansion
The related slippage of joint (it generally has high flexibility).When without using wedge thread, the positive carrying tooth side on assembling screw thread permits
Perhaps to the tooth side of buckle teeth side is to tooth side contacts and contributes to desired resistance to compression and anti-bending strength.For marine riser, because people
There is no and open and close the fast load/unload situation related to buckle teeth side clearance, tooth side to tooth side, just carry tooth
Side is because stress amplification coefficient is reduced and becomes favourable.When joint is pressurized, obtained using negative load flank assembling screw thread form
Small for tooth side, positive carrying tooth side screw thread form is difficult for tooth side to buckle teeth side clearance.
For for tension or the make-up flank angle of assembling screw thread, make-up flank angle can be influenceed needed for acquisition shoulder
Moment of torsion, because pitch interference angle controls the direction of reaction force.In the case of no wedge-shaped part, tooth side is usual to tooth side screw thread
There is bigger variability in terms of the moment of torsion needed for obtaining shoulder.Moment of torsion is also by selection make-up flank angle and carrying flank angle
Influence.In many cases, for assembling the make-up flank angle of screw thread for just.Negative make-up flank angle for assembling screw thread can
It is no to play a part of capture angle (trapping angle), but unless be screwed with wedge type screw thread or positive carrying tooth side
Then joint becomes to be difficult to assemble.For dovetail situation, negative load flank and joint can be made to be easy to produce buckle teeth side
Spend thread gluing.Make-up flank angle determines the direction of the reaction force produced by compression, and the angle closer to vertical direction can make radially
Reaction force is minimized, and can have higher radial reaction force closer to the angle parallel with connector center line.If in addition,
The make-up flank angle for assembling screw thread is negative, and this can push together joint component, if just, can push them open.When non-
During very close to seal, the effect to screw thread translates into foundation or removes sealing function.
The preferred carrying flank angle of torque shoulder can turn into whether be individually engaged on the region on buckle teeth side because
Element.If so, carrying flank angle can influence make-up gap.Mirror image effect present in tension or assembling ladder allows to lead to
Ladder is accurately controlled with instrument etc. to ladder relation.If the shearing and pressure-bearing safety coefficient of assembling ladder are in border, with holding
The engagement of tooth side is carried to have the advantage that.If allow tensile force by spiral assemble screw thread transmit, assemble screw thread positive negative angle it is excellent
Shortcoming is similar with tension screw thread, just as described in the above like that.Helical pitch between torque shoulder ladder and tension ladder
During with cone angle difference correlation, angle on the occasion of bigger, be more difficult to engage too early with torque shoulder ladder.Torque shoulder ladder it is preferred
Make-up flank angle equally reflects discussion related to tension ladder above.With engaging for the make-up flank angle of torque shoulder screw thread
It is necessary.Negative angle is worked in pressure-bearing, and torque load is radially-inwardly transmitted.Different helical pitches is used compared with assembling screw thread
And/or during cone angle, negative angle is preferred, so that it is guaranteed that make-up gap.If be connected with the negative load flank on tension ladder, bear
Angle equally can easily produce excessive thread gluing.Positive angle tends to separate pin end and female joint in loading.For overall flat
For OD joints, carrying tooth side tension angle can be 90 °, and for this overall flat OD joints, make-up flank angle equally may be used
For 90 °.Similarly, for overall flat OD joints, the carrying flank angle and make-up flank angle of torque shoulder can be
90°。
Joint screw thread can provide tooth side and tooth side is engaged, or screw thread tooth top is engaged to tooth root.In spiral torque shoulder
Screw thread engagement similarly for tooth side to tooth side engage or tooth root to tooth top engage.For being answered with high-fatigue strength, compression
For the joint of power and bending stress, the tooth side for assembling screw thread is preferred to the engagement of tooth side.Tooth root assembles screw thread to tooth top can
To reuse and be easy to check.Tooth side can improve thread seal to tooth side assembling screw thread, meanwhile, without using commonly referred to as
In the case of the double helical pitches for making wedge thread, the tooth root of these screw threads is engaged to tooth top is adapted to negative load flank.Therefore, for bag
The many applications for including flat OD or expanding including female integral joint come institute, and the tooth root for assembling screw thread is preferred to tooth top engagement.
The joint of external seal can be provided for riser joints, thread connection joint or jumping-up or welding integral joint and screw thread
For, the tooth side of these screw threads is preferred to the engagement of tooth side.If assembling the screw thread shape between screw thread and spiral torque shoulder
Shape is identical, and common instrument can be used to cut and formed screw thread.Assemble carrying tooth side and the spiral torque shoulder ladder of ladder
An instrument, an amount of bias and rotor rack position can be passed through to the distance between buckle teeth side control so that machine
Controlling the repeatability of the size becomes favourable.When these screw thread forms are different, people can be by changing cone angle and helical pitch
Gap is maximized, and the shape for its standalone feature is optimized.Dare between tension shoulder and torque shoulder
Tower (delta) helical pitch can be constant, or can change, and the screw thread form in two stepped threads can be with identical or different.
The delay of torque shoulder is contributed to engage as the cone angle between tension ladder and the assembling screw thread of torque shoulder, from
And it is minimized by the thread gluing of torque shoulder.Bigger cone angle often causes in assembling process deeper make-up and nibbled later
Close, and more small-angle has bigger " compact distance (standoff) ".It can be linear to assemble screw thread and/or torque shoulder,
And it is non-tapered.
The joint of the present invention can obtain the important advantage of negative load flank, but can lose by engaging acquisition to buckle teeth side
Axial stability.The pipe performance that can be kept is resistance to compression, bending resistance and antitorque.
Although the particular embodiment of the present invention is described in considerable detail here, this can be only used for explaining
Various aspects of the invention, rather than the limitation invention scope that such as following claims are limited.Those skilled in the art should
When recognizing, shown and described embodiment is exemplary, without departing from the present invention, when implementing the present invention
Various other replacements, change can be carried out and retrofited, include but is not limited to those design alternatives clearly discussed here.Although
Through refer to the attached drawing, invention has been described, but it is to be understood that can carry out removing this within the spirit and scope of the present invention
In display or suggestion outside other and further modifications.
Claims (12)
1. a kind of oil field tubular threaded joints, including：
With externally threaded male member；
Female component, it has the internal thread engaged with the external screw thread；
The external screw thread and internal thread be respectively provided with engaged when joint is assembled to buckle teeth side；With
Include the spiral torque shoulder of multiple rotary bodies, spiral moment of torsion platform on each in the male member and female component
Each spire of shoulder includes being located at the resistance to compression tooth side on each in the male member and female component,
Wherein, in initial engagement, the external screw thread in male member is engaged with the internal thread on female component, still, spiral moment of torsion platform
Shoulder is not engaged yet；When joint is finally assembled, the resistance to compression tooth side is engaged with each other；
The spiral torque shoulder independently obtains resistance to compression and the torsional property of connection.
2. oil field tubular threaded joints as claimed in claim 1, wherein, the spiral torque shoulder has thread groove, institute
Thread groove is stated substantially along the horizontal layout being spaced outward from relative to external screw thread planar radial.
3. oil field tubular threaded joints as claimed in claim 1, wherein, it is each in the male member and female component
On spiral torque shoulder be continuous shoulder for the multiple rotary body.
4. oil field tubular threaded joints as claimed in claim 1, wherein, the spiral shell on male member, female component and spiral shoulder
Screw thread in line or male member and female component has substantially the same cone angle and helical pitch.
5. oil field tubular threaded joints as claimed in claim 1, wherein, the screw thread in male member and female component has and torsion
The different helical pitch of screw on square shoulder.
6. oil field tubular threaded joints as claimed in claim 1, wherein, each having in the external screw thread and internal thread
There is negative load flank.
7. oil field tubular threaded joints as claimed in claim 1, in addition to：Another external screw thread in male member, and
Another internal thread engaged on female component with another external screw thread.
8. a kind of method of formation oil field tubular threaded joints, including：
Male member with outside tapered thread is provided；With
Female component with the interior tapered screw thread engaged with the outside tapered thread is provided；With
The spiral torque shoulder being located on each in the male member and female component is provided, the spiral torque shoulder it is each
Spire includes the multiple rotary bodies with resistance to compression tooth side being located in the male member and female component；
Wherein, in initial engagement, the external screw thread in male member is engaged with the internal thread on female component, still, spiral moment of torsion platform
Shoulder is not engaged yet；When joint is finally assembled, the resistance to compression tooth side is engaged with each other, and the spiral torque shoulder screw thread of male member
It is meshed with the spiral torque shoulder screw thread of female component,
The spiral torque shoulder independently obtains resistance to compression and the torsional property of connection.
9. method as claimed in claim 8, wherein, each be respectively provided with outside tapered thread and interior tapered screw thread is connecing
Head assembling when engage to buckle teeth side.
10. method as claimed in claim 8, wherein, the spiral moment of torsion on each in the male member and female component
Shoulder is formed as the continuous shoulder for the multiple rotary body.
11. method as claimed in claim 8, wherein, screw thread or male structure on male member, female component and spiral shoulder
Screw thread on part and female component has substantially the same screw thread form, cone angle and helical pitch.
12. method as claimed in claim 8, wherein, the outside tapered thread and interior tapered screw thread are respectively provided with negative carrying
Tooth side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310394531.9A CN103791181B (en) | 2008-11-04 | 2008-11-04 | The oil field tubular configured joint that compressive property is improved |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200880111519.XA CN101828062B (en) | 2007-09-05 | 2008-11-04 | Oilfield tubular connection with increased compression capacity |
| CN201310394531.9A CN103791181B (en) | 2008-11-04 | 2008-11-04 | The oil field tubular configured joint that compressive property is improved |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880111519.XA Division CN101828062B (en) | 2007-09-05 | 2008-11-04 | Oilfield tubular connection with increased compression capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103791181A CN103791181A (en) | 2014-05-14 |
| CN103791181B true CN103791181B (en) | 2017-09-26 |
Family
ID=50667109
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310394531.9A Expired - Fee Related CN103791181B (en) | 2008-11-04 | 2008-11-04 | The oil field tubular configured joint that compressive property is improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103791181B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016157887A1 (en) * | 2015-03-30 | 2016-10-06 | Ｊｆｅスチール株式会社 | Threaded pipe joint |
| CN108443627A (en) * | 2018-03-30 | 2018-08-24 | 广东管博管道技术科技有限公司 | A kind of flexible sealing self-locking bell socket |
| CN110485944A (en) * | 2019-07-30 | 2019-11-22 | 中海油能源发展股份有限公司 | Introducing-type hammers riser joints |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795200A (en) * | 1986-12-04 | 1989-01-03 | Hydril Company | Lengthened tubular pin member nose for improving sealing integrity and bearing forces |
| US4984688A (en) * | 1989-07-14 | 1991-01-15 | E. I. Du Pont De Nemours & Co. | Film box |
| CA2041346A1 (en) * | 1990-04-27 | 1991-10-28 | Richard W. Delange | Pipe joint |
| US5462315A (en) * | 1992-03-09 | 1995-10-31 | Marubeni Tubulars, Inc. | Stabilized center-shoulder-sealed tubular connection |
| AU8778098A (en) * | 1997-08-11 | 1999-03-01 | Marubeni Tubulars, Inc. | Tubular connection |
| US6832789B2 (en) * | 2002-11-01 | 2004-12-21 | Torquelock Corporation | Threaded pipe connection with cylindrical metal-to-metal, high pressure containment seal |
-
2008
- 2008-11-04 CN CN201310394531.9A patent/CN103791181B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103791181A (en) | 2014-05-14 |
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