CN208870546U - A kind of deep-well and extended reach well tubing string helicitic texture - Google Patents
A kind of deep-well and extended reach well tubing string helicitic texture Download PDFInfo
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- CN208870546U CN208870546U CN201821238814.9U CN201821238814U CN208870546U CN 208870546 U CN208870546 U CN 208870546U CN 201821238814 U CN201821238814 U CN 201821238814U CN 208870546 U CN208870546 U CN 208870546U
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- thread
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- guide surface
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Abstract
The utility model discloses a kind of deep-wells and extended reach well tubing string helicitic texture.It is made of pin end thread segment and female connector thread segment；The male and female joint screw thread section has thread crest, thread loading end, Bottom of Thread and the thread guide surface that threadingly bus is successively alternately continuously arranged；It is tangent or smooth transition that the thread crest, thread loading end, Bottom of Thread and thread guide surface, which are sequentially connected,；It is characterized by: the male and female joint screw thread tooth loading end and thread guide surface are curved surface profile shape.The utility model is compared with prior art, after joint screw thread cooperation, thread contact area is bigger, throat area is threadedly coupled more to increase, the tension torsional property of threaded connection greatly improves, meanwhile, the maximum stress and stress distribution situation of threaded connection can be effectively improved, it also helps drill string make-up and improves make-up speed, be particularly suitable for deep-well and the exploitation of extended reach well petroleum and natural gas.
Description
Technical field
The utility model relates to the oil well pipe tools more particularly to one used in oil and gas exploration and development process
Kind is suitable for the tubing string screw connection structure of deep-well and extended reach well oil and gas exploitation.
Background technique
Oil well pipe tool mentioned in this article includes petroleum casing pipe, oil pipe and drill string component (kelly bar, drilling rod, heavy wall
The drilling tools such as drilling rod, drill collar, crossover sub).
Oil and natural gas drilling industry breaking through always the existing drilling well limit, ultradeep well and extended reach well and
Drilling hole number and depth registration are constantly refreshed.But it is multiple to be equally also faced with drilling condition bad environments, military service drill string force
The problems such as miscellaneous, drillng operation inefficiency, the drill string joints needed, which are threadedly coupled, transmits more pulling force and torque is continuously increased.
In the development of drill string joints thread technology, in order to improve screw thread torsional strength, designer is by the separate unit of API
Shoulder structure changes into dual stage shoulder structure, improves torsional property by increasing a shoulder contact surface, but due to shoulder surface
Thickness be only connector wall thickness sub-fraction, when applying excessively high torque wrench moment, shoulder surface will soon reach modeling
Property critical value.Another solution is that more torques are transmitted in thread, to mitigate the pressure on shoulder surface, and mesh
Most of form of thread that the connection of preceding petroleum drill string thread uses is identical as API standard Design of Screw Thread, i.e., thread loading end and
Thread guide surface is the shape-V thread tooth of plane.This form of thread structure is after the connection of upper button, thread side contacts area
Smaller, screw thread Dental stress concentration is more serious, and the tension torsional property for causing drill string to connect is subject to certain restrictions.
In order to improve the torque capability of joint screw thread connection, patent CN103282708A is devised with raised or sunken shape
The male and female joint screw thread tooth form contour structure of the full curve of shape.But the thread loading end of design and guide surface circular arc half
Diameter is 25mm to 127mm, Bottom of Thread and radius of rounded crest 3mm to 13mm, stone of these parameters for 2 to 13 tooth of per inch
Be for tubing round thread it is very big, thread loading end, guide surface are nearly close to straight outline, thread effective height
It is very small, the effect that arc loading end increases thread contact face can not be played, it is very small for the contribution for connecting torque, especially
It is difficult to the oil and gas exploitation of ultradeep well and extended reach well to provide effective torque demand, while carrying stretching
Under the collective effect of lotus, bending load and high torque load, it is threadedly coupled the hidden danger that there is tripping.
Utility model content
The purpose of this utility model is to provide a kind of deep-wells and extended reach well tubing string helicitic texture, mainly solve above-mentioned
Defect present in the prior art, compared with existing shape-V thread tooth form, after the cooperation of the utility model joint screw thread, screw thread
Centric stop product is bigger, is threadedly coupled throat area and more increases, and the tension torsional property of threaded connection greatly improves, meanwhile,
It can be effectively improved the maximum stress and stress distribution situation of threaded connection, also help drill string make-up and improve make-up speed, especially
It is suitable for deep-wells and extended reach well petroleum and natural gas to exploit.
To realize above-mentioned purpose of utility model, the utility model adopts the following technical solution:
A kind of deep-well and extended reach well tubing string helicitic texture, it is made of pin end thread segment and female connector thread segment,
The pin end thread segment, which has, successively replaces the pin end thread crest being continuously arranged, pin end thread along its screw thread bus
Loading end, pin end Bottom of Thread and pin end thread guide surface；The pin end thread crest, the carrying of pin end thread
It is tangent or smooth transition that face, pin end Bottom of Thread and pin end thread guide surface, which are sequentially connected,；The female connector spiral shell
There is line section the female connector thread crest being successively alternately continuously arranged along its screw thread bus, female connector thread loading end, mother to connect
Head thread tooth bottom and female connector thread guide surface；The female connector thread crest, female connector thread loading end, female connector spiral shell
It is tangent or smooth transition that line tooth bottom and female connector thread guide surface, which are sequentially connected,；It is characterized by: the pin end spiral shell
Line tooth loading end, female connector thread loading end, pin end thread guide surface, female connector thread guide surface are curved surface wheel
Profile shape.
The curved surface profile shape is single arc surface or multiple tangent circle cambered surfaces or elliptical arc surface；For single circular arc camber
When, circular arc radius surface is greater than 1.2mm, is less than 25.0mm；
The pin end thread loading end, female connector thread loading end, pin end thread guide surface, female connector spiral shell
When line tooth guide surface is single circular arc camber, pin end thread loading end, female connector thread loading end arc radius can
To be not equal to pin end thread guide surface, female connector thread guide surface arc radius；
The pin end thread loading end, female connector thread loading end, pin end thread guide surface, female connector spiral shell
When line tooth guide surface is single circular arc camber, pin end thread loading end and female connector thread loading end arc radius are poor
Value range is 0mm~2.54mm, and pin end thread guide surface is with female connector thread guide surface arc radius difference range
0mm~2.54mm；
The pin end Bottom of Thread, female connector Bottom of Thread can choose single arc surface, can choose multiple tangent
Arc surface also can choose the chamfered shape of elliptical arc surface, and when being single circular arc camber, arc radius is greater than 0.15mm, be less than
3mm；
The pin end thread crest, female connector thread crest can choose single arc surface, can choose multiple tangent
Arc surface, can choose elliptical arc surface, also can choose outline of straight line face, and when being single circular arc camber, arc radius is greater than
0.15mm is less than 3mm；
The pin end Bottom of Thread, female connector Bottom of Thread, pin end thread crest, female connector thread crest are list
When a circular arc camber, the circular arc radius surface of pin end Bottom of Thread is less than or equal to the circular arc radius surface of pin end thread crest, female
Joint screw thread tooth bottom circular arc radius surface is less than or equal to female connector thread crest circular arc radius surface；
Through the above technical solutions, utility model has the advantages that
1, male and female joint screw thread sound of baby talk guide surface and screw thread loading end are arc profile, and arc radius is greater than 1.2mm, small
In 25.0mm, compared with prior art, after being threadedly engaged, thread contact area increases 20% or more, is conducive to thread biography
Pass higher torque.
2, pin end thread guide surface and female connector thread guide surface arc radius difference are 0mm~2.54mm, public
Joint screw thread tooth guide surface and female connector thread loading end arc radius difference are 0mm~2.54mm, in this way, detaining on connector
After cooperation, advantageously ensures that and be still in close contact in screw thread odontogenesis elastic-plastic deformation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2-4 is the form of thread detailed view in the particular embodiment of the utility model.
In figure: 1- pin end thread segment；11- pin end thread crest；12- pin end thread loading end；13- public access
Head thread tooth bottom；14- pin end thread guide surface；2- female connector thread segment；21- female connector thread crest；22- female connector spiral shell
Line tooth loading end；23- female connector Bottom of Thread；24- female connector thread guide surface；3- pin end screw thread bus；4- female connector
Screw thread bus.
Specific embodiment
It is described in detail the utility model with reference to the accompanying drawings and examples.
Referring to Fig. 1, it is connected by matching the utility model discloses a kind of deep-well and extended reach well tubing string helicitic texture
The pin end thread segment 1 and female connector thread segment 2 connect is constituted, the male and female joint screw thread section 1,2 have threadingly bus 3,
4 thread crests 11,12 being successively alternately continuously arranged, thread loading end 12,22, Bottom of Thread 13,23 and thread guiding
Face 14,24；
The male and female joint screw thread crest 11,21, thread loading end 12,22, Bottom of Thread 13,23 and thread are led
Be sequentially connected to face 14,24 is tangent or smooth transition；
The characteristics of the utility model, is: the male and female joint screw thread tooth loading end 12,22 and thread guide surface 14,
24 be curved surface profile shape；
In the utility model, the male and female joint screw thread tooth loading end 12,22 and thread guide surface 14,24 are curved surface
Chamfered shape, the curved surface profile shape can choose single arc surface, can choose multiple tangent circle cambered surfaces, also can choose ellipse
Arc surface, when being single circular arc camber, arc radius is greater than 1.2mm, is less than 25.0mm；
In the utility model, the male and female joint screw thread tooth loading end 12,22 and thread guide surface 14,24 are single
When circular arc camber, thread loading end 12,22 arc radius can be not equal to thread guide surface 14,24 arc radius；
In the utility model, the male and female joint screw thread tooth loading end 12,22 and thread guide surface 14,24 are single
When circular arc camber, male and female joint screw thread tooth loading end 12,22 arc radius difference ranges are 0mm~2.54mm, male and female connector
Thread guide surface 14,24 arc radius difference ranges are 0mm~2.54mm, in this way, it is advantageously ensured that snap fit is closed on connector
Afterwards, it is still in close contact when screw thread odontogenesis elastic-plastic deformation；
In the utility model, the male and female joint screw thread tooth bottom 13,23 can choose single arc surface, can choose more
A tangent circle cambered surface, also can choose the chamfered shape of elliptic arc, and when being single circular arc camber, arc radius is greater than 0.15mm,
Less than 3mm；
In the utility model, the male and female joint screw thread crest 11,21 can choose single arc surface, can choose more
A tangent circle cambered surface, can choose elliptical arc surface, also can choose outline of straight line face, when being single circular arc camber, arc radius
Greater than 0.15mm, it is less than 3mm；
In the utility model, the male and female joint screw thread tooth bottom 13,23 and thread crest 11,21 are single circular arc camber
When, Bottom of Thread 13,23 arc radius are less than or equal to thread crest 11,21 arc radius, in this way, it is advantageously ensured that thread crest
Have enough gaps with tooth bottom, when shackle screws on joint screw thread, to thread deformation and thread compound flowing storage there are
Space, connector will not be stuck；
In the utility model, referring to Fig. 2, when the male and female joint screw thread crest 11,21 is outline of straight line, thread
It pushes up 11,21 straight lines and screw thread bus 3,4 angles is -15 ° to 15 °, it is advantageously ensured that there are enough gaps at thread crest and tooth bottom,
When shackle screws on joint screw thread, to thread deformation and thread compound flowing storage there are space, connector will not be stuck, together
When, when thread crest straight line and screw thread bus clip angle are -15 °, connect, can reduce for being primarily subjected to the biggish tubing string of pulling force
Thread guide surface is conducive to improve make-up speed, reduces thread crest abrasion；When thread crest straight line and screw thread bus clip angle
It is 15 °, is connected for being primarily subjected to the biggish tubing string of pressure, thread guide surface can be increased, improve screw thread bearing capacity.
In the utility model, referring to Fig. 3, since torque of the thread guide surface 14,24 for threaded connection transmits energy
Power contribution is smaller, and male and female joint screw thread tooth guide surface 14,24 can choose outline of straight line face, and inheriting tradition joint technique is mature,
And the advantage of processing and inspection simplicity；
In the utility model, referring to Fig. 4, compared with traditional shape-V thread tooth form, in thread taper, screw pitch, screw thread
In the identical situation of the parameters such as radius of rounded root, tooth bottom and the middle line distance L2 of the curved surface form of thread of the utility model
Less than traditional shape-V thread tooth form and middle line distance L1, i.e. threaded connection throat area increases, this, which is conducive to improve, connects
The tension torsional property of head connection；
Analysis of finite element by numerical simulation is utilized in conjunction with the design of drill of certain big displacement ultradeep well using the above implementation parameter
It was found that the joint screw thread of the utility model bear stretch, bending and 60% surrender torque load under the action of, joint screw thread tooth
Upper maximum equivalent is 815MPa, and maximum equivalent is 618MPa, not up to material critical yield stress on shoulder, and is answered
Power distributes very evenly；And the dual stage shoulder grafting head thread under same operating loading, maximum equivalent is on joint screw thread tooth
921MPa, maximum equivalent is 769MPa on shoulder, and the stress on thread has been over material critical yield stress.With
The prior art compares, and not only greatly improves the tensile strength being threadedly coupled and torsional strength in the utility model, can also have
Effect improves the maximum stress being threadedly coupled and stress distribution situation.
Claims (6)
1. a kind of deep-well and extended reach well tubing string helicitic texture, it is by pin end thread segment (1) and female connector thread segment (2) structure
At the pin end thread segment (1) has the pin end thread crest being successively alternately continuously arranged along its screw thread bus (3)
(11), pin end thread loading end (12), pin end Bottom of Thread (13) and pin end thread guide surface (14)；The public affairs
Joint screw thread crest (11), pin end thread loading end (12), pin end Bottom of Thread (13) and pin end thread guiding
It is tangent or smooth transition that face (14), which is sequentially connected,；The female connector thread segment (2) has successively hands over along its screw thread bus (4)
For female connector thread crest (21), female connector thread loading end (22), female connector Bottom of Thread (23) and the mother being continuously arranged
Joint screw thread tooth guide surface (24)；The female connector thread crest (21), female connector thread loading end (22), female connector screw thread
It is tangent or smooth transition that tooth bottom (23) and female connector thread guide surface (24), which are sequentially connected,；It is characterized by: the public affairs
Joint screw thread tooth loading end (12), female connector thread loading end (22), pin end thread guide surface (14), female connector screw thread
Tooth guide surface (24) is curved surface profile shape.
2. a kind of deep-well according to claim 1 and extended reach well tubing string helicitic texture, it is characterised in that: the curved surface wheel
Profile shape is single arc surface or multiple tangent circle cambered surfaces or elliptical arc surface；When for single circular arc camber, circular arc radius surface is greater than
1.2mm is less than 25.0mm.
3. a kind of deep-well according to claim 2 and extended reach well tubing string helicitic texture, it is characterised in that: the public access
Head thread tooth loading end (12), female connector thread loading end (22), pin end thread guide surface (14), female connector thread
When guide surface (24) is single circular arc camber, pin end thread loading end (12) and female connector thread loading end (22) circle
Arc radius difference range is 0mm~2.54mm, pin end thread guide surface (14) and female connector thread guide surface (24) circle
Arc radius difference range is 0mm~2.54mm.
4. a kind of deep-well according to claim 1 and extended reach well tubing string helicitic texture, it is characterised in that: the public access
Head thread tooth bottom (13), female connector Bottom of Thread (23) select the wheel of single arc surface or multiple tangent circle cambered surfaces or elliptical arc surface
Profile shape；When pin end Bottom of Thread (13), female connector Bottom of Thread (23) are single circular arc camber, arc radius is greater than
0.15mm is less than 3mm.
5. a kind of deep-well according to claim 4 and extended reach well tubing string helicitic texture, it is characterised in that: the public access
Head thread crest (11), female connector thread crest (21) select single arc surface or multiple tangent circle cambered surfaces or elliptical arc surface or straight
Line wheel profile surface, when pin end thread crest (11), female connector thread crest (21) are single circular arc camber, arc radius is greater than
0.15mm is less than 3mm.
6. a kind of deep-well according to claim 5 and extended reach well tubing string helicitic texture, it is characterised in that: the public access
Head thread tooth bottom (13), female connector Bottom of Thread (23), pin end thread crest (11), female connector thread crest (21) are list
When a circular arc camber, the circular arc radius surface of pin end Bottom of Thread (13) is less than or equal to the arc surface of pin end thread crest (11)
Radius, female connector Bottom of Thread (23) circular arc radius surface are less than or equal to female connector thread crest (21) circular arc radius surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821238814.9U CN208870546U (en) | 2018-08-02 | 2018-08-02 | A kind of deep-well and extended reach well tubing string helicitic texture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821238814.9U CN208870546U (en) | 2018-08-02 | 2018-08-02 | A kind of deep-well and extended reach well tubing string helicitic texture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208870546U true CN208870546U (en) | 2019-05-17 |
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ID=66463920
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821238814.9U Active CN208870546U (en) | 2018-08-02 | 2018-08-02 | A kind of deep-well and extended reach well tubing string helicitic texture |
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| CN (1) | CN208870546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329239A (en) * | 2023-11-08 | 2024-01-02 | 青岛银菲特精密机械有限公司 | Axial positioning structure of rotary mechanical part |
-
2018
- 2018-08-02 CN CN201821238814.9U patent/CN208870546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329239A (en) * | 2023-11-08 | 2024-01-02 | 青岛银菲特精密机械有限公司 | Axial positioning structure of rotary mechanical part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190708 Address after: 201908 Luodong Road, Baoshan District, Shanghai, 1825-1 Co-patentee after: Shanghai Hailong Petroleum Pipe Material Institute Patentee after: Shanghai Hilong Drill Pipe Co., Ltd. Address before: No. 1825 Luodong Road, Baoshan District, Shanghai, 2010 Patentee before: Shanghai Hailong Petroleum Pipe Material Institute |
|
| TR01 | Transfer of patent right |