CN205908262U - Be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up - Google Patents
Be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up Download PDFInfo
- Publication number
- CN205908262U CN205908262U CN201620827030.4U CN201620827030U CN205908262U CN 205908262 U CN205908262 U CN 205908262U CN 201620827030 U CN201620827030 U CN 201620827030U CN 205908262 U CN205908262 U CN 205908262U
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- female
- male
- shoulder
- tubing
- thread
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Abstract
The utility model provides a be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up, the public tip of this structure be including doublestage male thread, public sealed face, public middle part circular bead, outside public circular bead, female tip is including doublestage box thread, female sealed face and female middle part circular bead, female outer circular bead, connects the in -process mother outside circular bead and public outer circular bead to twist the contact at first twisting, connects the moment of torsion to increase female middle part circular bead to twist the contact with public middle part circular bead along with twisting, twists to connect the moment of torsion to stop upward knot of then completion to satisfy highly resistance moment of torsion and the requirement of gas leakproofness. The beneficial effects are that to API standard threaded connection form, this special screwed joint passes through 13679 (2002) CAL of ISO, IV experimental verifications, and sealing performance's stability is showing and improves, and just can bear higher mistake turns round the moment of torsion. When T1sin alpha + T2 sum between 60%T~80%T the time, the maximum torque value can reach 15000~22000 footpounds, and when T1sin alpha + when the T2 sum was less than 60%T, the maximum torque value was between 8000~10000 footpounds.
Description
Technical field
This utility model is related to a kind of screw connection structure, is mainly used in petroleum industry field, can be used for drilling completion etc.
The integral threaded joint design of the tube upset being applied to tubing and casing of operation.
Background technology
Single oil well pipe is formed by connecting by tubing and casing tubing string using screw thread, and the screw connection point of tubing string is weak key
Link.In general api standard, sleeve pipe adopts round thread or buttress thread type of attachment.The advantage of this joint is technology
Ripe, production cost ratio is relatively low, and shortcoming is that screw thread should undertake linkage function and undertakes sealing function again, and joint stress concentration
Phenomenon is serious.
Get more and more with oil-gas field development under extreme condition, the also more and more higher of the requirement to oil bushing threaded connector, special
Different nipple is in addition to needing the switching performance meet joint in addition it is also necessary to possess good under extreme environment and combined load
Sealing property.
Such as horizontal well, including macrobending angle, alternate load of stretching and compression etc., needs Premium connection to have height
The requirement of torque resistant, and the stability possessing gas sealing ability is also needed in the Special threading connector meeting high torque.
China Patent No. is cn 202689965 u, discloses a kind of airtight sealed tube spiral shell being applied to gas well at HTHP
Stricture of vagina joint, using twin-stage screw thread and be applied to the Special threading connector of special hole condition.
But above patent does not all illustrate how to determine the problem of shoulder thickness, based on be developed for determining main shoulder and
Middle shoulder thickness techniques scheme, to solve the problems, such as high torque resistant and to ensure sealing.
Content of the invention
For the deficiency in structure in prior art, the purpose of this utility model is to provide a kind of pipe being applied to tubing and casing
The integral threaded joint design of end jumping-up, after being beneficial to solution shoulder thickness determination, meets the gentle seal request of high torque
Problem.
For achieving the above object, the technical solution adopted in the utility model is to provide a kind of pipe end upsetting being applied to tubing and casing
Thick integral threaded joint design, this structure includes on the jumping-up pipe end of a tubing and casing male end part of processing and another
The female end part of processing on the jumping-up pipe end of individual tubing and casing, wherein: described male end part includes twin-stage male thread, public sealing
Shoulder, public outer shoulder in the middle part of face, public affairs, it is outer that described female end part includes shoulder, mother in the middle part of twin-stage box thread, female sealing surface and mother
Shoulder, during twist-on, twist-on contacts female outer shoulder at first with male outer shoulder, with shoulder in the middle part of twist-on moment of torsion increase mother with
The shoulder twist-on contact of public middle part, twist-on moment of torsion stops then completing button, and meets high torque resistant and gas tightness requirement: t1/sin
α+t2 >=(60%～80%) t, t1+t2≤(30%～50%) t3.
Effect of the present utility model is for api standard thread type of attachment, and sleeve pipe is susceptible to break in complex hole condition
The inefficacy of form such as split, slip, leaking, huge loss is brought in oil supply field.This Special threading connector passes through iso 13679
(2002) cal verification experimental verification, when the relation between t1, t2, t3 and t meets above-mentioned relation, the stablizing of its sealing property
Property significantly improve, and can bear and higher cross torsion moment of torsion., when t1/sin α+t2 sum exists taking specification 5.5in 23ppf as a example
When between 60%t～80%t, maximum torque can reach 15000～22000 Foot-Pounds, and it is little to work as t1/sin α+t2 sum
When 60%t, maximum torque is between 8000～10000 Foot-Pounds.
Brief description
Fig. 1 is the integral threaded joint design schematic diagram of the tube upset that this utility model is applied to tubing and casing；
Fig. 2 is this utility model sleeve pipe profile of tooth cooperation figure；
After Fig. 3 is button on this utility model special buckle, the schematic diagram of shoulder thickness and angle.
In figure:
1st, female end 2, male end 3, secondary shoulder 4, male and female end sealing surface 5, male and female end screw thread
6th, shoulder 7, male and female outer shoulder 8, box thread 9, male thread in the middle part of male and female
10 axis hp, the high hb of male thread tooth, box thread tooth are high
Outer shoulder thickness t2: the shoulder in the middle part of male and female of t1: male and female
T3: tube upset thickness t: sleeve pipe nominal wall thickness α: male and female between outer land fillet degree
Specific embodiment
In conjunction with accompanying drawing to the integral threaded joint design of the tube upset being applied to tubing and casing of the present utility model in addition
Explanation.
As shown in figure 1, the integral threaded joint design of the tube upset being applied to tubing and casing of the present utility model is, should
Structure includes the mother of processing on the male end 2 of processing on the jumping-up pipe end of a tubing and casing and the jumping-up pipe end of another tubing and casing
End 1, described male end part includes twin-stage male thread 5, public sealing surface 4, public middle part shoulder 6, public outer shoulder 7, described female end portion
Point include twin-stage box thread 5, female sealing surface 4 and female middle part shoulder 6, female outer shoulder 7, the outer shoulder of mother and male during twist-on
The twist-on contact at first of outer shoulder, increases female middle part shoulder with twist-on moment of torsion and contacts with male middle part shoulder twist-on, twist-on moment of torsion stops
Only then complete button, and meet high torque resistant and gas tightness formula requirement:
T1/sin α+t2 >=(60%～80%) t
T1+t2≤(30%～50%) t3
In formula:
Outer shoulder thickness t2: the shoulder thickness in the middle part of male and female of t1: male and female
T3: tube upset thickness t: sleeve pipe nominal wall thickness.
Described twin-stage male and female screw thread is inclined acme thread or barb-shaped screw thread, and the flute profile of inclined acme thread is: the spiral shell of flute profile
Away from for per inch 4～8 tooth, taper is 1:12～1:16, a height of 0.8～1.6mm of male thread tooth, box thread tooth is a height of 0.8～
1.8mm；The flute profile of barb-shaped screw thread is: pitch is per inch 4～8 tooth, and taper is 1:12～1:16, male thread tooth a height of 0.8
～1.6mm, a height of 0.8～1.8mm of box thread tooth.The outer shoulder of described male and female is 45～90 degree with the angle of the axis of tubing and casing,
In the middle part of described male and female, the angle of the axis of shoulder and tubing and casing is 45～90 degree, described male sealing surface and mother's sealing surface and oil jacket
The angle of the axis of pipe is 3～15 degree, and the angle of the described male and female shoulder axis of thread is 45～70 degree.
The integral threaded joint design function of the tube upset being applied to tubing and casing of the present utility model is realized in
:
, when t1/sin α+t2 sum is little taking the api btc button-type of specification 5.5in 23pff and this Special threading connector as a example
When 60%t, the thickness of the outer shoulder of male and female is partially thin, and after screw thread twist-on, to top, the moment of torsion being born reduces the outer shoulder of male and female,
With the increase of moment of torsion, the outer shoulder of male and female is surrendered.
When t1+t2 sum is more than 50%t3 or is less than 30%t3, the male end and female end thickness of screw thread now can be caused
Difference is bigger than normal, can affect the anti-compression properties of integral joint, thus having influence on the sealing property of joint.Regulation grade of steel is 80ksi's
The peak torque of api btc button is 8500～10620 Foot-Pounds, and the peak torque of this Special threading connector can reach
15000～22000 Foot-Pounds, detain for api btc 2 times of torque value, and ensure that the sealing property of this Special threading connector.
Taking tubing and casing design specification 5.5in 23pff as a example:
As shown in Fig. 2 box thread 8, male thread 9 and the axis of thread 10, described inclined acme thread angle load side angle
For 3 degree, introduction side angle is 10 degree, the high hp=1.575mm of male thread tooth, the high hb=1.778mm of box thread tooth, and pitch is
5.08mm, thread taper 1:16, sealing surface is 1:10 along body axis direction taper, wherein male and female between outer land fillet degree and axis side
To for 60 degree, middle part shoulder is 90 degree of right angle shoulders.The wherein outer shoulder thickness t1 of male and female is 4.37mm, and middle part shoulder thickness t2 is
The thickness t3 of 1.79mm, wherein tube upset is 16.7mm, and body nominal wall thickness t is 10.54mm, and male and female between outer land fillet degree is 60
Degree, meets above-mentioned formula and requires.
As shown in figure 3, tubing and casing nominal wall thickness is t, after tube upset, wall thickness is t3, and t1 is the outer shoulder thickness of male and female, t2
For middle shoulder thickness, α is male and female between outer land fillet degree.During screw thread twist-on, need to apply sufficiently large twist-on moment,
The outer shoulder of male and female is made mutually to hold out against and produce a certain amount of interference.This is to ensure that a necessary bar of this joint gas tightness
Part.Under compared with complex hole condition, nipple is needed to have higher anti-torsion ability excessively, the antitorque circular bead surface of this button-type can undertake compared with serious offense
Carry moment of torsion, it is to avoid cause Thread-sticking and sealing face damage phenomenon due to crossing torsion, thus ensureing its sealing property.
Height for ensureing joint is anti-to cross torsion ability, needs to ensure joint under bearing compressive state, the resistance to compression of blank area
Contracting loading end is more than the loading end of body, so formula t1/sin α+t2 >=(60%～80%) t, t1+t2≤(30% should be met
～50%) t3 requires, and could can either ensure the high torque resistant of body, can guarantee that the gas sealing ability under alternate load again.
Claims (5)
1. a kind of integral threaded joint design of the tube upset being applied to tubing and casing, this structure is included in a tubing and casing
On jumping-up pipe end, the male end part of processing and the female end part of processing on the jumping-up pipe end of another tubing and casing, is characterized in that: institute
State male end part and include twin-stage male thread, public sealing surface, public middle part shoulder, public outer shoulder, described female end part includes double
Level box thread, female sealing surface and female middle part shoulder, female outer shoulder, female outer shoulder and male outer shoulder twist-on at first during twist-on
Contact, increases female middle part shoulder with twist-on moment of torsion and contacts with male middle part shoulder twist-on, twist-on moment of torsion stops then completing button, and
Meet high torque resistant and gas tightness requirement:
T1/sin α+t2 >=(60%～80%) t
T1+t2≤(30%～50%) t3
In formula:
Outer shoulder thickness t2: the shoulder thickness in the middle part of male and female of t1: male and female
T3: tube upset thickness t: sleeve pipe nominal wall thickness.
2. the integral threaded joint design of the tube upset being applied to tubing and casing according to claim 1, is characterized in that:
The outer shoulder of described male and female is 45～90 degree with the angle of the axis of tubing and casing.
3. the integral threaded joint design of the tube upset being applied to tubing and casing according to claim 1, is characterized in that:
In the middle part of described male and female, shoulder and the angle of the axis of tubing and casing are 45～90 degree.
4. the integral threaded joint design of the tube upset being applied to tubing and casing according to claim 1, is characterized in that:
Described twin-stage male and female screw thread is inclined acme thread or barb-shaped screw thread, and the flute profile of inclined acme thread is: the pitch of flute profile is every English
Very little 4～8 teeth, taper is 1:12～1:16, a height of 0.8～1.6mm of male thread tooth, a height of 0.8～1.8mm of box thread tooth；Barb
The flute profile of shape screw thread is: pitch is per inch 4～8 tooth, and taper is 1:12～1:16, a height of 0.8～1.6mm of male thread tooth, female
A height of 0.8～the 1.8mm of thread.
5. the integral threaded joint design of the tube upset being applied to tubing and casing according to claim 1, is characterized in that:
Described male sealing surface and female sealing surface are 3～15 degree with the angle of the axis of tubing and casing, the angle of the described male and female shoulder axis of thread
Spend for 45～70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620827030.4U CN205908262U (en) | 2016-07-28 | 2016-07-28 | Be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620827030.4U CN205908262U (en) | 2016-07-28 | 2016-07-28 | Be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205908262U true CN205908262U (en) | 2017-01-25 |
Family
ID=57803858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620827030.4U Withdrawn - After Issue CN205908262U (en) | 2016-07-28 | 2016-07-28 | Be applied to integral screwed joint structure of oily sheathed tube pipe end jumping -up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205908262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168121A (en) * | 2016-07-28 | 2016-11-30 | 天津钢管集团股份有限公司 | It is applied to the integral threaded joint design of the tube upset of tubing and casing |
-
2016
- 2016-07-28 CN CN201620827030.4U patent/CN205908262U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168121A (en) * | 2016-07-28 | 2016-11-30 | 天津钢管集团股份有限公司 | It is applied to the integral threaded joint design of the tube upset of tubing and casing |
| CN106168121B (en) * | 2016-07-28 | 2018-06-29 | 天津钢管集团股份有限公司 | The integral threaded joint structure of tube upset applied to tubing and casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170125 Effective date of abandoning: 20180629 |