CN107762425A - A kind of oil pipe thread attachment structure - Google Patents
A kind of oil pipe thread attachment structure Download PDFInfo
- Publication number
- CN107762425A CN107762425A CN201711039265.2A CN201711039265A CN107762425A CN 107762425 A CN107762425 A CN 107762425A CN 201711039265 A CN201711039265 A CN 201711039265A CN 107762425 A CN107762425 A CN 107762425A
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- CN
- China
- Prior art keywords
- screw thread
- tooth
- thread
- equal
- becomes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The present invention provides a kind of oil pipe thread attachment structure, the external screw thread of all engagements and internal thread are complete thread in male connection and female adapter, incomplete screw thread is avoided to bear to stretch, compression, bending, the problem of reversing with sealability difference, the external screw thread of all engagements and internal thread are complete thread in screw connection structure, all external screw thread tooth tops after engagement are in close contact gapless with internal thread bottom of the tooth and all external screw thread bottom of the tooth with internal thread tooth top, screw connection structure after engagement both ensure that structural intergrity, it in turn ensure that sealing integrity, combination property after internal and external threads connection obtains big raising.
Description
Technical field
The present invention relates to oil drilling, exploitation and production field, more particularly to a kind of oil pipe thread attachment structure.
Background technology
API (American Petroleum Institute, American Petroleum Institute (API)) buttress threads are axially drawn due to anti-
Stretch and resist the ability of being compressed axially strong and be also in petroleum industry extensive use, current its screw thread form of substantial amounts of Special threading connector
Based on API buttress threads improve come.When the partially trapezoidal pipe screw threads of API engage, the high complete thread of the teeth such as internal thread is, outer spiral shell
For a line part to wait high complete thread of tooth, the external screw thread for separately having nearly half length is incomplete screw thread, after internal and external threads engagement
Reduce nipple because incomplete screw thread position has larger spiral shape space and bear to stretch, compress, bend, reverse
With the ability of sealing.Although Special threading connector, due to the presence of incomplete screw thread, is connect using the partially trapezoidal pipe screw thread of modified
Head performance needs further to be improved.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of oil pipe thread attachment structure, uses
Full complete thread improves the ability that nipple bears to stretch, compress, bend, reverse and seal.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions：
A kind of oil pipe thread attachment structure, including the male connection and female adapter being assembled together；External screw thread
The external screw thread of all engagements and internal thread are complete thread in joint and female adapter.
Further, the screw thread of male connection includes the high screw threads of tooth such as the high screw thread of external screw thread change tooth and external screw thread；Internal thread
The screw thread of joint includes internal thread and becomes the high screw threads of tooth such as the high screw thread of tooth and internal thread；External screw thread becomes the high screw thread of tooth and becomes tooth with internal thread
The high screw thread pairing of the teeth such as the high screw thread of tooth and internal thread such as high screw thread pairing, external screw thread.
Further, the external screw thread of male connection becomes the middle line of the high screw threads of tooth such as middle line and the external screw thread of the high screw thread of tooth
Overlap；Addendum line, bottom of the tooth line and the middle line that external screw thread becomes the high screw thread of tooth intersect at outer surface of tube body；External screw thread becomes the high screw thread of tooth
Screw thread outside pitch line length and bottom of the tooth it is highly equal, outside pitch line length and bottom of the tooth height change to maximum from zero linear.
Further, the screw thread outside pitch line length of the high screw thread of the tooth such as external screw thread of male connection and bottom of the tooth are highly equal, tooth top
The maximum height of teeth top that height becomes the high screw thread of tooth with external screw thread is equal, and the maximum tooth bottom that bottom of the tooth height becomes the high screw thread of tooth with external screw thread is high
It is equal；The facewidth and space width of the external screw thread change high screw thread of tooth are equal, and the facewidth and space width of the high screw thread of the tooth such as external screw thread are equal, outside
Screw thread become the high screw thread of tooth the facewidth and space width it is equal with the facewidth and space width of the high screw thread of tooth such as external screw thread respectively.
Further, the internal thread of female adapter becomes the middle line of the high screw threads of tooth such as middle line and the internal thread of the high screw thread of tooth
Overlap；Addendum line, bottom of the tooth line and the middle line that internal thread becomes the high screw thread of tooth intersect at a point；Internal thread becomes the screw thread of the high screw thread of tooth
Outside pitch line length and bottom of the tooth are highly equal, and outside pitch line length and bottom of the tooth height change to maximum from zero linear.
Further, the screw thread outside pitch line length of the high screw thread of the tooth such as internal thread of female adapter and bottom of the tooth are highly equal, tooth top
The maximum height of teeth top that height becomes the high screw thread of tooth with internal thread is equal, and the maximum tooth bottom that bottom of the tooth height becomes the high screw thread of tooth with internal thread is high
It is equal；The facewidth and space width of the internal thread change high screw thread of tooth are equal, and the facewidth and space width of the high screw thread of the tooth such as internal thread are equal, interior
Screw thread become the high screw thread of tooth the facewidth and space width it is equal with the facewidth and space width of the high screw thread of tooth such as internal thread respectively.
Further, external screw thread becomes the length and the tooth such as equal length, external screw thread of the internal thread change high screw thread of tooth of the high screw thread of tooth
The length of high screw thread is less than the length of the high screw threads of tooth such as internal thread；The outside pitch line length and bottom of the tooth of the high screw thread of the teeth such as external screw thread are highly divided
It is inequal with the thread bottom height and outside pitch line length of the high screw thread of tooth such as internal thread；The screw thread facewidth and space width of male connection
It is equal with the screw thread space width and the facewidth of female adapter respectively.
Further, the screw thread form of male connection and the screw thread form of female adapter are identical, and screw thread form is partially terraced
Shape screw thread.
The beneficial effects of the invention are as follows：
The present invention oil pipe thread attachment structure, in male connection and female adapter the external screw thread of all engagements and
Internal thread is complete thread, avoids incomplete screw thread and bears to stretch, compress, bend, reversing and the problem of sealability difference,
The external screw thread of all engagements and internal thread are complete thread in screw connection structure, all external screw thread tooth tops after engagement with it is interior
Thread bottom and all external screw thread bottom of the tooth are in close contact gapless with internal thread tooth top, and the screw connection structure after engagement was both
Structural intergrity is ensure that, in turn ensure that sealing integrity, the combination property after internal and external threads connection obtains big raising.
Brief description of the drawings
Fig. 1 is a kind of oil pipe thread attachment structure assembling schematic diagram
Fig. 2 is male connection schematic diagram
Fig. 3 is female adapter schematic diagram
Wherein：1- male connections；2- female adapters；3- external screw threads become the high screw thread of tooth；The high screw thread of the teeth such as 4- external screw threads；
5- internal threads become the high screw thread of tooth；The high screw thread of the teeth such as 6- internal threads.
P- internal and external threads middle lines；L1- external screw threads become the high reach of tooth or internal thread becomes the high reach of tooth；Outside L2-
The high reach of the teeth such as screw thread；The high reach of the teeth such as L3- internal threads；P1- external screw threads become the high screw thread addendum line of tooth；The outer spiral shells of P2-
Line becomes the high thread bottom line of tooth；The high screw thread addendum line of the teeth such as P3- external screw threads；The high thread bottom line of the teeth such as P4- external screw threads；In m1-
Screw thread becomes the high thread bottom line of tooth；M2- internal threads become the high screw thread addendum line of tooth；The high thread bottom line of the teeth such as m3- internal threads；m4-
The high screw thread addendum line of the teeth such as internal thread.
Embodiment
With reference to specific embodiment, the present invention will be further described, the embodiment provided only for illustrating the present invention,
The scope being not intended to be limiting of the invention.
As Figure 1-3, oil pipe thread attachment structure of the invention includes the male connection 1 that is assembled together and interior
Nipple 2, the external screw thread of all engagements and internal thread are complete thread in the structure.
The screw thread of male connection 1 includes external screw thread and becomes the high screw threads 4 of tooth such as the high screw thread 3 of tooth and external screw thread；External screw thread becomes tooth
The middle line of the high screw thread 4 of the teeth such as the middle line and external screw thread of high screw thread 3 overlaps；External screw thread becomes addendum line P1, the tooth of the high screw thread 3 of tooth
Bottom line P2 and middle line P intersect at outer surface of tube body；External screw thread becomes the screw thread outside pitch line length and bottom of the tooth height phase of the high screw thread 3 of tooth
Maximum is changed to Deng, outside pitch line length and bottom of the tooth height from zero linear；The screw thread outside pitch line length and tooth of the high screw thread 4 of the teeth such as external screw thread
Bottom is highly equal, and the maximum height of teeth top that outside pitch line length becomes the high screw thread 3 of tooth with external screw thread is equal, and bottom of the tooth height becomes tooth height with external screw thread
The maximum tooth bottom height of screw thread 3 is equal；The facewidth and space width of the external screw thread change high screw thread 3 of tooth are equal, the high screw thread 4 of the tooth such as external screw thread
The facewidth and space width are equal, and external screw thread becomes the facewidth and the space width facewidth with the high screw thread 4 of tooth such as external screw thread respectively of the high screw thread 3 of tooth
It is equal with space width.
The screw thread of female adapter 2 includes internal thread and becomes the high screw threads 6 of tooth such as the high screw thread 5 of tooth and internal thread；Internal thread becomes tooth
The middle line of the high screw thread 6 of the teeth such as the middle line and internal thread of high screw thread 5 overlaps；Internal thread becomes tooth top bottom m1, the tooth of the high screw thread 5 of tooth
Top line m2 and middle line P intersect at a point；The screw thread outside pitch line length and bottom of the tooth of the internal thread change high screw thread 5 of tooth are highly equal, tooth top
Height and bottom of the tooth height change to maximum from zero linear；Screw thread outside pitch line length and the bottom of the tooth height of the high screw thread 6 of the teeth such as internal thread
Equal, the maximum height of teeth top that outside pitch line length becomes the high screw thread 5 of tooth with internal thread is equal, and bottom of the tooth height becomes the high screw thread 5 of tooth with internal thread
Maximum tooth bottom height it is equal；The facewidth and space width of the internal thread change high screw thread 5 of tooth are equal, the facewidth of the high screw thread 6 of the tooth such as internal thread
Equal with space width, internal thread becomes the facewidth and the space width facewidth and tooth with the high screw thread 6 of tooth such as internal thread respectively of the high screw thread 5 of tooth
Groove width is equal.
External screw thread becomes the length and the high screw thread of the tooth such as equal length, external screw thread of the internal thread change high screw thread 5 of tooth of the high screw thread 3 of tooth
4 length is less than the length of the high screw threads 6 of tooth such as internal thread；The outside pitch line length and bottom of the tooth of the high screw thread 4 of the teeth such as external screw thread are highly respectively
It is equal with the thread bottom height and outside pitch line length of the high screw thread 6 of tooth such as internal thread；The screw thread facewidth and space width of male connection 1
It is equal with the screw thread space width and the facewidth of female adapter 2 respectively.
The screw thread form of male connection 1 is identical with the screw thread form of female adapter 2, and screw thread form is partially trapezoidal spiral shell
Line.
As described above, embodiments of the invention are explained, as long as but essentially without this hair of disengaging
Bright inventive point and effect can have many deformations, and this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (7)
- A kind of 1. oil pipe thread attachment structure, it is characterised in that：Connect including the male connection being assembled together and internal thread Head；The external screw thread of all engagements and internal thread are complete thread in male connection and female adapter；The screw thread of male connection (1) includes external screw thread and becomes the high screw threads of tooth (4) such as the high screw thread of tooth (3) and external screw thread；Internal thread connects The screw thread of head (2) includes internal thread and becomes the high screw threads of tooth (6) such as the high screw thread of tooth (5) and internal thread；External screw thread become the high screw thread of tooth (3) with Internal thread becomes the high screw thread of the tooth such as the high screw thread of tooth (4) and internal thread (6) pairing such as the high screw thread of tooth (5) pairing, external screw thread.
- 2. oil pipe thread attachment structure according to claim 1, it is characterised in that：The external screw thread of male connection (1) The middle line for becoming the high screw threads of tooth (4) such as middle line and the external screw thread of the high screw thread of tooth (3) overlaps；External screw thread becomes the high screw thread of tooth (3) Addendum line (P1), bottom of the tooth line (P2) and middle line (P) intersect at outer surface of tube body；External screw thread becomes the thread of the high screw thread of tooth (3) Heights of roofs and bottom of the tooth are highly equal, and outside pitch line length and bottom of the tooth height change to maximum from zero linear.
- 3. oil pipe thread attachment structure according to claim 1, it is characterised in that：The external screw thread of male connection (1) Screw thread outside pitch line length and bottom of the tooth Deng the high screw thread of tooth (4) is highly equal, and outside pitch line length becomes the maximum of the high screw thread of tooth (3) with external screw thread Height of teeth top is equal, and the maximum tooth bottom height that bottom of the tooth height becomes the high screw thread of tooth (3) with external screw thread is equal；External screw thread becomes the high screw thread of tooth (3) The facewidth and space width it is equal, the facewidth and space width of the high screw thread of the tooth such as external screw thread (4) are equal, external screw thread become the high screw thread of tooth (3) The facewidth and space width it is equal with the facewidth and space width of the high screw thread of tooth (4) such as external screw thread respectively.
- 4. a kind of oil pipe thread attachment structure as claimed in claim 1 is characterized in that：The internal thread of female adapter (2) The middle line for becoming the high screw threads of tooth (6) such as middle line and the internal thread of the high screw thread of tooth (5) overlaps；Internal thread becomes the high screw thread of tooth (5) Bottom of the tooth line (m1), addendum line (m2) and middle line (P) intersect at a point；Internal thread becomes the screw thread outside pitch line length of the high screw thread of tooth (5) Highly equal with bottom of the tooth, outside pitch line length and bottom of the tooth height change to maximum from zero linear.
- 5. a kind of oil pipe thread attachment structure as claimed in claim 4 is characterized in that：The internal thread of female adapter (2) Screw thread outside pitch line length and bottom of the tooth Deng the high screw thread of tooth (6) is highly equal, and outside pitch line length becomes the maximum of the high screw thread of tooth (5) with internal thread Height of teeth top is equal, and the maximum tooth bottom height that bottom of the tooth height becomes the high screw thread of tooth (5) with internal thread is equal；Internal thread becomes the high screw thread of tooth (5) The facewidth and space width it is equal, the facewidth and space width of the high screw thread of the tooth such as internal thread (6) are equal, internal thread become the high screw thread of tooth (5) The facewidth and space width it is equal with the facewidth and space width of the high screw thread of tooth (6) such as internal thread respectively.
- 6. a kind of oil pipe thread attachment structure as described in claim any one of 1-5 is characterized in that：It is high that external screw thread becomes tooth The length for the high screw thread (4) of the tooth such as equal length, external screw thread that the length of screw thread (3) becomes the high screw thread of tooth (5) with internal thread is less than interior The length of the high screw thread of the teeth such as screw thread (6)；Outside pitch line length and the bottom of the tooth height of the high screw thread of the teeth such as external screw thread (4) are respectively with internal thread etc. The thread bottom height of the high screw thread of tooth (6) is equal with outside pitch line length；The screw thread facewidth and space width of male connection (1) respectively with The screw thread space width and the facewidth of female adapter (2) are equal.
- 7. a kind of oil pipe thread attachment structure as described in claim any one of 1-5 is characterized in that：Male connection (1) Screw thread form it is identical with the screw thread form of female adapter (2), screw thread form is buttress thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039265.2A CN107762425B (en) | 2017-10-30 | 2017-10-30 | A kind of oil pipe thread connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039265.2A CN107762425B (en) | 2017-10-30 | 2017-10-30 | A kind of oil pipe thread connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762425A true CN107762425A (en) | 2018-03-06 |
| CN107762425B CN107762425B (en) | 2019-09-03 |
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ID=61271852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711039265.2A Active CN107762425B (en) | 2017-10-30 | 2017-10-30 | A kind of oil pipe thread connection structure |
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| Country | Link |
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| CN (1) | CN107762425B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027353A (en) * | 2021-02-22 | 2021-06-25 | 天津钢管制造有限公司 | Method for designing buttress thread type thread of petroleum casing pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628707Y (en) * | 2003-06-27 | 2004-07-28 | 宝山钢铁股份有限公司 | Oil well pipe screwed joints |
| CN102943633A (en) * | 2012-10-10 | 2013-02-27 | 中国石油天然气集团公司 | Threaded connection structure |
| CN202954751U (en) * | 2012-11-28 | 2013-05-29 | 宝山钢铁股份有限公司 | Thread casing pipe connector capable of being quickly screwed on and screwed off |
| CN105927167A (en) * | 2016-06-21 | 2016-09-07 | 西南石油大学 | Special-thread gas seal oil sleeve joint for ultra-deep wells |
| US20170167641A1 (en) * | 2015-12-11 | 2017-06-15 | Vallourec Oil And Gas France | Threaded connection including an intermediate shoulder |
-
2017
- 2017-10-30 CN CN201711039265.2A patent/CN107762425B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628707Y (en) * | 2003-06-27 | 2004-07-28 | 宝山钢铁股份有限公司 | Oil well pipe screwed joints |
| CN102943633A (en) * | 2012-10-10 | 2013-02-27 | 中国石油天然气集团公司 | Threaded connection structure |
| CN202954751U (en) * | 2012-11-28 | 2013-05-29 | 宝山钢铁股份有限公司 | Thread casing pipe connector capable of being quickly screwed on and screwed off |
| US20170167641A1 (en) * | 2015-12-11 | 2017-06-15 | Vallourec Oil And Gas France | Threaded connection including an intermediate shoulder |
| CN105927167A (en) * | 2016-06-21 | 2016-09-07 | 西南石油大学 | Special-thread gas seal oil sleeve joint for ultra-deep wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027353A (en) * | 2021-02-22 | 2021-06-25 | 天津钢管制造有限公司 | Method for designing buttress thread type thread of petroleum casing pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107762425B (en) | 2019-09-03 |
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