CN108625797A - A kind of hermetic sealing drill pipe joint preventing reversion shackle - Google Patents
A kind of hermetic sealing drill pipe joint preventing reversion shackle Download PDFInfo
- Publication number
- CN108625797A CN108625797A CN201710171218.7A CN201710171218A CN108625797A CN 108625797 A CN108625797 A CN 108625797A CN 201710171218 A CN201710171218 A CN 201710171218A CN 108625797 A CN108625797 A CN 108625797A
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- China
- Prior art keywords
- face
- level
- female connector
- sealing
- shoulder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 239000011324 bead Substances 0.000 claims description 24
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012360 testing method 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
- E21B17/043—Threaded with locking means
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)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of hermetic sealing drill pipe joints preventing reversion shackle, include the pin end (1) being tightly connected by taper pipe thread (8) and female connector (2), the groove (16) for adjoining the female connector (2) end face is additionally provided in the outside wall surface of the pin end (1), it is also installed with the end face for abutting the female connector (2) in groove (16), and radially locks the closing piece (3) of the female connector (2).Compared with prior art, the present invention can effectively prevent the phenomenon that releases in reversion, while can also be by the seal form of setting waveform sealing surface and sealing cone, and formation is multi-stage sealed, improves the sealing performance of connector.
Description
Technical field
The present invention relates to a kind of drill pipe tool joints, more particularly, to a kind of hermetic seal drilling rod connecting preventing reversion shackle
Head.
Background technology
Tool joint is used for the connection between drilling rod, it includes the parts such as taper pipe thread, torque shoulder, production at present and inspection
The standard for testing foundation is mainly API SPEC 7.7 tool joint threads of API SPEC are referred to as " connection of rotation shoulder ", are oil
It drills industry and connects the most important mechanical mechanism of drill string component.This taper pipe thread has compensates linking part by axial displacement
The characteristics of point diameter error, thus interchangeability degree is high, be tightly combined and assemble and disassemble it is easy.Its technical characterstic is Taper Pipe spiral shell made in Great Britain
Line has shoulder connection, triangle thread, using extremely wide in tubing connection.
API drill rod threaded nipples meet the requirement of oil drilling within considerable time, but with drilling technology
Development and exploit the increase of difficulty, under current drilling condition, most wellbores be no longer it is vertical, it is inclined shaft, horizontal well, big
The application of displacement well is more and more, made higher requirement to intensity, toughness, the sealability of drilling rod.Tool joint is
The weak link of entire drill string, therefore the requirement to tool joint also improves simultaneously.For example, under complex hole condition, drilling rod encounters
Bad ground and block, continue drilling can be more than tool joint anti-twisting property, need invert unfreezing, but drilling rod reversion again be easy
Cause connector shackle.This requires develop the better connector of performance.
In order to improve the sealability of tool joint, the national oil well company in French Wa Mu companies and the U.S. develops gas
Sealing drilling rod connector can seal up the external pressure of the internal pressure and 10000psi (about 70MPa) of 15000psi (about 100MPa), the skill
Art and application is achieved in marine drilling.
In order to improve the anti-twisting property of drilling rod, lot of domestic and international producer develops dual stage shoulder anti-twisting drill pipe joint.Such as GRANT
On the one hand the products such as HT, Hilong HT, this connector improve joint structure：Increase a torque shoulder or changes simultaneously spiral shell
Line taper improves connector anti-twisting property；On the other hand, the yield limit of joint material is improved, such as current API series drilling rod intensity
Highest is S135 grades, and oil field needs V150 grades even V170 grades of drilling rod to provide the power of bigger at present, meets oil and surveys
The drilling well for visiting ultradeep well needs.But increasing drilling rod intensity simply, there are technical difficulties, and cost is also significantly increased, so
The Technique Popularizing acquires a certain degree of difficulty.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind preventing reversion shackle
Hermetic sealing drill pipe joint.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of hermetic sealing drill pipe joint preventing reversion shackle, includes the pin end being tightly connected by taper pipe thread and mother
Connector is additionally provided with the groove for adjoining the female connector end face in the outside wall surface of the pin end, the also fixed peace in groove
Equipped with the abutting shoulder of the box, and radially lock the closing piece of the female connector.Pin end and female connector are additionally by lock
When block locking, unfreezing " operation reversion drilling rod, closing piece is remarkably improved shackle resistance, prevents connector from loosening.
The taper pipe thread includes being respectively arranged on the outer cone being mutually matched on pin end outside wall surface and female connector internal face
Screw thread and inside tapered thread, the pin end outside wall surface are respectively equipped with main circular bead surface and small end face, institute at the both ends of outer cone thread
The female connector internal face stated is equipped with secondary shoulder in one end of inside tapered thread, and the other end is large end face, wherein the main circular bead surface
Adjoin the groove, and matches secondary shoulder in sealing contact, described with large end face and the small end face is in sealing contact.Taper pipe thread
The fit system of the main circular bead surface-large end face at both ends, secondary circular bead surface-small end face so that effect of its both ends in connector pressing force
Achievable metal to metal seal down.
As preferred embodiment, one section and the inside tapered thread gradient are additionally provided between the large end face and inside tapered thread
Consistent inclined wall, is additionally provided with seal groove between the main circular bead surface and outer cone thread, pin end and female connector sealing connect
When connecing, also interference fit is provided with sealing ring in the seal groove.The setting of seal groove and sealing ring can effectively prevent pipe
Fluid intrusion outside road.
Embodiment more preferably, the small end face include along the level-one end face that pin end is radially arranged and two level
End face, and transition is provided with external seal face between level-one end face and two level end face,
The secondary circular bead surface includes level-one shoulder and two level shoulder, is equipped between level-one shoulder and two level shoulder interior close
Cover, wherein the level-one shoulder matches connection with level-one end face, and the two level shoulder matches connection with two level end face, described
External seal face contact to form airtight cover with inner sealing surface.The setting of the small end face of such form and secondary circular bead surface can be effective
Ensure that sealing is locked, prevents tube fluid from flowing out.
As embodiment even more preferably, the external seal face is waveform sealing surface, the interior sealing
Face is conical seal (contact) face identical with waveform sealing surface taper；
After being detained on pin end and female connector, formed between the wave crest and conical seal (contact) face of waveform sealing surface multi-stage sealed.
After being detained on pin end and female connector, the contact surface generation bullet for making the two with credit union of waveform sealing surface and conical seal (contact) face
Plastic deformation generates contact stress, further ensure that sealing effect.
As the preferred of above-mentioned further embodiment, formed between the trough and sealing surface of waveform sealing surface
Also storage has lubrication thread compound in gap.
As the preferred of above-mentioned further embodiment, wave crest there are four processing on the waveform sealing surface,
Level Four sealing surface is formed between the wave crest and conical seal (contact) face.
As preferred embodiment, the closing piece is equipped with polylith, and every piece is all made of screw and is fixed in the groove.
As preferred embodiment, the closing piece is equipped with saw tooth belt in the side contacted with shoulder of the box.
Compared with prior art, the present invention has the following advantages：
(1) setting of closing piece can effectively prevent the phenomenon that releases, meanwhile, and will not excessively increase the device of joint structure
Complexity.
(2) in the main circular bead surface-large end face at taper pipe thread both ends, secondary circular bead surface-small end face sets for pin end and female connector
Mode is set, not only ensure that the intrusion of extratubal fluid, meanwhile, waveform sealing surface can form multistage dense with conical seal (contact) face
Envelope, improves the sealing performance of connector.
Description of the drawings
Fig. 1 is the axial sectional diagrammatical view illustration after being detained in the present invention；
Fig. 2 is the explosion connection diagram of the pin end and female connector of the present invention；
Fig. 3 is the enlarged diagram of the small end face of pin end；
Fig. 4 is the enlarged diagram of the secondary circular bead surface of female connector；
Fig. 5 is the schematic top plan view of closing piece；
In figure, 1- pin ends, 2- female connectors, 3- closing pieces, 4- screws, 5- sealing rings, 6- waveform sealing surfaces, 7- tapers are close
Cover, 8- taper pipe threads, 9- outer cone threads, 10- inside tapered threads, 11- pair circular bead surfaces, 12- small end faces, 13- large end faces, 14- master
Circular bead surface, 15- seal grooves, 16- grooves, 17- level-ones end face, 18- two levels end face, 19- level-one shoulders, 20- two level shoulders, 21-
Primary peak, 22- secondary peaks, 23- third wave crests, the 4th wave crests of 24-.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Fig. 1~Fig. 2, a kind of hermetic sealing drill pipe joint preventing reversion shackle, by the public access with outer cone thread 9
First 1 and female connector 2 with inside tapered thread 10 form, pin end 1 and female connector 2 are connected by taper pipe thread 8.
Pin end 1 includes outer cone thread 9, small end face 12, main circular bead surface 14, seal groove 15, adjacent with main circular bead surface 14
Three equally distributed grooves 16 for being used for placing closing piece 3.Female connector 2 includes inside tapered thread 10, large end face 13, secondary circular bead surface
11.The small end face 12 of pin end 1 and the secondary circular bead surface 11 of female connector 2 form metal/metal sealing.
See Fig. 3 and Fig. 4, the small end face 12 of pin end 1 includes level-one end face 17 and two level end face 18, opposite with small end face 12
The secondary table top shoulder 11 for the female connector 2 answered includes level-one shoulder 19 and two level shoulder 20；The level-one end face 17 and two level end of pin end 1
Waveform sealing surface 6 is set between face 18, and processing is there are four wave crest on waveform sealing surface 6, respectively primary peak 21, the
Two wave crests 22, third wave crest 23, the 4th wave crest 24 form trough between each two wave crest；The level-one shoulder 19 and two of female connector 2
There are a conical seal (contact) face 7, taper identical as 6 taper of waveform sealing surface of pin end 1 between grade shoulder 20；It is public after the completion of upper button
Four wave crests of the waveform sealing surface 6 of connector 1 are contacted with the conical seal (contact) face 7 of female connector, occur elastic-plastic deformation, generate compared with
High contact stress has certain interval between the trough of waveform sealing surface 6 and the conical seal (contact) face 7 of female connector 2.
In the present invention, the level-one end face 17 of pin end 1 and the level-one shoulder 19 of female connector 2 are interference fitted after the completion of upper button；
The two level end face 18 of pin end 1 is interference fitted with the two level shoulder 20 of female connector 2.
In the present invention, have between the level-one end face 17 and two level end face 18 of pin end 1 processed on the conical surface have wave crest and
The waveform sealing surface 6 of trough, the wave crest on waveform sealing surface 6 have 4, between each two wave crest of waveform sealing surface 6
There are one troughs；There are a conical seal (contact) face 7, taper and pin end 1 between the level-one shoulder 19 and two level shoulder 20 of female connector 2
6 taper of waveform sealing surface is identical；The cone seal of the wave crest and female connector of the waveform sealing surface 6 of pin end after the completion of upper button
Face 7 contacts, and elastic-plastic deformation occurs, and generates contact stress, the trough of waveform sealing surface 6 and the conical seal (contact) face 7 of female connector 2
Between have certain interval.
In the present invention, 7 shape of conical seal (contact) face of the entire waveform sealing surface 6 of pin end 1 and female connector 2 after the completion of upper button
Formed at multi-stage sealed, between primary peak 21 and conical seal (contact) face 7 primary seal, secondary peak 22 and conical seal (contact) face 7 it
Between formed between secondary seal, third wave crest 23 and conical seal (contact) face 7 and form three-level sealing, 24 conical seal (contact) face 7 of the 4th wave crest
Between form level Four sealing, the gap formed between the trough of waveform sealing surface 6 and the conical seal (contact) face 7 of female connector is depositing
The thread compound of lubricating action is put.
In the present invention, increased by being arranged female connector conical seal (contact) face 7 between level-one shoulder 19 and two level shoulder 20
The radial thickness of conical seal (contact) face 7, by being arranged the waveform sealing surface 6 of pin end 1 in level-one end face 17 and two level end
18 between face, waveform sealing is reduced, 6 radial thickness is more also easy to produce elastoplasticity by this set waveform sealing surface 6
Waveform realizes sealing effect.
In the present invention, and 1 main circular bead surface of pin end, 14 the tangent, on 14 right side of main circular bead surface, along 1 one Zhou Youyi of pin end
A annular seal groove 15 for placing sealing ring 5, the sealing ring 5 after the completion of upper button in seal groove 15 are interference fitted with connector, realize
Sealing.
In the present invention, with 1 main circular bead surface of pin end, 14 the tangent, in 14 left side of main circular bead surface, there are three equally distributed
Groove 16, the groove 16 are used for placing closing piece 3.
In the present invention, closing piece 3 contacts side with female connector 2 has saw tooth belt, closing piece 3 to be connected to by screw 4 and pin end 1
Together, the large end face 13 of closing piece 3 and female connector 2, which contacts side, saw tooth belt, sees Fig. 5, will in the case where screw 4 compresses force effect
Pin end 1 and female connector 2 are locked, and are prevented when " unfreezing " operation inverts drilling rod, pin end 1 and female connector 2 loosen.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be the present invention's
Within protection domain.
Claims (9)
1. a kind of hermetic sealing drill pipe joint preventing reversion shackle, which is characterized in that including being tightly connected by taper pipe thread (8)
Pin end (1) and female connector (2), be additionally provided in the outside wall surface of the pin end (1) and adjoin the female connector (2) end face
Groove (16), the end face for abutting the female connector (2) is also installed in the groove (16), and radially the locked mother connects
The closing piece (3) of head (2).
2. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 1, which is characterized in that the cone
Pipe screw thread (8) includes being respectively arranged on the outer cone thread (9) being mutually matched on pin end (1) outside wall surface and female connector (2) internal face
With inside tapered thread (10), the pin end (1) outside wall surface the both ends of outer cone thread (9) be respectively equipped with main circular bead surface (14) and
Small end face (12), the female connector (2) internal face are equipped with secondary shoulder in one end of inside tapered thread (10), and the other end is large end face
(13), wherein the main circular bead surface (14) adjoins the groove (16), and match with large end face (13) it is in sealing contact, it is described
Secondary shoulder and the small end face (12) it is in sealing contact.
3. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 2, which is characterized in that described is big
One section of inclined wall consistent with inside tapered thread (10) gradient, the master are additionally provided between end face (13) and inside tapered thread (10)
Seal groove (15) is additionally provided between circular bead surface (14) and outer cone thread (9), when pin end (1) and female connector (2) are tightly connected,
Also interference fit is provided with sealing ring (5) in the seal groove (15).
4. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 2, which is characterized in that described is small
End face (12) include along the level-one end face (17) that pin end (1) is radially arranged and two level end face (18), in level-one end face (17) and
Also transition is provided with external seal face between two level end face (18),
The secondary circular bead surface (11) includes level-one shoulder (19) and two level shoulder (20), in level-one shoulder (19) and two level shoulder
(20) inner sealing surface is equipped between, wherein the level-one shoulder (19) matches connection, the two level shoulder with level-one end face (17)
(20) connection is matched with two level end face (18), the external seal face contacts to form airtight cover with inner sealing surface.
5. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 4, which is characterized in that described is outer
Sealing surface is waveform sealing surface (6), and the inner sealing surface is conical seal (contact) face identical with waveform sealing surface (6) taper
(7)；
It is formed after being detained on pin end (1) and female connector (2), between the wave crest and conical seal (contact) face (7) of waveform sealing surface (6) more
Grade sealing.
6. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 5, which is characterized in that waveform is close
Also storage has lubrication thread compound in the gap formed between the trough and sealing surface of cover (6).
7. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 5, which is characterized in that the wave
There are four wave crests for processing on shape wave sealing surface (6), and level Four sealing surface is formed between the wave crest and conical seal (contact) face (7).
8. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 1, which is characterized in that the lock
Block (3) is equipped with polylith, and every piece is all made of screw (4) and is fixed in the groove (16).
9. a kind of hermetic sealing drill pipe joint preventing reversion shackle according to claim 1, which is characterized in that the lock
Block (3) is equipped with saw tooth belt in the side contacted with the end face of female connector (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171218.7A CN108625797A (en) | 2017-03-21 | 2017-03-21 | A kind of hermetic sealing drill pipe joint preventing reversion shackle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171218.7A CN108625797A (en) | 2017-03-21 | 2017-03-21 | A kind of hermetic sealing drill pipe joint preventing reversion shackle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108625797A true CN108625797A (en) | 2018-10-09 |
Family
ID=63706415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710171218.7A Pending CN108625797A (en) | 2017-03-21 | 2017-03-21 | A kind of hermetic sealing drill pipe joint preventing reversion shackle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108625797A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594931A (en) * | 2018-12-24 | 2019-04-09 | 山东祺龙海洋石油钢管股份有限公司 | Drilling well spiral duct Double Tops silk Anti-rotary block |
| CN112709744A (en) * | 2021-01-13 | 2021-04-27 | 北京航天试验技术研究所 | Seal structure of screw hole under low temperature, high pressure liquefied gas environment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2332807Y (en) * | 1998-03-13 | 1999-08-11 | 杜晓瑞 | High pressure sealing joint |
| WO2011159193A1 (en) * | 2010-06-15 | 2011-12-22 | Nizienko Yuri Konstantinovich | Hermetically sealed screw-threaded joint for pipes in a drilling installation string |
| CN202810690U (en) * | 2012-07-20 | 2013-03-20 | 海城市石油机械制造有限公司 | Safety connector with zigzag thread |
| CN104018788A (en) * | 2014-06-19 | 2014-09-03 | 上海海隆石油钻具有限公司 | Drill rod joint with thread profiles |
| CN105604499A (en) * | 2014-11-19 | 2016-05-25 | 宝山钢铁股份有限公司 | A direct connection type double-step threaded joint |
| CN105888573A (en) * | 2016-05-18 | 2016-08-24 | 建湖县永维阀门钻件有限公司 | Threaded connector of riser pipe |
-
2017
- 2017-03-21 CN CN201710171218.7A patent/CN108625797A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2332807Y (en) * | 1998-03-13 | 1999-08-11 | 杜晓瑞 | High pressure sealing joint |
| WO2011159193A1 (en) * | 2010-06-15 | 2011-12-22 | Nizienko Yuri Konstantinovich | Hermetically sealed screw-threaded joint for pipes in a drilling installation string |
| CN202810690U (en) * | 2012-07-20 | 2013-03-20 | 海城市石油机械制造有限公司 | Safety connector with zigzag thread |
| CN104018788A (en) * | 2014-06-19 | 2014-09-03 | 上海海隆石油钻具有限公司 | Drill rod joint with thread profiles |
| CN105604499A (en) * | 2014-11-19 | 2016-05-25 | 宝山钢铁股份有限公司 | A direct connection type double-step threaded joint |
| CN105888573A (en) * | 2016-05-18 | 2016-08-24 | 建湖县永维阀门钻件有限公司 | Threaded connector of riser pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594931A (en) * | 2018-12-24 | 2019-04-09 | 山东祺龙海洋石油钢管股份有限公司 | Drilling well spiral duct Double Tops silk Anti-rotary block |
| CN112709744A (en) * | 2021-01-13 | 2021-04-27 | 北京航天试验技术研究所 | Seal structure of screw hole under low temperature, high pressure liquefied gas environment |
| CN112709744B (en) * | 2021-01-13 | 2024-06-11 | 北京航天试验技术研究所 | Sealing structure of threaded hole under low-temperature and high-pressure liquefied gas environment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181009 |
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| RJ01 | Rejection of invention patent application after publication |