CN108252660A - A kind of high torque highly anti-fatigue type nipple - Google Patents
A kind of high torque highly anti-fatigue type nipple Download PDFInfo
- Publication number
- CN108252660A CN108252660A CN201810186234.8A CN201810186234A CN108252660A CN 108252660 A CN108252660 A CN 108252660A CN 201810186234 A CN201810186234 A CN 201810186234A CN 108252660 A CN108252660 A CN 108252660A
- Authority
- CN
- China
- Prior art keywords
- thread
- internal thread
- external screw
- screw thread
- external
- 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
- 210000002445 nipple Anatomy 0.000 title claims abstract description 20
- 230000002929 anti-fatigue Effects 0.000 title claims abstract description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 33
- 206010016256 fatigue Diseases 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
A kind of high torque highly anti-fatigue type nipple, the female adapter including the male connection with shoulder outside external screw thread, external thread section and external screw thread outer end face and with the outer shoulder of internal thread inner face, internal thread segment and internal thread；It is characterized in that：The external thread section and the form of thread of internal thread segment use different tapers using moon shape form of thread, external thread section and the internal thread segment.It is more and more harsher in drilling condition that it overcomes nipple, horizontal well, fatiguability on the basis of being continuously increased of horizontal ultradeep well horizontal length, easily consume the technical issues of, joint screw thread torque capacity is made to be increased, the anti-fatigue performance of joint screw thread also improves therewith.
Description
Technical field
The present invention relates to the nipple used in the probing of oil well or gas well and recovery process, particularly a kind of high torsion
Square highly anti-fatigue type nipple.
Background technology
The nipple used in the probing of oil well or gas well and recovery process generally uses American Petroleum Institute (API) more
（American Petroleum Institute, also known as API）The API standard of formulation is manufactured.In the base of API nipples
On plinth, domestic and international major producer has developed dual stage shoulder tool joint thread in succession, ultrahigh anti-torsion dual stage shoulder tool joint thread,
But these connectors, can not due to being constrained by API thread tapers, connector overall structure and triangle thread thread form mentality of designing
Meet the requirement of existing higher torque capability more high fatigue property nipple.Therefore a kind of completely new screw thread must just be developed
The nipple in the high torque highly anti-fatigue service life of thread form and taper.
Invention content
The purpose of the present invention is to provide a kind of completely new high torque highly anti-fatigue type nipple, the original teeth of key breakthrough
The limitation of shape and the mentality of designing of thread taper the technical issues of solution present in the aforementioned prior art, overcomes nipple
It is more and more harsher in drilling condition, horizontal well, fatiguability, easily consume on the basis of being continuously increased of horizontal ultradeep well horizontal length
The technical issues of, joint screw thread torque capacity is made to be increased, the anti-fatigue performance of joint screw thread also improves therewith.
To achieve the above object, the technical scheme is that：
A kind of high torque highly anti-fatigue type nipple, it includes having the outer shoulder of external screw thread, external thread section and external screw thread outer end
The male connection in face and the female adapter with the outer shoulder of internal thread inner face, internal thread segment and internal thread；Its feature
It is：The external thread section and the form of thread of internal thread segment use moon shape form of thread, the external thread section and interior spiral shell
Line section uses different tapers.
The external thread section the moon shape external screw thread tooth form external screw thread guide surface for protrusion spline curve, external screw thread loading end
For the spline curve fallen in；External screw thread crest and external screw thread tooth bottom are straight line, and be parallel to external screw thread busbar；External screw thread is led
It is connected to face with external screw thread tooth bottom by external screw thread guide surface tooth bottom transition arc rounding off；External screw thread guide surface with it is outer
Thread crest is connected by external screw thread guide surface crest transition arc rounding off；External screw thread loading end and external screw thread tooth bottom
It is connected by external screw thread loading end tooth bottom transition arc rounding off；External screw thread loading end passes through outer spiral shell with external screw thread crest
Line loading end crest transition arc rounding off connects；The moon shape external screw thread tooth form internal thread guide surface of the internal thread segment is
The spline curve fallen in, internal thread loading end are the spline curve protruded；Internal thread tooth bottom and internal thread crest are straight
Line, and it is parallel to external screw thread busbar；Internal thread guide surface is justified with internal thread crest by internal thread guide surface crest transition arc
It slips over to cross and connect；Internal thread guide surface is connected with internal thread tooth bottom by internal thread guide surface tooth bottom transition arc rounding off
It picks up and；Internal thread loading end is connected with internal thread crest by internal thread loading end crest transition arc rounding off；
Internal thread loading end is connected with internal thread tooth bottom by internal thread loading end tooth bottom transition arc rounding off.
The ratio of the taper of the internal thread segment and the taper of external thread section is more than 1.The range of taper of internal thread segment is 1:4~
1:36, the range of taper of external thread section is 1:（4+t）~1:（36+t）, ranging from the 0.06 ~ 0.36 of t.
The invention has the advantages that：The present invention breaks through the intrinsic triangle thread thread form mentalities of designing of API, using moon shape spiral shell
Line tooth form, the guide surface and loading end area for making ridge substantially increase, the flat orthodrome that Bottom of Thread tool bigger more optimizes
Tooth bottom, internal and external threads difference cone is high in addition, effectively alleviates machine tightly after upper button, the stress water at internal and external threads incomplete thread tooth
It is flat, joint screw thread entirety torque capability is improved, after internal and external screw thread engagement connection, can greatly be increased secured after engagement
Degree increases joint screw thread torque capacity, improves the fatigue behaviour of joint screw thread, reduces corrupted probability and the time limit of nipple,
Energy consumption is reduced, has saved production cost.
Description of the drawings
Fig. 1 is a kind of high torque highly anti-fatigue type nipple internal and external threads cooperation figure in the present invention；
Fig. 2 is the moon shape form of thread figure that a kind of high torque highly anti-fatigue type nipple internal and external screw thread section uses in the present invention
In figure：1- male connections, 2- female adapters, 3- external screw thread outer end faces, the outer shoulder of 4- external screw threads, 5- internal threads inner end
Face, the outer shoulder of 6- internal threads, 7- external thread sections, 8- internal thread segments, W- external screw thread thread forms, W1- external screw thread guide surfaces, the outer spiral shells of W2-
Line loading end, W3- external screw thread crests, W4- external screw thread teeth bottom, W5- external screw thread loading end crest transition arcs, W6- external screw threads are led
To face crest transition arc, W7- external screw thread guide surface teeth bottom transition arc, W8- external screw thread loading end teeth bottom transition arc；In N-
The form of thread, N 1- internal thread guide surfaces, N 2- internal thread loading ends, N 3- internal thread teeth bottom, N 4- internal thread crests, N 5-
Internal thread loading end tooth bottom transition arc, N 6- internal thread guide surface teeth bottom transition arc, N 7- internal thread guide surface crest mistakes
Cross circular arc, N 8- internal thread loading end crest transition arcs.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, the invention discloses a kind of high torque highly anti-fatigue type nipple, it includes having outside external screw thread
The male connection 1 of shoulder 3, external thread section 7 and external screw thread outer end face 4 and with internal thread inner face 5,8 and of internal thread segment
The female adapter 2 of the outer shoulder 6 of internal thread；It is characterized in that：The external thread section 7 and the form of thread of internal thread segment 8 are adopted
With moon shape form of thread, the external thread section 7 and internal thread segment 8 use different tapers.
Referring to Fig. 2, the external screw thread guide surface W1 of moon shape external screw thread tooth form W of the external thread section is the batten of protrusion
Curve, external screw thread loading end W2 are the spline curve fallen in；External screw thread crest W3 and external screw thread tooth bottom W4 is straight line, and flat
Row is in external screw thread busbar；External screw thread guide surface W1 and external screw thread tooth bottom W4 is round and smooth by external screw thread guide surface tooth bottom transition arc W7
Transition connects；External screw thread guide surface W1 and external screw thread crest W3 passes through the round and smooth mistakes of external screw thread guide surface crest transition arc W6
It crosses and connects；External screw thread loading end W2 and external screw thread tooth bottom W4 passes through external screw thread loading end tooth bottom transition arc W8 rounding ofves
It connects；External screw thread loading end W2 and external screw thread crest W3 is connected by external screw thread loading end crest transition arc W5 rounding ofves
It picks up and；The moon shape external screw thread tooth form N internal thread guide surfaces N1 of the internal thread segment is the spline curve fallen in, and internal thread carries
Face N2 is the spline curve protruded；Internal thread tooth bottom N3 and internal thread crest N4 is straight line, and be parallel to external screw thread busbar；
Internal thread guide surface N1 and internal thread crest N4 is connected by internal thread guide surface crest transition arc N7 rounding ofves；It is interior
Screw thread guide surface N1 and internal thread tooth bottom N3 is connected by internal thread guide surface tooth bottom transition arc N6 rounding ofves；Interior spiral shell
Line loading end N2 and internal thread crest N4 is connected by internal thread loading end crest transition arc N8 rounding ofves；Internal thread
Loading end N2 and internal thread tooth bottom N3 is connected by internal thread loading end tooth bottom transition arc N5 rounding ofves.Inside and outside spiral shell
Line can greatly increase the firmness after engagement by using the design of the moon shape form of thread.,
Please refer to Fig.1,2, it is preferred that the ratio of the taper of internal thread segment 8 and the taper of external thread section 7 is more than 1；Internal thread segment 8
Range of taper be 1:4~1:36, the range of taper of external thread section 7 is 1:（4+t）~1:（36+t）, t ranging from 0.06 ~
0.36；In practice, the ratio of external thread section can also be more than the ratio of internal thread segment taper.Using internal and external screw thread section
Different taper designs can increase joint screw thread torque capacity, improve the fatigue behaviour of joint screw thread.
The present invention is engaged in internal and external screw thread and is connected by using the taper of the moon shape form of thread and internal and external screw thread section difference
Afterwards, it can greatly increase the firmness after engagement, increase joint screw thread torque capacity, improve the fatigue behaviour of joint screw thread, drop
The corrupted probability of low thread connector and time limit, energy consumption is reduced, saved production cost.
It is only presently preferred embodiments of the present invention in summary, is not used for limiting the practical range of the present invention.It is i.e. all
According to the equivalent changes and modifications that the content of scope of the present invention patent is made, the technology scope of the present invention all should be.
Claims (3)
1. a kind of high torque highly anti-fatigue type nipple, including with shoulder outside external screw thread（3）, external thread section（7）With outer spiral shell
Line outer end face（4）Male connection（1）And with internal thread inner face（5）, internal thread segment（8）With shoulder outside internal thread
（6）Female adapter（2）；It is characterized in that：The external thread section（7）And internal thread segment（8）Form of thread use the moon
Shape form of thread, the external thread section（7）And internal thread segment（8）Using different tapers.
2. high torque highly anti-fatigue type nipple according to claim 1, it is characterised in that：The moon shape of the external thread section
External screw thread tooth form（W）External screw thread guide surface（W1）For the spline curve of protrusion, external screw thread loading end（W2）For the sample fallen in
Curve；External screw thread crest（W3）With external screw thread tooth bottom（W4）It is straight line, and is parallel to external screw thread busbar；External screw thread guide surface
（W1）With external screw thread tooth bottom（W4）Pass through external screw thread guide surface tooth bottom transition arc（W7）Rounding off connects；External screw thread is led
To face（W1）With external screw thread crest（W3）Pass through external screw thread guide surface crest transition arc（W6）Rounding off connects；Outer spiral shell
Line loading end（W2）With external screw thread tooth bottom（W4）Pass through external screw thread loading end tooth bottom transition arc（W8）Rounding off connects；
External screw thread loading end（W2）With external screw thread crest（W3）Pass through external screw thread loading end crest transition arc（W5）Rounding off connects
Get up；The moon shape external screw thread tooth form of the internal thread segment（N）Internal thread guide surface（N1）For the spline curve fallen in, internal thread is held
Section（N2）For the spline curve protruded；Internal thread tooth bottom（N3）With internal thread crest（N4）It is straight line, and is parallel to outer
Screw thread busbar；Internal thread guide surface（N1）With internal thread crest（N4）Pass through internal thread guide surface crest transition arc（N7）It is round and smooth
Transition connects；Internal thread guide surface（N1）With internal thread tooth bottom（N3）Pass through internal thread guide surface tooth bottom transition arc（N6）
Rounding off connects；Internal thread loading end（N2）With internal thread crest（N4）Pass through internal thread loading end crest transition arc
（N8）Rounding off connects；Internal thread loading end（N2）With internal thread tooth bottom（N3）Pass through internal thread loading end tooth bottom transition
Circular arc（N5）Rounding off connects.
3. high torque highly anti-fatigue type nipple according to claim 1, it is characterised in that：Internal thread segment（8）Cone
Degree and external thread section（7）Taper ratio be more than 1；Internal thread segment（8）Range of taper be 1:4~1:36, external thread section（7）
Range of taper be 1:（4+t）~1:（36+t）, ranging from the 0.06 ~ 0.36 of t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186234.8A CN108252660A (en) | 2018-03-07 | 2018-03-07 | A kind of high torque highly anti-fatigue type nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186234.8A CN108252660A (en) | 2018-03-07 | 2018-03-07 | A kind of high torque highly anti-fatigue type nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108252660A true CN108252660A (en) | 2018-07-06 |
Family
ID=62745932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810186234.8A Pending CN108252660A (en) | 2018-03-07 | 2018-03-07 | A kind of high torque highly anti-fatigue type nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756771A (en) * | 2018-08-02 | 2018-11-06 | 上海海隆石油管材研究所 | A kind of tubing string screw connection structure |
| CN110608322A (en) * | 2019-09-11 | 2019-12-24 | 江苏璞腾油气装备有限公司 | Four-wire marine riser joint |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020113436A1 (en) * | 2000-03-21 | 2002-08-22 | Lionel Verdillon | Threaded tubular element for fatigue resistant threaded tubular joint and resulting threaded tubular joint |
| US20040195835A1 (en) * | 2001-02-09 | 2004-10-07 | Thierry Noel | Tubular threaded joint with trapezoid threads having convex bulged thread surface |
| CN102395747A (en) * | 2009-04-17 | 2012-03-28 | 瓦卢莱克曼内斯曼油气法国公司 | Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection |
| CN103282708A (en) * | 2010-12-28 | 2013-09-04 | 瓦卢莱克曼内斯曼油气法国公司 | Threaded connection for drilling and working hydrocarbon wells |
| CN103696704A (en) * | 2013-11-19 | 2014-04-02 | 山西环界石油钻具制造股份有限公司 | Dual-tooth-form gas-tight thread |
| CN105735912A (en) * | 2016-05-16 | 2016-07-06 | 陕西太合科技有限公司 | Tool joint linkage structure with different matching tapers |
| CN208073372U (en) * | 2018-03-07 | 2018-11-09 | 上海海隆石油管材研究所 | A kind of high torque highly anti-fatigue type nipple |
-
2018
- 2018-03-07 CN CN201810186234.8A patent/CN108252660A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020113436A1 (en) * | 2000-03-21 | 2002-08-22 | Lionel Verdillon | Threaded tubular element for fatigue resistant threaded tubular joint and resulting threaded tubular joint |
| US20040195835A1 (en) * | 2001-02-09 | 2004-10-07 | Thierry Noel | Tubular threaded joint with trapezoid threads having convex bulged thread surface |
| CN102395747A (en) * | 2009-04-17 | 2012-03-28 | 瓦卢莱克曼内斯曼油气法国公司 | Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection |
| CN103282708A (en) * | 2010-12-28 | 2013-09-04 | 瓦卢莱克曼内斯曼油气法国公司 | Threaded connection for drilling and working hydrocarbon wells |
| CN103696704A (en) * | 2013-11-19 | 2014-04-02 | 山西环界石油钻具制造股份有限公司 | Dual-tooth-form gas-tight thread |
| CN105735912A (en) * | 2016-05-16 | 2016-07-06 | 陕西太合科技有限公司 | Tool joint linkage structure with different matching tapers |
| CN208073372U (en) * | 2018-03-07 | 2018-11-09 | 上海海隆石油管材研究所 | A kind of high torque highly anti-fatigue type nipple |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756771A (en) * | 2018-08-02 | 2018-11-06 | 上海海隆石油管材研究所 | A kind of tubing string screw connection structure |
| CN110608322A (en) * | 2019-09-11 | 2019-12-24 | 江苏璞腾油气装备有限公司 | Four-wire marine riser joint |
| CN110608322B (en) * | 2019-09-11 | 2024-04-12 | 江苏璞腾油气装备有限公司 | Four-wire marine riser joint |
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