CN106837196A - A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well - Google Patents
A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well Download PDFInfo
- Publication number
- CN106837196A CN106837196A CN201710097741.XA CN201710097741A CN106837196A CN 106837196 A CN106837196 A CN 106837196A CN 201710097741 A CN201710097741 A CN 201710097741A CN 106837196 A CN106837196 A CN 106837196A
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- Prior art keywords
- joint
- ridge
- male
- female
- female joint
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- 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 ultrahigh anti-torsion tool joint thread suitable for extended reach well, mainly it is made up of female joint and male joint, it is characterised in that：Female joint ridge, female joint nose and female joint circular bead surface are machined with female joint, female joint ridge is engaged for being connected female joint and male joint with male joint ridge, male joint ridge, male joint nose and male joint circular bead surface are machined with the male joint, male joint nose is contacted with female joint circular bead surface, and male joint circular bead surface is contacted with female joint nose；The central diameter of male joint ridge and female joint ridge has identical taper；Rotate to be formed by tooth type angular screw on male joint ridge and female joint ridge, and thread form angle bottom is fillet.The present invention can effectively improve the torsional property and service life of tool joint thread suitable for the wellbore construction operation of extended reach well, reduce the crash rate of tool joint thread.
Description
Technical field
It is that one kind is applied to extended reach well the present invention relates to a kind of for oil, the tool joint thread of gas drilling
Tool joint thread under superelevation torque load effect operating mode.
Background technology
Drilling rod of the tool joint thread by connection one by one, is oil, the Surface power drive equipment of gas drilling and well
Lower drilling tool provides passage, due to the complexity of its structure, causes tool joint thread to become weak link.
The method that extended reach well provides reduces cost for the exploitation of small oil field and fault block oil and gas pool, obtains quick in recent years
Development.In extended reach well drillng operation, because the frictional resistance that drilling rod is subject to is larger, cause existing API structures and dual stage
Frequently there is fracture failure in the tool joint thread of shoulder structure, tool joint thread once fails, and gently then stops work and salvages, consumption
When laborious, heavy then cause full well to be scrapped, economic loss and its seriously.And it is to cause tool joint thread to be broken to bear moment of torsion deficiency
The principal element of failure.Due to being limited by borehole size, it is difficult to improved by the outside dimension for changing tool joint thread
Torsional property.Therefore in the urgent need to a kind of novel super-high anti-twisting drill pipe joint screw thread that can bear stronger torsional property, can
Bigger torque load is born in the drilling operation course of extended reach well, to reduce the failure accidents rate of tool joint thread.
The content of the invention
It is an object of the invention to overcome prior art not enough, there is provided a kind of ultrahigh anti-torsion drilling rod suitable for extended reach well
Joint screw thread, and then the bearing strength of tool joint thread is improved, reduce failure accidents rate.
To reach above-mentioned purpose, the technical scheme that this problem of solution of the invention is used is：
A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well of the invention, is mainly made up of female joint and male joint,
It is characterized in that：Be machined with female joint ridge, female joint nose and female joint circular bead surface in female joint, female joint ridge with
Male joint ridge is engaged for connecting female joint and male joint, and male joint ridge, male joint are machined with the male joint
Nose and male joint circular bead surface, male joint nose are contacted with female joint circular bead surface, and male joint circular bead surface is contacted with female joint nose.
The central diameter of male joint ridge and female joint ridge has identical taper, and its taper is 1:12~1:18.
Female joint nose is 15~50mm beyond the length of female joint ridge；Male joint nose exceeds male joint ridge
Length be 5~30mm.
Rotate to be formed by tooth type angular screw on male joint ridge and female joint ridge, the angle value of thread form angle is 50
~60.
Male joint ridge and female joint ridge bottom are fillet, and its radius of corner is 0.5mm~1.5mm.
Compared with prior art, its advantage is the present invention：1st, under the conditions of external diameter is waited, improve tool joint thread
Torsional property；2nd, the peak stress during reducing tool joint thread under arms, increased its anti-fatigue life；3rd, compared with
Small taper increased the internal diameter of tool joint thread, and then can reduce the loss to drilling liquid pressure of tool joint thread.
The present invention can effectively improve the torsional property of tool joint thread suitable for the wellbore construction operation of extended reach well
And service life, reduce the crash rate of tool joint thread.
Brief description of the drawings
Fig. 1 is a kind of structural representation of ultrahigh anti-torsion tool joint thread suitable for extended reach well of the invention；
Fig. 2 is female joint structural representation；
Fig. 3 is male joint structural representation；
Fig. 4 is the zoomed-in view of A in Fig. 2；
Fig. 5 is the zoomed-in view of B in Fig. 3.
In figure, 1 female joint, 2 female joint ridges, 3 female joint noses, 4 male joint circular bead surfaces, 5 male joints, 6
Male joint ridge, 7 male joint noses, 8 female joint circular bead surfaces, 9 central diameters, 10 thread form angles, 11 fillets.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 1,2,3,4,5, a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well of the invention, mainly by mother
Joint 1 and male joint 5 are constituted, it is characterised in that：Female joint ridge 2, female joint nose 3 and mother is machined with female joint 1 to connect
Head circular bead surface 8, female joint ridge 2 is engaged for being connected female joint 1 and male joint 5, the male joint with male joint ridge 6
Male joint ridge 6, male joint nose 7 and male joint circular bead surface 4, male joint nose 7 and female joint circular bead surface 8 are machined with 5
Contact, male joint circular bead surface 4 is contacted with female joint nose 3.
As shown in Figure 2,3, the central diameter 9 of male joint ridge 6 and female joint ridge 2 has identical taper, its taper
It is 1:12~1:18.Female joint nose 3 is 15~50mm beyond the length of female joint ridge 2；Male joint nose 7 exceeds public access
The length of head thread tooth 6 is 5~30mm.
As shown in Figure 4,5, formed by the spiral rotating of thread form angle 10 on male joint ridge 6 and female joint ridge 2, tooth
The angle value at type angle 10 is 50~60.Male joint ridge 6 and the bottom of female joint ridge 2 are fillet 11, its radius of corner
It is 0.5mm~1.5mm.
Operation principle is：A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well is made by applying torque wrench moment
Obtain female joint 1 to be linked together by female joint ridge 2 and male joint ridge 6 with male joint 5, now female joint ridge
2 engage with male joint ridge 6, female joint nose 3 and male joint circular bead surface 4 are in close contact, female joint circular bead surface 8 and male joint
Nose 7 is in close contact；During extended reach well construction operation, by the contact with male joint ridge 6 of female joint ridge 2
The contact force of drag, female joint nose 3 and male joint circular bead surface 4, female joint circular bead surface 8 are supported with the contact force of male joint nose 7
The torque load that anti-tool joint thread is born；It is larger by female joint ridge 2 and the bottom fillet 11 of male joint ridge 6
Radius reduction torque load effect under peak stress.
Claims (5)
1. a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well, mainly by female joint（1）And male joint（5）Group
Into, it is characterised in that：Female joint（1）On be machined with female joint ridge（2）, female joint nose（3）With female joint circular bead surface
（8）, female joint ridge（2）With male joint ridge（6）Engage for connecting female joint（1）And male joint（5）, the public access
Head（5）On be machined with male joint ridge（6）, male joint nose（7）With male joint circular bead surface（4）, male joint nose（7）With mother
Joint circular bead surface（8）Contact, male joint circular bead surface（4）With female joint nose（3）Contact.
2. a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well according to claim 1, it is characterized in that：It is public
Joint screw thread tooth（6）With female joint ridge（2）Central diameter（9）With identical taper, its taper is 1:12~1:18.
3. a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well according to claim 1 and 2, its feature
It is：Female joint nose（3）Beyond female joint ridge（2）Length be 15~50mm；Male joint nose（7）Beyond male joint spiral shell
Line tooth（6）Length be 5~30mm.
4. a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well according to claim 1 or 2 or 3, it is special
Levying is：Male joint ridge（6）With female joint ridge（2）On by thread form angle（10）Spiral rotating is formed, thread form angle（10）
Angle value be 50~60.
5. a kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well according to claim 1 or 2 or 3 or 4, its
It is characterized in：Male joint ridge（6）With female joint ridge（2）Bottom is fillet（11）, its radius of corner be 0.5mm~
1.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097741.XA CN106837196A (en) | 2017-02-22 | 2017-02-22 | A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097741.XA CN106837196A (en) | 2017-02-22 | 2017-02-22 | A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837196A true CN106837196A (en) | 2017-06-13 |
Family
ID=59133128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710097741.XA Pending CN106837196A (en) | 2017-02-22 | 2017-02-22 | A kind of ultrahigh anti-torsion tool joint thread suitable for extended reach well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837196A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359859A (en) * | 2018-01-19 | 2019-10-22 | 西南石油大学 | A kind of quickly upper button varying pitch ultrahigh anti-torsion tool joint |
| CN111868429A (en) * | 2018-03-05 | 2020-10-30 | 杰富意钢铁株式会社 | Threaded joint for oil well pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10267175A (en) * | 1997-03-25 | 1998-10-09 | Nippon Steel Corp | Screw joint for steel pipe |
| US5826921A (en) * | 1991-11-25 | 1998-10-27 | Woolley; Brown J. | Threaded pipe joint |
| US5833541A (en) * | 1993-07-23 | 1998-11-10 | Turner; William E. | Elastomeric joints having interlocking threaded portions |
| CN204729023U (en) * | 2015-07-08 | 2015-10-28 | 西南石油大学 | A kind of large hydrophthalmia high resistance turns round joint of petroleum drill rod |
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
-
2017
- 2017-02-22 CN CN201710097741.XA patent/CN106837196A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826921A (en) * | 1991-11-25 | 1998-10-27 | Woolley; Brown J. | Threaded pipe joint |
| US5833541A (en) * | 1993-07-23 | 1998-11-10 | Turner; William E. | Elastomeric joints having interlocking threaded portions |
| JPH10267175A (en) * | 1997-03-25 | 1998-10-09 | Nippon Steel Corp | Screw joint for steel pipe |
| CN204729023U (en) * | 2015-07-08 | 2015-10-28 | 西南石油大学 | A kind of large hydrophthalmia high resistance turns round joint of petroleum drill rod |
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359859A (en) * | 2018-01-19 | 2019-10-22 | 西南石油大学 | A kind of quickly upper button varying pitch ultrahigh anti-torsion tool joint |
| CN111868429A (en) * | 2018-03-05 | 2020-10-30 | 杰富意钢铁株式会社 | Threaded joint for oil well pipe |
| CN111868429B (en) * | 2018-03-05 | 2022-04-15 | 杰富意钢铁株式会社 | Threaded joint for oil well pipe |
| US11549620B2 (en) | 2018-03-05 | 2023-01-10 | Jfe Steel Corporation | Screw joint for oil well pipe |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170613 |