CN205876213U - Flexible moment of torsion bumper shock absorber - Google Patents
Flexible moment of torsion bumper shock absorber Download PDFInfo
- Publication number
- CN205876213U CN205876213U CN201620856467.0U CN201620856467U CN205876213U CN 205876213 U CN205876213 U CN 205876213U CN 201620856467 U CN201620856467 U CN 201620856467U CN 205876213 U CN205876213 U CN 205876213U
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- torsion
- moment
- engaging tooth
- flexible
- wave form
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Abstract
The utility model discloses a flexible moment of torsion bumper shock absorber, this flexible moment of torsion bumper shock absorber is the last drive sub in the barrel and is provided with the flexible moment of torsion transmission nipple joint more than two down between the drive shaft, be provided with the sinusoidal waveform engaging tooth on the both ends face of every flexible moment of torsion transmission nipple joint, adjacent flexible moment of torsion transmission nipple joint passes through the interlock of each other of sinusoidal waveform engaging tooth and transmits the moment of torsion together, and be provided with between the occlusal surface of sinusoidal waveform engaging tooth with the anastomotic elastic element of sinusoidal waveform engaging tooth. The utility model discloses a plurality of flexible moments of torsion transmission nipple joint cushions the moment of torsion impact load who produces step by step on the drilling string, reduce the moment of torsion peak value through the elastic element dispersion between the flexible moment of torsion transmission nipple joint simultaneously for violent moment of torsion impact load is reduce until the disappearance, thereby avoids the drilling string resonance phenomenon to appear twising reverse, improves the job stabilization nature of drilling string, and then improves well drilling speed and well bore quality, reduces the drilling cost.
Description
Technical field
This utility model relates to a kind of flexible torque amortisseur, belongs to drilling tool technical field.
Background technology
In oil, natural gas and geological prospecting drilling process, in order to reach predetermined drilling depth, need drill bit to do and rotate
Cutting movement, and due to the change of the factors such as drill bit structure, stratum, the pressure of the drill, the reaction torque in shaft bottom also will change therewith, works as rotating speed
Reach a certain critical time, drill string is likely to occur torsional resonance phenomena, and during rotary drilling, lower drill string part subjects axle simultaneously
To pressure and moment of torsion, will produce buckling, and i.e. lose stability when the pressure of the drill exceedes marginal value, moment of torsion also can make drilling tool lose torsion
Bent stability, excessive moment of torsion effect, drill string will produce another kind of failure mode distortion unstable failure.This moment of torsion violent
The harm that causes of change mainly has the following aspects:
1, reducing the service life of drilling rod, serious meeting causes drilling rod to twist off, and down-hole accident occurs.
2, destroy the best effort environment of drill bit, cause drill bit teeth portion come off or fracture, reduce drilling life of bit.
3, impact connecting screw thread, cause screw thread to release or moment of torsion is excessive cannot dismantle.
Existing drilling tool torque-transmitting mechanisms mainly uses spline, six sides and three kinds of structures of trundle, although turn round
Square transmission mechanism is varied, but without string outside, be rigid of transmission, it is impossible to transmission moment of torsion while, reach to weaken or disappear
Effect except torque shock.
Utility model content
Cannot weaken or eliminate the defect of torque shock while transmission moment of torsion to solve existing drill string, this practicality is new
Type provides a kind of flexible torque amortisseur, thus cuts down or eliminate torsional impact load violent on drill string in drilling process
Lotus, it is to avoid torsional resonance phenomena occurs in drill string, improves the job stability of drill string, and then improves bit speed and wellbore quality,
Reduce drilling cost.
The technical solution of the utility model: a kind of flexible torque amortisseur, including cylinder and be fixedly connected on cylinder two
The upper drive sub of end and sealed outer cylinder, be provided with the lower drive shaft that can slide up and down in sealed outer cylinder, lower drive shaft
Lower end is fixedly connected with lower contact, is provided with plural flexible torsion between upper drive sub and the lower drive shaft in cylinder
Square transmission pipe nipple, is provided with sinusoidal wave form engaging tooth, adjacent flexible torsion in the both ends of the surface of each flexible torque transmission pipe nipple
Square transmission pipe nipple passes through the engaged moment of torsion that together transmits of sinusoidal wave form engaging tooth, and at the occlusal surface of sinusoidal wave form engaging tooth
Between be provided with sinusoidal wave form engaging tooth coincide flexible member.
Described upper drive sub or lower drive shaft are provided with sinusoidal wave form with flexible torque contacting of pipe nipple of transmission on end face
Engaging tooth, upper drive sub or lower drive shaft are engaged with flexible torque transmission pipe nipple by sinusoidal wave form engaging tooth, and at sine
The flexible member coincideing with sinusoidal wave form engaging tooth it is provided with between the occlusal surface of waveform engaging tooth.
Described upper drive sub is hollow joint, is provided with central canal in its lower end endoporus, and on the outer wall of central canal
It is cased with sealing ring.
Described lower drive shaft is quill shaft, is cased with sealing ring between its outer wall and inwall of sealed outer cylinder.
Owing to using technique scheme, the utility model has the advantage of: multiple by drill string of this utility model
Flexible torque transmission pipe nipple transmits moment of torsion, is buffered step by step by multiple flexible torque transmission pipe nipple during transmission moment of torsion
The torsional impact load produced on drill string, cuts down moment of torsion peak by the flexible member dispersion between flexible torque transmission pipe nipple simultaneously
Value, under the common effect of Multi-stage flexible moment of torsion transmission pipe nipple and multiple flexible member so that violent torsional impact load quilt
Cut down until disappearing, thus avoid drill string that torsional resonance phenomena occurs, improve the job stability of drill string, and then improve drilling well speed
Degree and wellbore quality, reduce drilling cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of flexible torque amortisseur in this utility model；
Fig. 2 is the structural representation of flexible torque transmission pipe nipple in this utility model；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the structural representation of this utility model elastic element；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the torque vector figure in this utility model between flexible torque transmission pipe nipple.
The upper drive sub of description of reference numerals: 1-, 2-flexible torque transmission pipe nipple, 3-flexible member, drive shaft under 4-, 5-
Lower contact, 6-cylinder, 7-sealed outer cylinder, 8-central canal, 9-sealing ring.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings with embodiment pair
This utility model is described in further detail.
Embodiment of the present utility model: the structural representation of flexible torque amortisseur as it is shown in figure 1, include cylinder 6 and
It is fixedly connected on upper drive sub 1 and the sealed outer cylinder 7 at cylinder 6 two ends, is provided with in sealed outer cylinder 7 and can slide up and down
Lower drive shaft 4, the lower end of lower drive shaft 4 is fixedly connected with lower contact 5, the upper drive sub 1 in cylinder 6 and lower drive shaft 4
Between be provided with 8 flexible torque transmission pipe nipples 2, see Fig. 2～5, the both ends of the surface of each flexible torque transmission pipe nipple 2 set
Being equipped with sinusoidal wave form engaging tooth, adjacent flexible torque transmission pipe nipple 2 passes by sinusoidal wave form engaging tooth is engaged together
Torque delivery, and between the occlusal surface of sinusoidal wave form engaging tooth, it is provided with the flexible member 3 coincideing with sinusoidal wave form engaging tooth.Institute
State drive sub 1 or lower drive shaft 4 and be provided with sinusoidal wave form engaging tooth on end face with flexible torque contacting of pipe nipple 2 of transmission,
Upper drive sub 1 or lower drive shaft 4 are engaged with flexible torque transmission pipe nipple 2 by sinusoidal wave form engaging tooth, and at sinusoidal wave form
The flexible member 3 coincideing with sinusoidal wave form engaging tooth it is provided with between the occlusal surface of engaging tooth.Described upper drive sub 1 is hollow
Joint, is provided with central canal 8, and is cased with sealing ring 9 on the outer wall of central canal 8 in its lower end endoporus.Described lower drive shaft 4 is
Quill shaft, is cased with sealing ring 9 between the inwall of its outer wall and sealed outer cylinder 7.
Operation principle of the present utility model: see Fig. 6, in drilling process, drill string is transmitted by flexible torque amortisseur
Moment of torsion F2, torsional impact load F produced during transmission moment of torsion F2 passes through the lower drive shaft 4 on flexible torque amortisseur
Act on flexible torque transmission pipe nipple 2, owing to adjacent flexible torque transmission pipe nipple 2 is stung mutually by sinusoidal wave form engaging tooth
It is combined, and between the occlusal surface of sinusoidal wave form engaging tooth, is provided with the flexible member 3 coincideing with sinusoidal wave form engaging tooth,
Therefore, the stress point 0 on sinusoidal wave form engaging tooth can move according to the size of transmission moment of torsion, eliminates part torque peak, remaining
Change in torque amount is converted into axial force F 1 and is applied on flexible torque transmission pipe nipple 2, then is transmitted pipe nipple 2 by adjacent flexible moment of torsion
Between flexible member 3 eliminate, so that torsional impact load violent on drill string is cut in, until disappearing, preventing drill string from going out
Existing torsional resonance phenomena.
Claims (4)
1. a flexible torque amortisseur, including cylinder (6) and the upper drive sub (1) that is fixedly connected on cylinder (6) two ends
With sealed outer cylinder (7), it is characterised in that: in sealed outer cylinder (7), be provided with the lower drive shaft (4) that can slide up and down, under drive
The lower end of moving axis (4) is fixedly connected with lower contact (5), between upper drive sub (1) and the lower drive shaft (4) in cylinder (6)
It is provided with plural flexible torque transmission pipe nipple (2), the both ends of the surface of each flexible torque transmission pipe nipple (2) are provided with
Sinusoidal wave form engaging tooth, adjacent flexible torque transmission pipe nipple (2) is transmitted by sinusoidal wave form engaging tooth is engaged together
Moment of torsion, and between the occlusal surface of sinusoidal wave form engaging tooth, it is provided with the flexible member (3) coincideing with sinusoidal wave form engaging tooth.
Flexible torque amortisseur the most according to claim 1, it is characterised in that: described upper drive sub (1) or lower driving
Contacting of axle (4) and flexible torque transmission pipe nipple (2) is provided with sinusoidal wave form engaging tooth on end face, upper drive sub (1) or under
Drive shaft (4) is engaged with flexible torque transmission pipe nipple (2) by sinusoidal wave form engaging tooth, and in the occlusion of sinusoidal wave form engaging tooth
The flexible member (3) coincideing with sinusoidal wave form engaging tooth it is provided with between face.
Flexible torque amortisseur the most according to claim 2, it is characterised in that: described upper drive sub (1) is that hollow connects
Head, is provided with central canal (8), and is cased with sealing ring (9) on the outer wall of central canal (8) in its lower end endoporus.
Flexible torque amortisseur the most according to claim 2, it is characterised in that: described lower drive shaft (4) is quill shaft, its
Sealing ring (9) it is cased with between the inwall of outer wall and sealed outer cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856467.0U CN205876213U (en) | 2016-08-09 | 2016-08-09 | Flexible moment of torsion bumper shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856467.0U CN205876213U (en) | 2016-08-09 | 2016-08-09 | Flexible moment of torsion bumper shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205876213U true CN205876213U (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620856467.0U Active CN205876213U (en) | 2016-08-09 | 2016-08-09 | Flexible moment of torsion bumper shock absorber |
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| Country | Link |
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| CN (1) | CN205876213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089118A (en) * | 2016-08-09 | 2016-11-09 | 贵州高峰石油机械股份有限公司 | A kind of method preventing drill string from torsional resonance occurring and flexible torque amortisseur |
-
2016
- 2016-08-09 CN CN201620856467.0U patent/CN205876213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089118A (en) * | 2016-08-09 | 2016-11-09 | 贵州高峰石油机械股份有限公司 | A kind of method preventing drill string from torsional resonance occurring and flexible torque amortisseur |
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