CN101845941A - Drill string lateral shock absorber for gas drilling - Google Patents
Drill string lateral shock absorber for gas drilling Download PDFInfo
- Publication number
- CN101845941A CN101845941A CN201010142894A CN201010142894A CN101845941A CN 101845941 A CN101845941 A CN 101845941A CN 201010142894 A CN201010142894 A CN 201010142894A CN 201010142894 A CN201010142894 A CN 201010142894A CN 101845941 A CN101845941 A CN 101845941A
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- China
- Prior art keywords
- drill string
- drilling
- damping rib
- transverse
- shock absorber
- 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.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 52
- 230000035939 shock Effects 0.000 title abstract 9
- 239000006096 absorbing agent Substances 0.000 title abstract 5
- 238000013016 damping Methods 0.000 claims abstract description 59
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 4
- 239000011435 rock Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 6
- 230000035515 penetration Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
A drill stem transverse shock absorber for gas drilling relates to the technical field of design and manufacture of a gas drilling drill stem transverse shock absorption device, adopts a fluid numerical simulation technology, designs a drill stem transverse shock absorber capable of reducing transverse vibration of a drill stem and enabling rock debris to smoothly pass through, and comprises a shock absorber body and a shock absorption edge sleeve, wherein the shock absorber body is provided with a limiting ring and an inclined key groove, and the shock absorption edge sleeve is provided with a shock absorption edge; the invention solves the problems of large transverse amplitude and high vibration frequency of the drill string caused by no damping vibration attenuation function of the drilling fluid, the flow channel space of the invention is similar to an annular space, the invention has better debris circulation, can effectively reduce the transverse vibration of the drill string, and prolongs the service life of a lower drilling tool.
Description
Technical field:
A kind of drill string transverse damper that is used for gas drilling, the oil/gas drilling when being used for gas as circulatory mediator relates to the design and manufacturing technology field of the horizontal damping device of gas drilling drill string.
Background technology:
In drilling operation course, conventional drillng operation all needs to adopt the circulatory mediator of drilling mud as drilling well, drilling fluid can play the effect of cooling drilling tool in drilling process, the more important thing is that the drilling cuttings that drill bit can be pulverized takes ground out of, play the effect of cleaning pit shaft, and the drilling fluid in the pit shaft can also play the supporting role to drilling tool in the process of drilling well, reduces the vibrations of drilling tool; But the conventional drilling fluid that adopts has bigger limitation as the technology of drilling well medium on the drilling machinery drilling speed, can not significantly improve bit speed, particularly on some hard stratum, rate of penetration is very slow, therefore, is difficult to satisfy the speed of economic development to energy demand; At present, because gas obtains conveniently, have the little characteristics of proportion, can increase substantially the rate of penetration of drilling well, therefore, external a large amount of using gases is as the medium of drilling process, domesticly also promotes the use of gas as the drilling well medium a large amount of, this boring method can improve bit speed more than 4 times than the boring method of conventional drilling liquid, has therefore significantly improved the rate of penetration of drilling well; But, using gases is during as the drilling well medium, owing to lack the damping vibration attenuation function of drilling fluid in the pit shaft, therefore, cause the amplitude of drill string oscillation crosswise very big, vibration frequency is very high, compare with mud drilling, the amplitude horizontal owing to drill string is big, the frequency height, therefore this is to cause drill string to connect one of principal element of screw thread fatigue fracture and the damage of other types drill string.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, on the kinematic basis of drill string, adopt the fluid numerical simulation technology, designed and a kind ofly can reduce the drill string oscillation crosswise, landwaste is passed through smoothly, can also take into account the drill string transverse damper that is used for gas drilling of stabilizer usefulness.
The present invention is achieved in that the present invention is made of a short circuit and shock-absorbing sleeve, it is characterized in that: described short circuit comprises a damper body 1 and damping rib cover 3, be provided with spacing collar 2 and taper key groove 6 at the two ends of damper body 1, the length between the two ends spacing collar 2 is greater than the length of damping rib cover 3; Described damping rib cover 3 is hollow oblique arc waist drum shape structures, and damping rib cover 3 is provided with damping rib 4, and the damping rib overlaps to justify in 3 two ends and is provided with oblique protruding key 5;
In described damping rib cover 3 spacing collars 2 that are sleeved on the damper body 1;
Described taper key groove 6 is arranged in the spacing collar 2 on the damper body 1;
The shape of described taper key groove 6 matches with the shape of oblique protruding key 5;
Length between the spacing collar 2 is greater than the length of damping rib cover 3, and this distance is damping rib cover stroke, and spacing collar 2 connects with body by screw thread;
Under normal condition, the damping rib overlaps 3 archwise waist drum shapes, in drilling process, owing to there is not the cushioning effect of drilling fluid during gas drilling in the pit shaft, cause drillstring vibrations, the present invention is connected on assigned address in the drill string, when damping rib 4 bore pressure, damping rib 4 is inside flexing just, is affixed to body, because the length between the twice spacing collar 2 is greater than the length of damping rib cover 3, so damping rib cover 3 can move to two when receiving pressure, when the two ends of damping rib cover 3 arrived spacing collar 2, spacing collar 2 limited its shift motion, make damping rib 4 undergauges absorb the energy of drill string oscillation crosswise, thereby reduce the drill string oscillation crosswise; In the last process of carrying drilling tool, damping rib 4 can make the reduced of damping rib cover 3 to extending down in restricted portion, therefore, can not cause down hole problem; Be arranged on oblique protruding key 5 and the body 1 in the damping rib cover 3 taper key groove 6 mutually, can play the effect of transfer torque, make the damping rib overlap 3 and rotate along with the rotation of drilling tool, therefore, can eliminate the off-centre of drill string, reduce the wearing and tearing of drill string, can also revise the borehole wall, help the operation of drilling well later stage.
Advantage of the present invention and beneficial effect are: the damping rib is designed to arc waist drum shape structure, except that the support section at two ends, the damping rib does not contact with body, and flow channel space is similar to annular space, therefore the debris flow of high-speed mobile can not be blocked, and has the debris flow general character preferably; To reduce the oscillation crosswise of drill string greatly, prolong lower drilling tool application life; Oblique protruding key 5 and the taper key groove 6 of design mutually can transfer torque, makes the damping rib overlap 3 and rotates with drilling tool, has the wearing and tearing that reduce drill string and the important function of the correction borehole wall.
Description of drawings:
Fig. 1 is a main TV structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the damping rib cover of the present invention of amplification.
Fig. 3 is suit damping rib when cover main body structure schematic diagram of the present invention.
Fig. 4 is the right view of Fig. 2 of the present invention.
The specific embodiment:
Provide embodiments of the invention below in conjunction with accompanying drawing: basis is suitable novel to be made of a short circuit, short circuit comprises damper body 1 and damping rib cover 3, damper body 1 is provided with twice spacing collar 2 and taper key groove 6, spacing collar 2 connects with damper body 1 by screw thread, length between the twice spacing collar 2 is greater than the length of damping rib cover 3, this distance is damping rib cover stroke, and damping rib cover 3 is sleeved in the damper body 1 twice spacing collar 2; Purpose for damping, damping rib cover 3 is provided with and is mutually 90 ° of damping ribs 4 that rearrange, and the damping rib overlaps to justify in 3 two ends and is provided with oblique protruding key 5, and the shape of the taper key groove 6 of setting matches with the shape of oblique protruding key 5, during assembling, oblique protruding key 5 is allocated in the taper key groove 6; In order to reach the purpose of shrinking damping, damping rib cover 3 is hollow oblique arc waist drum shape structures;
Operating principle of the present invention is as follows: the present invention forms a damping rib cover 3 by four rubber-like damping ribs 4, under normal condition, 3 one-tenth oblique arc waist drum shapes of damping rib cover, rubber-like damping rib 4 is made for spring steel, and has set elastic buckling thresholding force value in advance; In drilling process, because the cushioning effect of no drilling fluid in the gas drilling pit shaft, cause drillstring vibrations serious, the present invention is connected on assigned address in the drill string according to the needs of drilling assembly, when damping rib 4 bears thresholding force value pressure, damping rib 4 is inside flexing just, be affixed to body, because the length between the two ends spacing collar 2 greater than the length of damping rib cover 3, can move to two so the damping rib overlaps 3, when the two ends of damping rib cover 3 arrive spacing collar 2, spacing collar 2 limits its shift motion, thereby reach the purpose of damping rib 4 undergauges, the elasticity undergauge of damping rib 4 can absorb the energy of drill string oscillation crosswise, thereby reduces the horizontal vibration of drill string; When on when carrying drilling tool and making the power of bearing on the damping rib 4 reach the thresholding pressure of setting, damping rib 4 can make the reduced of damping rib cover 3 to extending down in restricted portion, therefore, can not cause because the down hole problem that damper brings; Taper key groove 6 on oblique protruding key 5 in the damping rib of the present invention cover 3 and the body mutually, can play the effect of transfer torque, when drilling tool rotates, the damping rib that is sleeved on the body 1 overlaps 3 also along with rotation, therefore, not only can eliminate the off-centre of drill string, reduce the wearing and tearing of drill string, can also revise the borehole wall, help the operation of drilling well later stage.
Claims (4)
1. drill string transverse damper that is used for gas drilling, constitute by short circuit and shock-absorbing sleeve, it is characterized in that: described short circuit comprises a damper body, is provided with spacing collar and taper key groove at damper body two ends, and the length between the spacing collar is greater than the length of damping rib cover; Described shock-absorbing sleeve is a waist drum type structure, and damping rib cover is provided with the damping rib, and circle is provided with oblique protruding key in the damping rib cover two ends.
2. the drill string transverse damper that is used for gas drilling according to claim 1 is characterized in that: in described damping rib cover 3 spacing collars 2 that are sleeved on the damper body 1.
3. the drill string transverse damper that is used for gas drilling according to claim 1 is characterized in that: described taper key groove is arranged in the spacing collar on the damper body.
4. the drill string transverse damper that is used for gas drilling according to claim 1 is characterized in that: the shape of described taper key groove matches with the shape of oblique protruding key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010142894A CN101845941A (en) | 2010-04-07 | 2010-04-07 | Drill string lateral shock absorber for gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010142894A CN101845941A (en) | 2010-04-07 | 2010-04-07 | Drill string lateral shock absorber for gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101845941A true CN101845941A (en) | 2010-09-29 |
Family
ID=42770731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010142894A Pending CN101845941A (en) | 2010-04-07 | 2010-04-07 | Drill string lateral shock absorber for gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101845941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061908A (en) * | 2010-11-02 | 2011-05-18 | 中国石油集团川庆钻探工程有限公司 | Axial shock absorber suitable for measurement while drilling instrument |
| CN112196934A (en) * | 2020-10-09 | 2021-01-08 | 天津立林石油机械有限公司 | Multi-dimensional composite shock absorber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2258052A (en) * | 1940-01-15 | 1941-10-07 | Jesse E Hall | Spiral guide and tubing holder |
| US2867280A (en) * | 1955-01-13 | 1959-01-06 | Paul A Medearis | Scratcher construction for abrading well bore holes |
| US20040112592A1 (en) * | 2000-09-06 | 2004-06-17 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub |
| CN2746115Y (en) * | 2004-10-29 | 2005-12-14 | 梁伟成 | Rubber vibration damping type centering guide |
-
2010
- 2010-04-07 CN CN201010142894A patent/CN101845941A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2258052A (en) * | 1940-01-15 | 1941-10-07 | Jesse E Hall | Spiral guide and tubing holder |
| US2867280A (en) * | 1955-01-13 | 1959-01-06 | Paul A Medearis | Scratcher construction for abrading well bore holes |
| US20040112592A1 (en) * | 2000-09-06 | 2004-06-17 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub |
| CN2746115Y (en) * | 2004-10-29 | 2005-12-14 | 梁伟成 | Rubber vibration damping type centering guide |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061908A (en) * | 2010-11-02 | 2011-05-18 | 中国石油集团川庆钻探工程有限公司 | Axial shock absorber suitable for measurement while drilling instrument |
| CN102061908B (en) * | 2010-11-02 | 2014-02-26 | 中国石油集团川庆钻探工程有限公司 | Axial shock absorber suitable for measurement while drilling instrument |
| CN112196934A (en) * | 2020-10-09 | 2021-01-08 | 天津立林石油机械有限公司 | Multi-dimensional composite shock absorber |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100929 |