CN106639910B - A kind of drill string Multistage damping device - Google Patents
A kind of drill string Multistage damping device Download PDFInfo
- Publication number
- CN106639910B CN106639910B CN201611003704.XA CN201611003704A CN106639910B CN 106639910 B CN106639910 B CN 106639910B CN 201611003704 A CN201611003704 A CN 201611003704A CN 106639910 B CN106639910 B CN 106639910B
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- China
- Prior art keywords
- damper cylinder
- cylinder
- damper
- drill string
- splined shaft
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- 238000013016 damping Methods 0.000 title claims abstract description 56
- 230000035939 shock Effects 0.000 claims abstract description 24
- 239000011324 bead Substances 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 238000005553 drilling Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
Abstract
The invention discloses a kind of drill string Multistage damping devices, drill string connecting rod is fixedly connected with damper cylinder one, aero-mechanical formula damper is provided between damper cylinder one and damper cylinder two, the elastic shock attenuation cylinder is provided in the damper cylinder two, damper cylinder two is connect with the damper cylinder three, and hydraulic spring type damper is provided in damper cylinder three, splined shaft is arranged in the damper cylinder one, damper cylinder two and damper cylinder three, and the outer end of splined shaft is provided with spline.The present invention is by way of setting aero-mechanical formula damper and hydraulic spring type damper combine, and it assists using the elastic shock attenuation cylinder and elastic shock attenuation bar of connection pin connection, realize the effect of Multistage damping, it can be very good to meet the deep-well even drilling requirements of ultradeep well, the service life for effectively raising drill string reduces the vibration of drill string, furthermore, the present invention is also provided with damping spring, further improves its damping effect.
Description
Technical field
The present invention relates to a kind of drill string Multistage damping devices, belong to drilling equipment technical field.
Background technique
Drill string is the general name of drill bit or more, tap steel pipe column below.Drill string mainly includes kelly bar, drilling rod, drill collar
Equal drilling wells apparatus.In the drilling process of practical deep-well, subsurface environment very severe causes the stress condition of drill string very multiple
Miscellaneous, drill string always subjects the load such as pressure, pulling force, bending, torsion.Under the influence of these loads, drill string is being drilled down into
During often along with unstable vibrational state.Drillstring vibrations form mainly has following three kinds：Extensional vibration, transverse direction
Vibration, twisting vibration.And for straight well, drill string fatigue destroys mainly as caused by method of longitudinal vibration of drilling string.Drill string longitudinally shakes
It is dynamic to carry out in the axial direction.Its vibration shape is like that suspended on weight in lower spring end vibrating up and down.Drill string
Extensional vibration is a kind of vibration mode of drillstring vibrations most serious in straight well drilling well.
The extensional vibration of drill string can make the bit pressure being added on drill bit uneven, and drill bit is jumped out of because of the high vibration of drill string
Shaft bottom, impact force will make drill bit accelerated wear test, and the service life of such drill bit will shorten, also result in drill bit total footage and
Rate of penetration sharp fall.When drillstring vibrations are excessively fierce, the high vibration of drilling machine and derrick can be caused, thus to ground
Equipment also has certain brokenization.The jointing between drill string and drill string is also resulted in while drill string high vibration to occur to break
The fracture of damage, usually drill collar and drill rod breaking.Itself extensional vibration frequency of extensional vibration frequency and drill string caused by drill bit connects
When close, longitudinal resonance will occur for drill string.When the longitudinal acutely resonance of drill string, power suffered by drill string can be very big, the vibration of drill string
Dynamic amplitude also can be very big, and which results in the fracture of drill string or the generations of thread gluing phenomenon.
So improving drilling efficiency in order to reduce drilling cost and developing drilling technology, need to design drill string damping dress
It sets, current drill string damping device generally uses level-one shock-damping structure, for example uses single hydraulic spring type damper, air
Mechanical damper and full hydraulic damper, these dampers reduce the shock loading of drill string to a certain extent, still,
In deep-well and the probing of 6000-9000m ultradeep well within the scope of 4500-6000m, this single damper has been difficult to full
Sufficient damping needs, and drill string is still easy to appear fracture or thread gluing phenomenon, therefore, need to design a kind of novel Multistage damping device,
To meet the needs of deep drilling exploration.
Summary of the invention
Present invention problem in view of the prior art, provides a kind of drill string Multistage damping device, it is therefore an objective to meet deep drilling exploration
Needs, intend to solve problem of the existing technology.
To achieve the above object, the present invention provides the following technical solutions：A kind of drill string Multistage damping device comprising drill string
Connecting rod, damper cylinder one, aero-mechanical formula damper, elastic shock attenuation cylinder, damper cylinder two, splined shaft, hydraulic spring type damper,
Damper cylinder three and spline, which is characterized in that the drill string connecting rod is fixedly connected with the damper cylinder one, the damping
It is provided with the aero-mechanical formula damper between cylinder one and the damper cylinder two, is arranged in the damper cylinder two
The elastic shock attenuation cylinder stated, the damper cylinder two are connect with the damper cylinder three, and are provided with liquid in the damper cylinder three
Pressing spring formula damper, the splined shaft are arranged in the damper cylinder one, damper cylinder two and damper cylinder three, the flower
The outer end of key axis is provided with spline.
Further, preferably, the one end of the damper cylinder one far from the drill string connecting rod is stepped hole, and damping
Positioning is provided with link block in cylinder one, and the separate splined end of the splined shaft is provided with positioning protrusion, the positioning protrusion
Aero-mechanical formula damper is provided between the link block, the damper cylinder two is set in the damper cylinder one
Interior, and scalable setting between damper cylinder one and damper cylinder two, the position being located in damper cylinder two on the splined shaft is also solid
Surely it is provided with nut, the nut is provided with elastic shock attenuation cylinder close to the end of spline, and the elastic shock attenuation cylinder is set in bullet
Property decoupling rod on, the elastic shock attenuation rod set is located on connecting cylinder, and the connecting cylinder is set on the splined shaft,
The splined shaft is radially provided with pin hole, and connecting pin is provided in the pin hole, and the connecting pin is threaded through institute
On the connecting cylinder and splined shaft stated, so that connecting cylinder to be fixed on the splined shaft, damping is located on the splined shaft
Position in cylinder three is provided with protrusion, and positioning is provided with hydraulic spring type damper, damper cylinder two and damping in the protrusion
Scalable setting between cylinder three.
Further, it preferably, the splined shaft is two sections, and is set between the splined shaft of both ends using the connection of damping link block
It sets, and is provided with damping spring in damping link block, damping spring is located between two sections of splined shafts.
Further, it is threadedly coupled preferably, being used between the drill string connecting rod and the damper cylinder one.
Further, preferably, being provided with retention bead in the damper cylinder two, the retention bead is for blocking
The nut.
Further, preferably, the damping spring is disc spring.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is setting aero-mechanical formula damper and by way of hydraulic spring type damper combines, and assist with
Using the elastic shock attenuation cylinder and elastic shock attenuation bar of connection pin connection, the effect of Multistage damping is realized, can be very good to meet deep
The well even drilling requirements of ultradeep well effectively raise the service life of drill string, reduce the vibration of drill string, in addition, of the invention
It is also provided with damping spring, further improves its damping effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of drill string Multistage damping device of the invention；
Wherein, 1, drill string connecting rod, 2, damper cylinder one, 3, link block, 4, aero-mechanical formula damper, 5, positioning protrusion,
6, nut, 7, elastic shock attenuation cylinder, 8, elastic shock attenuation bar, 9, connecting pin, 10, damper cylinder two, 11, splined shaft, 12, damping spring,
13, damping link block, 14, hydraulic spring type damper, 15, damper cylinder three, 16, spline, 17, connecting cylinder, 18, retention bead.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：A kind of drill string Multistage damping device comprising drill string connection
Bar 1, damper cylinder 1, aero-mechanical formula damper 4, elastic shock attenuation cylinder 7, damper cylinder 2 10, splined shaft 11, hydraulic spring type subtract
Shake device 14, damper cylinder 3 15 and spline 16, which is characterized in that the drill string connecting rod 1 and the fixed company of the damper cylinder 1
It connects, the aero-mechanical formula damper 4 is provided between the damper cylinder 1 and the damper cylinder 2 10, it is described
The elastic shock attenuation cylinder 7 is provided in damper cylinder 2 10, the damper cylinder 2 10 is connect with the damper cylinder 3 15, and
Be provided with hydraulic spring type damper 14 in the damper cylinder 3 15, the splined shaft be arranged in the damper cylinder one,
In damper cylinder two and damper cylinder three, the outer end of the splined shaft is provided with spline 16.
In the present embodiment, the one end of the damper cylinder 1 far from the drill string connecting rod 1 is stepped hole, and damping
Positioning is provided with link block 3 in cylinder 1, and the separate splined end of the splined shaft 11 is provided with positioning protrusion 5, the positioning
Aero-mechanical formula damper 4 is provided between protrusion 5 and the link block 3, the damper cylinder 2 10 is set in described
In damper cylinder 1, and scalable setting between damper cylinder 1 and damper cylinder 2 10, damper cylinder is located on the splined shaft 11
Position in two is further fixedly arranged on nut 6, and the nut 6 is provided with elastic shock attenuation cylinder 7, the bullet close to the end of spline
Property damper cylinder set 7 be located on elastic shock attenuation bar 8, the elastic shock attenuation bar 8 is set on connecting cylinder 17, and the connecting cylinder
17 are set on the splined shaft, and the splined shaft is radially provided with pin hole, and connection is provided in the pin hole
Pin 9, the connecting pin 9 are threaded through on the connecting cylinder and splined shaft, so that connecting cylinder to be fixed on to the splined shaft
On, the position in damper cylinder three is located on the splined shaft 11 and is provided with protrusion, positioning is provided with hydraulic in the protrusion
Spring type shock absorber 14.It uses and is threadedly coupled between the drill string connecting rod and the damper cylinder one.The damper cylinder two
It is inside provided with retention bead 18, the retention bead 18 is used to block the nut.The damping spring is disc spring, damping
Scalable setting between cylinder two and damper cylinder three.
Wherein, embodiment as one preferred, the splined shaft are two sections, and are connected between the splined shaft of both ends using damping
Block connection setting is connect, and is provided with damping spring 12 in damping link block, damping spring 12 is located between two sections of splined shafts.
When extensional vibration occurs in drill string, drill string connecting rod 1 pushes damper cylinder one to vertically move, one 2 pairs of air of damper cylinder
Mechanical damper applied force, aero-mechanical formula damper carry out cushioning effect, damper cylinder one and damper cylinder two to damper cylinder one
Between stretch damping, if damping force between the two is less than vibration force, the nut of the splined shaft in damper cylinder two compresses bullet
Property damper cylinder and elastic shock attenuation bar, further progress damping, if vibration force cannot still be eliminated, nut applies damper cylinder two
Power, damping spring play damping effect, if vibration force cannot still be eliminated, damper cylinder two utilizes three applied force of damper cylinder
The further damping of hydraulic spring type damper meets the deep-well even probing of ultradeep well to adapt to the needs of larger vibration
Demand.
The present invention is incorporated by way of setting aero-mechanical formula damper and hydraulic spring type damper combine
Damping spring realizes the effect of Multistage damping, can be very good to meet the deep-well even drilling requirements of ultradeep well, effectively mention
The high service life of drill string, reduces the vibration of drill string.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of drill string Multistage damping device comprising drill string connecting rod, damper cylinder one, aero-mechanical formula damper, elasticity subtract
Shake cylinder, damper cylinder two, splined shaft, hydraulic spring type damper, damper cylinder three and spline, which is characterized in that the drill string connects
Extension bar is fixedly connected with the damper cylinder one, and the sky is provided between the damper cylinder one and the damper cylinder two
Gas mechanical damper, is provided with the elastic shock attenuation cylinder in the damper cylinder two, the damper cylinder two and described
Damper cylinder three connects, and hydraulic spring type damper is provided in the damper cylinder three, and the splined shaft is arranged described
Damper cylinder one, in damper cylinder two and damper cylinder three, the outer end of the splined shaft is provided with spline；The damper cylinder one is separate
One end of the drill string connecting rod is stepped hole, and positioning is provided with link block in damper cylinder one, the splined shaft it is remote
Splined end is provided with positioning protrusion, aero-mechanical formula damping is provided between the positioning protrusion and the link block
Device, the damper cylinder two is set in the damper cylinder one, and scalable setting between damper cylinder one and damper cylinder two, institute
It is located at the position in damper cylinder two on the splined shaft stated and is further fixedly arranged on nut, the nut is arranged close to the end of spline
Flexible damper cylinder, the elastic shock attenuation cylinder are set on elastic shock attenuation bar, and the elastic shock attenuation rod set is located at connecting cylinder
On, and the connecting cylinder is set on the splined shaft, the splined shaft is radially provided with pin hole, the pin
Connecting pin is provided in hole, the connecting pin is threaded through on the connecting cylinder and splined shaft, so that connecting cylinder to be fixed on
The position being located in damper cylinder three on the splined shaft, on the splined shaft is provided with protrusion, positions in the protrusion
It is provided with hydraulic spring type damper, scalable setting between damper cylinder two and damper cylinder three.
2. a kind of drill string Multistage damping device according to claim 1, it is characterised in that：The splined shaft is two sections,
And using the connection setting of damping link block between the splined shaft of both ends, and damping spring, damping spring are provided in damping link block
Between two sections of splined shafts.
3. a kind of drill string Multistage damping device according to claim 1, it is characterised in that：The drill string connecting rod and institute
Using threaded connection between the damper cylinder one stated.
4. a kind of drill string Multistage damping device according to claim 1, it is characterised in that：It is set in the damper cylinder two
It is equipped with retention bead, the retention bead is used to block the nut.
5. a kind of drill string Multistage damping device according to claim 2, it is characterised in that：The damping spring is dish
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003704.XA CN106639910B (en) | 2016-11-15 | 2016-11-15 | A kind of drill string Multistage damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003704.XA CN106639910B (en) | 2016-11-15 | 2016-11-15 | A kind of drill string Multistage damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106639910A CN106639910A (en) | 2017-05-10 |
| CN106639910B true CN106639910B (en) | 2018-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611003704.XA Active CN106639910B (en) | 2016-11-15 | 2016-11-15 | A kind of drill string Multistage damping device |
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| Country | Link |
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| CN (1) | CN106639910B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749627B (en) * | 2020-07-06 | 2021-12-14 | 云南铜业矿产资源勘查开发有限公司 | Drilling rod vibration damper for exploration |
| CN115930108A (en) * | 2020-12-03 | 2023-04-07 | 贺治鹏 | Multistage damping device of drilling string |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2911171Y (en) * | 2005-12-09 | 2007-06-13 | 四川石油管理局川东开发公司 | Tubing string dampener |
| CN101775962B (en) * | 2010-02-05 | 2013-03-27 | 北京中创欣联合科技发展有限公司 | Active shock absorber for oil drilling |
| US9328567B2 (en) * | 2012-01-04 | 2016-05-03 | Halliburton Energy Services, Inc. | Double-acting shock damper for a downhole assembly |
| CN202673216U (en) * | 2012-06-14 | 2013-01-16 | 中国石油集团长城钻探工程有限公司 | Large displacement well vibration tool |
| CN105909186B (en) * | 2016-04-29 | 2017-12-19 | 中石化石油机械股份有限公司研究院 | Can pressure release type drill-string shock absorbers |
| 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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| CN106639910A (en) | 2017-05-10 |
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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 | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20191127 Address after: No. 2, Chaoyang Road, the economic development zone of the river an County, Chuzhou, Anhui Patentee after: CHUZHOU BAODAO COLD-ROLLED SPECIAL TYPE STEEL STRIP CO.,LTD. Address before: 213016 Baiyun university campus, Changzhou University, Changzhou, Jiangsu Patentee before: Changzhou University |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A multi-stage shock-absorbing device for drill string Granted publication date: 20181127 Pledgee: Lai An county Jinan financing Company limited by guarantee Pledgor: CHUZHOU BAODAO COLD-ROLLED SPECIAL TYPE STEEL STRIP CO.,LTD. Registration number: Y2024980007695 |