CN206190211U - Instrument of hindering falls in antifriction - Google Patents
Instrument of hindering falls in antifriction Download PDFInfo
- Publication number
- CN206190211U CN206190211U CN201621275280.8U CN201621275280U CN206190211U CN 206190211 U CN206190211 U CN 206190211U CN 201621275280 U CN201621275280 U CN 201621275280U CN 206190211 U CN206190211 U CN 206190211U
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- roller
- antifriction
- tool body
- steering base
- instrument
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Abstract
The utility model discloses an instrument of hindering falls in antifriction, including tool body and roller, be provided with the roller on the outer wall of instrument of hindering falls in antifriction body, its characterized in that: be provided with a set of roller that turns to at least on tool body's the outer wall, turn to the roller by the roller with turn to the seat constitute, the roller is installed on turning to the seat through rotating to connect, it is rotatory that the roller can turn to the seat relatively, the rotation axis that the rotation axis of roller turned to the seat relatively has the skew, and the offset is greater than the radial eighth of roller, it installs on tool body's outer wall through rotating to connect to turn to the seat, it can the free rotation to turn to a relative tool body, it sets up back on tool body's outer wall to turn to the roller installation, the external diameter that the roller is confirmed is greater than the tool body external diameter. This instrument of hindering falls in antifriction's rolling element can turn to, and the antifriction that can obviously improve the drilling string is fallen and is hindered the effect.
Description
Technical field
The invention belongs to the drilling techniques such as petroleum gas, mine engineering, building foundation engineering construction, geology, hydrology neck
Domain, is concretely related to a kind of antifriction instrument.
Background technology
In the directional wells such as extended reach well, horizontal well, as well extends, the increase of well horizontal direction top offset amount,
Drill string is subject to well（The borehole wall）Frictional force also gradually increase.Frictional resistance in the directional wells such as extended reach well, horizontal well is big, moment of torsion
Height, after well reaches certain length, due to frictional force increase, the extension in well horizontal direction is limited.
The existing method for reducing drill string frictional resistance in the wellbore mainly has two kinds of instrument, and one kind is vibration antifriction work
Tool, another kind is to become the antifriction tool slided to roll.Vibration antifriction tool is to apply to swash by a small margin in some places of drill string
Vibrator is moved, and such instrument has hydroscillator, down-hole motor vibratory tool etc., and this kind of instrument is all to utilize waterpower（Drilling fluid）
Energy carrys out band power driven tools and produces impact or vibrate, and its major defect is：Tool interior structure is more complicated, and consumption is needed during tool work
Certain hydraulic energy, instrument has certain requirement to the pressure and performance of drilling fluid, and instrument may not work when well is too deep
Make etc..Latter becomes to be slided as the antifriction tool for rolling is to install rolling element in tool exterior wall mostly, and existing instrument all installs fixation
The rolling element in direction, these rolling elements can only be rolled towards a single direction（Such as CN201310020599.0）, work as drill string
Should be axially moved when rotating in a circumferential direction again, the rolling element that single direction is rolled will can only reduce the frictional resistance in one of direction,
And the frictional resistance in another direction of motion can not be reduced, even play detrimental effect sometimes.Such as it is only capable of subtracting along drill string axial rolling
The rolling element for rubbing, when drill string needs to rotate in a circumferential direction motion, rolling element can not play a part of antifriction during rotation, can also increase on the contrary
Plus potential safety hazard during drill string rotating, reduce reliability.
The content of the invention
It is an object of the invention to：The antifriction instrument that a kind of rolling element can be turned to is provided, to improve the antifriction of drill string
Resistance reducing effect.
The object of the invention is realized by following technical proposals：
A kind of antifriction instrument, including tool body and roller, are provided with rolling on the outer wall of antifriction tool body
Son, is provided with least one set of steering roller on the outer wall of tool body, turn to roller and be made up of roller and steering base, and roller passes through
Rotate connection to be arranged on steering base, roller can be relative to steering base rotation, the rotary shaft of the rotation axis with respect to steering base of roller
Line offsets, and offset distance, more than 1/8th of radius of roller, steering base is by rotating connection installed in the outer of tool body
On wall, steering base opposite tool this physical efficiency is rotated freely, and is turned to after roller is mounted on the outer wall of tool body, roller institute
The external diameter of determination is more than tool body external diameter.
To turn to roller, it is roller on this patent antifriction instrument compared with the beneficial effect of prior art：
1st, steering roller is provided with the antifriction instrument of this patent, the steering base of roller is turned to by rotating connection peace
On tool body, steering base opposite tool this physical efficiency is rotated freely, roller can relative steering base rotate, the rotary shaft of roller
Line offsets with respect to the rotation axis of steering base.This patent antifriction instrument is connected or on drill string, when this patent subtracts
Drop of the rubbing resistance tool contact borehole wall（Or sleeve pipe）When, the roller and the borehole wall of steering roller thereon（Or sleeve pipe）Contact, drill string is along brill
Post is axially moved, or rotation, or existing is axially moved again when having rotation, in the borehole wall（Or sleeve pipe）In the presence of reaction force, this
The steering roller of patent can be rotated around the axis of its steering base, and roller thereon is gone into the axis of roller perpendicular to relative well
The direction of wall motion, makes roller be rolled with respect to the direction that the borehole wall is moved along drill string on the borehole wall.No matter drill string with respect to well such as
What move, the steering roller on this patent in the presence of external force, by the power of the plane perpendicular to steering base axis（Component）'s
Effect, turning to roller will be rotated by promoting, and make the rotation axis of roller on steering roller all the time perpendicular to drill string with respect to well
The direction of eye movement, i.e. roller roll along drill string with respect to the direction of well motion all the time.The rotation axis phase of this patent roller
To the rotational axis offset of steering base, make steering roller that there is orientation self-regulation adaptation function, so, by drill string with respect to well
（The borehole wall）Sliding friction thoroughly changed into rolling friction, become that to slide be rolling, it can greatly reduce drill string rubbing with respect to well
Wipe and frictional resistance, reach the effect of antifriction.
2nd, using roller structure is turned on the antifriction instrument of this patent, make roller that there is orientation self-regulation self adaptation work(
Can, no matter how drill string moves, and it is with respect to well（The borehole wall）Motion be rolling, can solve in the prior art use fixation side
To rolling element structure can only alleviate frictional resistance problem on single movement direction.Meanwhile, the security reliability of this patent is substantially high
In prior art, because the rolling element of existing single fixed-direction has motion in other directions（Along the fortune of rolling element rotation axis
It is dynamic）When, easily cause influence and the accident for even dropping and producing bottom hole falling article of wearing and tearing of rolling element.Therefore, this patent antifriction drop
More preferably, more thoroughly, security reliability is higher for resistance effect.
3rd, using roller structure is turned on the antifriction instrument of this patent, make roller that there is orientation self-regulation self adaptation work(
Can, no matter how drill string moves, and it is with respect to well（The borehole wall）Motion be rolling.This can not only to the full extent reduce brill
Post and well（The borehole wall）Fretting wear and frictional resistance, moreover it is possible to reduce drill string to well（The borehole wall）Or the injury of sleeve pipe etc.：Will
Drill string and well（The borehole wall）Or it is changed into smooth pure rolling with respect to the hard grind produced by slip, the hard effect of scraping between sleeve pipe, can subtract
Drop of rubbing resistance, greatly reduces drill string and well（The borehole wall）Or mutual abrasion and destruction between sleeve pipe.Therefore, this patent can improve well
Eye quality, reduces wear-out failure, and reducing energy consumption extends Drill String Lifespan, increases economic efficiency.
Alternatively, the rotation axis of roller is less than roller diameter with respect to the offset distance between the rotation axis of steering base
8 times.Smoothly to be rotated to correct rotating direction when steering roller is worked, and good rolling orientation is kept, roller
Rotation axis can not be too small with respect to the offset distance between the rotation axis of steering base, and offset distance is more big more is easy to turn to the suitable of roller
Profit rotation, order about turn to roller rotate to the driving force of normal orientation also will be more sufficient, be also more easy to ensure to turn to roller in drill string
Good rolling orientation can be kept in the motion process for being axially moved, rotate or being not only axially moved but also rotated.But offset distance is not yet
Can be too big, too big offset distance will make steering roller occupy larger revolution space, cause the waste of its arrangement space.
Alternatively, 2/3rds of the proud exposure of roller opposite tool body no more than roller diameter.Wellbore construction
Complexity, the borehole wall is uneven, and the proud exposure of roller opposite tool body should not be too high.During roller is with respect to well rolling process,
Roller exposure is higher will to make it when the rough well section of the borehole wall is rolled across, and the depth that roller is absorbed in pit is deeper, when raised high
When degree is apparently higher than radius of roller, roller will be impacted and be stopped, easy damaged roller.And in the timing of borehole diameter one, roller
Proud exposure is higher, and tool body external diameter will be smaller, this by influence instrument intensity and security reliability.As further choosing
Select, the proud exposure of roller opposite tool body is no more than 1/2nd of roller diameter.
Alternatively, the roller tip circle for turning to roller is coplanar with the rotation axis of steering base.In the program, roller tip circle with
The rotation axis of steering base is coplanar, turning to after roller rotates to suitable rotating direction, enables the smooth rolling of roller, reduction or
Avoid roller that horizontal sliding occurs（Friction）.
In this patent, roller tip circle refers to circle determined by roller maximum outside diameter.When roller maximum outside diameter has many places or is
During one section of cylinder, the middle of maximum outside diameter section is at roller tip circle.Roller maximum outside diameter is roller outer diameter（Diameter）.
Alternatively, it is provided with flow path groove on the outer wall of antifriction tool body.The external diameter of antifriction instrument is general
Big compared with drill string external diameter elsewhere, the annular space between drill string and the borehole wall is larger to return passage on drilling fluid and landwaste etc.
External diameter will influence drilling fluid etc. on return.Setting flow path groove in the program, on the outer wall of antifriction tool body can increase
Plus the area of passage for returning drilling fluid, reduce hydraulic loss and throttle effect, be conducive on backflow the smooth flow of body,
Be conducive to the erosion for avoiding fluid to turning to roller on antifriction instrument.
Alternatively, be provided with least 2 rollers on same steering base, and roller rotation of the rotation axis with respect to steering base
Shaft axis offset to the same side.Used as further selection, the rotation axis of the multiple rollers on same steering base is parallel or revolves
Shaft axis are conllinear.
Alternatively, roller is turned to be arranged in staggeredly mode on the outer wall of antifriction tool body.In the program, turn
The arrangement coverage rate that can increase roller on antifriction tool periphery direction is arranged to the roller mode of interlocking, is conducive to raising to subtract
The circumferential order of contact of roller and well on drop of rubbing resistance instrument.
Alternatively, steering roller on the outer wall of antifriction tool body helically arrange by mode.
Alternatively, connected by axle between roller and steering base, for rotation is connected between axle and roller.Alternatively,
To be fixedly connected or axle and roller are integral type structure between axle and roller, connected to rotate between axle and steering base.As choosing
Select, to rotate connection between axle and roller, for rotation is connected between axle and steering base.
Alternatively, the tool body of antifriction instrument is formed by polylith column block spelling.In the program, tool body
Formed by polylith column block spelling, will columned tool body be decomposed into 2 pieces and more than 2 pieces of column block, can not tear open
In the case of solving continuous drill string, antifriction instrument is installed（Split）On drill string more long or continuous drill string.This can be reduced
The installation difficulty of instrument, saves the operating time, improves efficiency.Tool body is formed by polylith column block spelling, can be by the instrument
It is directly used in the construction operation of continuous pipe.
Alternatively, restricted steering roller is set between steering base and antifriction tool body and is turning to seat rotating axis
The locking mechanism of the motion on line direction.In the program, turn to roller and be arranged on tool body by steering base, with instrument sheet
Body is formed and rotates connection, to prevent steering roller from being come off along the direction play of steering base rotation axis or along axis, can turned to
Locking mechanism is set between the steering base and tool body of roller, in case turning to direction play of the roller along steering base rotation axis
Or come off, enhancing turns to the reliability and security of roller.Here locking refers to that will turn to roller along steering base rotation axis
Direction it is spacing, prevent turn to roller along steering base rotation axis direction play or come off, be not intended to limit steering roller it is relative
The rotation of tool body.
As further selection, locked using ball between steering base and antifriction tool body.In the program, ball
Locking can realize turning to roller along steering base rotation axis side while influence steering roller rotary motion is reduced as far as possible
To spacing and axial locking, and it is easy to processing.
Alternatively, it is provided with sealing structure between steering base and antifriction tool body.In the program, antifriction
It is in during tool work in the environment such as drilling fluid, landwaste, turning to roller can rotate relative to antifriction tool body, to prevent it
His material enters can be set between the steering base and the revolute of tool body that turn to roller between steering base and tool body
Sealing structure, to reduce the abrasion of revolute, extends the service life of revolute.
Alternatively, the rotation axis of the rotation axis of roller and steering base is different surface beeline, and roller rotation axis
And the rotation axis of steering base between angle is between 70-90 ° or is mutually perpendicular to.
Foregoing main scheme of the invention and its each further selection scheme can be this with independent assortment to form multiple schemes
Invention can be used and claimed scheme；And the present invention,（Each non conflicting selection）Between selection and and other selections between
Can also independent assortment.Those skilled in the art can understand have after the present invention program is understood according to prior art and common knowledge
Multiple combination, is claimed technical scheme of the invention, does not do poor herein.
Brief description of the drawings
Fig. 1 is the structural representation when bus of the outer surface of the roller of the embodiment of the present invention 1 is circular arc.
Fig. 2 is the structural representation that the present invention turns to roller.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the structural representation when bus of the outer surface of the roller of the embodiment of the present invention 1 is elliptic arc.
Fig. 5 is the structural representation of the steering base stepped axle journal shape of setting that the present invention turns to roller.
Fig. 6 is the structural representation of the embodiment of the present invention 2.
Fig. 7 is the structural representation of the embodiment of the present invention 3.
Fig. 8 is the parallel structural representation of the rotation axis of 4 two rollers of the embodiment of the present invention.
Fig. 9 is the conllinear structural representation of the rotation axis of 4 two rollers of the embodiment of the present invention.
Figure 10 is formed for the tool body of the embodiment of the present invention 5 by polylith column block spelling, uses what is be hinged between column block
Mode connects the structural representation of spelling.
Figure 11 is formed for the tool body of the embodiment of the present invention 5 by polylith column block spelling, and the structure fixed by banding is shown
It is intended to.
Figure 12 is that locking mechanism and sealing are provided between the embodiment of the present invention 6, the steering base of embodiment 7 and tool body
The structural representation of structure.
Figure 13 is schematic diagram when instrument is seen along the axial direction of instrument shown in Fig. 1.
In figure：1st, tool body, 2, turn to roller, 21, roller, 22, steering base, 23, roller rotating shaft line, 24, turn to
Seat rotating axis line, 3, be hinged, 4, cranse, 5, sealing structure, 6, locking mechanism.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
Embodiment 1：
Referring to figs. 1 to shown in 4, a kind of antifriction instrument, including tool body 1 and roller, antifriction tool body 1
Outer wall on be provided with roller, be provided with the outer wall of tool body 1 it is at least one set of turn to roller 2, turn to roller 2 by roller 21
Constituted with steering base 22, roller 21 is arranged on steering base 22 by rotating connection, roller 21 can rotate relative to steering base 22, roll
The rotation axis 23 of son 21 offsets with respect to the rotation axis 24 of steering base 22, and offset distance S is more than eight points of the radius of roller 21
One of, by rotating connection on the outer wall of tool body 1,22 opposite tool body of steering base 1 can be freely for steering base 22
Rotation.Alternatively, as shown in this embodiment, the steering base 22 of receiving matching steering roller 2 is correspondingly provided with tool body 1
Rotated on tool body 1 in hole, the patchhole of steering base 22.Steering base 22 can have diversified forms, and such as Fig. 5 is steering roller
To set stepped axle journal shape, Fig. 2,8 are cylinder to turn to the steering base 22 of roller 2 to 2 steering base 22.Turn to roller 2
After being mounted on the outer wall of tool body 1, as shown in figure 13, outside diameter d 1 determined by roller 21 is more than tool body external diameter
d2.Alternatively, the rotation axis 23 of roller 21 is less than roller 21 with respect to the offset distance S between the rotation axis 24 of steering base 22
8 times of diameter.Alternatively, the proud exposure of the opposite tool body 1 of roller 21（That is the half of the difference of d1 and d2）No more than rolling
2/3rds of sub 21 diameters.Used as further selection, the proud exposure of the opposite tool body 1 of roller 21 is straight no more than roller 21
/ 2nd of footpath.Alternatively, it is provided with flow path groove on the outer wall of antifriction tool body 1（Such as Fig. 1, Fig. 4）.As choosing
Select, roller 21 can be cylinder, and the bus of the outer surface of roller 21 can be circular arc（Such as Fig. 1）Or elliptic arc（Such as Fig. 4）
Deng.1 roller 21 can be set on same steering base 22, multiple rollers 21 are may also set up.Alternatively, the roller on steering base 22
21 is 1-6.Used as further selection, the roller 21 on steering base 22 is 1（Such as Fig. 1, Fig. 3, Fig. 4-7, Figure 10）, 2（Such as
Fig. 8, Fig. 9）Or 3.When roller 21 is 1, the tip circle of roller 21 and the rotation axis 24 of steering base 22 for turning to roller 2 are total to
Face.When roller 21 is for multiple, the rotation axis of multiple rollers offsets relative to the rotation axis 24 of steering base 22 to the same side.
Alternatively, the rotation axis of the multiple rollers on same steering base 22 is parallel（Such as Fig. 8）Or rotation axis is conllinear（Such as Fig. 9）.
Embodiment 2：
With reference to shown in Fig. 6, the present embodiment is substantially the same manner as Example 1, and its difference is：Roller 2 is turned in antifriction
Arranged in staggeredly mode on the outer wall of tool body 1.
Embodiment 3：
With reference to shown in Fig. 7, the present embodiment is substantially the same manner as Example 1, and its difference is：Roller 2 is turned in antifriction
Helically mode is arranged on the outer wall of tool body 1.
Embodiment 4：
The present embodiment is substantially the same manner as Example 1, and its difference is：Connected by axle between roller 21 and steering base 22,
For rotation is connected between axle and roller 21.Alternatively, between axle and roller 21 to be fixedly connected or axle is integrated with roller 21
Formula structure, for rotation is connected between axle and steering base 22.Alternatively, between axle and roller 21 it is rotation connection, axle and steering
For rotation is connected between seat 22.
Embodiment 5：
The present embodiment is substantially the same manner as Example 1, and its difference is：The tool body 1 of antifriction instrument is by polylith post
Shape block spelling is formed.Tool body 1 is formed by polylith column block spelling, will columned tool body be decomposed into 2 pieces and 2 pieces
Column block above, as shown in Figure 10, can connect spelling by the way of being hinged 3 between column block, or latch fixes splicing.Such as
Banding can be carried out shown in Figure 11, after column block spelling to fix.Also spelling can be connected using modes such as screw threads between column block.
Embodiment 6：
The present embodiment is essentially identical with embodiment 1 to 5, and its difference is：Steering base 22 and antifriction tool body 1 it
Between the locking mechanism 6 of restricted steering motion of the roller 2 on the direction of 22 rotation axis of steering base 24, such as Figure 12 are set.As
Selection, is locked between steering base 22 and antifriction tool body 1 using ball.
Embodiment 7：
The present embodiment is essentially identical with embodiment 1 to 6, and its difference is：Steering base 22 and antifriction tool body 1 it
Between be provided with sealing structure 5, such as Figure 12.
Embodiment 8：
The present embodiment is substantially the same manner as Example 1, and its difference is：The rotation axis 23 of roller 21 and the rotation of steering base 22
Shaft axis 24 are the angle between different surface beeline, and the rotation axis 23 of roller 21 and the rotation axis 24 of steering base 22 in 70-
Between 90 ° or it is mutually perpendicular to.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of antifriction instrument, including tool body and roller, roller is provided with the outer wall of antifriction tool body,
It is characterized in that：At least one set of steering roller is provided with the outer wall of tool body, roller is turned to and is made up of roller and steering base,
Roller is arranged on steering base by rotating connection, and roller can be relative to steering base rotation, and the rotation axis of roller is with respect to steering base
Rotation axis offset, and offset distance more than radius of roller 1/8th, steering base by rotate connection be arranged on instrument
On the outer wall of body, steering base opposite tool this physical efficiency is rotated freely, and is turned to roller and is mounted on the outer wall of tool body
Afterwards, external diameter determined by roller is more than tool body external diameter.
2. antifriction instrument as claimed in claim 1, it is characterised in that：It is provided with the outer wall of antifriction tool body
Flow path groove.
3. antifriction instrument as claimed in claim 1, it is characterised in that：At least 2 rollers are provided with same steering base,
And the rotation axis of roller offsets relative to the rotation axis of steering base to the same side.
4. antifriction instrument as claimed in claim 1, it is characterised in that：Turn to the roller tip circle of roller and the rotation of steering base
Shaft axis are coplanar.
5. antifriction instrument as claimed in claim 1, it is characterised in that：Roller is turned in the outer of antifriction tool body
Arranged or spiral way arrangement in staggeredly mode on wall.
6. antifriction instrument as claimed in claim 1, it is characterised in that：Connected by axle between roller and steering base, axle
Be connected to rotate between roller, or to be fixedly connected or axle and roller are integral type structure, axle and steering between axle and roller
For rotation is connected between seat.
7. antifriction instrument as claimed in claim 1, it is characterised in that：The tool body of antifriction instrument is by polylith post
Shape block spelling is formed.
8. antifriction instrument as claimed in claim 1, it is characterised in that：Set between steering base and antifriction tool body
It is equipped with the locking mechanism that limitation turns to motion of the roller on steering base rotation axis direction.
9. antifriction instrument as claimed in claim 8, it is characterised in that：Adopted between steering base and antifriction tool body
Locked with ball.
10. antifriction instrument as claimed in claim 1, it is characterised in that：Between steering base and antifriction tool body
It is provided with sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621275280.8U CN206190211U (en) | 2016-11-25 | 2016-11-25 | Instrument of hindering falls in antifriction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621275280.8U CN206190211U (en) | 2016-11-25 | 2016-11-25 | Instrument of hindering falls in antifriction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190211U true CN206190211U (en) | 2017-05-24 |
Family
ID=58723948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621275280.8U Active CN206190211U (en) | 2016-11-25 | 2016-11-25 | Instrument of hindering falls in antifriction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401479A (en) * | 2016-11-25 | 2017-02-15 | 西南石油大学 | Friction reducing and resistance lowering tool |
-
2016
- 2016-11-25 CN CN201621275280.8U patent/CN206190211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401479A (en) * | 2016-11-25 | 2017-02-15 | 西南石油大学 | Friction reducing and resistance lowering tool |
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