CN110295859A - A kind of rotation well-flushing tool with fluid damping deceleration device - Google Patents
A kind of rotation well-flushing tool with fluid damping deceleration device Download PDFInfo
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- CN110295859A CN110295859A CN201910721801.XA CN201910721801A CN110295859A CN 110295859 A CN110295859 A CN 110295859A CN 201910721801 A CN201910721801 A CN 201910721801A CN 110295859 A CN110295859 A CN 110295859A
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- spray head
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- deceleration device
- flushing tool
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- 238000013016 damping Methods 0.000 title claims abstract description 62
- 239000012530 fluid Substances 0.000 title claims abstract description 49
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 37
- 239000007921 spray Substances 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 20
- 238000004140 cleaning Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000004519 grease Substances 0.000 abstract description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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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)
- Nozzles (AREA)
Abstract
A kind of rotation well-flushing tool with fluid damping deceleration device, including main cylinder, fluid damping deceleration assembly, lower mandrel, bearing, lower contact, spray head and nozzle, the present invention is used to handle the pipe string internal walls attachment materials such as grease, cured dirt, rust deposite or the salt crust of oil/gas well flow string.On the one hand principle of conservation of momentum is utilized in rotation well-flushing tool in the present invention, the setting-up eccentricity nozzle on spray head, and axial, radial and circumferential three-dimensional velocity is generated when pushing fluid out spray head, and fluid matasomatism will drive spray head rotation in the circumferential reaction force of spray head；On the other hand, it will interact when spray head is rotated with by liquid with the coaxial mounted damping unit of spray head, and circumferential liquid resistance be generated, to reduce rotating speed of shower nozzle, prevent spray head rotation speed too fast, guarantee that liquid stream has certain standing current time when cleaning tube wall, thus the cleaning effect being optimal.
Description
Technical field
The invention belongs to oil and gas drilling project downhole tool technical fields, relate in particular to a kind of for washing
The rotation well-flushing tool of revolving speed can be controlled during well operations by fluid damping.
Background technique
Usually occur in oil/gas well, water injection well production process formation sand production, fouling, knot it is cured the problems such as, in addition, complete well,
The sand plug and sand card phenomenon occurred in well workover and other operations.Currently, continuous pipe sand-flushing operation has become site operation
A most base application, while be also various complex jobs in an essential important link.Well-flushing class operation is main
Grease, cured dirt, rust deposite or salt crust etc. for handling oil/gas well flow string are attached to the substance of pipe string internal wall.Continuous Guan Yugao
Pressure water jet cleaning technique, which combines, carries out tubing string cleaning compared to traditional cleaning way, and cleaning efficiency is high, easy to operate and not dirty
Contaminate environment.The basic principle is that projecting high-speed jet impact tubing string inner surface using cleaning means, collides, rubs with dirty dirt
It wipes, shearing, to achieve the purpose that cleaning and descaling.
Existing various well-flushing tools are divided into jet rose, swirl nozzle and swivel nozzle three classes sand-flushing work substantially
Tool.For jet rose tool, fluid generates throttling when passing through the spray orifice of spray head, forms high-speed jet, achievees the purpose that flushing,
It is most basic a kind of well-flushing form；For swirl nozzle tool, when work, fluid is occurred by making spigot, the track of fluid
Change, fluid is forced to flow along the guiding direction for making spigot, fluid generates three-dimensional velocity, i.e., axially, radial with rotation, finally
Tapered high speed ejection when fluid passes through nozzle, for the fluid ejected in coniform, the passability of tool is strong, can apply
In complicated well operations, there is certain rock breaking capacity, cleaning effect is good；It is eccentrically mounted due to nozzle in swivel nozzle tool,
It flows out fluid and generates reaction force driving sprinkler rotation, the control of speed is carried out by speed limit ring, prevents spray head rotation speed mistake
Fastly, guarantee there is certain standing current time when cleaning tube wall, to achieve the effect that cleaning.
A kind of high pressure hydrodynamic(al) rotating jet well washing apparatus of patent CN107747484A() disclose a kind of high pressure hydrodynamic(al) rotation
Jet washing well device, including segment port, bearing block, rotary shaft, linkage section and jet segment.Segment port upper end is provided with internal screw thread, under
End is provided with external screw thread, and segment port lower end is threadedly coupled with bearing block, and rotary shaft is fixed in bearing block by bearing, under rotary shaft
End is threadedly coupled with linkage section, and linkage section is threadedly coupled with jet segment, is equipped in lateral beveling hole and top in jet stream g. slice header
Heart hole.Segment port, rotary shaft, linkage section are provided with centre bore, flow for liquid.At work, high-pressure water pipe connects the device
Connect the connectivity port of segment port, high pressure water flow forms lateral beveling by the lateral beveling hole in jet segment and penetrate to after jet segment
Stream is quickly rotated by its power drive jet segment that recoils, and impact force is strong, compact-sized simple, cleans water injection well significant effect.It should
Device be substantially it is a kind of without rotation speed limiting function swivel nozzle tool, in use it is possible that revolving speed it is too fast without
Can guarantee and rinse liquid stream the residence time of tube wall the case where, even, it is larger in Fluid pressure and when keeping revolving speed too fast, eject
Flushing liquid stream will level off to spray pattern, substantially reduce its rinse capability.
A kind of hydraulic auto-rotation jet head for washing well of patent CN202108436U() disclose a kind of well-flushing hydraulic spinning turn
Spray head is made of spray head assembly, individual nozzle, central tube, speed limiting mechanism, check valve etc., and technical characteristic is: in the spy of spray head
Threaded hole is set out in positioning, is connected through a screw thread installation nozzle；Central tube both ends are equipped with rolling bearing, it is while conveying liquid
Play the role of rotary shaft again, the speed limiting mechanism in rotary shaft realizes centrifugation speed limit using friction block.The self-rotating nozzle is substantial
It is also a kind of swivel nozzle tool, with a kind of high pressure hydrodynamic(al) rotating jet well washing apparatus of patent CN107747484A() difference
Be the tool is internally provided with friction speed limiting mechanism, overcome revolving speed it is too fast and cannot be guaranteed flushing liquor stream staying in tube wall
The shortcomings that staying the time.But change patent simply by the mode speed limit tool of friction catch there are three disadvantage: frictional force is fixed,
It can not be automatically adjusted according to conditions such as pressure, the flow velocitys of the fluid in tubing string, it is narrow to be applicable in section；Frictional force from sleeve and
The generated heat of friction block can not be discharged in time, certainly will lead to the thermal wear of sleeve and friction block, on the one hand make sleeve and
Friction block all becomes vulnerable part, while greatly reducing the service life of tool, improve use cost and maintenance difficulties；Separately
On the one hand after sleeve and/or friction block are worn to a certain extent, frictional force therebetween will be reduced compared to preset value, make tool
Working performance be unable to get guarantee.
As spin rinse well tool, two above patent provides the mentality of designing with certain values, but is turning
There is very big defect in terms of speed control, revolving speed self-regulation and reliability, can not accomplish that realization turns on the basis of speed limit standing current
The automatic adjustment of speed, to be difficult to maximize the effect of the flushing manhole of performance tool.
Summary of the invention
The purpose of the present invention is to provide a kind of rotation well-flushing tool with fluid damping deceleration device, for handling oil
The pipe string internal walls attachment materials such as the grease of gas well liquid loading tubing string, cured dirt, rust deposite or salt crust.In this tool, on the one hand it is utilized dynamic
Conservation principle is measured, the setting-up eccentricity nozzle on spray head generates axial, radial and circumferential three-dimensional velocity when pushing fluid out spray head,
Fluid matasomatism will drive spray head rotation in the circumferential reaction force of spray head；On the other hand, with the coaxial mounted damping unit of spray head
It will interact when spray head is rotated with by liquid, and circumferential liquid resistance be generated, to reduce rotating speed of shower nozzle, prevent spray head from revolving
Rotary speed is too fast, guarantees that liquid stream has certain standing current time when cleaning tube wall, thus the cleaning effect being optimal.
The purpose of the present invention is achieved through the following technical solutions:
A kind of rotation well-flushing tool with fluid damping deceleration device, including main cylinder, fluid damping deceleration assembly, lower mandrel,
Bearing, lower contact, spray head and nozzle, wherein the fluid damping deceleration assembly includes upper mandrel, the sleeve for being mounted on mandrel
With damping vane, for limiting key, the spring pad for limiting blade and sleeve axial movement that blade and sleeve circumferentially rotate
Circle and end cap, lower contact are fixedly connected with main cylinder, and lower mandrel is fixedly connected with upper mandrel, and lower mandrel is fixedly connected with spray head, under
Center flow channels and bypass flow channel are offered on mandrel, and the center stream being connected to the lower mandrel center flow channels is offered on spray head
Road offers the water hole being connected with spray head center flow channels on spray head, and nozzle is fixed in the water hole on spray head.
In the present invention, the autonomous cylinder upper end of pressure fluid is flowed into, after the annular space between main cylinder and upper mandrel, Jing Xiaxin
Next to axis passage flow duct flows into lower mandrel center flow channels.Since lower mandrel is fixedly connected with spray head, in lower mandrel center flow channels and spray head
Heart runner Natural communication, pressure fluid will flow directly into spray head after the outflow of lower mandrel center flow channels, finally from being fixed on spray head
Nozzle outflow in water hole.
Preferably, offer at least two water holes on the spray head, and at least one described water hole axis with it is described
Spray head axis antarafacial.
In above scheme, by setting water hole axis and spray head axis antarafacial, (i.e. water hole is eccentric water hole, is overlooked in spray head
Show as between water hole axis and spray head axis that there are offset distances on figure or bottom view), (spray of pressure fluid mass flowing nozzle can be made
Mouth is fixed in water hole, and axis is overlapped with water hole axis) when, the velocity component along spray head circumferential direction is generated, according to the conservation of momentum
Law and Newton's third law, the liquid stream that self-bias edema with the heart involved hole is projected, which will generate, pushes spray head to push away around the circumferential direction that own axes rotate
Power, and torque is formed by eccentricity, that is, rotate the rotary driving force (torque) of well-flushing tool.On the other hand, due to damping leaf
It is to be fixedly connected between piece, upper mandrel, lower mandrel and spray head, so damping vane will be coaxially rotated with spray head.Also, resistance
Within annular space of Buddhist nun's blade in upper mandrel and main cylinder on spatial position, therefore the damping vane to rotate in a circumferential direction will be with script edge
Tool axis direction flows through the pressure fluid contact of annular space, and the liquid axially flowed will certainly interfere the damping leaf to rotate in a circumferential direction
Piece, i.e. liquid stream will apply the axial force (rotational resistance) opposite with blade direction of rotation to damping vane, to hinder
The rotation of blade.According to flow dynamics analysis as a result, in the case where the size and number of damping vane are certain, rotational resistance by
To the joint effect of flow rate of liquid and blade rotational speed, affecting laws are as follows: rotational resistance and flow rate of liquid and blade rotational speed at
Positive correlation.
It follows that rotating speed of shower nozzle is faster, blade rotational speed is faster；Blade rotational speed is faster, then rotational resistance suffered by blade is got over
Greatly, so that blade reduction of speed is faster.Under the rotational resistance collective effect suffered by the rotary driving force and blade of spray head, spray head turns
Speed will stabilise at specific level.It in the actual operation process, can be according to specific flow, by adjusting the vane size sum number
It measures to adjust the steady rotation speed of spray head, spray head rotation speed is made to be reduced to suitable section, in the base for realizing rotating jet
On plinth, guarantees to rinse liquid stream in the residence time of tube wall, the flushing liquid stream ejected is avoided to substantially reduce it because revolving speed is too fast
Rinse capability.
Further, offer a water hole of even number (be greater than or equal to 2) on the spray head, and every two water hole both with respect to
Tool axis is centrosymmetric arrangement.
In above scheme, by being arranged symmetrically spray head water hole, rotary driving force suffered by spray head can be made about tool axis
Balance adversely affects tool interior bearing and other machine components brings to reduce out-of-balance force.
Preferably, the angle between the water hole axis and the spray head axis is between 10 ° to 150 °.
In above scheme, under conditions of in water hole, axis is with spray head axis antarafacial, within the scope of 0 ° to 90 °, jet stream covers
Lid spray head space below (forward direction), and angle is bigger, rotary driving force is bigger；Within the scope of 90 ° to 150 °, jet stream covers spray head
Above space (reversed), and angle is bigger, rotary driving force is smaller.
Preferably, the nozzle minimum diameter is in 2mm between 20mm.
In above scheme, nozzle inside diameter will have a direct impact on the flow and effluxvelocity of well-flushing tool.In certain jet velocity
Under conditions of degree, small flow is using the nozzle of smaller interior warp, and after tested, the nozzle of 2mm internal diameter lower limit can meet most at present small
The engineering service condition of flow；Conversely, the well-flushing tool of large scale, big flow then needs the nozzle using larger interior diameter, 20mm
The nozzle of the internal diameter upper limit can meet the engineering service condition of most big flows at present.
Preferably, the sleeve and damping vane are circumferentially fixed in upper mandrel by key, pass through spring washer and end cap
It is fixed on mandrel.
In above scheme, be connected by key between upper mandrel and damping vane, sleeve it is relatively fixed with end cap, washer,
Middle key connection is circumferentially rotated for limiting blade and sleeve, and spring washer and end cap are for limiting blade and sleeve axial movement.
Preferably, damping vane and sleeve can arranged for interval or multiple damping vanes close to arrangement.
In above scheme, the effect of damping vane is to generate circumferential resistance to reduce rotating speed of shower nozzle, and sleeve acts on
In the extra axial space that filling damping vane is vacated in upper mandrel, cooperation damping vane uses, plays and freely adjust the number of blade
The effect of amount and blade arrangement mode.Damping vane and sleeve arranged for interval, it may be assumed that the arrangement of blade-sleeve-blade (the rest may be inferred by analogy)
Mode；Multiple blades are not installation sleeve between multiple adjacent blades close to arrangement, and remaining axial space all uses sleeve
Filling.The gear of damping is adjusted to be realized by the combination of different arrangement modes, such as upper mandrel has altogether and provides 7 installation positions, 1
Shelves damping is any position in 7 installation positions；3 grades may be configured as " sleeve 1- blade 1- sleeve 2- blade 2- sleeve 3-
The form of blade 3- sleeve 4 ", may be alternatively provided as " 1 sleeve 2- sleeve 3- sleeve 4 of blade 1- blade 2- blade 3- sleeve " and its
He is more multi-form；4 grades of forms that may be configured as " blade 1- sleeve 1- blade 2- sleeve 2- blade 3- sleeve 3- blade 4 ", can also
It is set as " sleeve 1- sleeve 2- sleeve 3- blade 1- blade 2- blade 3- blade 4 " and other is more multi-form；7 grades can only then set
It is set to " blade 1- ...-blade 7 " densely covered form.
Preferably, the bearing is mounted between main cylinder and lower mandrel.
In above scheme, bearing is mounted between main cylinder and lower contact, and is not provided with axis in upper mandrel upper end (at end cap)
It holds, so that upper mandrel upper end is as free end, it is therefore intended that increase the fluid percent of pass of tool, because if setting in upper mandrel upper end
Bearing has been set, then one of bypass flow channel must be set here more, and fluid dynamic energy will certainly be lost in the presence of bypass flow channel.Cause
Bearing arrangement setting is only conducive to fluid in tool lower end and passed through by this, especially under the application scenario for requiring huge discharge, this
The design of sample is advantageously.
Further, the axis that bearing can be connected in series for single rolling bearing, single tandem bearing or multiple rolling bearings
Hold group.
It is substantially that rotary part is in single holding state, therefore since bearing is provided only on tool lower end in above scheme
The case where tool radially wobbles because of fluid power effect during the work time must be taken into consideration.Under light duty, if swing is unobvious,
One bearing (such as deep groove ball bearing or angular contact bearing) then can be only set；If load is larger or radially wobbles and can not neglect
Depending on must then arrange that multiple conventional bearings make its series connection claim bearing group, or directly arrange a set of tandem bearing, to improve upper core
Stability of the rotary parts such as axis, lower mandrel in tool.
Compared with prior art, the beneficial effects of the present invention are:
(1) slowed down using hydraulic damping to rotary nozzle, rather than the reduction gear mechanisms such as conventional drag ring, dexterously realize
The reaction type adjustment mechanism of " revolving speed is faster, damps bigger " makes to rotate well-flushing tool speed all-the-time stable during the work time
The well washing effect of tool is greatly improved convenient for control jet stream in the residence time of tube wall in certain level；
(2) form slowed down using frictional force is avoided, the component of a large amount of frictional heat generations is not present in tool interior, on the one hand rotation resistance
Power because using time long friction component to reduce due to loss, does not on the other hand also make tool interior not because avoiding thermal wear from generating rapid wear
Part improves tool life from basic principle；
(3) damping vane is coupled with sleeve, so that tool interior rotational resistance can be adjusted on demand, passes through different combination sides
The resistance that each different stalls are adjusted can be obtained in formula, so that the ease for use of tool, scalability are splendid, the scope of application is broad；
(4) bearing arrangement setting allows tool to rotate in tool lower portion in the form that single-bearing supports, and main cylinder inner loop is absolutely empty
Between discharge completely, keep tool interior liquid stream unobstructed, throttle resistance is smaller, is more advantageous to the biggish workplace of discharge capacity；
(5) rotary driving force of tool and resistance recurring structure are simply direct, and manufacturing process is simple and use, maintenance are also very square
Just.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one, embodiment six.
Fig. 2 is the positional relationship bottom view of spray head and water hole thereon in the embodiment of the present invention two.
Fig. 3 is the positional relationship main view of spray head and water hole thereon in the embodiment of the present invention three.
Fig. 4 is the mounting structure schematic diagram of damping vane in the embodiment of the present invention four.
Fig. 5 is the mounting structure schematic diagram of damping vane in the embodiment of the present invention five.
Specific embodiment:
Following non-limiting examples are for illustrating the present invention.
Embodiment one:
As shown in Figures 1 to 5, a kind of rotation well-flushing tool with fluid damping deceleration device, including the resistance of main cylinder (1), liquid
Buddhist nun's deceleration assembly (2), lower mandrel (3), bearing (4), lower contact (5), spray head (6) and nozzle (7), the fluid damping are slowed down total
It include upper mandrel (21), the sleeve (22) for being mounted on upper mandrel (21) and damping vane (23), key (24), spring washer at (2)
(25) it being fixedly connected with end cap (26), lower contact (3) with the main cylinder (1), lower mandrel (3) is fixedly connected with upper mandrel (21),
Lower mandrel (3) is fixedly connected with spray head (6), offers center flow channels (31) and bypass flow channel (32), spray head on lower mandrel (3)
(6) center flow channels (61) being connected to lower mandrel center flow channels are offered on, are offered and spray head center flow channels on spray head (6)
(61) connected water hole (62), nozzle (7) are fixed in the water hole (62) on spray head (6) Nei.
Embodiment two:
As shown in Fig. 2, a kind of rotation well-flushing tool with fluid damping deceleration device, 6 water holes are offered on spray head (6)
(62), and all 6 water hole (62) axis and the spray head axis antarafacial.Wherein, e1, e2, e3 as shown in the figure are different water holes
The eccentricity of axis opposing showerhead axis.
Embodiment three:
As shown in figure 3, a kind of rotation well-flushing tool with fluid damping deceleration device, 6 water holes are offered on spray head (6)
(62), in which: the angle between the spray head bottom end water hole Liang Ge (62) axis and spray head (6) axis is 30 °, as shown in Fig. 3 (a)；
Angle in the middle part of spray head between two water hole (62) axis and spray head (6) axis is 60 °, as shown in Figure 3 (b)；Spray head top two
Angle between a water hole (62) axis and spray head (6) axis is 90 °, as shown in Figure 3 (c).
Example IV:
As shown in figure 4, a kind of rotation well-flushing tool with fluid damping deceleration device, sleeve (22) and damping vane (23) are logical
It is circumferentially fixed in upper mandrel (21) to cross key (24), upper mandrel (21) are axially fixed at by spring washer (25) and end cap (26).
It is wherein, fixed on upper mandrel (21) that there are four damping vane (23) and three sleeves (22), damping vane (23) and sleeves (22)
Arranged for interval.
Embodiment five:
As shown in figure 5, a kind of rotation well-flushing tool with fluid damping deceleration device, sleeve (22) and damping vane (23) are logical
It is circumferentially fixed in upper mandrel (21) to cross key (24), upper mandrel (21) are axially fixed at by spring washer (25) and end cap (26).
Wherein, seven damping vanes (23) are fixed on upper mandrel (21), damping vane (23) is close to arrangement.
Embodiment six:
As shown in Figure 1, a kind of rotation well-flushing tool with fluid damping deceleration device, bearing (4) is tandem deep groove ball bearing,
And it is mounted between main cylinder (1) and lower mandrel (3).
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (9)
1. a kind of rotation well-flushing tool with fluid damping deceleration device, it is characterised in that: including main cylinder (1), fluid damping
Deceleration assembly (2), lower mandrel (3), bearing (4), lower contact (5), spray head (6) and nozzle (7), the fluid damping deceleration assembly
It (2) include upper mandrel (21), the sleeve (22) for being mounted on mandrel (21) and damping vane (23), key (24), spring washer
(25) it is fixedly connected with end cap (26), the lower contact (3) with the main cylinder (1), the lower mandrel (3) and the upper mandrel
(21) it is fixedly connected, the lower mandrel (3) is fixedly connected with the spray head (6), offers center flow channels on the lower mandrel (3)
(31) and bypass flow channel (32) center flow channels (61) being connected to the lower mandrel center flow channels, are offered on the spray head (6)
And the water hole (62) being connected with spray head center flow channels (61), the nozzle (7) are fixed in the water hole (62) on spray head (6) Nei.
2. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
It states spray head (6) and offers at least two water holes (62), and at least one described water hole (62) axis and the spray head (6)
Axis antarafacial.
3. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
The angle between water hole (62) axis and the spray head (6) axis is stated between 10 ° to 150 °.
4. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
Nozzle (7) minimum diameter is stated in 2mm between 20mm.
5. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
It is circumferentially fixed in upper mandrel (21) by key (24) to state sleeve (22) and damping vane (23), passes through spring washer (25) and end cap
(26) it is axially fixed at upper mandrel (21).
6. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
It states and is fixed at least one damping vane (23) on mandrel (21).
7. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
It states at least one damping vane (23) and at least one described sleeve (22) can arranged for interval or at least two damping vane
(23) close to arrangement.
8. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
Bearing (4) is stated to be mounted between the main cylinder (1) and the lower mandrel (3).
9. a kind of rotation well-flushing tool with fluid damping deceleration device according to claim 1, it is characterised in that: institute
State the bearing group that bearing (4) can be connected in series for single rolling bearing, single tandem bearing or multiple rolling bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721801.XA CN110295859A (en) | 2019-08-06 | 2019-08-06 | A kind of rotation well-flushing tool with fluid damping deceleration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721801.XA CN110295859A (en) | 2019-08-06 | 2019-08-06 | A kind of rotation well-flushing tool with fluid damping deceleration device |
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| CN110295859A true CN110295859A (en) | 2019-10-01 |
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| CN201910721801.XA Pending CN110295859A (en) | 2019-08-06 | 2019-08-06 | A kind of rotation well-flushing tool with fluid damping deceleration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005693A (en) * | 2019-12-26 | 2020-04-14 | 巢晟(天津)石油科技有限公司 | Underground rotational flow blockage removing tool |
| CN112360370A (en) * | 2020-10-20 | 2021-02-12 | 中国石油大学(北京) | Rotary descaling and blockage removing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040164178A1 (en) * | 2003-02-07 | 2004-08-26 | Kah, Carl L.C. | Speed limiting for rotary driven sprinkler |
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