CN110067523A - A kind of fluid excitation formula Infinite Cyclic well-flushing tool - Google Patents
A kind of fluid excitation formula Infinite Cyclic well-flushing tool Download PDFInfo
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- CN110067523A CN110067523A CN201910448965.XA CN201910448965A CN110067523A CN 110067523 A CN110067523 A CN 110067523A CN 201910448965 A CN201910448965 A CN 201910448965A CN 110067523 A CN110067523 A CN 110067523A
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- 239000012530 fluid Substances 0.000 title claims abstract description 27
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 26
- 125000004122 cyclic group Chemical group 0.000 title claims abstract description 24
- 230000005284 excitation Effects 0.000 title claims abstract description 19
- 230000017105 transposition Effects 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 18
- 238000009434 installation Methods 0.000 abstract description 3
- 230000036632 reaction speed Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007616 round robin method Methods 0.000 description 1
- 238000005507 spraying Methods 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
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
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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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of fluid excitation formula Infinite Cyclic well-flushing tools, including main cylinder, top connection, lower contact, upper mandrel, lower mandrel, piston, replace spring, replace element and limit element, through-hole and upper mandrel by-pass prot are offered on the upper mandrel, blind hole and lower mandrel by-pass prot are offered on the lower mandrel, shifting groove and piston by-pass prot are offered on piston, water hole is offered on main cylinder, piston can realize the switching of piston circumferential position by shifting groove and transposition element cooperation, piston can realize that the axial position of piston switches by the cooperation with limit element, to realize the Infinite Cyclic conversion of fluid channel, reaction speed is fast and is influenced by well inclination angle small, solves existing circulating valve opening times limitation, need the problem of the resetting valve that make a trip repeatedly；Compact-sized, installation site is flexible, and a variety of deviational survey modes can be used.Drilling efficiency is improved, drilling time is shortened.
Description
Technical field
The invention belongs to oil and gas drilling project downhole tool technical fields, relate in particular to a kind of for boring
Complete well repairs the Infinite Cyclic well-flushing tool that can be controlled by Fluid pressure during clean-out service.
Background technique
Leakage and overflow are complex situations in common well in drilling process, in conventional leak stopping and kill-job operation, greatly
Granular lost circulation is easy to damage downhole instrument, while then needing quickly in drilling process such as drilling tool water hole blocking
Establishing bypass circulation prevents complex accident；During big displacement deep-well, ultra-deep well drilling, steady tilted section and horizontal segment are normal
A large amount of cutting bed is deposited, is difficult to clear up in time by conventional small size drilling tool round-robin method, possible card resistance drilling tool or has been influenced
Well quality, it is generally the case that certain flow-disturbing need to be generated by the way of pump impulse, help to clean pit shaft.But for slim-hole
Mud motor and measurement while drilling tool be not able to satisfy pump speed requirement needed for reaching flow-disturbing state, especially in high angle hole
Extreme difficulties are caused with pit shaft high-efficiency cleaning is carried out when horizontal well drilling.Drillng operation personnel generally use short, clean-out service,
More bit change and other washing and cleaning operations etc. solve the problems, such as such.These methods perhaps have certain effect to a certain extent, but
It is to need to consume the plenty of time to make a trip, reduces production efficiency.
The existing mono- ball throwing type Infinite Cyclic valve of patent CN106321013A(, 2017.01.11) disclose a kind of single ball throwing
Formula Infinite Cyclic valve is thrown, mainly includes shell, valve piston, transposition control main body.Shell nozzle, while valve are installed on shell
Door piston and transposition control main body are mounted in shell, it can be achieved that sliding along shell axial direction.Shell, valve piston and indexing
Control body interior opens hole and forms primary fluid flow road, and in downlink valve position, valve piston blocks shell nozzle, partition sprue and
The connection of bore hole annulus;In uplink valve position, valve piston loses the blocking to shell nozzle, allows fluid to pass through along sprue
It crosses shell nozzle and is transferred to bore hole annulus.Transposition control main body has the control groove track in conjunction with fixed pin, guides valve
Piston is converted between downlink valve position and uplink valve position.The circulating valve is a kind of liquid stream circulating valve selectively unlocked, is solved
Existing circulating valve opening times limitation needs the problem of the resetting valve that make a trip repeatedly, improves drilling efficiency, shortens drilling well
Time.
A kind of existing underground circulation well cleanup tool of patent CN207761600U(, 2018.08.24) it discloses a kind of underground and follows
Washing-round well tool, by switch device assembly come into operation, it can be achieved that circulation well cleanup and normal drilling operability free switching.It follows
Ring housing and mandrel are followed using switching device assembly as its state switch when spindle Lock timing by the way of being slidably matched
Achievable normal drilling operability is closed in ring channel, and after putting into derailing switch ontology and locking ball, circulation canal unlatching can be carried out certainly
Dynamic grouting, to realize automatic well-flushing operation, it is only necessary to can be realized by the way of throw-over switch device assembly normal drilling operability and
The switching of well-flushing operation is conducive to bore using making a trip the consumed production time when effectively overcoming existing clean-out service
The raising of well efficiency.
Two above patent has been realized in different forms Infinite Cyclic controlled valve to realize diverter tool state
Purpose, still, as pitching control Infinite Cyclic valve, have the shortcomings that as all kinds of ball-throwing type tools obvious.Firstly,
It needs accurate pitching technology, and miscarrying club increases operating risk；Secondly, ball-throwing type on-off effect speed is slow, and by pitching
It influences drill string assembly and is unable to flexible choice, deviational survey process can only use MWD, can not carry out mechanical deviational survey；Third, due to needing
The derailing switch of special design pitching control, improves the complexity of tool interior structure, to reduce the reliable of tool itself
Property, also improve its maintenance difficulties.
Summary of the invention
The purpose of the present invention is to provide a kind of excited using fluid, and piston to be pushed to replace, to realize fluid channel
Conversion Infinite Cyclic well-flushing tool.Fluid excitation formula cycling switch valve, reaction speed it is fast and influenced by well inclination angle it is small,
So that transposition piston is generated different axial displacements under discharge capacity effect by Displacement Regulation, solves existing circulating valve opening times
It limits, need the problem of the resetting valve that make a trip repeatedly；Compact-sized, installation site is flexible, and a variety of deviational survey modes can be used.It mentions
High drilling efficiency, shortens drilling time.
The purpose of the present invention is achieved through the following technical solutions:
A kind of fluid excitation formula Infinite Cyclic well-flushing tool, including main cylinder, the top connection connecting by screw thread with main cylinder, passes through spiral shell
Lower contact that line is connect with main cylinder, the lower mandrel for being fixed on lower contact, is installed on inside main cylinder the upper mandrel for being fixed on top connection
Piston, the transposition spring being installed between lower mandrel and piston component, the transposition element and limit element that are fixed on main cylinder,
Through-hole and upper mandrel by-pass prot are offered on the upper mandrel, and blind hole and lower mandrel by-pass prot are offered on the lower mandrel, it is living
Shifting groove and piston by-pass prot are offered beyond the Great Wall, water hole is offered on main cylinder, and piston can pass through shifting groove and transposition element cooperation
Realize the switching of piston circumferential position, piston can realize that the axial position of piston switches by the cooperation with limit element.
Preferably, the shifting groove and matching for the transposition element are combined into the circumferential positions of the piston offer at least two
It sets, the piston and matching for the limit element are combined into two axial positions of the piston offer.
Preferably, at least one piston circumferential position and one of piston axial position, the upper mandrel
By-pass prot, piston by-pass prot and water hole alignment.
Preferably, the shifting groove and matching for the transposition element are combined into six circumferential positions of the piston offer,
Wherein the piston by-pass prot is aligned simultaneously with upper mandrel by-pass prot and water hole on three circumferential positions.
As a preferred solution: the piston by-pass prot central axis and the water hole central axis with main cylinder axis phase
Hand over, and the piston by-pass prot central axis and the water hole central axis relative to main cylinder axis angle range at 10 ° extremely
Between 80 °.
Preferably, the piston by-pass prot is cylindrical hole, diameter range is in 5mm between 35mm；The water hole is
Cylindrical hole, diameter range is in 5mm between 35mm.
Preferably, the piston is by upper piston body and the Split piston that forms of transposition piston body, and the piston
By-pass prot is opened in upper piston body, and the shifting groove is opened in transposition piston body.
Preferably, offering stomata on the main cylinder, the internal piston can add buffer structure.
Preferably, between the main cylinder and the piston, between the piston and the upper mandrel, the piston and institute
It states between lower mandrel, is equipped with sealing element.
Compared with prior art, the beneficial effects of the present invention are:
(1) the Infinite Cyclic well-flushing tool in the present invention does not use pitching to control, but uses the form control of fluid excitation
Recycle threshold switch, reaction speed is fast and is influenced by well inclination angle small, and installation site is flexible, and a variety of deviational survey modes can be used；
(2) using fluid excitation, by adjust pumpage make to replace piston generated under discharge capacity effect different axial displacement and
It circumferentially rotates, and is configured with special transposition, resetting-mechanism, solve existing circulating valve opening times limitation, need repeatedly
Make a trip the problem of resetting valve
(3) it is designed using the hole for water spraying with reversed inclination angle, cooperation sand flushing tool can realize the purpose of positive negative sand washing well-flushing, can
It provides while having both very strong sand washing and prop-carrying capacity；
(4) the relatively main cylinder of mandrel is fixed up and down, rotates in a circumferential direction and move axially realization transposition and bypass opening and closing, core by piston
The occurrence of card resistance, transposition structure high reliablity is not present in axis itself；
(5) presser sensor, the opening and closing of easily controllable bypass, and it is easy to judge on ground by pressure state the operating mode of tool
Whether bypass or leads directly to；
(6) components are less, compact-sized, do not need the control mechanisms such as design ball seat, derailing switch, reduce processing and maintenance
Cost.
Detailed description of the invention:
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is that the embodiment of the present invention one is in the operating position schematic diagram under pass-through state.
Fig. 3 is that the embodiment of the present invention one is in the operating position schematic diagram under bypass state.
Fig. 4 is the structural schematic diagram of the embodiment of the present invention two.
Fig. 5 is the structural schematic diagram of transposition piston in the embodiment of the present invention two.
Fig. 6 is the structural schematic diagram and embodiment three, the structure of example IV of buffer structure in the embodiment of the present invention two
Schematic diagram.
Specific embodiment:
Following non-limiting examples are for illustrating the present invention.
Embodiment one:
As shown in Figure 1 to Figure 3, a kind of fluid excitation formula Infinite Cyclic well-flushing tool, including main cylinder (1), pass through screw thread and main cylinder
(1) the upper mandrel of top connection (2) is fixed in the top connection (2) connected, the lower contact (3) being connect by screw thread with main cylinder (1)
(4), it is fixed on the lower mandrel (5) of lower contact (3), is installed on the internal piston (6) of main cylinder (1), lower mandrel (5) is installed on and lives
Transposition spring (7) between plug assembly (5), the transposition element (8) and limit element (9) being fixed on main cylinder (1), the upper core
Through-hole (41), upper mandrel by-pass prot (42) and pressure port (43) are offered on axis (4), offer blind hole (51) on the lower mandrel
With lower mandrel by-pass prot (52), shifting groove (61) and piston by-pass prot (62) are offered on piston (6), is offered on main cylinder (1)
Water hole (12), piston (6) can realize the switching of piston (6) circumferential position by shifting groove (61) and transposition element (8) cooperation, living
Fill in (6) can by the cooperation with limit element (9) realize piston (6) axial position switch, the shifting groove (61) with it is described
Matching for transposition element (8) is combined into six circumferential positions of the piston (6) offer, wherein on three circumferential positions by the piston
Through-hole (62) is aligned simultaneously with upper mandrel by-pass prot (42) and water hole (12).
A kind of fluid excitation formula Infinite Cyclic well-flushing tool as described in this embodiment mainly includes two working conditions:
Pass-through state and bypass (well-flushing) state.
As shown in Fig. 2, being the pass-through state of this well-flushing tool.In conjunction with Fig. 1, under turn on pump state, due to piston (6) upper end
Continuous action of the face by fluid pressure derived from upper mandrel pressure port (43), transposition element (8) is located on piston (6) at this time
The straight-through position (shorter, more on the lower compared with bypass position) of shifting groove (61), correspondingly, transposition spring (7) is in straight-through compressive state.By
To the limitation of transposition element (8) and shifting groove (61), piston by-pass prot (62) and main cylinder water hole (12) and upper mandrel by-pass prot
(42) mutually circumferential to be staggered；Meanwhile it being limited by limit element (9) and piston lower surface, piston by-pass prot (62) and main cylinder
Water hole (12) and upper mandrel by-pass prot (42) are mutually axially staggered.Since piston by-pass prot at this time (62) is relative to main cylinder water hole
(12) and upper mandrel by-pass prot (42) is that (circumferential and axial) are staggered state, and bypass is closed, and liquid stream is only capable of logical by upper mandrel
Hole (41) outflow then flows into lower mandrel by lower mandrel by-pass prot (52), connects under flowing out eventually by lower mandrel blind hole (51)
Head (3), this state is the pass-through state of this tool.
It is the pass-through state of this well-flushing tool shown in 3 such as figure.In conjunction with Fig. 1, similarly, under turn on pump state, due to work
Continuous action of (6) upper surface by fluid pressure derived from upper mandrel pressure port (43) is filled in, replaces element (8) at this time positioned at work
The bypass position (longer, more top compared with straight-through position) of the shifting groove (61) on (6) is filled in, correspondingly, transposition spring (7) is in bypass compression
Contracting state.It is limited by transposition element (8) and shifting groove (61), piston by-pass prot (62) and main cylinder water hole (12) and upper core
Next to axis through-hole (42) is mutually circumferentially aligned；Meanwhile it being limited by limit element (9) and piston lower surface, piston by-pass prot
(62) it is aligned axially with each other with main cylinder water hole (12) and upper mandrel by-pass prot (42).Since piston by-pass prot at this time (62) is opposite
It is (circumferential and axial) aligned condition in main cylinder water hole (12) and upper mandrel by-pass prot (42), bypass is opened, and liquid stream is only capable of leading to
Mandrel by-pass prot (42) outflow is crossed, then main cylinder water hole (12) is reached by piston by-pass prot (62), ultimately forms injection liquid
Stream rinses the borehole wall.This state is the bypass state of this tool.
Embodiment two:
As shown in Figures 4 to 6, a kind of fluid excitation formula Infinite Cyclic well-flushing tool, including main cylinder (1), pass through screw thread and main cylinder
(1) the upper mandrel of top connection (2) is fixed in the top connection (2) connected, the lower contact (3) being connect by screw thread with main cylinder (1)
(4), it is fixed on the lower mandrel (5) of lower contact (3), is installed on the internal piston (6) of main cylinder (1), lower mandrel (5) is installed on and lives
Transposition spring (7) between plug assembly (5), the transposition element (8) and limit element (9) being fixed on main cylinder (1), the upper core
Through-hole (41), upper mandrel by-pass prot (42) and pressure port (43) are offered on axis (4), offer blind hole (51) on the lower mandrel
With lower mandrel by-pass prot (52), piston (6) is the Split piston being made of upper piston body (63) and transposition piston body (64), and
The piston by-pass prot (62) is opened in upper piston body (63), and the shifting groove (61) is opened in transposition piston body (64) main cylinder
(1) water hole (12) are offered on, as shown in Figure 5.Piston (6) can be realized and be lived by shifting groove (61) and transposition element (8) cooperation
The switching of (6) circumferential position is filled in, piston (6) can realize that the axial position of piston (6) is cut by the cooperation with limit element (9)
It changes, the shifting groove (61) and matching for transposition element (8) are combined into six circumferential positions of the piston (6) offer, wherein
The piston by-pass prot (62) is aligned simultaneously with upper mandrel by-pass prot (42) and water hole (12) on three circumferential positions.
In the present embodiment, piston (6) is the Split piston being made of upper piston body (63) and transposition piston body (64), can
Difficulty of processing and cost are reduced, while but also tool is easy to dismount and safeguard.
Further, it is offered stomata (13) on the main cylinder (1), buffer structure can be added inside the piston (6)
(65), buffer structure (65) includes buffer spring (651), damper piston (652) and check ring (653).
In the present solution, by internal piston be arranged buffer gear, can reduce tool in stateful switchover process piston with
The impact force of generation between lower mandrel can not only make the course of work more stable, smooth, also be avoided that as caused by impact
Life tools reduce.
Further, between the main cylinder (1) and the piston (6), between the piston (6) and the upper mandrel (4),
Between the piston (6) and the lower mandrel (5), it is equipped with sealing element.
Embodiment three:
As shown in fig. 6, the present embodiment and embodiment two are essentially identical, difference is: piston by-pass prot (62) central axis
Line and the water hole (12) central axis intersect with main cylinder axis, and piston by-pass prot (62) central axis and institute
Water hole (12) central axis is stated relative to main cylinder axis angle range between 20 ° to 80 °.
Further, piston by-pass prot (62) central axis and the water hole (12) central axis are relative to main cylinder
Axis angle is 45 °.
Example IV
As shown in fig. 6, the present embodiment and embodiment two are essentially identical, difference is: the piston by-pass prot (62) is cylinder
Hole, diameter range is in 5mm between 35mm；The water hole (12) is cylindrical hole, and diameter range is in 5mm between 35mm.
Further, piston by-pass prot (62) is cylindrical hole, a diameter of 12mm；The water hole (12) is cylindrical hole,
Diameter is 12mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of fluid excitation formula Infinite Cyclic well-flushing tool, it is characterised in that: including main cylinder (1), pass through screw thread and main cylinder (1)
The upper mandrel (4) of top connection (2) is fixed in the top connection (2) of connection, the lower contact (3) being connect by screw thread with main cylinder (1),
It is fixed on the lower mandrel (5) of lower contact (3), the internal piston (6) of main cylinder (1) is installed on, is installed on lower mandrel (5) and piston group
Transposition spring (7) between part (5), the transposition element (8) and limit element (9) being fixed on main cylinder (1), the upper mandrel
(4) through-hole (41), upper mandrel by-pass prot (42) and pressure port (43) are offered on, offered on the lower mandrel blind hole (51) and
Lower mandrel by-pass prot (52) offers shifting groove (61) and piston by-pass prot (62) on piston (6), offers water on main cylinder (1)
Hole (12), piston (6) can realize the switching of piston (6) circumferential position, piston by shifting groove (61) and transposition element (8) cooperation
(6) it can realize that the axial position of piston (6) switches by the cooperation with limit element (9).
2. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: the shifting groove
(61) the circumferential operating positions of the piston (6) offer at least two, the piston (6) are combined into matching for transposition element (8)
The axial operating positions of the piston (6) offer two are combined into matching for the limit element (9).
3. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: at least one
On a piston circumferential position and one of piston axial position, the upper mandrel by-pass prot (42), piston by-pass prot (62) with
And water hole (12) alignment.
4. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: the shifting groove
(61) six circumferential positions of the piston (6) offer are combined into matching for transposition element (8), wherein on three circumferential positions
The piston by-pass prot (62) is aligned simultaneously with upper mandrel by-pass prot (42) and water hole (12).
5. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: by the piston
Through-hole (62) central axis and the water hole (12) central axis intersect with main cylinder axis, and the piston by-pass prot (62)
Central axis and the water hole (12) central axis are relative to main cylinder axis angle range between 20 ° to 80 °.
6. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: by the piston
Through-hole (62) is cylindrical hole, and diameter range is in 5mm between 35mm；The water hole (12) is cylindrical hole, and diameter range exists
5mm is between 35mm.
7. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: the piston
It (6) is the Split piston being made of upper piston body (63) and transposition piston body (64), and the piston by-pass prot (62) opens up
In upper piston body (63), the shifting groove (61) is opened in transposition piston body (64).
8. a kind of fluid excitation formula Infinite Cyclic well-flushing tool according to claim 1, it is characterised in that: the main cylinder
(1) it is offered on stomata (13), buffer structure (65) can be added inside the piston (6).
9. a kind of according to claim 1, fluid excitation formula Infinite Cyclic well-flushing tool described in 9, it is characterised in that: the transposition
Element (8) is the transpositing pin for being fixed on main cylinder (1), and the limit element (9) is the spacer pin for being fixed on main cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448965.XA CN110067523A (en) | 2019-05-28 | 2019-05-28 | A kind of fluid excitation formula Infinite Cyclic well-flushing tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448965.XA CN110067523A (en) | 2019-05-28 | 2019-05-28 | A kind of fluid excitation formula Infinite Cyclic well-flushing tool |
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| CN110067523A true CN110067523A (en) | 2019-07-30 |
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| CN201910448965.XA Pending CN110067523A (en) | 2019-05-28 | 2019-05-28 | A kind of fluid excitation formula Infinite Cyclic well-flushing tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318695A (en) * | 2019-08-06 | 2019-10-11 | 成都阿斯贝瑞科技有限公司 | A kind of fluid damping is rotated in deceleration well-flushing tool |
| CN113027365A (en) * | 2019-12-24 | 2021-06-25 | 中国石油天然气集团有限公司 | Drilling and grinding multi-time opening and closing circulating valve |
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| CA2975598A1 (en) * | 2015-03-24 | 2016-09-29 | Halliburton Energy Services, Inc. | Hydraulic control of downhole tools |
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