CN106761562A - A kind of drifting scraper - Google Patents
A kind of drifting scraper Download PDFInfo
- Publication number
- CN106761562A CN106761562A CN201611224238.8A CN201611224238A CN106761562A CN 106761562 A CN106761562 A CN 106761562A CN 201611224238 A CN201611224238 A CN 201611224238A CN 106761562 A CN106761562 A CN 106761562A
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- Prior art keywords
- drifting
- scraping
- consider
- worth doing
- enter
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Paper (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of drifting scraper, including：Outer tube；Drifting overcoat；Put outside the drifting and be provided with scraping component；Scraping inner tube；The upper end of the scraping inner tube is connected with liquid inlet joint, and the upper end of the liquid inlet joint is provided with negative pressure component；The liquid inlet joint radially offers inlet opening；The side wall of the scraping inner tube is provided with the pressure holes communicated with the scraping component；It is provided between the scraping inner tube and the outer tube into bits annular space；The upper end of the negative pressure component is provided with top connection；Feed liquor annular space is provided between the top connection and the outer tube；Separating joint；The wall of the separating joint be provided with the feed pathway for being run through vertically and radially run through enter to consider passage to be worth doing；With inlet opening be connected the feed liquor annular space by the feed pathway；It is described to enter to consider passage to be worth doing and enter to consider annular space to be worth doing and be connected with described by the negative pressure component；The negative pressure component can produce negative pressure to enter to consider the chip that annular space sucks the scraping component generation to be worth doing with by described.
Description
Technical field
The present invention relates to oil field production scene drifting field of tool, more particularly to a kind of drifting scraper.
Background technology
Drifting be detect sleeve pipe, oil pipe, in drilling rod and other pipes latus rectum size conventional meanses, after checking its deformation
The biggest size of element that can pass through, is that well workover, operation detect essential technique.
Scraping internal surface of sleeve pipe, eliminates casing wall cement, hard wax, salt crust and borehole burr, is workover treatment and normal underground
One important procedure of operation, for entering under downhole tool and normal work important role.Casing scraper can be used for
Remove cement block, cement sheath, hard wax, various saline crystallizations and deposit, perforation burrs, the Yi Jitao remained on internal surface of sleeve pipe
The thing such as produced iron oxide after pipe corrosion, so that unblocked underground enters various instruments of going into the well.Especially in the instrument of going into the well and set
When inside pipe wall annular space is smaller, abundant scraping is more answered, a kind of essential operation, its purpose are had become using scraper
It is to enter the success rate (the setting success rate etc. of such as packer) with operation under raising instrument.
At present, the process sequence commonly used in scene is to carry out pipe cleaning operation in lower scraper after first drifting, drifting and is scraped
It is basic working procedure in underground work to cut, and it is time-consuming to play lower tubular column work consuming repeatedly, also results in into the abrasion of well casing post, and what scraping was produced cuts
Bits can also be impacted to shaft bottom, so the research of various integrated well workover technologies is extremely necessary.
The subject matter that conventional cannula scraping is present shows as：1st, it is necessary before entering scraper under and carrying out pipe cleaning operation
Drifting operation is first carried out, lower tubular column work consuming is played repeatedly time-consuming；2nd, repeatedly playing lower tubular column can cause tubing string to wear and tear；3rd, in scraping
Shaft bottom is easily piled up in the chip produced in journey.
The content of the invention
In view of the deficiencies in the prior art, the present invention is necessary a kind of drifting scraper of developmental research, makes it in drifting
The function of scraper is provided simultaneously with, and the chip that scraping is produced can be collected, lower tubular column number of times has been reduced, so as to reach
To energy-efficient, maintenance cost is reduced, improve the purpose of operational efficiency.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of drifting scraper, including：
The outer tube that lengthwise extends；
It is connected to the drifting overcoat of the outer tube lower end；Put outside the drifting and be provided with least one scraping component；
It is sheathed on the scraping inner tube of the outer tube and the drifting jacket internal；The upper end of the scraping inner tube be connected with into
Liquid joint, the upper end of the liquid inlet joint is provided with negative pressure component；The liquid inlet joint radially offers inlet opening；It is described to scrape
The side wall for cutting inner tube is provided with the pressure holes communicated with the scraping component；Be provided between the scraping inner tube and the outer tube into
Bits annular space, it is described to enter to consider annular space to be worth doing and communicated with the drifting scraping tool exterior；The upper end of the negative pressure component is provided with top connection；
Feed liquor annular space is provided between the top connection and the outer tube；
It is sheathed on the separating joint of the negative pressure component external；The wall of the separating joint is provided with and is run through vertically
Feed pathway and radially run through enter to consider passage to be worth doing；The feed pathway is entered to consider passage to be worth doing and do not connect mutually with described；Institute
State feed pathway the feed liquor annular space is connected with inlet opening；It is described to enter to consider passage to be worth doing and enter to consider ring to be worth doing with described by the negative pressure component
Kongxiang connects；The negative pressure component can produce negative pressure to enter to consider cutting for the annular space suction scraping component generation to be worth doing with by described
Bits.
As one kind preferred embodiment, the negative pressure component includes：It is connected to the driving of the liquid inlet joint upper end
Nozzle and the Venturi tube above the driving nozzle；
The driving nozzle can be to the entrance hydrojet of the Venturi tube；It is described drive nozzle and the Venturi tube it
Between gap enter to consider passage to be worth doing and communicate with described.
As a kind of trunnion that preferred embodiment, the Venturi tube includes sequentially arranging, the first anemostat and
Second anemostat；The Venturi tube fixed sleeves are provided with diffuser set and trunnion set.
Nozzle pressure cap is preferred embodiment provided with below the driving nozzle as a kind of, and by nozzle cage company
It is connected to the upper end of the liquid inlet joint；The lower end of the top connection is connected to the upper end of the Venturi tube and the diffuser set
Upper end between.
As one kind preferred embodiment, the lower end of the trunnion set connects the upper of the liquid inlet joint by adapter sleeve
End；The connection is arranged with the connecting hole for radially being run through；The gap is entered to consider passage company to be worth doing by the connecting hole with described
It is logical；The locking nut being sheathed on outside the trunnion set is provided with above the adapter sleeve.
As one kind preferred embodiment, the upper end of the scraping inner tube is connected with lower seal nipple, the lower sealing
Sealed base is provided between joint and the liquid inlet joint；The sealed base is provided with gasket seal and sealing ring；It is described
Sealed base is located at the lower section of the adapter sleeve；The lower end of the separating joint connects the upper of the lower seal nipple by female connector
End.
As one kind preferred embodiment, it is provided between the upper end of the lower end of the liquid inlet joint and the scraping inner tube
Lower liquid inlet joint；The threaded upper ends of the lower liquid inlet joint connect the lower end of the liquid inlet joint, under the lower liquid inlet joint
Apical ring is provided between end and the upper end of the scraping inner tube；The lower end of the lower liquid inlet joint is provided with and is engaged with the apical ring
Tapering.
As one kind preferred embodiment, the lower end of the scraping inner tube is connected with lower nozzle.
As one kind preferred embodiment, the lower end of the scraping inner tube is connected with lower nozzle connection, the lower nozzle
It is connected on the lower nozzle connection by lower nozzle cage.
As one kind preferred embodiment, the inwall of the drifting overcoat is formed with reducing step；The reducing step
Enter to consider the bottom surface of annular space to be worth doing described in being formed.
As one kind preferred embodiment, the upper end of the drifting overcoat is provided with to be entered to consider annular space and ft connection to be worth doing by described
Suction bits check valve；It is described inhale bits check valve it is described enter consider to be worth doing annular space pressure be less than external pressure when open.
As one kind preferred embodiment, the bits check valve of inhaling includes that suction is considered valve seat to be worth doing and inhales bits valve seat located at described
On suction bits valve plate；The bits valve plate of inhaling is covered on the suction bits valve seat by torsionspring.
As one kind preferred embodiment, it is described to enter to consider the filter being provided with annular space near the scraping inner tube upper end to be worth doing
Structure.
As one kind preferred embodiment, the filter mechanism radially convexes to form projection including the scraping inner tube
Annulus；The protruding circular ring is provided with the filter bores for circumferentially being run through.
As one kind preferred embodiment, the drifting overcoat is radially provided with multiple placement through holes；
The scraping component includes positioned at the cutting knife placed in through hole and covers cutting on the placement through hole
Knife baffle plate；Spring is provided between the cutting knife baffle plate and the cutting knife；It is opened in for cutting that cutting knife stretches out on the cutting knife baffle plate
Seam；The cutting knife baffle plate is bolted and is covered on the placement through hole.
As one kind preferred embodiment, pressure holes length vertically is described more than drifting overcoat distribution
The region of scraping component length vertically.
As one kind preferred embodiment, the inlet opening is elongated hole, and quantity is multiple；Multiple inlet opening edges
The circumference of the liquid inlet joint is uniformly distributed.
As one kind preferred embodiment, the upper end duplex joint of the outer tube；The upper end of the duplex joint passes through
Connecting tube is connected with jointing.
The present invention possesses following beneficial effect：
By above technical scheme, drifting scraper provided by the present invention has by scraping component and drifting overcoat shape
Into drifting mechanism, such that it is able to be used separately as gauguste cutter；Meanwhile, drifting scraper provided by the present invention also has
Negative-pressure cyclic inhales chip mechanism, such that it is able to the chip produced during scraping is collected by suction function.Therefore, originally
The there is provided drifting scraper of invention can reduce the number of times of lower tubular column, improve well workover efficiency, improve oilfield exploitation benefit.
With reference to explanation hereinafter and accompanying drawing, only certain exemplary embodiments of this invention is disclose in detail, specify original of the invention
Reason can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In appended power
In the range of the spirit and terms that profit is required, embodiments of the present invention include many changes, modifications and are equal to.
The feature for describing and/or showing for a kind of implementation method can be in same or similar mode one or more
Used in individual other embodiment, it is combined with feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence of one or more further features, one integral piece, step or component or additional.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the drifting scraping tool construction schematic diagram that one embodiment of the present invention is provided；
Fig. 2 is the enlarged drawing of liquid inlet joint region in Fig. 1；
Fig. 3 is the cross-sectional view of separating joint in Fig. 1；
Fig. 4 is B-B generalized sections in Fig. 3.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained on the premise of creative work is not made, should all belong to guarantor of the present invention
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique implementation method to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all of combination of related Listed Items.
Fig. 1 to Fig. 4 is referred to, for a kind of drifting scraping tool construction schematic diagram that one embodiment of the present invention is provided；
In this embodiment, the drifting scraping kit is included：The outer tube 10 that lengthwise extends；It is connected to the logical of the lower end of the outer tube 10
Well overcoat 29；At least one scraping component is provided with the drifting overcoat 29；It is sheathed on outside the outer tube 10 and the drifting
Scraping inner tube 28 inside set 29；The upper end of the scraping inner tube 28 is connected with liquid inlet joint 18, the liquid inlet joint 18 it is upper
End is provided with negative pressure component；The liquid inlet joint 18 radially offers inlet opening；The side wall of the scraping inner tube 28 is provided with
The pressure holes communicated with the scraping component；Be provided between the scraping inner tube 28 and the outer tube 10 into bits annular space, it is described enter
Bits annular space is communicated with the drifting scraping tool exterior；The upper end of the negative pressure component is provided with top connection 4；The top connection 4
Feed liquor annular space is provided between the outer tube 10；It is sheathed on the separating joint 11 of the negative pressure component external；The separating joint
11 wall be provided with the feed pathway 111 for being run through vertically and radially run through enter to consider to be worth doing passage 112；It is described enter
Liquid passage 111 enters to consider passage 112 to be worth doing and do not connect mutually with described；With inlet opening be connected the feed liquor annular space by the feed pathway 111
It is logical；It is described to enter to consider passage 112 to be worth doing and enter to consider annular space to be worth doing and be connected with described by the negative pressure component；The negative pressure component can produce negative pressure
Enter to consider the chip that annular space sucks the scraping component generation to be worth doing with by described.
By above technical scheme, the drifting scraper that present embodiment is provided has outside by scraping component and drifting
The drifting mechanism that set 29 is formed, such that it is able to be used separately as gauguste cutter；Meanwhile, the drifting scraping that present embodiment is provided
Also there is instrument negative-pressure cyclic to inhale chip mechanism, such that it is able to the chip produced during scraping is gathered up by suction function
Come.Therefore, the drifting scraper that present embodiment is provided can reduce the number of times of lower tubular column, improve well workover efficiency, carry
Oilfield exploitation benefit high.
In the present embodiment, the lower end of outer tube 10 can connect the upper end of drifting overcoat 29 by internal thread.Wherein, institute
State the upper end duplex joint 5 of outer tube 10；The upper end of the duplex joint 5 is connected with jointing 1 by connecting tube 3.Specifically,
The upper end of duplex joint 5 connects the lower end of connecting tube 3 by external screw thread, and the upper end of outer tube 10 is connected by external screw thread.Connection
The upper end of pipe 3 connects the lower end of jointing 1 by internal thread, and the junction of the two is provided with sealing ring 2.Jointing
1 is used for connected pipes, and drifting scraper is lowered into well by oil pipe.
In the present embodiment, negative pressure component can form certain vacuum, and the negative pressure region can be through entering to consider annular space to be worth doing
Suction is formed to drifting scraping tool exterior space, during scraping, there is the liquid for being mixed with chip outside drifting scraper,
Under above-mentioned suction, chip can enter into considering annular space to be worth doing, so as to complete well-flushing cleaning.
Specifically, the negative pressure component can include：Be connected to the upper end of the liquid inlet joint 18 driving nozzle 15 and
Positioned at the Venturi tube of the top of driving nozzle 15.The driving nozzle 15 can be to the entrance hydrojet of the Venturi tube；
The gap driven between nozzle 15 and the Venturi tube is entered to consider passage 112 to be worth doing and communicate with described.As shown in figure 1, driving spray
Mouth 15 is faced with the entrance (entrance) of Venturi tube vertically.So as to the high-velocity fluid through driving nozzle 15 to spray enters
Enter in Venturi tube, negative pressure is formed at the trunnion 12 of Venturi tube.
As shown in figure 1, the Venturi tube can include that the trunnion 12 sequentially arranged, the first anemostat 7 and second expand
Dissipate pipe 8；The Venturi tube fixed sleeves are provided with diffuser set 6 and trunnion set 9.Wherein, trunnion 12, the first anemostat 7, with
And second anemostat 8 be installed in the trunnion set 9 that is connected and diffuser set 6, trunnion set 9 is connected through a screw thread with diffuser.
In the present embodiment, the lower section for driving nozzle 15 is provided with nozzle pressure cap 17, and is connected by nozzle cage 16
In the upper end of the liquid inlet joint 18；The lower end of the top connection 4 is connected to the upper end of the Venturi tube and the diffuser
Between the upper end of set 6.
Wherein, the lower end of the trunnion set 9 connects the upper end of the liquid inlet joint 18 by adapter sleeve 14；The adapter sleeve
14 are provided with the connecting hole (sign) for radially being run through；The gap is entered to consider passage 112 to be worth doing and connect by the connecting hole with described
It is logical；The top of the adapter sleeve 14 is provided with the locking nut 13 being sheathed on outside the trunnion set 9.As shown in figure 1, driving nozzle
15th, connecting hole, to enter to consider to be worth doing passage 112 diametrically opposite neat.
As shown in Figure 3, Figure 4, separating joint 11 is sheathed on outside negative pressure component, and Qi Bishang offers not connected radial direction and enters
Bits passage 112 and shaft orientation liquid feeding passage 111.Wherein, the cross section of feed pathway 111 is long arc-shaped holes, and quantity is two, edge
Circumferentially opposed distribution.Enter to consider to be worth doing the through hole communicated with inside it opened up on the wall that passage 112 is separating joint 11.Enter to consider passage to be worth doing
112 are circumferentially located in the middle of two long arc-shaped holes.Wherein, the lower end of the separating joint 11 by female connector 23 connect it is described under it is close
The upper end of sealing joint 24.
Lower liquid inlet joint 25 is provided between the upper end of the lower end of the liquid inlet joint 18 and the scraping inner tube 28；Under described
The threaded upper ends of liquid inlet joint 25 connect the lower end of the liquid inlet joint 18, lower end and the scraping of the lower liquid inlet joint 25
Apical ring 26 is provided between the upper end of inner tube 28；The lower end of the lower liquid inlet joint 25 is provided with the cone engaged with the apical ring 26
Portion, also, apical ring 26 connects lower seal nipple 24 by anti-rotation pin 27.
The lower end of the scraping inner tube 28 is connected with lower nozzle.The lower end of the scraping inner tube 28 is connected with lower nozzle connection
37, the lower nozzle is connected on the lower nozzle connection 37 by lower nozzle cage 38.Wherein, lower nozzle is for scraping inner tube 28
Can there is crown_interception in interior high-velocity fluid, so that the hydraulic pressure that high-velocity fluid is formed can act on scraping component, open it.
As shown in Fig. 2 in the present embodiment, the upper end of the scraping inner tube 28 is connected with liquid inlet joint 18, and feed liquor connects
First 18 are provided with inlet opening.Wherein, high-velocity flow through the feed liquor annular space between connecting tube 3 and top connection 4 through feed pathway 111,
Inlet opening enters in scraping inner tube 28, and upper and lower fluid flow is divided into afterwards, and the high-velocity flow for flowing up is formed through negative pressure component
Negative pressure, the high-velocity flow for flowing downward forms internal hydraulic pressure under the throttling action of lower nozzle, and internal hydraulic pressure will be scraped through pressure holes
The blade cut in component is released, so as to open scraping component.Further, it is the feed liquor ability of lifting liquid inlet joint 18, it is described
Inlet opening is elongated hole, and quantity is multiple；Multiple inlet openings are uniformly distributed along the circumference of the liquid inlet joint 18.
To ensure to carry out good sealing over and under to inlet opening, the upper end of the scraping inner tube 28 is connected with down
Seal nipple 24.Sealed base 19,22 is provided between the lower seal nipple 24 and the liquid inlet joint 18.The sealed base
19 are provided with gasket seal 20 and sealing ring 21.The sealing ring 21 can be special-shaped seal ring.The sealed base 19 is located at
The lower section of the inlet opening.Meanwhile, the lower end of separating joint 11 is connected between female connector 23 and liquid inlet joint 18, separating joint 11
Sealed base 19 (sign) is again provided between the liquid inlet joint 18, gasket seal is again provided with the sealed base 19
20 and sealing ring.So as to be equipped with seal approach over and under in inlet opening, it is ensured that high-velocity flow will not be leaked into
Female connector annular space (is not indicated).Wherein, bits will be entered as shown in figure 1, having between female connector 23 (outer wall) and outer tube 10 (inwall)
Passage 112 with enter to consider to be worth doing the female connector annular space that annular space is connected.
As shown in figure 1, the inwall of the drifting overcoat 29 is formed with reducing step 40；The reducing step 40 forms described
Enter to consider the bottom surface of annular space to be worth doing.As shown in figure 1, between drifting overcoat 29 and the scraping inner tube 28 and positioned at the reducing step 40
Lower section be provided with (O-shaped) sealing ring, the sealing ring is located at the top of pressure holes.
In the present embodiment, the upper end of the drifting overcoat 29 is provided with and enters to consider the suction bits of annular space and ft connection to be worth doing by described
Check valve；It is described inhale bits check valve it is described enter consider to be worth doing annular space pressure be less than external pressure when open.
Specifically, the bits check valve of inhaling considers valve seat 30 to be worth doing and located at the suction bits valve plate inhaled on bits valve seat 30 including inhaling
31；The bits valve plate 31 of inhaling is covered on the suction bits valve seat 30 by torsionspring 32.As shown in figure 1, inhale bits valve plate 31 setting
The inner side for inhaling bits valve seat 30 is placed in, torsionspring 32 is connected to the lower end for inhaling bits valve plate 31.Torsionspring 32 is by suction bits valve
Plate 31 applies elastic force, it is covered on bits valve seat 30 is inhaled.
It is described enter consider to be worth doing the pressure of annular space less than external pressure pressure differential more than torsionspring 32 elastic force when, suction bits
Valve plate 31 is rotated, so as to open suction bits check valve.Now, chip mixed liquor enters to consider to be worth doing in annular space through suction bits check valve.
It is described to enter to consider the filter mechanism 39 being provided with annular space near the upper end of scraping inner tube 28 to be worth doing.Specifically, the filtering
Mechanism 39 radially convexes to form protruding circular ring including the scraping inner tube 28；The protruding circular ring is provided with and is circumferentially run through
Filter bores.
The drifting overcoat 29 is radially provided with multiple placement through holes.The scraping component includes being located at the placement through hole
Interior cutting knife and cover the cutting knife baffle plate 34 on the placement through hole；Set between the cutting knife baffle plate 34 and the cutting knife
There is (cylinder) spring 36；The slot stretched out for cutting knife is opened on the cutting knife baffle plate 34；The cutting knife baffle plate 34 passes through bolt
33 connections are covered on the placement through hole.
As shown in figure 1, the upper and lower ends of cutting knife baffle plate 34 are fixed on the platform placed in through hole by fixing bolt 33 respectively
On rank, meanwhile, cutting knife baffle plate 34 is two pieces (during with the scope of readers to Fig. 1) in left and right, and slot is located between two pieces of cutting knife baffle plates 34.For
It is easy to pressure holes to apply hydraulic action to all of scraping component, the scraping component for preventing cannot be opened normally, in this implementation
In mode, the pressure holes (sign) length vertically is distributed the region of the scraping component more than the drifting overcoat 29
Length vertically.
Wherein, under the hydraulic action of above-mentioned downward high-velocity flow by the slot of cutting knife baffle plate 34 by the bullet of scraping blade 35
Go out, mobile tubing string can carry out scraping outside well.
The operation principle of the drifting scraper of present embodiment is described below in conjunction with structure shown in Fig. 1, so as to more preferable
Ground understands the present invention.
When carrying out drifting scraping, the feed liquor annular space that high-velocity flow is formed from connecting tube 3 and top connection 4 enters (high pressure) feed liquor
Joint 18, liquid is into being divided into upper and lower fluid flow after liquid inlet joint 18.Wherein, downward liquid stream is reached by scraping inner tube 28
Lower nozzle, internal hydraulic pressure is formed under the crown_interception of lower nozzle, and the pressure holes that scraping inner tube 28 is passed through under hydraulic action will
Scraping blade 35 is ejected by slot, and mobile tubing string can carry out scraping；
While drifting scraping is carried out, the liquid stream produced via lower nozzle rushes chip, upward high-velocity flow
From driving nozzle 15 to spray, form certain true in the chamber formed with trunnion 12, the first anemostat 7 and the second anemostat 8
Reciprocal of duty cycle (negative pressuren zone).The chip mixed liquor that the negative pressuren zone can rush bottom liquid stream is inhaled via separating joint 11, adapter sleeve 14
Come up.Two strands of current mix in Venturi tube, and by the first anemostat 7, the second anemostat 8, the speed pressure that decreases has
Raise and continue up flowing and flowed out by top connection 4；
During drifting scraping clearly bits, larger chip is trapped in shaft bottom and can produce influence, this embodiment party to underground work
The drifting scraper that formula is provided can also be processed the larger chip in underground.It is single that the negative pressure that negative pressure component is produced considers suction to be worth doing
Opened to valve and suck to enter to consider annular space to be worth doing between outer tube 10 and scraping inner tube 28 by chip, meanwhile, in the effect of filter mechanism 39
Under larger cutting cannot on be advanced into negative pressure component and be deposited in always in feed liquor annular space.
Negative pressure disappears when high-velocity flow stops, and inhaling the twisting resistance of the torsionspring 32 of bits check valve closes suction bits valve plate 31
Close, sealing is formed with bits valve seat 30 is inhaled, so as to chip is stored between outer tube 10 and scraping inner tube 28, and the chip that will be stored
Ground is taken back when equipment is retrieved.In addition, the chip of storage can be adjusted by controlling outer tube 10 with the length of scraping inner tube 28
Section storage considers chamber to be worth doing to control.
After drifting scraping is completed, stop ground high speed liquid flow, continue decentralization tubing string and repeated, you can be complete
Into the drifting scraping washing and cleaning operation of other sections.
Herein cited any digital value all include between lower limit to higher limit with a lower value for incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that also clearly listing such as 15 to 85,22 in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", at least end points including indicating.
The all articles and reference for disclosing, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitutes " for describing combination should include identified element, composition, part or step and reality
There is no other elements, composition, part or the step of the basic novel feature for influenceing the combination in matter.Using term "comprising" or
" including " combination of element here, composition, part or step is described it is also contemplated that basic by these elements, composition, part
Or the implementation method that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.Alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" of description element, composition, part or step is not said to exclude other elements, composition, part
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouching
State, many implementation methods and many applications outside the example for being provided all will be for a person skilled in the art aobvious and easy
See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to appended claims and this
The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for subject matter.
Claims (18)
1. a kind of drifting scraper, it is characterised in that including：
The outer tube that lengthwise extends；
It is connected to the drifting overcoat of the outer tube lower end；Put outside the drifting and be provided with least one scraping component；
It is sheathed on the scraping inner tube of the outer tube and the drifting jacket internal；The upper end of the scraping inner tube is connected with feed liquor and connects
Head, the upper end of the liquid inlet joint is provided with negative pressure component；The liquid inlet joint radially offers inlet opening；In the scraping
The side wall of pipe is provided with the pressure holes communicated with the scraping component；It is provided between the scraping inner tube and the outer tube into bits ring
Sky, it is described to enter to consider annular space to be worth doing and communicated with the drifting scraping tool exterior；The upper end of the negative pressure component is provided with top connection；It is described
Feed liquor annular space is provided between top connection and the outer tube；
It is sheathed on the separating joint of the negative pressure component external；The wall of the separating joint is provided with entering of being run through vertically
Liquid passage and radially run through enter to consider passage to be worth doing；The feed pathway is entered to consider passage to be worth doing and do not connect mutually with described；It is described enter
With inlet opening be connected the feed liquor annular space by liquid passage；It is described to enter to consider passage to be worth doing and enter to consider annular space phase to be worth doing with described by the negative pressure component
Connection；The negative pressure component can produce negative pressure to enter to consider the chip that annular space sucks the scraping component generation to be worth doing with by described.
2. drifting scraper as claimed in claim 1, it is characterised in that：The negative pressure component includes：Enter described in being connected to
The driving nozzle of liquid upper end of joint and the Venturi tube above the driving nozzle；
The driving nozzle can be to the entrance hydrojet of the Venturi tube；Between the driving nozzle and the Venturi tube
Gap is entered to consider passage to be worth doing and communicate with described.
3. drifting scraper as claimed in claim 2, it is characterised in that：The Venturi tube includes the larynx sequentially arranged
Pipe, the first anemostat and the second anemostat；The Venturi tube fixed sleeves are provided with diffuser set and trunnion set.
4. drifting scraper as claimed in claim 3, it is characterised in that：Nozzle pressure is provided with below the driving nozzle
Cap, and the upper end of the liquid inlet joint is connected to by nozzle cage；The lower end of the top connection is connected to the Venturi tube
Between the upper end of upper end and diffuser set.
5. drifting scraper as claimed in claim 4, it is characterised in that：The lower end of the trunnion set is connected by adapter sleeve
The upper end of the liquid inlet joint；The connection is arranged with the connecting hole for radially being run through；The connecting hole is by the gap
Enter to consider channel connection to be worth doing with described；The locking nut being sheathed on outside the trunnion set is provided with above the adapter sleeve.
6. drifting scraper as claimed in claim 5, it is characterised in that：The upper end of the scraping inner tube is connected with lower sealing
Joint, sealed base is provided between the lower seal nipple and the liquid inlet joint；The sealed base is provided with gasket seal
And sealing ring；The sealed base is located at the lower section of the adapter sleeve；The lower end of the separating joint connects institute by female connector
State the upper end of lower seal nipple.
7. drifting scraper as claimed in claim 6, it is characterised in that：In the lower end of the liquid inlet joint and the scraping
Lower liquid inlet joint is provided between the upper end of pipe；The threaded upper ends of the lower liquid inlet joint connect the lower end of the liquid inlet joint, institute
State and be provided with apical ring between the lower end of lower liquid inlet joint and the upper end of the scraping inner tube；The lower end of the lower liquid inlet joint is provided with
The tapering engaged with the apical ring.
8. the drifting scraper as described in claim 1-7 is any, it is characterised in that：The lower end of the scraping inner tube is connected with
Lower nozzle.
9. drifting scraper as claimed in claim 8, it is characterised in that：The lower end of the scraping inner tube is connected with lower nozzle
Joint, the lower nozzle is connected on the lower nozzle connection by lower nozzle cage.
10. drifting scraper as claimed in claim 8, it is characterised in that：The inwall of the drifting overcoat is formed with reducing
Step；The reducing step enters to consider the bottom surface of annular space to be worth doing described in being formed.
11. drifting scrapers as claimed in claim 8, it is characterised in that：The upper end of the drifting overcoat is provided with will be described
Enter to consider to be worth doing the suction bits check valve of annular space and ft connection；It is described inhale bits check valve it is described enter consider to be worth doing annular space pressure be less than external pressure
When open.
12. drifting scrapers as claimed in claim 11, it is characterised in that：It is described inhale bits check valve include inhale bits valve seat with
And located at the suction bits valve plate inhaled on bits valve seat；The bits valve plate of inhaling is covered on the suction bits valve seat by torsionspring.
13. drifting scrapers as claimed in claim 8, it is characterised in that：It is described to enter to consider to be worth doing be provided with annular space and scraped near described
Cut the filter mechanism of inner tube upper end.
14. drifting scrapers as claimed in claim 13, it is characterised in that：The filter mechanism includes the scraping inner tube
Radially convex to form protruding circular ring；The protruding circular ring is provided with the filter bores for circumferentially being run through.
15. drifting scrapers as claimed in claim 1, it is characterised in that：
The drifting overcoat is radially provided with multiple placement through holes；
The scraping component includes positioned at the cutting knife placed in through hole and covers the cutting knife gear on the placement through hole
Plate；Spring is provided between the cutting knife baffle plate and the cutting knife；The slot stretched out for cutting knife is opened on the cutting knife baffle plate；Institute
State cutting knife baffle plate be bolted be covered on it is described placement through hole on.
16. drifting scrapers as claimed in claim 1, it is characterised in that：Pressure holes length vertically is more than institute
State drifting overcoat and be distributed the region of scraping component length vertically.
17. drifting scrapers as claimed in claim 1, it is characterised in that：The inlet opening is elongated hole, and quantity is many
It is individual；Multiple inlet openings are uniformly distributed along the circumference of the liquid inlet joint.
18. drifting scrapers as claimed in claim 1, it is characterised in that：The upper end duplex joint of the outer tube；It is described double
The upper end of coupling head is connected with jointing by connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224238.8A CN106761562B (en) | 2016-12-27 | 2016-12-27 | A kind of drifting scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224238.8A CN106761562B (en) | 2016-12-27 | 2016-12-27 | A kind of drifting scraper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761562A true CN106761562A (en) | 2017-05-31 |
| CN106761562B CN106761562B (en) | 2019-01-18 |
Family
ID=58926334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611224238.8A Active CN106761562B (en) | 2016-12-27 | 2016-12-27 | A kind of drifting scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761562B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680538A (en) * | 2022-11-18 | 2023-02-03 | 中国石油天然气集团有限公司 | Jetting device for cutting in underground drilling tool |
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| CN103541690A (en) * | 2013-11-14 | 2014-01-29 | 华鼎鸿基石油工程技术(北京)有限公司 | Pigging and skiving device |
| CN204252953U (en) * | 2014-09-29 | 2015-04-08 | 中国石油天然气股份有限公司 | Drifting scraping integrated tool |
| CN104653154A (en) * | 2015-02-25 | 2015-05-27 | 中国石油天然气股份有限公司 | Drifting and scraping integrated tool |
| CN104763367A (en) * | 2015-03-24 | 2015-07-08 | 中国石油天然气股份有限公司 | Pigging and pipe scraping integrated tool |
| CN204827314U (en) * | 2015-07-23 | 2015-12-02 | 中国石油化工股份有限公司 | Borehole operation leads to integrated instrument of scraping |
| CN205445551U (en) * | 2016-03-23 | 2016-08-10 | 中国石油化工股份有限公司 | Trinity drifting scraper |
| CN105971541A (en) * | 2016-07-07 | 2016-09-28 | 合力（天津）石油钻采技术服务有限公司 | Vacuum suction pitshaft fishing and cleaning tool |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541690A (en) * | 2013-11-14 | 2014-01-29 | 华鼎鸿基石油工程技术(北京)有限公司 | Pigging and skiving device |
| CN204252953U (en) * | 2014-09-29 | 2015-04-08 | 中国石油天然气股份有限公司 | Drifting scraping integrated tool |
| CN104653154A (en) * | 2015-02-25 | 2015-05-27 | 中国石油天然气股份有限公司 | Drifting and scraping integrated tool |
| CN104763367A (en) * | 2015-03-24 | 2015-07-08 | 中国石油天然气股份有限公司 | Pigging and pipe scraping integrated tool |
| CN204827314U (en) * | 2015-07-23 | 2015-12-02 | 中国石油化工股份有限公司 | Borehole operation leads to integrated instrument of scraping |
| CN205445551U (en) * | 2016-03-23 | 2016-08-10 | 中国石油化工股份有限公司 | Trinity drifting scraper |
| CN105971541A (en) * | 2016-07-07 | 2016-09-28 | 合力（天津）石油钻采技术服务有限公司 | Vacuum suction pitshaft fishing and cleaning tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680538A (en) * | 2022-11-18 | 2023-02-03 | 中国石油天然气集团有限公司 | Jetting device for cutting in underground drilling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106761562B (en) | 2019-01-18 |
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