CN109915075A - The downhole tool of logical function is scraped with milling - Google Patents
The downhole tool of logical function is scraped with milling Download PDFInfo
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- CN109915075A CN109915075A CN201910320415.XA CN201910320415A CN109915075A CN 109915075 A CN109915075 A CN 109915075A CN 201910320415 A CN201910320415 A CN 201910320415A CN 109915075 A CN109915075 A CN 109915075A
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Abstract
The present invention relates to oil gas field downhole tool technical fields, it is a kind of downhole tool that logical function is scraped with milling, including scraper, wall scraper and drifting device, scraper lower end is fixedly installed togather with wall scraper upper end, and wall scraper lower end is fixedly installed togather with drifting device upper end；Scraper includes that top connection, upper outer sleeve, cone pipe, milling cutter, sliding set, lower outer sleeve and lower contact, top connection lower outside are fixedly installed togather with upper outer sleeve upper inner.Structure of the invention is reasonable, easy to use, by the way that scraper, wall scraper and drifting device are successively fixedly installed togather, to only realize drifting by boring under one time, scrape wall and mill bell-mouthed underground work；The scraping to the borehole wall is realized by the cooperation of milling cutter and cone segments；Preferably transmitting torque is connected by key by sliding set and upper outer sleeve；It avoids wall scraper and drifting device from rotating with scraper by outer limited block and inner limited block cooperation, has the characteristics that efficient, quick and stable.
Description
Technical field
The present invention relates to oil gas field downhole tool technical fields, are a kind of downhole tools that logical function is scraped with milling.
Background technique
Currently, Shallow Oil-Gas is gradually exhausted by exploitation in petroleum exploration and development process.Therefore, it obtains and is not drilled toward depths
Resource is sought, is gradually drilled within myriametre from several hundred rice, in order to guarantee the smooth of wellbore construction, and according to the load energy of trepan
Power, reservoir pressure coefficient can carry out drilling well using different drill bits as needed in work progress, then use different casings
Complete the support to the top borehole wall.So casing programme is also different in different constructions.It is bored in deep-well and ultradeep well
When spy, the production string majority of target zone all uses the casing of the small level-one of specification to be suspended on payzone top and has carried out well.In ultra-deep
Well track can often change in well drilling process, hardly realize vertical.This drilling tool that will result in several kms removed
It rubs in journey to internal surface of casing, at extension hanger undergauge, the box cupling frictional impact meeting of drilling tool is it is obvious that especially
The upper surface that pipe nipple connects under hanger is more serious, or even pounds out the burr of inner bead, these burrs can be scratched easily
The packing element of packer, causes packer to fail.To guarantee that the safety of packer sealing will be to oil before packer tripping in
Layer casing carries out drifting, scrapes wall and milling bell mouth operation, particular for the complete of guarantee tripping in well completion packer packing element, it is necessary to right
Repair is carried out at undergauge.Existing flow chart need to distinguish tripping in drifting device drifting, and tripping in wall scraper scrapes wall, then tripping in milling cone
Milling horn mouth, point three brill could be completed, and for deep-well and ultradeep well, the brill time is longer next time, the increase activity duration,
Working efficiency is low.
Summary of the invention
The present invention provides a kind of downhole tools that logical function is scraped with milling, overcome the defects of the prior art,
It can effectively solve existing tool to need just to be able to achieve drifting by boring under three times, scrape wall and mill bell-mouthed problem.
The technical scheme is that realized by following measures: a kind of downhole tool for scraping logical function with milling,
Including scraper, wall scraper and drifting device, scraper lower end is fixedly installed togather with wall scraper upper end, wall scraper lower end and logical
Well device upper end is fixedly installed togather；Scraper includes top connection, upper outer sleeve, cone pipe, milling cutter, sliding set, lower outer sleeve
And lower contact, top connection lower outside are fixedly installed togather with upper outer sleeve upper inner, upper outer sleeve upper inner is equipped with
Upper sealing ring platform, is equipped with cone pipe in upper outer sleeve top, and cone pipe includes straight pipe and cone segments, straight pipe lower end and cone
Duan Shangduan is fixed together, and straight pipe upper end is with upper sealing ring platform upper inner by that can prevent cone pipe is opposite from going up on outer sleeve
Capable unidirectional locking component is fixedly installed togather, and the straight pipe lower outside of corresponding upper sealing ring platform lower position is equipped with down close
Seal ring platform, upper sealing ring platform lower inside are mutually sealed with lower sealing ring platform upper outside, corresponding lower sealing ring platform top position
Upper annular space chamber, the upper outer sleeve and lower sealing ring of corresponding upper sealing ring platform lower position are formed between straight pipe and upper sealing ring platform
Lower annular space chamber is formed between platform, straight pipe lower inside is equipped with the land that builds the pressure, on the straight pipe for corresponding to the land top position that builds the pressure
The upper circulation port for circumferentially having at least one that can be connected to upper annular space chamber on the outside of portion, cone segments are in up big and down small rotary table
Body, the upper outer sleeve lower outside of corresponding cone fragment position circumferentially have at least one to install square hole, corresponding each installation
It is equipped with mounting groove up and down on the outside of the cone segments of square hole position, is equipped with milling cutter, each milling cutter in each installation square hole
Inside, which is equipped with, to be installed in the mounting groove of corresponding position with the matched mounting blocks of mounting groove, each mounting blocks, often
The outside of a milling cutter can be stretched out out of installation square hole with cone segments downlink, between corresponding every two milling cutter outside the cone segments of position
Side is equipped with circulation passage；The upper outer sleeve lower outside of corresponding installation square hole lower position circumferentially has at least one energy
The lower circulation port being connected to lower annular space chamber；It is fixedly installed togather on the outside of cone segments lower end inside and sliding set upper side, sliding set
It is fixedly installed togather by fixed shear pin with upper outer sleeve lower part on the outside of middle part, sliding set lower outside and upper outer sleeve lower part
Inside, which is connected by key, to be installed together；Upper outer sleeve lower outside is fixedly installed togather with lower outer sleeve, in lower outer sleeve
Limit sleeve is located at sliding set lower inside lower contact equipped with top, and lower contact upper outside circumferentially has to be limited outside at least three
Position block, the sliding set lower inside for corresponding to position between the adjacent outer limited block of every two are equipped with inner limited block, lower contact lower end
Outside is fixedly installed togather with wall scraper；Outside, which is equipped with, in the middle part of lower contact to cover the stop collar that downlink is limited to sliding
Platform, limited ring dais upper end are first distance at a distance from sliding set lower end, and the height of outer limited block is the first height, inner limited block
Height be the second height, the height that upper sealing ring platform lower inside and lower sealing ring platform upper outside mutually seal is third height
Degree, the first height are less than first distance, and the second height is less than first distance, and third height is less than first distance.
Here is the further optimization and/or improvements to invention technology described above scheme:
Above-mentioned milling cutter can be in hexagon, and the leading flank of milling cutter and the trailing flank of milling cutter are vertical plane, the top surface of milling cutter and milling
The bottom surface of knife is horizontal plane, is known as interior scarf positioned at the side of milling cutter inside upper part, interior scarf and cone segments are tangent, interior
Scarf is equipped with mounting blocks.
Above-mentioned mounting groove can be the dovetail groove of inner wide and outer narrow.
Above-mentioned unidirectional locking component may include locking mandrel, outer locking tooth, lock ring, interior locking tooth and anti-turn screw, upper outer
Sleeve inside middle portion is fixedly installed with lock ring, is from top to bottom continuously equipped with locking tooth at least one set, interior locking tooth on the inside of lock ring
It is wide at the top and narrow at the bottom for the land and land of the rectangular triangle in section, locking core is equipped on the inside of the upper outer sleeve of corresponding lock ring position
Axis corresponds to the outer retaining for being equipped on the outside of the locking mandrel of position between every two adjacent interior locking tooth and matching with interior locking tooth
Tooth, outer locking tooth is the land of the rectangular triangle in section and land is up-narrow and down-wide；Circumferentially have on together on the inside of lock ring
The locking mandrel outside of the anti-rotation groove of lower perforation, corresponding anti-rotation groove location is equipped at least one anti-turn screw and each anti-turn screw
In the anti-rotation groove that outer end is respectively positioned on；It is fixedly installed togather on the inside of locking mandrel lower end outside and straight pipe upper end.
Above-mentioned sliding set can be hollow three-level Step Shaft, sliding set include from top to bottom limit section that outer diameter is sequentially increased,
Changeover portion and fixed section, limit section lower end are fixedly installed togather with changeover portion upper end, the milling cutter of corresponding limit section outer fix
Inside lower end is butted on changeover portion upper end；Changeover portion lower end is fixedly installed togather with fixed section upper end, and outside is logical in the middle part of fixed section
Fixed shear pin is crossed to be fixedly installed togather with upper outer sleeve lower part；On the inside of fixed section by it is upper be at least successively arranged the first inner groove and
Second inner groove, the first inner groove internal diameter correspond to position between the adjacent outer limited block of every two less than the second outer groove internal diameter
Inner limited block is equipped in second inner groove；Fixed section lower outside and upper outer sleeve lower inside, which are connected by key, is mounted on one
It rises.
Above-mentioned to may also include interior land, upper bearing (metal) and lower bearing, lower outer sleeve lower end inside, which is equipped with, to be located under limited ring dais
The interior land of side is equipped with lower bearing between the lower outer sleeve and lower contact of position between corresponding limited ring dais and interior land, corresponding
Upper bearing (metal) is equipped between the lower outer sleeve of limited ring dais top position and lower contact.
It is above-mentioned to may also include O-ring seals and O-ring seals, at least O shape together is equipped between top connection and upper outer sleeve
Sealing ring, equipped at least O-ring seals, correspondence descend circulation port lower position together between upper sealing ring platform and lower sealing ring platform
At least O-ring seals together are equipped between sliding set and upper outer sleeve, it is close to be equipped at least one O shape between cone pipe and sliding set
Sealing is equipped at least one O-ring seals between the sliding set and lower contact of corresponding outer limited block top position.
Above-mentioned lower contact lower end can be threadably secured with wall scraper upper end and be installed together；Wall scraper lower end and drifting device
Upper end, which is threadably secured, to be installed together；Top connection lower outside is threadably secured with upper outer sleeve upper inner and is mounted on
Together；Upper outer sleeve inside middle portion, which is threadably secured, is equipped with lock ring；It is logical on the outside of cone segments lower end inside and sliding set upper side
It crosses to be screwed and be installed together；Upper outer sleeve lower outside is threadably secured with lower outer sleeve and is installed together.
Above-mentioned top connection lower outside can be screwed by twin-stage with upper outer sleeve upper inner and is installed together；It is upper outer
Sleeve inside middle portion is fixedly installed with lock ring by buttless thread；Upper outer sleeve lower outside and lower outer sleeve pass through twin-stage screw thread
It is fixedly installed togather.
Structure of the invention is reasonable, easy to use, by the way that scraper, wall scraper and drifting device are successively fixedly mounted on one
It rises, to only realize drifting by being bored under one time, scrape wall and mill bell-mouthed underground work；Pass through the cooperation of milling cutter and cone segments
Realize the scraping to the borehole wall；Preferably transmitting torque is connected by key by sliding set and upper outer sleeve；By outer limited block and
Inner limited block cooperation avoids wall scraper and drifting device from rotating with scraper, has the characteristics that efficient, quick and stable.
Detailed description of the invention
Attached drawing 1 is the schematic view of the front view of preferred embodiment.
Attached drawing 2 is the main view section view enlarged structure schematic diagram of scraper in Fig. 1.
Attached drawing 3 is schematic diagram of main cross-sectional structure after 2 pitching of attached drawing builds the pressure under milling cutter stretching state.
Attached drawing 4 is schematic cross-sectional view of the Fig. 2 at A-A.
Attached drawing 5 is schematic cross-sectional view of the Fig. 3 at B-B.
Attached drawing 6 is partial enlargement structural representation of the Fig. 2 at C.
Coding in attached drawing is respectively as follows: 1 for top connection, and 2 be upper outer sleeve, and 3 be milling cutter, and 4 be lower outer sleeve, 5 be under connect
Head, 6 be upper sealing ring platform, and 7 be straight pipe, and 8 be cone segments, and 9 be lower sealing ring platform, and 10 be upper annular space chamber, and 11 be lower annular space chamber,
12 is build the pressure land, and 13 be upper circulation port, and 14 be installation square hole, and 15 be mounting groove, and 16 be mounting blocks, and 17 be lower circulation port, and 18
It is outer limited block for fixed shear pin, 19,20 be inner limited block, and 21 be limited ring dais, and 22 be locking mandrel, and 23 be outer locking tooth,
24 be lock ring, and 25 be interior locking tooth, and 26 be anti-turn screw, and 27 be limit section, and 28 be changeover portion, and 29 be fixed section, and 30 be inner ring
Platform, 31 be upper bearing (metal), and 32 be lower bearing, and 33 be O-ring seals, and 34 be O-ring seals, and 35 be the ball that builds the pressure, and 36 be circulation passage,
37 be wall scraper, and 38 be drifting device.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to Figure of description 1
Butut mode be described, such as: front, rear, top, and bottom, left and right positional relationship be the Butut according to Figure of description
Direction determines.
Below with reference to examples and drawings, the invention will be further described:
As shown in attached drawing 1,2,3,4,5,6, it includes scraper, wall scraper 37 and drifting that there is milling, which to scrape the downhole tool of logical function, for this
Device 38, scraper lower end are fixedly installed togather with 37 upper end of wall scraper, the fixed peace in 37 lower end of wall scraper and 38 upper end of drifting device
It is fitted together；Scraper includes top connection 1, upper outer sleeve 2, cone pipe, milling cutter 3, slides set, lower outer sleeve 4 and lower contact 5,
1 lower outside of top connection is fixedly installed togather with upper 2 upper inner of outer sleeve, and upper 2 upper inner of outer sleeve is equipped with upper sealing
Land 6, is equipped with cone pipe in upper 2 top of outer sleeve, and cone pipe includes straight pipe 7 and cone segments 8,7 lower end of straight pipe and cone
8 upper ends of section are fixed together, and 7 upper end of straight pipe is with 6 upper inner of upper sealing ring platform by that can prevent cone pipe is opposite from going up housing
The unidirectional locking component of 2 uplinks of cylinder is fixedly installed togather, 7 lower outside of straight pipe of corresponding 6 lower position of upper sealing ring platform
Equipped with lower sealing ring platform 9,6 lower inside of upper sealing ring platform is mutually sealed with 9 upper outside of lower sealing ring platform, corresponding lower sealing ring platform
Upper annular space chamber 10 is formed between the straight pipe 7 and upper sealing ring platform 6 of 9 top positions, corresponds to the upper of 6 lower position of upper sealing ring platform
Lower annular space chamber 11 is formed between outer sleeve 2 and lower sealing ring platform 9,7 lower inside of straight pipe is equipped with the land 12 that builds the pressure, and correspondence builds the pressure
The upper circulation that 7 upper outside of straight pipe of 12 top position of land circumferentially has at least one that can be connected to upper annular space chamber 10
Hole 13, cone segments 8 are in up big and down small round estrade, and 2 lower outside of upper outer sleeve of corresponding 8 position of cone segments circumferentially has
At least one installation square hole 14 corresponds to the mounting groove being equipped on the outside of the cone segments 8 of each installation 14 position of square hole up and down
15, be equipped with milling cutter 3 in each installation square hole 14, be equipped on the inside of each milling cutter 3 can with the matched mounting blocks 16 of mounting groove 15,
Each mounting blocks 16 are installed in the mounting groove 15 of corresponding position, and the outside of each milling cutter 3 can be with 8 downlink of cone segments
It is stretched out out of installation square hole 14, is equipped with circulation passage 36 on the outside of the cone segments 8 of position between corresponding every two milling cutter 3；It is corresponding
2 lower outside of upper outer sleeve of installation 14 lower position of square hole circumferentially has at least one that can be connected to lower annular space chamber 11
Lower circulation port 17；It is fixedly installed togather on the outside of 8 lower end inside of cone segments and sliding set upper side, sliding set middle part outside passes through solid
Determine shear pin 18 to be fixedly installed togather with upper 2 lower part of outer sleeve, sliding set lower outside and upper 2 lower inside of outer sleeve pass through key
Connection is installed together；Upper 2 lower outside of outer sleeve is fixedly installed togather with lower outer sleeve 4, lower 4 internal position limited sleeve of outer sleeve dress
There is top to be located at sliding set lower inside lower contact 5,5 upper outside of lower contact circumferentially there are at least three outer limited blocks
19, the sliding set lower inside for corresponding to position between the adjacent outer limited block 19 of every two is equipped with inner limited block 20, under lower contact 5
End outside is fixedly installed togather with wall scraper 37；5 middle part outside of lower contact is equipped with can be to the limit that sliding set downlink is limited
Position land 21,21 upper end of limited ring dais are first distance at a distance from sliding set lower end, and the height of outer limited block 19 is first high
Degree, the height of inner limited block 20 are the second height, and 6 lower inside of upper sealing ring platform is mutually sealed with 9 upper outside of lower sealing ring platform
Height be third height, the first height be less than first distance, the second height be less than first distance, third height less than first away from
From.According to demand, wall scraper 37 can be conventionally known scraping wall 37, and drifting device 38 can be conventionally known gauguste cutter,
According to shaft structure size, by parameters such as scraping tubing string position outer diameter and materials, the gauguste cutter diameter that selects specification suitable,
The milling cutter 3 of 37 diameter of scraping wall and scraper.It is of the invention use process is as follows:
(1) it transfers pipe string: first scraper, wall scraper 37 and drifting device 38 being successively fixedly installed togather, then by upper tube
String is fixedly installed togather with top connection 1, and finally the present invention connected goes into the well；
(2) when transferring the present invention connected into well, drifting operation drifting operation: is carried out by gauguste cutter；When transferring pipe string
Guarantee the present invention at the uniform velocity and steadily, forbids emergency stop suddenly to put, drilling string not well braked, percussion drill；
(3) it scrapes wall operation: when invention decentralization is to 20 meters above and below packer set position, scraping wall 37 is put into pipe string
Start ball, and suppressed, makes wall scraper 37 carry out scraping wall operation to open 37 scraper of wall scraper；
(4) scraping: after the completion of drifting operation and scraping wall operation, the present invention above being mentioned to more than horn mouth 10 meters or so,
Into pipe string, investment builds the pressure ball 35 to the land 12 that builds the pressure at this time, that is, the ball 35 that builds the pressure takes a seat, starts to suppress at this time；When pressure is raised to one
After definite value, decline suddenly illustrates scraper instrument start-up, i.e., fixed shear pin 18 is cut, at this time since the obstruction for the land 12 that builds the pressure is made
With liquid in pipe pushes cone pipe to move down by the ball 35 that builds the pressure, and is cooperated at this time by milling cutter 3 and cone segments 8, makes milling cutter 3
Gradually it is stretched out out of installation square hole 14 and is located at upper 2 outside of outer sleeve, and make to mill since mounting groove 15 is matched with mounting blocks 16
Knife 3 will not slip on the outside of upper outer sleeve 2；Sliding set stops downlink after sliding set lower end is contacted with limited ring dais 21, at this time
Upper tube string is rotated, scraper can be made to carry out scraping；
(5) upper lifting pipe string: after scraping, the present invention is directly above proposed.
Since third height is less than first distance, so when sliding set lower end and limited ring dais 21 contact, upper sealing ring
6 lower inside of platform is no longer contacted with 9 upper outside of lower sealing ring platform, so that upper annular space chamber 10 is connected to lower annular space chamber 11, at this time
Upper circulation port 13 is connected to lower circulation port 17, i.e., is connected to outside in pipe string with pipe string；Since the first height and the second height are respectively less than
First distance, so while the downlink of sliding set, makes outer limited block 19 and inner limited block 20 misplace completely, therefore the rotation of scraper
Turn not will drive lower contact 5 and wall scraper 37 and drifting device 38 rotates；In addition, being enhanced in the present invention by the way that circulation passage 36 is arranged
The circulation of liquid between cone segments 8 and upper outer sleeve 2.Structure of the invention is reasonable, easy to use, by by scraper, wall scraper 37
It is successively fixedly installed togather with drifting device 38, to only can be achieved with drifting by brill under one, scrape wall and mill bell-mouthed
Underground work has the characteristics that efficient, quick and stable.
The above-mentioned downhole tool that there is milling to scrape logical function can be made further optimization and/or improvements according to actual needs:
As shown in attached drawing 1,2,3,4,5,6, milling cutter 3 is in hexagon, and the leading flank of milling cutter 3 and the trailing flank of milling cutter 3 are perpendicular
It faces directly, the top surface of milling cutter 3 and the bottom surface of milling cutter 3 are horizontal plane, it is known as interior scarf positioned at the side of 3 inside upper part of milling cutter,
Interior scarf and cone segments 8 are tangent, and interior scarf is equipped with mounting blocks 16.In use, in setting in this way makes
Incisal bevel is more reliable and more stable when moving along cone segments 8.Mounting groove 15 can be conventionally known dovetail groove, I-shaped according to demand
Slot, T-slot etc..
As shown in attached drawing 1,2,3,4,5,6, mounting groove 15 is the dovetail groove of inner wide and outer narrow.In use, pass through this
The setting of sample not only makes interior incisal bevel more reliable and more stable when moving along cone segments 8, moreover it is possible to easy to process.
As shown in attached drawing 1,2,3,4,5,6, unidirectional locking component includes locking mandrel 22, outer locking tooth 23, lock ring 24, interior
Locking tooth 25 and anti-turn screw 26, upper 2 inside middle portion of outer sleeve are fixedly installed with lock ring 24, and 24 inside of lock ring is continuous from top to bottom
Equipped with locking tooth 25 at least one set, interior locking tooth 25 is the land of the rectangular triangle in section and land is wide at the top and narrow at the bottom, corresponding
Locking mandrel 22 is equipped on the inside of the upper outer sleeve 2 of 24 position of lock ring, the lock of position between corresponding every two adjacent interior locking tooth 25
The outer locking tooth 23 to match with interior locking tooth 25 is only equipped on the outside of mandrel 22, outer locking tooth 23 is the rectangular triangle in section
Land and land it is up-narrow and down-wide；Circumferentially there are anti-rotation groove together up and down, corresponding anti-rotation slot position in 24 inside of lock ring
It is equipped in the anti-rotation groove that at least one anti-turn screw 26 and 26 outer end of each anti-turn screw are respectively positioned on the outside of the locking mandrel 22 set；
It is fixedly installed togather on the inside of 22 lower end outside of locking mandrel and 7 upper end of straight pipe.In use, setting in this way
It can be moved up to avoid locking mandrel 22 relative to lock ring 24, to realize unidirectional locking function.
As shown in attached drawing 1,2,3,4,5,6, sliding set be hollow three-level Step Shaft, sliding set include from top to bottom outer diameter according to
Limit section 27, changeover portion 28 and the fixed section 29 of secondary increase, limit 27 lower end of section are fixedly installed togather with 28 upper end of changeover portion,
3 inside lower end of milling cutter of corresponding limit 27 outer fix of section is butted on 28 upper end of changeover portion；On 28 lower end of changeover portion and fixed section 29
End is fixedly installed togather, and 29 middle part outside of fixed section is fixedly installed togather by fixed shear pin 18 with upper 2 lower part of outer sleeve；
29 inside of fixed section is at least successively arranged the first inner groove and the second inner groove by upper, and the first inner groove internal diameter is less than the second outer ring
Slot internal diameter corresponds to and is equipped with inner limited block 20 in the second inner groove of position between the adjacent outer limited block 19 of every two；Fixed section
29 lower outsides are connected by key with upper 2 lower inside of outer sleeve and are installed together.In use, by setting first
Annular groove is located at 5 upper end of lower contact in the first inner groove, to can pass through the first inner ring set upper side in sliding set folding process
It realizes to move down sliding set with 5 upper-end contact of lower contact and limit；By the way that the second inner groove is arranged, it is convenient for outer 19 He of limited block
Inner limited block 20 cooperates, so that wall scraper 37 and drifting device 38 be avoided to rotate with scraper.
It further include interior land 30, upper bearing (metal) 31 and lower bearing 32, lower 4 lower end of outer sleeve as shown in attached drawing 1,2,3,4,5,6
Inside is equipped with the interior land 30 for being located at 21 lower section of limited ring dais, the lower housing of position between corresponding limited ring dais 21 and interior land 30
It is equipped with lower bearing 32 between cylinder 4 and lower contact 5, is set between the lower outer sleeve 4 and lower contact 5 of corresponding 21 top position of limited ring dais
There is upper bearing (metal) 31.In use, by installation upper bearing (metal) 31 and lower bearing 32, under reducing between outer sleeve 4 and lower contact 5
Frictional force increase service life to mitigate the abrasion of lower outer sleeve 4 and lower contact 5.
It further include O-ring seals 33 and O-ring seals 34 as shown in attached drawing 1,2,3,4,5,6, top connection 1 and upper housing
At least one of O-ring seals 33 are equipped between cylinder 2, equipped at least O shape is close together between upper sealing ring platform 6 and lower sealing ring platform 9
Seal 33 is equipped at least O-ring seals 33 together between the sliding set and upper outer sleeve 2 of corresponding lower 17 lower position of circulation port,
At least one O-ring seals 34 is equipped between cone pipe and sliding set, the sliding set of corresponding outer 19 top position of limited block is under
At least one O-ring seals 34 is equipped between connector 5.In use, pass through installation O-ring seals 33 and O-ring seals
34, enhance the leakproofness between each component of the present invention.
As shown in attached drawing 1,2,3,4,5,6,5 lower end of lower contact and 37 upper end of wall scraper are threadably secured and are mounted on one
It rises；37 lower end of wall scraper is threadably secured with 38 upper end of drifting device and is installed together；1 lower outside of top connection and upper outer sleeve
2 upper inners, which are threadably secured, to be installed together；Upper 2 inside middle portion of outer sleeve, which is threadably secured, is equipped with lock ring 24；Cone
It is threadably secured and is installed together on the outside of 8 lower end inside of body section and sliding set upper side；Upper 2 lower outside of outer sleeve and lower housing
Cylinder 4, which is threadably secured, to be installed together.In use process, the fixed installation mode being connected through a screw thread is each convenient for the present invention
Disassembly, installation and replacement between component.
As shown in attached drawing 1,2,3,4,5,6,1 lower outside of top connection and upper 2 upper inner of outer sleeve pass through twin-stage screw thread
It is fixedly installed togather；Upper 2 inside middle portion of outer sleeve is fixedly installed with lock ring 24 by buttless thread；Outside upper 2 lower part of outer sleeve
Side is screwed by twin-stage with lower outer sleeve 4 and is installed together.In use, setting in this way enhances the present invention
Use intensity and stability when in use.
The above technical characteristic constitutes highly preferred embodiment of the present invention, with stronger adaptability and best implementation effect
Fruit can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (10)
1. a kind of downhole tool for scraping logical function with milling, it is characterised in that including scraper, wall scraper and drifting device, scraper
Lower end is fixedly installed togather with wall scraper upper end, and wall scraper lower end is fixedly installed togather with drifting device upper end；Scraper packet
Include top connection, upper outer sleeve, cone pipe, milling cutter, sliding set, lower outer sleeve and lower contact, top connection lower outside and upper housing
Cylinder upper inner is fixedly installed togather, and upper outer sleeve upper inner is equipped with upper sealing ring platform, is equipped with cone in upper outer sleeve top
Body pipe, cone pipe include straight pipe and cone segments, and straight pipe lower end is fixed together with cone segments upper end, straight pipe upper end with it is upper
Sealing land upper inner, which passes through, can prevent the unidirectional locking component of the relatively upper outer sleeve uplink of cone pipe from being fixedly installed togather,
The straight pipe lower outside of corresponding upper sealing ring platform lower position is equipped with lower sealing ring platform, and upper sealing ring platform lower inside is close under
Seal ring platform upper outside mutually seals, and upper annular space is formed between the straight pipe and upper sealing ring platform of corresponding lower sealing ring platform top position
Chamber corresponds to and forms lower annular space chamber between the upper outer sleeve and lower sealing ring platform of upper sealing ring platform lower position, in straight tube pars infrasegmentalis
Side is equipped with and builds the pressure land, the straight pipe upper outside of the corresponding land top position that builds the pressure circumferentially have at least one can with it is upper
The upper circulation port of annular space chamber connection, cone segments are in up big and down small round estrade, outside the upper outer sleeve lower part of corresponding cone fragment position
Lateral edge circle distribution has at least one to install square hole, is equipped with up and down on the outside of the cone segments of corresponding each installation square hole position
Mounting groove, milling cutter is equipped in each installation square hole, be equipped on the inside of each milling cutter can with the matched mounting blocks of mounting groove, often
A mounting blocks are installed in the mounting groove of corresponding position, and the outside of each milling cutter can be with cone segments downlink from installation side
It is stretched out in hole, is equipped with circulation passage on the outside of the cone segments of position between corresponding every two milling cutter；Orientation under corresponding installation square hole
The lower circulation port that the upper outer sleeve lower outside set circumferentially has at least one that can be connected to lower annular space chamber；Cone segments lower end
It is fixedly installed togather on the outside of inside and sliding set upper side, sliding set middle part outside is solid by fixed shear pin and upper outer sleeve lower part
Dingan County is fitted together, and sliding set lower outside is connected by key with upper outer sleeve lower inside to be installed together；Under upper outer sleeve
It is fixedly installed togather on the outside of portion with lower outer sleeve, lower outer sleeve internal position limited sleeve is located under sliding set lower inside equipped with top to be connect
Head, lower contact upper outside circumferentially have at least three outer limited blocks, correspond to position between the adjacent outer limited block of every two
Sliding set lower inside be equipped with inner limited block, lower contact lower end outside is fixedly installed togather with wall scraper；In lower contact
Being equipped on the outside of portion can be the to the limited ring dais that sliding set downlink is limited, at a distance from limited ring dais upper end and sliding set lower end
One distance, the height of outer limited block are the first height, and the height of inner limited block is the second height, upper sealing ring platform lower inside with
The height that lower sealing ring platform upper outside mutually seals is third height, and the first height is less than first distance, and the second height is less than the
One distance, third height are less than first distance.
2. the downhole tool according to claim 1 that there is milling to scrape logical function, it is characterised in that milling cutter is in hexagon, milling
The leading flank of knife and the trailing flank of milling cutter are vertical plane, and the top surface of milling cutter and the bottom surface of milling cutter are horizontal plane, are located at milling cutter
The side of inside upper part is known as interior scarf, and interior scarf and cone segments are tangent, and interior scarf is equipped with mounting blocks.
3. the downhole tool according to claim 2 that there is milling to scrape logical function, it is characterised in that mounting groove is inner wide and outer narrow
Dovetail groove.
4. the downhole tool according to claim 1 or 2 or 3 that there is milling to scrape logical function, it is characterised in that unidirectional locking group
Part includes locking mandrel, outer locking tooth, lock ring, interior locking tooth and anti-turn screw, and upper outer sleeve inside middle portion is fixedly installed with lock
Ring, lock ring inside is continuous from top to bottom to be equipped with locking tooth at least one set, and interior locking tooth is the land of the rectangular triangle in section
And land is wide at the top and narrow at the bottom, and locking mandrel, corresponding every two adjacent interior locking tooth are equipped on the inside of the upper outer sleeve of corresponding lock ring position
Between position locking mandrel on the outside of be equipped with the outer locking tooth to match with interior locking tooth, outer locking tooth is section rectangular three
Angular land and land is up-narrow and down-wide；Circumferentially there are anti-rotation groove together up and down, corresponding anti-rotation groove on the inside of lock ring
In the anti-rotation groove that the locking mandrel outside of position is equipped at least one anti-turn screw and each anti-turn screw outer end is respectively positioned on；Locking
It is fixedly installed togather on the inside of mandrel lower end outside and straight pipe upper end.
5. according to claim 1 or 2 or 3 there is milling to scrape the downhole tool of logical function, it is characterised in that during sliding set is
Empty three-level Step Shaft, sliding set include limit section, changeover portion and the fixed section that from top to bottom outer diameter is sequentially increased, and limit section lower end
It is fixedly installed togather with changeover portion upper end, the milling cutter inside lower end of corresponding limit section outer fix is butted on changeover portion upper end；It crosses
It crosses section lower end to be fixedly installed togather with fixed section upper end, outside is solid by fixed shear pin and upper outer sleeve lower part in the middle part of fixed section
Dingan County is fitted together；The first inner groove and the second inner groove, the first inner groove internal diameter are at least successively arranged by upper on the inside of fixed section
Less than the second outer groove internal diameter, corresponds to and be equipped with interior limit in the second inner groove of position between the adjacent outer limited block of every two
Block；Fixed section lower outside is connected by key with upper outer sleeve lower inside and is installed together.
6. the downhole tool according to claim 4 that there is milling to scrape logical function, it is characterised in that sliding set is hollow three-level
Step Shaft, sliding set include limit section, changeover portion and the fixed section that from top to bottom outer diameter is sequentially increased, and limit section lower end and transition
Duan Shangduan is fixedly installed togather, and the milling cutter inside lower end of corresponding limit section outer fix is butted on changeover portion upper end；Under changeover portion
End is fixedly installed togather with fixed section upper end, and outside is fixedly mounted by fixed shear pin and upper outer sleeve lower part in the middle part of fixed section
Together；The first inner groove and the second inner groove are at least successively arranged by upper on the inside of fixed section, and the first inner groove internal diameter is less than the
Two outer groove internal diameters correspond to and are equipped with inner limited block in the second inner groove of position between the adjacent outer limited block of every two；It is fixed
It is connected by key and is installed together with upper outer sleeve lower inside on the outside of pars infrasegmentalis.
7. the downhole tool that described according to claim 1 or 2 or 3 or 6 there is milling to scrape logical function, it is characterised in that in further including
Land, upper bearing (metal) and lower bearing, lower outer sleeve lower end inside are equipped with the interior land being located at below limited ring dais, corresponding limited ring dais
Lower bearing, the lower housing of corresponding limited ring dais top position are equipped between the lower outer sleeve and lower contact of position between interior land
Upper bearing (metal) is equipped between cylinder and lower contact；Or/and further include O-ring seals and O-ring seals, top connection and upper outer sleeve it
Between be equipped at least one of O-ring seals, at least O-ring seals together are equipped between upper sealing ring platform and lower sealing ring platform, it is corresponding
The sliding of lower circulation port lower position is covered is equipped at least O-ring seals together between upper outer sleeve, cone pipe and sliding set
Between be equipped at least one O-ring seals, equipped at least one O between the sliding set and lower contact of corresponding outer limited block top position
Shape sealing element.
8. the downhole tool according to claim 5 that there is milling to scrape logical function, it is characterised in that further include interior land, upper axis
It holds and lower bearing, lower outer sleeve lower end inside is equipped with the interior land being located at below limited ring dais, corresponding limited ring dais and interior land
Between position lower outer sleeve and lower contact between be equipped with lower bearing, the lower outer sleeve of corresponding limited ring dais top position and under connect
Upper bearing (metal) is equipped between head；Or/and further include O-ring seals and O-ring seals, it is equipped with extremely between top connection and upper outer sleeve
Few one of O-ring seals are equipped at least O-ring seals together, corresponding lower circulation port between upper sealing ring platform and lower sealing ring platform
The sliding of lower position is covered is equipped at least O-ring seals together between upper outer sleeve, is equipped with extremely between cone pipe and sliding set
Few O-ring seals are equipped at least one O shape between the sliding set and lower contact of corresponding outer limited block top position and seal
Part.
9. according to claim 6 or 8 there is milling to scrape the downhole tool of logical function, it is characterised in that lower contact lower end with scrape
Wall device upper end, which is threadably secured, to be installed together；Wall scraper lower end is threadably secured with drifting device upper end and is installed together；
Top connection lower outside is threadably secured with upper outer sleeve upper inner and is installed together；Upper outer sleeve inside middle portion passes through spiral shell
Line is fixedly installed with lock ring；It is threadably secured and is installed together on the outside of cone segments lower end inside and sliding set upper side；Upper housing
Cylinder lower outside is threadably secured with lower outer sleeve to be installed together.
10. according to claim 9 there is milling to scrape the downhole tool of logical function, it is characterised in that top connection lower outside with
Upper outer sleeve upper inner is screwed by twin-stage to be installed together；Upper outer sleeve inside middle portion is pacified by the way that buttless thread is fixed
Equipped with lock ring；Upper outer sleeve lower outside is screwed by twin-stage with lower outer sleeve and is installed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320415.XA CN109915075B (en) | 2019-04-19 | 2019-04-19 | Downhole tool with milling and scraping functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910320415.XA CN109915075B (en) | 2019-04-19 | 2019-04-19 | Downhole tool with milling and scraping functions |
Publications (2)
| Publication Number | Publication Date |
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| CN109915075A true CN109915075A (en) | 2019-06-21 |
| CN109915075B CN109915075B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910320415.XA Active CN109915075B (en) | 2019-04-19 | 2019-04-19 | Downhole tool with milling and scraping functions |
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| Country | Link |
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Cited By (1)
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| CN111894522A (en) * | 2020-07-28 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Damping hydraulic power type switchable rotary scraping sleeve milling tool |
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| Publication number | Publication date |
|---|---|
| CN109915075B (en) | 2021-04-13 |
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Inventor after: Zhu Jinfu Inventor after: Wang Qunqi Inventor after: Yang Zhenwei Inventor after: Zhang Cheng Inventor after: Yu Shijie Inventor after: Xiong Mingying Inventor before: Zhu Jinfu Inventor before: Wang Qunqi Inventor before: Yang Zhenwu Inventor before: Zhang Cheng Inventor before: Yu Shijie Inventor before: Xiong Mingying |
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