CN206129240U - Multi -functional wall instrument of scraping of hydraulic pressure - Google Patents
Multi -functional wall instrument of scraping of hydraulic pressure Download PDFInfo
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- CN206129240U CN206129240U CN201621183989.5U CN201621183989U CN206129240U CN 206129240 U CN206129240 U CN 206129240U CN 201621183989 U CN201621183989 U CN 201621183989U CN 206129240 U CN206129240 U CN 206129240U
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Abstract
The utility model relates to a cover inside pipe wall fettler utensil technical field is a multi -functional wall instrument of scraping of hydraulic pressure, and it includes the body, scrapes the block group, stop gear, piston and piston bush, and interval distribution has two sets of block groups of scraping about the outside of body middle part, and every piston groove endotheca is equipped with the piston, and the top land is in the same place through fastening bolt fixed mounting with the scraping piece that corresponds the position, the piston bush is in the same place through shearing pin nail fixed mounting with the piston, about the piston scraping piece of both sides inboard with the body outside between be equipped with the tensioning spring, be equipped with on the body and prevent to scrape a stop gear who drops. The utility model has the advantages of reasonable and compact structure, convenient to use, it is through at the body with scrape and to set up hydraulic means such as piston, piston bush between the piece, can bore stopper and wait the operation to accomplish the back, realizes scraping the open effect of piece through pressor mode, and a drilling tool combination is gone into the well and to be accomplished multinomial flow chart, the improvement operating efficiency, the reduction operating cost has safe, laborsaving, simple and convenient, efficient characteristics.
Description
Technical field
This utility model is related to internal surface of sleeve pipe cleaning tool technical field, is that a kind of multifunctional hydraulic scrapes wall instrument.
Background technology
In current oil field production operation, wall operation is scraped for subsequent technique development and provide effectively guarantee, be oil field life
Produce the necessary links in construction.However, traditional mechanical wall scraper is only single to scrape wall function, wing has been just before going into the well
In open configuration, its cannot with the instrument such as brill, milling, mill, drifting lower well operations simultaneously, it is, therefore, necessary in brill, milling, mill, drifting
BHA is completed out Deng workover treatment, then have been replaced with gone into the well again after sleeve pipe wall scraper and is carried out scraping wall operation, it is impossible to realized one
Plow BHA to go into the well while completing the multinomial purpose for making operation, working performance is low, high cost.
In advance barefoot completion is that lower protective casing cementing well is treated on cement mortar after drill bit is drilled into oil reservoir top circle nearby
After returning to predetermined design height, then from protective casing under enter the less drill bit of diameter, drill cement plug, brill opens oil reservoir to setting
Meter well depth completion.If traditional mechanical wall built-up device is connected in BHA, when Open-Hole Section cement plug is bored, the risk of bit freezing is special
It is not high, the cost of deep-well and ultra-deep wells operation will certainly be increased, reduce production efficiency.Based on the problems referred to above, in order to improve
Production efficiency, cost-effective, it is necessary to be optimized improvement to traditional mechanical wall scraper, making every effort to that BHA goes into the well can be complete
Into multi-mode operation operation.
Therefore, the wall scraper of existing oil field production and application has the following disadvantages in actual use：Wing is all the time
In open configuration, it is impossible to and other implement operations, poor stability high in Open-Hole Section drillng operation bit freezing risk.
The content of the invention
This utility model scrapes wall instrument there is provided a kind of multifunctional hydraulic, overcomes the deficiency of above-mentioned prior art, its energy
The wall scraper of the existing oil field production and application of effectively solving has the following disadvantages in actual use：Wing is in all the time to be opened
Open state, it is impossible to and other implement operations, the problem of poor stability high in Open-Hole Section drillng operation bit freezing risk.
The technical solution of the utility model is realized by following measures：A kind of multifunctional hydraulic scrapes wall instrument, bag
Body, scraping block group, position-limit mechanism, piston and piston bush are included, body inner side is provided with the passage that builds the pressure of up/down perforation, and body middle part is outer
Side is intervally distributed with up and down two groups of scraping block groups, every group of scraping block group include at least three on body circumferential scraping block,
The first mounting groove is equipped with the body for corresponding to each scraping block position, often in being dislocatedly distributed per neighbouring scraping block
The inner side end of individual scraping block is respectively positioned on corresponding the first mounting groove inner side, and each scraping block middle part is equipped with piston groove,
Piston is set with each piston groove, top land is fixedly installed togather with the scraping block of correspondence position by fastening bolt；
The body of correspondence piston position is provided with piston hole, and the piston bush being sleeved on the outside of piston is installed with piston hole, and
Piston bush is fixedly installed togather with piston by the first shear pin；The scraping block inner side of the upper and lower both sides of piston and outer body
Between be provided with tensioning spring, the first outer positive stop lug boss is respectively and fixedly provided with the inner top side face of each scraping block, each scraping block
The second outer positive stop lug boss, the sheet on the outside of the first outer positive stop lug boss of correspondence and the second outer positive stop lug boss are respectively and fixedly provided with inside lower end face
Body is provided with the position-limit mechanism that can prevent scraping block from coming off from the first mounting groove.
The further optimization and/or improvements to above-mentioned utility model technical scheme are presented herein below：
Above-mentioned position-limit mechanism may include the 3rd outer positive stop lug boss, positive stop and fixed stop, the second outer limit convex of correspondence
The body of the first mounting groove aperture position on the outside of platform is provided with the 3rd outer positive stop lug boss, directly over the outer positive stop lug boss of correspondence the 3rd
Body be provided with the groove that is vertically directed of the frustum in outer narrow inner width, and be vertically directed groove lower end with the first mounting groove phase
It is logical, it is vertically directed in groove and is provided with positive stop, the lower end of positive stop is located at the first outer positive stop lug boss outside, positive stop top
Body be provided with the second mounting groove, fixed stop is provided with the second mounting groove, the lower end of fixed stop is pushed against positive stop
On, positive stop and fixed stop are fixedly mounted on respectively the outer body of correspondence position by fastening bolt, and the 3rd is outer spacing
First level distance and the second water between the first outer positive stop lug boss and positive stop between boss and the second outer positive stop lug boss
Put down apart from equal.
Sealing ring can be provided between the piston and piston bush of the upper and lower both sides of the shear pin of above-mentioned correspondence first.
Above-mentioned body lower end can be provided with the seat that builds the pressure that can be built the pressure to the passage that builds the pressure, and the seat that builds the pressure includes joint and shearing
Seat, Cut Block is fixedly mounted on joint inner side, the second shearing by shearing force more than the second shear pin of the first shear pin
Cut Block inner side below pin is provided with pressure release annular groove, is fixed with floor projection on the Cut Block in the middle part of correspondence pressure release annular groove and is letting out
The 4th outer limited ring dais on pressure ring groove lower surface, the Cut Block of correspondence pressure release ring groove position is provided with relief hole.
Above-mentioned upper end of joint can be threaded connection with body lower end and be fixedly installed togather.
Above-mentioned body lower end can be installed with drilling rod, and drilling rod lower end is installed with drill collar, on drill collar lower end and joint
End is fixedly installed togather.
Sealing ring can be provided between joint and Cut Block above above-mentioned second shear pin.
This utility model reasonable and compact in structure, easy to use, it between body and scraping block by arranging piston, work
The hydraulic means such as plug sleeve, can bore plug etc. after the completion of operation, realize the effect that scraping block subsequently opens by way of pressurization, one time
BHA is gone into the well can complete multi-mode operation operation, improve working performance, reduce operating cost, with it is safe, laborsaving, easy,
Efficiently the characteristics of.
Description of the drawings
Accompanying drawing 1 is the main view half section structural representation of this utility model most preferred embodiment.
Accompanying drawing 2 is the main view half section structural representation of this utility model most preferred embodiment use state.
Accompanying drawing 3 is the partial enlargement structural representation in accompanying drawing 1 at A.
Accompanying drawing 4 is the main view half section structural representation of seat of building the pressure in this utility model most preferred embodiment.
Coding in accompanying drawing is respectively：1 is body, and 2 is piston, and 3 is piston bush, and 4 are the passage that builds the pressure, and 5 is scraping block, 6
For fastening bolt, 7 is tensioning spring, and 8 is the first outer positive stop lug boss, and 9 is the second outer positive stop lug boss, and 10 is the ball that builds the pressure, and 11 is the
Three outer positive stop lug boss, 12 is positive stop, and 13 is fixed stop, and 14 is the first shear pin, and 15 is sealing ring, and 16 is joint,
17 is Cut Block, and 18 is the second shear pin, and 19 is pressure release annular groove, and 20 is the 4th outer limited ring dais, and 21 is relief hole.
Specific embodiment
This utility model is not limited by following embodiments, can according to the technical solution of the utility model and practical situation come
Determine specific embodiment.
In this utility model, for the ease of description, the description of the relative position relation of each part is according to description
The Butut mode of accompanying drawing 1 being described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description 1
Butut direction determining.
This utility model is further described with reference to embodiment and accompanying drawing：
As shown in accompanying drawing 1,2,3,4, the multifunctional hydraulic scrapes wall instrument including body 1, scraping block group, position-limit mechanism, piston 2
With piston bush 3, the inner side of body 1 is provided with the passage 4 that builds the pressure of up/down perforation, is intervally distributed with two groups up and down on the outside of the middle part of body 1 and scrapes
Block group, every group of scraping block group include at least three on body 1 circumferential scraping block 5, it is equal per neighbouring scraping block 5
In being dislocatedly distributed, the first mounting groove is equipped with the body 1 for corresponding to each position of scraping block 5, the inner side end of each scraping block 5
Corresponding the first mounting groove inner side is respectively positioned on, each middle part of scraping block 5 is equipped with piston groove, is set with each piston groove
Piston 2, the top of piston 2 is fixedly installed togather with the scraping block 5 of correspondence position by fastening bolt 6；Correspondence piston 2 position
Body 1 is provided with piston hole, and the piston bush 3 for being sleeved on the outside of piston 2, and piston bush 3 and work are installed with piston hole
Plug 2 is fixedly installed togather by the first shear pin 14；Between the inner side of scraping block 5 and the outside of body 1 of piston both sides about 2
Tensioning spring 7 is provided with, the first outer positive stop lug boss 8 is respectively and fixedly provided with the inner top side face of each scraping block 5, each scraping block 5
The second outer positive stop lug boss 9, the first outer positive stop lug boss 8 of correspondence and the outside of the second outer positive stop lug boss 9 are respectively and fixedly provided with inside lower end face
Body 1 be provided with the position-limit mechanism that can prevent scraping block 5 from coming off from the first mounting groove.
Known threaded connection can be adopted between piston bush 3 and body 1.When in use, it is first to pacify below this utility model
Dress endoporus suppresses sliding sleeve with the passage 4 that builds the pressure is communicated, and then the two is connected in the BHA that front end is drill bit, and spudding in is carried out
Plug operation is bored, after boring the plug end of job, the ball 10 that builds the pressure is put into, after the ball 10 that builds the pressure enters to suppress in sliding sleeve via 4, the passage that builds the pressure,
High-pressure fluid is injected from upper direction BHA, the passage 4 that builds the pressure of the top of ball 10 that is now placed in building the pressure starts to build the pressure, with pressure
The gradually increase of power, the first shear pin 14 is cut off, and piston 2 is displaced outwardly in the presence of high-pressure fluid；Due to being tensioned bullet
Spring 7 is in when mounted compressive state, and with cutting off for the first shear pin 14, tensioning spring 7 is flexed outward, and piston 2 one
Promote scraping block 5 along the outside side shifting of the first mounting groove, after the outside of scraping block 5 pushes against with position-limit mechanism, stopping is outer to move, but
Because tensioning spring 7 keeps promotion state, scraping block 5 to be in open configuration all the time, then move up and down BHA, band to it
Dynamic this utility model carries out scraping wall operation to sleeve pipe.It between body 1 and scraping block 5 by arranging piston 2, piston bush 3 etc.
Hydraulic means, can realize the effect that scraping block 5 subsequently opens, a brill after the completion of the operations such as plug are bored by way of pressurization
Tool combination is gone into the well and can complete multi-mode operation operation, improves working performance, reduces production cost.
Wall instrument can be scraped to above-mentioned multifunctional hydraulic and is made further optimization and/or improvements according to actual needs：
As shown in accompanying drawing 1,2,3,4, position-limit mechanism includes the 3rd outer positive stop lug boss 11, positive stop 12 and fixed stop
13, the body 1 of the first mounting groove aperture position in the outside of the second outer positive stop lug boss of correspondence 9 is provided with the 3rd outer positive stop lug boss 11,
Body 1 directly over the 3rd outer positive stop lug boss of correspondence 11 is provided with the groove that is vertically directed of the frustum in outer narrow inner width, and erects
Straight gathering sill lower end communicates with the first mounting groove, is vertically directed in groove and is provided with positive stop 12, and the lower end of positive stop 12 is located at
The outside of first outer positive stop lug boss 8, the body 1 of the top of positive stop 12 is provided with the second mounting groove, is provided with solid in the second mounting groove
Determine block 13, the lower end of fixed stop 13 is pushed against on positive stop 12, positive stop 12 and fixed stop 13 are respectively by tight
Fixing bolt 6 is fixedly mounted on the outside of body 1 of correspondence position, between the 3rd outer positive stop lug boss 11 and the second outer positive stop lug boss 9
First level distance is equal with the second horizontal range between the first outer positive stop lug boss 8 and positive stop 12.
As shown in accompanying drawing 1,2,3,4, installation process of the present utility model is first scraping block 5 to be inserted in first mounting groove,
Then positive stop 12 is installed into groove location slide downward from second, enters and be vertically directed in groove and make under positive stop 12
End is located at the outside of the second outer positive stop lug boss 9, fixed stop 13 is then loaded in the second mounting groove so as to on positive stop 12
End forms spacing, respectively fixed stop 13 and positive stop 12 is fixedly mounted on into one with body 1 finally by fastening bolt 6
Rise；When scraping block 5 is when open configuration is in the presence of piston 2 and tensioning spring 7, with limit on the outside of the first outer positive stop lug boss 8
The inner side of position block 12 offsets, the outside of the second outer positive stop lug boss 9 offsets with the inner side of three outer positive stop lug boss 11, and position-limit mechanism is played
The position-limiting action for preventing scraping block 5 from departing from from the first mounting groove, it is ensured that stability of the present utility model；First level distance
It is equal with the second horizontal range ensure cutting blocks be in open configuration when can keep vertical, prevent the generation of lock of tool drilling.
As shown in accompanying drawing 1,2,3,4, it is provided between the piston 2 and piston bush 3 of first shear pin both sides about 14 of correspondence
Sealing ring 15.Sealing ring 15 is set between piston 2 and piston bush 3, sealing can be formed, be easy to being smoothed out for the process of building the pressure.
As shown in accompanying drawing 1,2,3,4, the lower end of body 1 is provided with the seat that builds the pressure that can be built the pressure to the passage 4 that builds the pressure, and build the pressure seat bag
Joint 16 and Cut Block 17 are included, Cut Block 17 fixes peace by shearing force more than second shear pin 18 of the first shear pin 14
The inner side of joint 16 is mounted in, the inner side of Cut Block 17 of the lower section of the second shear pin 18 is provided with pressure release annular groove 19, correspondence pressure release annular groove 19
Fourth outer limited ring dais 20 of the floor projection on the lower surface of pressure release annular groove 19, correspondence pressure release are fixed with the Cut Block 17 at middle part
The Cut Block 17 of the position of annular groove 19 is provided with relief hole 21.When using, the seat that builds the pressure is fixedly mounted on the lower section of body 1, and pitching builds the pressure
Afterwards scraping block 5 opens, and continues to injection high-pressure fluid in body 1, and the second shear pin 18 is cut off, and Cut Block 17 is descending, when the
After four outer limited ring dais 20 are on gas pressure relief slot lower surface, the fluid in the BHA of top passes sequentially through gas pressure relief slot and relief hole
21 carry out pressure release so that the upper and lower fluid connection of the seat that builds the pressure, and are convenient for other operations.
As shown in accompanying drawing 1,2,3,4, the upper end of joint 16 is threaded connection with the lower end of body 1 and is fixedly installed togather.This
Utility model when in use, BHA be from top to bottom sequentially connected by drilling rod, drill collar, wall scraper, Cut Block 17 and drill bit and
Into this kind of combination can make scraping block 5 close to drill bit, fully drill bit above tubing string is carried out and scrapes wall operation, leave
Cement section is less.
As shown in accompanying drawing 1,2,3,4, the lower end of body 1 is installed with drilling rod, and drilling rod lower end is installed with drill collar, drill collar
Lower end is fixedly installed togather with the upper end of joint 16.When carrying out scraping wall operation to Open-Hole Section drilling well, easily there is lock of tool drilling, when
After lock of tool drilling occurs, the drilling tool blocked portion position of demolition bomb to Open-Hole Section need to be transferred from BHA, carry out blast and become less severe work
Industry, this utility model will build the pressure seat installed in drill collar and drilling rod lower end, and it will not hinder the descending of demolition bomb, it is ensured that explosion resilience energy
Get at Dacca and bore position, the carrying out of operation of becoming less severe beneficial to explosion.
As shown in accompanying drawing 1,2,3,4, between the joint 16 and Cut Block 17 of the top of the second shear pin 18 sealing ring is provided with
15.Arranging sealing ring 15 between the joint 16 and Cut Block 17 of the top of the second shear pin 18 can form sealing, be easy to build the pressure
Process is smoothed out.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal enforcement
Effect, can according to actual needs increase and decrease non-essential technical characteristic to meet the demand of different situations.
Claims (10)
1. a kind of multifunctional hydraulic scrapes wall instrument, it is characterised in that including body, scraping block group, position-limit mechanism, piston and piston bush,
Body inner side is provided with the passage that builds the pressure of up/down perforation, and body middle part outside is intervally distributed with up and down two groups of scraping block groups, every group of scraping block
Group include at least three on body circumferential scraping block, per neighbouring scraping block in being dislocatedly distributed, correspondingly
The first mounting groove is equipped with the body of each scraping block position, the inner side end of each scraping block is respectively positioned on corresponding
One mounting groove inner side, each scraping block middle part is equipped with piston groove, is set with piston in each piston groove, top land with it is corresponding
The scraping block of position is fixedly installed togather by fastening bolt；The body of correspondence piston position is provided with piston hole, piston hole
The piston bush being sleeved on the outside of piston is inside installed with, and piston bush is fixedly mounted on piston by the first shear pin
Together；Tensioning spring is provided between the scraping block inner side of the upper and lower both sides of piston and outer body, the inner top side of each scraping block
The first outer positive stop lug boss is respectively and fixedly provided with face, the second outer positive stop lug boss is respectively and fixedly provided with the inside lower end face of each scraping block, it is right
Answering the first outer positive stop lug boss and the body on the outside of the second outer positive stop lug boss to be provided with can prevent scraping block from taking off from the first mounting groove
The position-limit mechanism for falling.
2. multifunctional hydraulic according to claim 1 scrapes wall instrument, it is characterised in that position-limit mechanism includes that the 3rd is outer spacing
Boss, positive stop and fixed stop, set on the body of the first mounting groove aperture position on the outside of the second outer positive stop lug boss of correspondence
There is the 3rd outer positive stop lug boss, the body directly over the 3rd outer positive stop lug boss of correspondence is provided with the vertical of the frustum in outer narrow inner width
Gathering sill, and be vertically directed groove lower end and communicate with the first mounting groove, it is vertically directed in groove and is provided with positive stop, positive stop
Lower end is located at the first outer positive stop lug boss outside, and the body above positive stop is provided with the second mounting groove, sets in the second mounting groove
The lower end for having fixed stop, fixed stop is pushed against on positive stop, and positive stop and fixed stop pass through respectively fastening bolt
It is fixedly mounted on the outer body of correspondence position, the first level distance between the 3rd outer positive stop lug boss and the second outer positive stop lug boss
It is equal with the second horizontal range between the first outer positive stop lug boss and positive stop.
3. multifunctional hydraulic according to claim 1 and 2 scrapes wall instrument, it is characterised in that the first shear pin of correspondence is upper and lower
Sealing ring is provided between the piston and piston bush of both sides.
4. multifunctional hydraulic according to claim 1 and 2 scrapes wall instrument, it is characterised in that body lower end is provided with can be to building the pressure
What passage was built the pressure build the pressure seat, the seat that builds the pressure includes joint and Cut Block, and Cut Block is more than the first shear pin by shearing force
The second shear pin be fixedly mounted on joint inner side, be provided with sealing between the joint and Cut Block above the second shear pin
Circle, the Cut Block inner side below the second shear pin is provided with pressure release annular groove, is fixed with the Cut Block in the middle part of correspondence pressure release annular groove
Fourth outer limited ring dais of the floor projection on pressure release annular groove lower surface, the Cut Block of correspondence pressure release ring groove position is provided with pressure release
Hole.
5. multifunctional hydraulic according to claim 3 scrapes wall instrument, it is characterised in that body lower end is provided with can be logical to building the pressure
What road was built the pressure build the pressure seat, the seat that builds the pressure includes joint and Cut Block, and Cut Block is by shearing force more than the first shear pin
Second shear pin is fixedly mounted on joint inner side, and the Cut Block inner side below the second shear pin is provided with pressure release annular groove, correspondence
Fourth outer limited ring dais of the floor projection on pressure release annular groove lower surface are fixed with Cut Block in the middle part of pressure release annular groove, correspondence is let out
The Cut Block of pressure ring groove location is provided with relief hole.
6. multifunctional hydraulic according to claim 4 scrapes wall instrument, it is characterised in that body lower end is installed with drilling rod,
Drilling rod lower end is installed with drill collar, and drill collar lower end is fixedly installed togather with upper end of joint.
7. multifunctional hydraulic according to claim 5 scrapes wall instrument, it is characterised in that body lower end is installed with drilling rod,
Drilling rod lower end is installed with drill collar, and drill collar lower end is fixedly installed togather with upper end of joint.
8. multifunctional hydraulic according to claim 4 scrapes wall instrument, it is characterised in that body lower end is installed with drilling rod,
Drilling rod lower end is installed with drill collar, and drill collar lower end is fixedly installed togather with upper end of joint.
9. multifunctional hydraulic according to claim 5 scrapes wall instrument, it is characterised in that body lower end is installed with drilling rod,
Drilling rod lower end is installed with drill collar, and drill collar lower end is fixedly installed togather with upper end of joint.
10. the multifunctional hydraulic according to claim 5 or 6 or 7 or 8 or 9 scrapes wall instrument, it is characterised in that upper end of joint with
Body lower end is threaded connection and is fixedly installed togather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621183989.5U CN206129240U (en) | 2016-10-27 | 2016-10-27 | Multi -functional wall instrument of scraping of hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621183989.5U CN206129240U (en) | 2016-10-27 | 2016-10-27 | Multi -functional wall instrument of scraping of hydraulic pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129240U true CN206129240U (en) | 2017-04-26 |
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ID=58576860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621183989.5U Active CN206129240U (en) | 2016-10-27 | 2016-10-27 | Multi -functional wall instrument of scraping of hydraulic pressure |
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| CN (1) | CN206129240U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558953A (en) * | 2017-10-27 | 2018-01-09 | 东北石油大学 | Integral type pitching is segmented wall scraper |
| CN109915075A (en) * | 2019-04-19 | 2019-06-21 | 新疆华油油气工程有限公司 | The downhole tool of logical function is scraped with milling |
| CN110939406A (en) * | 2019-12-11 | 2020-03-31 | 库尔勒施得石油技术服务有限公司 | Hydraulic wall scraper |
| CN111561268A (en) * | 2020-06-23 | 2020-08-21 | 北京中天必捷能源技术有限责任公司 | Anti-sticking modularization drill bit |
| CN113047812A (en) * | 2021-04-21 | 2021-06-29 | 濮阳市元亨利通石油机械有限公司 | Spring type casing scraper |
| CN114737920A (en) * | 2021-01-07 | 2022-07-12 | 中国石油天然气股份有限公司 | Drifting and scraping composite tool |
-
2016
- 2016-10-27 CN CN201621183989.5U patent/CN206129240U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558953A (en) * | 2017-10-27 | 2018-01-09 | 东北石油大学 | Integral type pitching is segmented wall scraper |
| CN107558953B (en) * | 2017-10-27 | 2019-10-29 | 东北石油大学 | Integral type pitching is segmented wall scraper |
| CN109915075A (en) * | 2019-04-19 | 2019-06-21 | 新疆华油油气工程有限公司 | The downhole tool of logical function is scraped with milling |
| CN109915075B (en) * | 2019-04-19 | 2021-04-13 | 新疆华油油气工程有限公司 | Downhole tool with milling and scraping functions |
| CN110939406A (en) * | 2019-12-11 | 2020-03-31 | 库尔勒施得石油技术服务有限公司 | Hydraulic wall scraper |
| CN111561268A (en) * | 2020-06-23 | 2020-08-21 | 北京中天必捷能源技术有限责任公司 | Anti-sticking modularization drill bit |
| CN114737920A (en) * | 2021-01-07 | 2022-07-12 | 中国石油天然气股份有限公司 | Drifting and scraping composite tool |
| CN113047812A (en) * | 2021-04-21 | 2021-06-29 | 濮阳市元亨利通石油机械有限公司 | Spring type casing scraper |
| CN113047812B (en) * | 2021-04-21 | 2022-11-25 | 濮阳市元亨利通石油机械有限公司 | Spring type casing scraper |
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