CN208966279U - A kind of down-hole casing scrapes tool - Google Patents
A kind of down-hole casing scrapes tool Download PDFInfo
- Publication number
- CN208966279U CN208966279U CN201821800330.9U CN201821800330U CN208966279U CN 208966279 U CN208966279 U CN 208966279U CN 201821800330 U CN201821800330 U CN 201821800330U CN 208966279 U CN208966279 U CN 208966279U
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- hole
- outer housing
- seat
- plunger
- main shaft
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Abstract
The utility model relates to a kind of down-hole casings to scrape tool, belong to oil/gas well downhole tool field.It is made of outer housing, top connection, turbine wheel shaft, main shaft, plunger pump, cylindrical cam and cleaning assembly, turbine wheel shaft is equipped with by turbine bearing and turbine assembly in outer housing below top connection, main shaft is equipped with by bearing in outer housing below turbine wheel shaft, one end of main shaft extends to below the other end of outer housing, it extends on the main shaft below the other end of outer housing and is fixed with cleaning assembly, cleaning assembly is slidably and sealingly connected with outer housing.The down-hole casing scrapes the mechanical scraping action and the percussion of high-pressure water jet that tool combines scraper plate, the sundries and attachment of internal surface of sleeve pipe are cleaned, it is suitable for the cleaning of multiple diameter casing, drilling fluid pushes the stretching of scraper plate that can automatically adjust the distance of scraper plate stretching simultaneously, avoids mechanical structure stretching scraper plate and is easy stuck disadvantage.
Description
Technical field
The utility model relates to a kind of down-hole casings to scrape tool, belong to oil/gas well downhole tool field.
Background technique
The sundries such as the silt that internal surface of sleeve pipe deposits during oil/gas drilling can be impacted to boring under trip-out, influence underground
Operation safety.And in oil recovery process, oil well casing is easy wax deposition fouling, influences the efficiency and production safety of oil gas harvesting.
Therefore, a kind of down-hole casing cleaning means of highly effective and safe is developed for improving oil/gas drilling and harvesting production efficiency and life
It is significant to produce safety.
Summary of the invention
The purpose of this utility model is that: provide it is a kind of can be effectively to the silt and tube wall deposited in oil gas casing
On fouling cleaned, scrape tool to improve the down-hole casing of operational security and oil gas harvest efficiency.
The technical solution of the utility model is:
A kind of down-hole casing scrapes tool, it by outer housing, top connection, turbine wheel shaft, main shaft, plunger pump, cylindrical cam and
Cleaning assembly is constituted, it is characterised in that: the threaded one end of outer housing is equipped with top connection, passes through in the outer housing below top connection
Turbine bearing and turbine assembly are equipped with turbine wheel shaft, pass through bearing in the outer housing below turbine wheel shaft and main shaft, main shaft and turbine are housed
Axle thread is fixedly connected；One end of main shaft extends to below the other end of outer housing, is provided with circle in the outer housing below bearing
Column cam is connected between cylindrical cam and outer housing using spline, is fixed on the main shaft below cylindrical cam by mounting ring
Plunger pump；Plunger pump is connect with cylindrical cam sliding contact, is extended on the main shaft below the other end of outer housing and is fixed with clearly
Component is washed, cleaning assembly is slidably and sealingly connected with outer housing.
The outer housing is made of upper housing and lower case, is mutually threadedly coupled between upper housing and lower case.It is described
The corresponding main shaft of plunger pump on be provided with the liquid stream road of T-type.
The plunger pump is made of the pump housing, valve plate, cover board and plunger, and the pump housing is cylindrical, the centre of the pump housing
It is provided with pilot hole, multiple plunger holes are evenly equipped on the pump housing of pilot hole periphery, plunger hole is interior to be equipped with plunger by spring, pumps
The bottom of body is fixed with valve plate and cover board by fixing bolt.
The valve plate and cover board difference are in the form of annular discs, and the centre of valve plate and cover board is provided with pilot hole, dress
Shape corresponding with plunger hole is provided with axial intercommunicating pore and radial pilot hole on the valve plate of distribution two sides；Radial pilot hole passes through axis
It is connected to intercommunicating pore with plunger hole, interruption-like in radial pilot hole to be equipped with outer check valve and internal check valve, plunger hole passes through
Axial intercommunicating pore and radial pilot hole be connected tos with outer check valve, plunger hole pass through axial intercommunicating pore, radial direction pilot hole and it is interior unidirectionally
Valve is connected to liquid stream road.
The cleaning assembly is made of upper scraping plate seat, top nozzle seat, lower scraping plate seat and lower nozzle carrier, upper scraping plate seat, on
Nozzle carrier, lower scraping plate seat and lower nozzle carrier are successively from top to bottom mutually threadedly coupled, and cleaning assembly passes through upper scraping plate seat and main shaft
Be fixedly connected, be provided with roller bearing between the upper scraping plate seat and outer housing of cleaning assembly, cleaning assembly by upper scraping plate seat with
Outer housing is slidably connected.
The upper scraping plate seat and lower scraping plate seat is respectively cylindric, the centre difference of upper scraping plate seat and lower scraping plate seat
It is provided with liquid stream through-hole, the assembling groove of multiple T-types is evenly equipped on the upper scraping plate seat and lower scraping plate seat of liquid stream through-hole periphery, is assembled
Groove is connected to liquid stream through-hole, is separately installed in assembling groove and is scraped part.
The part that scrapes is made of scraper plate piston, closure plate, support spring and scraper plate, by solid at the port of assembling groove
Tight screw is fixed with closure plate, is movably installed with the scraper plate piston of T-type, one end of scraper plate piston in assembling groove by support spring
Closure plate outer end is extended to across closure plate, the scraper plate piston end for extending to closure plate outer end is equipped with scraper plate by clamp-screw.
Relief hole, the upper scraping plate of relief hole lower end are evenly equipped with around liquid stream through-hole above the assembling groove of the upper scraping plate seat
Shape radial equipartition corresponding with relief hole has pressure releasing hole on seat, and pressure releasing hole is connected to relief hole, and pressure releasing hole is provided with pressure-limiting check valve.
The top nozzle seat and lower nozzle carrier are respectively cylinder, the centre difference of top nozzle seat and lower nozzle carrier
It is provided with liquid stream through-hole, installation groove is evenly equipped on the circumference of top nozzle seat and lower nozzle carrier, installation groove and liquid stream through-hole connect
It is logical；Installation groove is provided with pressure-limiting check valve, and the installation groove on the outside of pressure-limiting check valve is provided with nozzle.
The liquid stream through-hole lower port of the lower nozzle carrier is provided with axial pressure-limiting check valve, axial pressure-limiting check valve lower section
Liquid stream through-hole lower port be provided with axial nozzle.
The pressure-limiting check valve and axial pressure-limiting check valve are made of valve seat, blanking cover and stifled ball respectively, one end of valve seat
It is provided with inlet, the other end screw thread of valve seat is equipped with blanking cover, and liquid outlet is evenly equipped on the circumference of blanking cover, passes through branch in valve seat
Support spring is equipped with stifled ball, blocks up ball and inlet connection in sealing contact.
The utility model has the beneficial effects that:
The utility model combines the mechanical scraping action and the percussion of high-pressure water jet of scraper plate, to internal surface of sleeve pipe
Sundries and attachment are cleaned, and water jet also helps the sundries washed down and is discharged along annular space.Scraper plate is existed by scraper plate piston
It is stretched out under the promotion of fluid power, is close to casing wall, adapt to the casing of multiple diameter, while fluid power pushes the stretching of scraper plate that can adjust automatically
The distance that scraper plate stretches out is saved, mechanical structure stretching scraper plate is avoided and is easy stuck disadvantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is enlarged structure schematic diagram at the A in Fig. 1；
Fig. 3 is the structural schematic diagram of the cylindrical cam of the utility model；
Fig. 4 is the pump body structure schematic diagram of the plunger pump of the utility model；
Fig. 5 is the structural schematic diagram of the valve plate of the utility model,
Fig. 6 is the structural schematic diagram of the check valve of the utility model.
In figure: 1, top connection, 2, turbine wheel shaft, 3, main shaft, 4, cylindrical cam, 5, upper housing, 6, lower case, 7, turbine wheel shaft
It holds, 8, turbine assembly, 9, bearing, 10, cam tooth, 11, mounting ring, 12, the pump housing, 13, valve plate, 14, cover board, 15, plunger,
16, pilot hole, 17, plunger hole, 18, spring, 19, axial intercommunicating pore, 20, radial pilot hole, 21, outer check valve, 22, interior unidirectional
Valve, 23, liquid stream road, 24, upper scraping plate seat, 25, top nozzle seat, 26, lower scraping plate seat, 27, lower nozzle carrier, 28, liquid stream through-hole, 29,
Assembling groove, 30, scraper plate piston, 31, closure plate, 32, support spring, 33, scraper plate, 34, relief hole, 35, pressure releasing hole, 36, pressure limiting
Check valve, 37, nozzle, 38, axial pressure-limiting check valve, 39, axial nozzle, 40, valve seat, 41, blanking cover, 42, stifled ball, 43, feed liquor
Mouthful, 44, liquid outlet, 45, fixed pin, 46, roller bearing.
Specific embodiment
The down-hole casing scrapes tool by outer housing, top connection 1, turbine wheel shaft 2, main shaft 3, plunger pump, cylindrical cam 4 and clear
Component composition is washed, outer housing is made of upper housing 5 and lower case 6, is mutually threadedly coupled between upper housing 5 and lower case 6.Shell
Body threaded one end is equipped with top connection 1, passes through turbine bearing 7 in the outer housing of 1 lower section of top connection and turbine assembly 8 is equipped with turbine
Axis 2, turbine assembly 8 include turbine rotor and stator.Main shaft 3, main shaft 3 are equipped with by bearing 9 in the outer housing of 2 lower section of turbine wheel shaft
One end is screwed with turbine wheel shaft 2 and connect.
The other end of main shaft 3 extends to below one end of outer housing, is provided with cylindrical cam in the outer housing of 9 lower section of bearing
4, it is connected between cylindrical cam 4 and outer housing using spline.Cylindrical cam 4 is cylindrical body, and the centre of cylindrical cam 4 is arranged
There is through-hole, for logical (wearing) mistake of drilling fluid in work and main shaft 3, the lower surface of cylindrical cam 4 is provided circumferentially about continuous wave
The cam tooth 10 of wave-like.
Plunger pump is fixed with by mounting ring 11 on the main shaft 3 of 4 lower section of cylindrical cam.Plunger pump is by the pump housing 12, valve plate
13, cover board 14 and plunger 15 are constituted, and the pump housing 12 is cylindrical, and the centre of the pump housing 12 is provided with pilot hole 16, are used for and master
Axis 3 is connected and fixed.It is evenly equipped with multiple plunger holes 17 on the pump housing of 16 periphery of pilot hole, is installed in plunger hole 17 by spring 18
There is plunger 15, the bottom of the pump housing 12 is fixed with valve plate 13 and cover board 14 by fixing bolt, is arranged on the corresponding main shaft 3 of plunger pump
There is the liquid stream road 23 of T-type.
Valve plate 13 and cover board 14 are distinguished in the form of annular discs, and the centre of valve plate 13 and cover board 14 is provided with pilot hole
16, shape corresponding with plunger hole 17 is provided with axial intercommunicating pore 19 and radial pilot hole 20 on the valve plate 13 of 16 two sides of pilot hole；
Radial pilot hole 20 passes through axial intercommunicating pore 19 and is connected to plunger hole 17, in radial pilot hole 20 it is interruption-like be equipped with it is outer unidirectionally
Valve 21 and internal check valve 22, plunger hole 17 passes through axial intercommunicating pore 19 and radial pilot hole 20 is connected to outer check valve 21, plunger
Hole 17 passes through axial intercommunicating pore 19, radial pilot hole 20 and internal check valve 22 and is connected to liquid stream road 23, and plunger pump passes through plunger 15
It is connect with 10 sliding contact of cam tooth of cylindrical cam 4.In work, plunger pump is rotated with main shaft 3, in cam tooth 10 and spring 18
Under the action of, plunger 15 pumps in plunger hole 17, to be pressurized to drill-in fluid.
Cleaning assembly is fixed on the main shaft 3 extended to below the other end of outer housing.Cleaning assembly by upper scraping plate seat 24,
Top nozzle seat 25, lower scraping plate seat 26 and lower nozzle carrier 27 are constituted, upper scraping plate seat 24, top nozzle seat 25, lower scraping plate seat 26 and lower spray
Mouth seat 27 is successively from top to bottom mutually threadedly coupled.Upper scraping plate seat 24 and lower scraping plate seat 26 are respectively cylindric, upper scraping plate seat 24
Liquid stream through-hole 28, the upper scraping plate seat 24 and lower scraping plate of 28 periphery of liquid stream through-hole are respectively arranged with the centre of lower scraping plate seat 26
The assembling groove 29 of multiple T-types is evenly equipped on seat 26, assembling groove 29 is connected to liquid stream through-hole 28, and assembling groove 29, which is provided with, to be scraped
Wash part.
It scrapes part to be made of scraper plate piston 30, closure plate 31, support spring 32 and scraper plate 33, lead at the port of assembling groove 29
It crosses clamp-screw and is fixed with closure plate 31, be movably installed with the scraper plate piston 30 of T-type in assembling groove 29 by support spring 32, scrape
One end of plate piston 30 passes through closure plate 31 and extends to 31 outer end of closure plate, and 30 end of scraper plate piston for extending to 31 outer end of closure plate passes through
Clamp-screw is equipped with scraper plate 33.
The top of assembling groove 29 of upper scraping plate seat 24 is evenly equipped with relief hole 34 around liquid stream through-hole 28,34 lower end of relief hole it is upper
Scraping shape radial equipartition corresponding with relief hole 34 on panel seat 24 has pressure releasing hole 35, and pressure releasing hole 35 is connected to relief hole 34, pressure releasing hole 35
It is provided with pressure-limiting check valve 36.
Top nozzle seat 25 and lower nozzle carrier 27 are respectively cylinder, the centre point of top nozzle seat 25 and lower nozzle carrier 27
It is not provided with liquid stream through-hole 28, is evenly equipped with installation groove, installation groove and liquid on the circumference of top nozzle seat 28 and lower nozzle carrier 27
Recirculation hole connection；Installation groove is provided with pressure-limiting check valve 36, and the installation groove in 36 outside of pressure-limiting check valve is provided with nozzle 37.
28 lower port of liquid stream through-hole of lower nozzle carrier 27 is provided with axial pressure-limiting check valve 38, under axial pressure-limiting check valve 38
28 lower port of liquid stream through-hole of side is provided with axial nozzle 39.
Pressure-limiting check valve 36 and axial pressure-limiting check valve 38 are made of valve seat 40, blanking cover 41 and stifled ball 42 respectively, valve seat 40
One end be provided with inlet 43, the other end screw thread of valve seat 40 is equipped with blanking cover 41, is evenly equipped with out liquid on the circumference of blanking cover 41
Mouth 44, valve seat 40 is interior to be equipped with stifled ball 42 by support spring 32, blocks up ball 42 and the connection in sealing contact of inlet 43.
Cleaning assembly is slidably connected by the lower case of upper scraping plate seat and outer housing.
Roller bearing 46, the upper scraping plate seat 24 of cleaning assembly are provided between the upper scraping plate seat 24 and outer housing of cleaning assembly
Upper end it is provided circumferentially about have annular groove, fixed pin 45 is provided on outer housing corresponding with annular groove, upper scraping plate seat 24 passes through ring
The cooperation of slot and fixed pin 45 is slidably and sealingly connected with outer housing.
When the down-hole casing scrapes tool work, drilling fluid is entered by top connection 1 and impulse turbine component, to drive whirlpool
Wheel shaft 2 rotates, and then drives main shaft 3 and cleaning assembly rotation；During this, impulse turbine component is completed to drive turbine
The drilling fluid that axis 2 rotates through bearing 9, the through-hole of cylindrical cam 4, upper scraping plate seat 24 relief hole 34, and in plunger pump and shell
Collect in annular space between body, when the drilling fluid collected reaches a certain amount of and certain pressure, a part of drilling fluid opens row pressure
Pressure-limiting check valve 36 in hole 35 is discharged, and another part drilling fluid opens the radially loading that outer check valve 21 enters to valve plate 13 and matches
Hole 20；It is connected to since radial pilot hole 20 passes through axial intercommunicating pore 19 with plunger hole 17, and plunger hole 17 passes through axial intercommunicating pore
19, radial pilot hole 20 and internal check valve 22 are connected to liquid stream road 23, enter to the drilling fluid of radial pilot hole 20 in plunger pump
During cylindrical cam rotation, extruding is formed to it by plunger 15, to form pressurized drilling fluid and enter
Liquid stream road 23.That is, the cam tooth 10 of cylindrical cam 4, which forms plunger 15, to be connected during plunger pump is rotated relative to cylindrical cam
Continuous extruding, while pumping under the action of spring 18, to increase to the drilling fluid of radial pilot hole 20
Pressure, pressurized drilling fluid open internal check valve 22 and enter in liquid stream road 23.
Into the pressurized drilling fluid in liquid stream road 23 in the liquid stream through-hole 28 of upper scraping plate seat 24, initially enters and scrape
The assembling groove 29 of panel seat 24, and scraper plate piston 30 is pushed to extend radially out, from there through scraper plate 33 with the rotation of cleaning assembly
Scraping cleaning is carried out to the dirt on casing wall.
Complete to push the radially-protruding pressurization drilling well of scraper plate piston 30 of upper scraping plate seat 24 to continue along 28 downlink of liquid stream through-hole
And enter lower scraping plate seat 26 through top nozzle seat 25, and enter the assembling groove 29 of lower scraping plate seat 26, push scraper plate piston 30 radial
It stretches out, from there through scraper plate 33 as the rotation of cleaning assembly carries out scraping cleaning to the dirt on casing wall.During this,
After the pressurized drilling liquid pressure entered in cleaning assembly reaches certain value, drilling fluid opens top nozzle seat 25 and lower nozzle
Pressure-limiting check valve 36 on seat 27 is sprayed by nozzle 37, and as the rotation of cleaning assembly carries out jet stream to the dirt on casing wall
Cleaning preferably scrapes effect to reach.Meanwhile passing through the axial pressure-limiting check valve 38 and axial nozzle 39 on lower nozzle carrier 27
Deposit in pipe can be rinsed.
The down-hole casing scrapes the mechanical scraping action and the percussion of high-pressure water jet that tool combines scraper plate 33, right
The sundries and attachment of internal surface of sleeve pipe are cleaned, and water jet also helps the sundries washed down and is discharged along annular space.Scraper plate 33
It is stretched out under the promotion of drilling fluid by scraper plate piston 30, is close to casing wall, is suitable for the cleaning of multiple diameter casing, while drilling well
Liquid push scraper plate 33 stretchings can automatically adjust scraper plate 33 stretching distance, avoid mechanical structure stretching scraper plate be easy it is stuck
Disadvantage.
Claims (7)
1. a kind of down-hole casing scrapes tool, it is by outer housing, top connection (1), turbine wheel shaft (2), main shaft (3), plunger pump, cylinder
Cam (4) and cleaning assembly are constituted, it is characterised in that: the threaded one end of outer housing is equipped with top connection (1), under top connection (1)
Turbine wheel shaft (2) are housed by turbine bearing (7) and turbine assembly (8) in the outer housing of side, in the outer housing below turbine wheel shaft (2)
Main shaft (3) are housed by bearing (9), main shaft (3) is screwed with turbine wheel shaft (2) and connect；One end of main shaft (3) extends to shell
Below the other end of body, it is provided with cylindrical cam (4) in the outer housing below bearing (9), between cylindrical cam (4) and outer housing
It is connected using spline, is fixed with plunger pump by mounting ring (11) on the main shaft below cylindrical cam (4)；Plunger pump is convex with cylinder
(4) sliding contact connection is taken turns, extends on the main shaft below the other end of outer housing (3) and is fixed with cleaning assembly, cleaning assembly
It is slidably and sealingly connected with outer housing.
2. a kind of down-hole casing according to claim 1 scrapes tool, it is characterised in that: the outer housing is by upper housing
(5) it constitutes, is mutually threadedly coupled between upper housing (5) and lower case (6), the corresponding master of the plunger pump with lower case (6)
The liquid stream road (23) of T-type is provided on axis (3).
3. a kind of down-hole casing according to claim 1 scrapes tool, it is characterised in that: the plunger pump is by the pump housing
(12), valve plate (13), cover board (14) and plunger (15) are constituted, and the pump housing (12) is cylindrical, and the centre of the pump housing (12) is set
It is equipped with pilot hole (16), is evenly equipped with multiple plunger holes (17) on the pump housing (12) of pilot hole (16) periphery, led in plunger hole (17)
It crosses spring (18) to be equipped with plunger (15), the bottom of the pump housing (12) is fixed with valve plate (13) and cover board (14) by fixing bolt.
4. a kind of down-hole casing according to claim 3 scrapes tool, it is characterised in that: the valve plate (13) and lid
Plate (14) is in the form of annular discs respectively, and the centre of valve plate (13) and cover board (14) is provided with pilot hole (16), pilot hole (16)
Shape corresponding with plunger hole (17) is provided with axial intercommunicating pore (19) and radial pilot hole (20) on the valve plate (13) of two sides；It is radial
Pilot hole (20) passes through axial intercommunicating pore (19) and is connected to plunger hole (17), interruption-like in radial pilot hole (20) to be equipped with outside
Check valve (21) and internal check valve (22), plunger hole (17) pass through axial intercommunicating pore (19) and radial pilot hole (20) and it is outer unidirectionally
Valve (21) connection, plunger hole (17) pass through axial intercommunicating pore (19), radial pilot hole (20) and internal check valve (22) and liquid stream road
(23) it is connected to.
5. a kind of down-hole casing according to claim 1 scrapes tool, it is characterised in that: the cleaning assembly is scraped from above
Panel seat (24), top nozzle seat (25), lower scraping plate seat (26) and lower nozzle carrier (27) are constituted, upper scraping plate seat (24), top nozzle seat
(25), lower scraping plate seat (26) and lower nozzle carrier (27) are successively from top to bottom mutually threadedly coupled, and cleaning assembly passes through upper scraping plate seat
(24) it is fixedly connected with main shaft (3), is provided with roller bearing (46) between the upper scraping plate seat (24) and outer housing of cleaning assembly, clearly
It washes component and is slidably connected by upper scraping plate seat (24) with outer housing.
6. a kind of down-hole casing according to claim 5 scrapes tool, it is characterised in that: the upper scraping plate seat (24) and
Lower scraping plate seat (26) is respectively cylindric, and it is logical that the centre of upper scraping plate seat (24) and lower scraping plate seat (26) is respectively arranged with liquid stream
Hole (28) is evenly equipped with the assembling groove of multiple T-types on the upper scraping plate seat (24) and lower scraping plate seat (26) of liquid stream through-hole (28) periphery
(29), assembling groove (29) is connected to liquid stream through-hole (28), is separately installed in assembling groove (29) and is scraped part.
7. a kind of down-hole casing according to claim 6 scrapes tool, it is characterised in that: the part that scrapes is lived by scraper plate
(30), closure plate (31), support spring (32) and scraper plate (33) is filled in constitute, it is solid by clamp-screw at the port of assembling groove (29)
Equipped with closure plate (31), the scraper plate piston (30) of T-type is movably installed in assembling groove (29) by support spring (32), scraper plate is living
One end of plug (30) passes through closure plate (31) and extends to closure plate (31) outer end, extends to scraper plate piston (30) end of closure plate (31) outer end
Head is equipped with scraper plate (33) by clamp-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821800330.9U CN208966279U (en) | 2018-11-02 | 2018-11-02 | A kind of down-hole casing scrapes tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821800330.9U CN208966279U (en) | 2018-11-02 | 2018-11-02 | A kind of down-hole casing scrapes tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966279U true CN208966279U (en) | 2019-06-11 |
Family
ID=66764928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821800330.9U Expired - Fee Related CN208966279U (en) | 2018-11-02 | 2018-11-02 | A kind of down-hole casing scrapes tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488255A (en) * | 2018-11-02 | 2019-03-19 | 长江大学 | A kind of set tube cleaning tool that mating coiled tubing uses |
| CN114059967A (en) * | 2020-07-28 | 2022-02-18 | 中国石油天然气股份有限公司 | Water injection well testing and descaling integrated instrument |
-
2018
- 2018-11-02 CN CN201821800330.9U patent/CN208966279U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488255A (en) * | 2018-11-02 | 2019-03-19 | 长江大学 | A kind of set tube cleaning tool that mating coiled tubing uses |
| CN109488255B (en) * | 2018-11-02 | 2023-06-30 | 长江大学 | Casing cleaning tool matched with coiled tubing |
| CN114059967A (en) * | 2020-07-28 | 2022-02-18 | 中国石油天然气股份有限公司 | Water injection well testing and descaling integrated instrument |
| CN114059967B (en) * | 2020-07-28 | 2023-10-31 | 中国石油天然气股份有限公司 | Water injection well test descaling integrated instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190611 Termination date: 20211102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |