CN216008457U - Well wall cleaner - Google Patents
Well wall cleaner Download PDFInfo
- Publication number
- CN216008457U CN216008457U CN202122062200.8U CN202122062200U CN216008457U CN 216008457 U CN216008457 U CN 216008457U CN 202122062200 U CN202122062200 U CN 202122062200U CN 216008457 U CN216008457 U CN 216008457U
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- China
- Prior art keywords
- base pipe
- nozzle seat
- nozzle
- pipe
- coupling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A borehole wall cleaner comprises a coupling, a nozzle seat, a base pipe and scraper blades, wherein the coupling is arranged at the upper end of the base pipe and is a special coupling for a petroleum casing pipe or a geological drill rod, the upper end of the coupling is connected with the petroleum casing pipe or the geological drill rod, a plurality of nozzle seat mounting holes are formed in the outer side of the base pipe, the nozzle seat is welded with the nozzle seat through the nozzle seat mounting holes, the nozzle seats are uniformly distributed in the axial direction of the base pipe, nozzles are arranged on the nozzle seats, the plurality of scraper blades are arranged on the outer side of the base pipe, the scraper blades are uniformly distributed in the axial direction of the base pipe, and the scraper blades are made of hard alloy; the nozzle seat and the scraper blade are oppositely arranged on the base pipe, and a connecting line of the nozzle seat and the scraper blade penetrates through the axis of the base pipe; the base pipe is an oil casing pipe or a geological drill pipe, the base pipe is meter long, and the lower part of the base pipe is a conical seal.
Description
Technical Field
The utility model relates to the field of cleaners, in particular to a well wall cleaner.
Background
Because the mud is used in the positive circulation drilling process, mud skin can be formed on the well wall in the circulation process, and if the well wall is not well cleaned, the smoothness of a water path of the energy storage well can be directly influenced, and then the using effect of the energy storage well is influenced.
Patent application No. 211621134574.2 discloses a geothermal well wall of a well purger, includes: connecting portion, washing portion, its characterized in that, washing portion includes: wash axle, the first subassembly of burr brush, the hole that jets, it is the tubular structure of bottom shutoff to wash the axle, the first subassembly of burr brush is in with the hole setting that jets the washing is epaxial, the washing axle is connected to connecting portion. The burr brush head assembly is a steel wire rope burr brush head assembly and is annularly distributed along the cleaning shaft. This patent suffers from the following drawbacks:
1. the burr brush head component is a steel wire rope burr brush head, and can cause the brush head part to fall off in the process of friction with the well wall to form underground falling objects. Affecting the downhole safety.
2. The burr brush head assembly is too small to clean the well wall; the burr brush head component is too large, so that the shaft wall is easy to clamp in the process of cleaning and pulling the shaft wall, and accidents are caused.
3. The water jetting holes are distributed along the cleaning shaft in an annular mode, the hydraulic distribution is balanced, and the effect of cleaning the well wall by the burr brush head is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the well wall cleaner for rotationally scraping the well wall.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a wall of a well purger, includes coupling, nozzle holder, parent tube, scraper, the parent tube upper end has the coupling, the coupling is the special coupling of oil casing or geological drilling rod, oil casing or geological drilling rod are connected to the coupling upper end, the parent tube outside has a plurality of nozzle holder mounting holes, nozzle holder mounting hole welding nozzle holder, nozzle holder is at the ascending evenly distributed of parent tube axial, set up the nozzle on the nozzle holder, the parent tube outside has a plurality of scraper, the scraper is at the ascending evenly distributed of parent tube axial, the scraper material is carbide.
The nozzle seat and the scraper blade are oppositely arranged on the base pipe, and a connecting line of the nozzle seat and the scraper blade penetrates through the axis of the base pipe.
The base pipe is an oil casing pipe or a geological drill pipe, the base pipe is meter long, and the lower part of the base pipe is a conical seal.
Has the advantages that:
the base pipe of the utility model can be selected from waste drill pipes or petroleum casing pipes, thereby saving materials, and having simple manufacture and convenient maintenance.
The nozzle seat is welded on the base pipe, and nozzles with different sizes can be arranged on the base pipe according to hydraulic parameters of the slurry pump, so that the effect of cleaning the well wall cannot be limited by the discharge capacity of the slurry pump.
The scraper blade and the nozzle are oppositely arranged on the base pipe, and only one group is provided. Mud jets out through this application nozzle, produces powerful efflux, erodes the wall of a well, meanwhile, under the fluidic reaction force of mud, pushes the scraper blade to opposite direction, scrapes the wall of a well to really play wall of a well cleaning effect.
The base pipe is provided with nozzle seat mounting holes at the welding nozzle seat part, the aperture of the nozzle seat mounting holes is adjusted according to the actual situation, and nozzles with different sizes can be mounted on the nozzle seat according to the hydraulic parameters of the slurry pump.
Before the energy storage well is used for cleaning the well wall, the viscosity of slurry in the well shaft is reduced to be below 20s, the slurry pump is connected with an upper drilling tool through a coupling, a large amount of slurry enters a base pipe after the slurry pump is started, and is ejected through a nozzle to generate strong jet flow to scour the well wall, meanwhile, a rotary table is rotated, and a scraper blade is pushed to the opposite direction under the reaction force of the slurry jet flow to rotationally scrape the well wall, so that the well wall cleaning effect is really achieved, mud cakes are broken, a water layer is exposed, and a hydraulic channel is dredged.
The above detailed description of the energy storage well is intended to be illustrative, but not limiting, and thus variations and modifications may be made without departing from the general inventive concept and scope thereof.
Drawings
Fig. 1 is a schematic structural diagram of the borehole wall cleaner according to the utility model.
Detailed Description
The utility model is explained in more detail below with reference to the figures and examples:
the utility model provides a wall of a well purger, includes coupling 1, nozzle holder 2, parent tube 3, scraper 4, 3 upper ends of parent tube have coupling 1, coupling 1 is the special coupling of oil casing or geological drilling rod, 1 upper end connection oil casing or geological drilling rod of coupling, 3 outsides of parent tube have a plurality of nozzle holder mounting holes, and nozzle holder mounting hole welding nozzle holder 2, nozzle holder 2 is evenly distributed in 3 axial of parent tube, set up the nozzle on the nozzle holder 2, 3 outsides of parent tube have a plurality of scraper 4, scraper 4 is evenly distributed in 3 axial of parent tube, scraper 4 material is carbide.
The nozzle seat 2 and the scraper blade 4 are oppositely arranged on the base pipe 3, and the connecting line of the nozzle seat 2 and the scraper blade 4 penetrates through the axle center of the base pipe 3.
The base pipe 3 is a petroleum casing pipe or a geological drill pipe, the length of the base pipe 3 is 1-2 m, and the lower part of the base pipe 3 is in a conical seal shape.
The base pipe 3 can be made of waste drill pipes or petroleum casings, so that the material is saved, the manufacture is simple, and the maintenance is convenient.
The nozzle seat 2 is welded on the base pipe 3, and nozzles with different sizes can be arranged on the base pipe 3 according to hydraulic parameters of the slurry pump, so that the effect of cleaning the well wall cannot be limited by the discharge capacity of the slurry pump.
The scraper blade 4 of the utility model is mounted opposite the nozzle on the base pipe and has only one set. Mud jets out through this application nozzle, produces powerful efflux, erodes the wall of a well, meanwhile, under the fluidic reaction force of mud, pushes scraper blade 4 to opposite direction, scrapes the wall of a well to really play wall of a well cleaning effect.
The base pipe 3 of the utility model is welded with the nozzle holder 2 and is provided with the nozzle holder mounting hole, the aperture of the nozzle holder mounting hole is adjusted according to the actual situation, and the nozzle holder 2 can be provided with nozzles with different sizes according to the hydraulic parameters of the slurry pump.
Before the energy storage well is used for cleaning the well wall, the viscosity of slurry in the well shaft is reduced to be below 20s, the slurry pump is connected with an upper drilling tool through a coupling 1, a large amount of slurry enters a base pipe 3 after the slurry pump is started, and is ejected through a nozzle to generate strong jet flow to scour the well wall, meanwhile, a rotary table is rotated, and a scraper blade 4 is pushed to the opposite direction under the reaction force of the slurry jet flow to rotationally scrape the well wall, so that the well wall cleaning effect is really achieved, mud cakes are broken, a water layer is exposed, and a hydraulic channel is dredged.
The above detailed description of the energy storage well is intended to be illustrative, but not limiting, and thus variations and modifications may be made without departing from the general inventive concept and scope thereof.
Claims (3)
1. The well wall cleaner is characterized by comprising a coupling, a nozzle seat, a base pipe and scraper blades, wherein the coupling is arranged at the upper end of the base pipe and is special for an oil casing or a geological drill rod, the upper end of the coupling is connected with the oil casing or the geological drill rod, a plurality of nozzle seat mounting holes are formed in the outer side of the base pipe, the nozzle seat mounting holes are used for welding the nozzle seat, the nozzle seat is uniformly distributed in the axial direction of the base pipe, nozzles are arranged on the nozzle seat, the outer side of the base pipe is provided with the scraper blades, the scraper blades are uniformly distributed in the axial direction of the base pipe, and the scraper blades are made of hard alloy.
2. The well wall cleaner as claimed in claim 1, wherein the nozzle holder and the scraper blade are oppositely mounted on the base pipe, and a connecting line between the nozzle holder and the scraper blade passes through the axis of the base pipe.
3. The well wall cleaner as claimed in claim 2, wherein the base pipe is an oil casing or a geological drill pipe, the base pipe is one meter long, and the lower part of the base pipe is a conical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122062200.8U CN216008457U (en) | 2021-08-30 | 2021-08-30 | Well wall cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122062200.8U CN216008457U (en) | 2021-08-30 | 2021-08-30 | Well wall cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008457U true CN216008457U (en) | 2022-03-11 |
Family
ID=80593230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122062200.8U Expired - Fee Related CN216008457U (en) | 2021-08-30 | 2021-08-30 | Well wall cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216008457U (en) |
-
2021
- 2021-08-30 CN CN202122062200.8U patent/CN216008457U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220311 |