CN210768670U - Well wall repairing type roller guide shoe - Google Patents
Well wall repairing type roller guide shoe Download PDFInfo
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- CN210768670U CN210768670U CN201921595711.2U CN201921595711U CN210768670U CN 210768670 U CN210768670 U CN 210768670U CN 201921595711 U CN201921595711 U CN 201921595711U CN 210768670 U CN210768670 U CN 210768670U
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Abstract
The utility model discloses a wall of a well restoration formula roller gyro wheel guide shoe, including lower clutch, shell, center pin, cascaded tooth gyro wheel, fixed block, spray mushroom head, roller and roller spacer. The utility model has the advantages that: can will hinder barrier such as some detritus and progressively crush under the dual function of cascaded tooth gyro wheel and the wall of a well, restore irregular wall of a well, eliminate the irregular material that the outstanding wall of a well makes the wall of a well smooth and level, well cementation cement thick liquid is unanimous at restoration well section thickness, and then obtains high quality well cementation cement ring post. The damage caused to the well wall by impact can be avoided, the blocking point substances protruding out of the well wall can be avoided under the action of the mushroom head upper roller, the tool string is prevented from being difficult to drop and being stuck, the tool string is suitable for casing pipe well-dropping operation with recyclable slurry and fish bone meng pipe tool string well-dropping operation with non-recyclable slurry, no influence is generated on well drilling and completion operation, and the tool is an oil-gas well operation tool with high popularization value.
Description
Technical Field
The utility model relates to a guide shoe specifically is a wall of a well restoration formula roller gyro wheel guide shoe, belongs to oil, natural gas drilling tool technical field.
Background
In the process of the tool string descending operation, particularly in the process of descending the well of the well cementation casing pipe string, the fish bone meng pipe and other tool strings, the tool string is difficult to descend due to the fact that the irregular well wall, the steps and other foreign matters form blocking points, and even the tool string is stuck and can not continue descending the well. Even complex conditions under the well are caused, so that the well construction period is prolonged, and the well construction cost is increased. Meanwhile, in the process of putting the pipe string in, due to the impact effect of the pipe string, the head of the pipe string damages the well wall, the well wall is damaged, an underground expanding point is formed, and the well cementation quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wall of a well restoration formula roller gyro wheel guide shoe in order to solve above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a wall of a well restoration formula roller gyro wheel guide shoe, includes the guide shoe, the guide shoe comprises lower clutch, shell, center pin, cascaded tooth gyro wheel, fixed block, injection mushroom head, roller and roller spacer, lower clutch, shell, center pin, cascaded tooth gyro wheel, fixed block, injection mushroom head, roller and roller spacer are installed according to the order from a left side to the right side in proper order, lower clutch and shell pass through threaded connection, shell and center pin adopt clearance fit to guarantee the validity of relative rotation, center pin and cascaded tooth gyro wheel pass through the interference mode and connect, shell and fixed block connect through the screw thread and provide installation space for cascaded tooth gyro wheel, cascaded tooth gyro wheel and fixed block adopt clearance fit to guarantee the validity of relative rotation, fixed block and injection mushroom head adopt threaded connection, the spraying mushroom head and the roller are in clearance fit to guarantee the effectiveness of the rolling of the roller, the roller positioning plate is installed on the spraying mushroom head in an embedding mode, and the roller positioning plate are guaranteed to be in clearance fit to guarantee the effectiveness of the rolling of the roller.
As a further aspect of the present invention: and a channel for slurry to flow is arranged in the guide shoe.
As a further aspect of the present invention: the four stepped tooth rollers and the centralizer of the shell form an external supporting part of the tool, and the top of the mushroom spraying head is provided with a roller.
As a further aspect of the present invention: the mushroom head, the roller and the roller positioning sheet form a resistance-avoiding and righting part of the tool.
As a further aspect of the present invention: the shell, the central shaft, the stepped tooth roller and the fixed block form a roller centralizing and repairing well wall part of the tool.
As a further aspect of the present invention: the stepped tooth roller, the roller and the roller positioning sheet are made of hard alloy.
As a further aspect of the present invention: the stepped tooth roller is designed in a stepped mode.
The utility model has the advantages that: the borehole wall repairing type roller guide shoe is reasonable in design, a channel for slurry to flow is arranged in the guide shoe, the smooth supply of slurry to a mushroom head position can be ensured in the descending process of a tool string, the circulation of the slurry can be ensured in the descending process of the tool string, so that substances such as drill cuttings and the like generated in the descending process of the tool can be timely discharged back to a well head, the four stepped tooth rollers and a centralizer of a shell form an external supporting part of the tool, the roller is designed on the top of the mushroom head, the tool string can be ensured not to be blocked in the descending process of the tool string, particularly when the tool string encounters an irregular borehole wall, steps and other foreign matters, the difficult descending of the tool string, particularly the pipe clamping situation, the mushroom head, the roller and the roller positioning sheet form a blockage avoiding and righting part of the tool, when the mushroom head is sprayed, the part of the roller protruding out of the mushroom head contacts with a blocking point first, because rolling friction is less than sliding friction, tool string mushroom head part relocation avoids hindering the point under the roll righting effect of roller, and a housing, the center pin, the gyro wheel righting restoration wall of a well part that this instrument was constituteed to cascaded tooth gyro wheel and fixed block, will hinder barrier such as some detritus crushing under the dual function of cascaded tooth gyro wheel and the wall of a well, and then restore the wall of a well, it is smooth to make the wall of a well of eliminating of hindering the point smooth, cascaded tooth gyro wheel, the used material of roller and roller spacer is carbide, can guarantee that the instrument can not lead to the fact the influence to the performance of instrument because of excessive wearing and tearing in the use, cascaded tooth gyro wheel adopts cascaded design, can guarantee to meet the hindering point material of hindering the point and can be followed the top to the bottom subsection and chopped up and clear.
Drawings
FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 2 is a schematic view of the stepped tooth roller structure of the present invention;
fig. 3 is a schematic view of the mushroom head structure of the present invention.
In the figure: 1. the device comprises a lower joint, 2, a shell, 3, a central shaft, 4, a stepped tooth roller, 5, a fixing block, 6, a mushroom spraying head, 7, rollers, 8 and a roller positioning sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, a borehole wall repairing type roller guide shoe comprises a guide shoe, wherein the guide shoe comprises a lower connector 1, a shell 2, a central shaft 3, a stepped tooth roller 4, a fixing block 5, a mushroom injection head 6, a roller 7 and a roller positioning sheet 8, the lower connector 1, the shell 2, the central shaft 3, the stepped tooth roller 4, the fixing block 5, the mushroom injection head 6, the roller 7 and the roller positioning sheet 8 are sequentially installed from left to right, the lower connector 1 is connected with the shell 2 through threads, the shell 2 is in clearance fit with the central shaft 3 to ensure the effectiveness of relative rotation, an oil filling hole is machined on a tool to ensure the effectiveness of tool lubrication, the central shaft 3 is connected with the stepped tooth roller 4 through an interference manner, lubricating oil such as kerosene is coated during connection to ensure smooth installation, the shell 2 is connected with the fixing block 5 through threads to provide an installation space for the stepped tooth roller 4, cascaded tooth gyro wheel 4 and fixed block 5 adopt clearance fit to guarantee relative rotation's validity, fixed block 5 adopts threaded connection with injection mushroom head 6, injection mushroom head 6 and roller 7 adopt clearance fit to guarantee the rolling validity of roller, roller spacer 8 adopts impregnated mode to install on injection mushroom head 6, and guarantees roller 7 and roller spacer 8 adopt clearance fit to guarantee the rolling validity of roller.
Further, in the embodiment of the utility model provides an in, the inside passageway that supplies the mud circulation that is equipped with of guide shoe can guarantee that the tool string is going into in-process mud and can supply with mushroom head position smoothly under, can guarantee that the tool string goes into in-process mud and keep circulating under, makes the instrument in time return discharge well head at materials such as drill chip that the in-process produced of going into under.
Further, in the embodiment of the utility model provides an in, four the outside supporting part of this instrument is constituted together to cascaded tooth gyro wheel 4 and shell 2's centralizer, just the top design that sprays mushroom head 6 has roller 7, can guarantee that the instrument cluster goes into the in-process, and the instrument cluster can not meet and hinder when especially meetting irregular wall of a well, step and other foreign matter, avoids the instrument cluster to go into the emergence of the especially card pipe condition of difficulty under.
Further, in the embodiment of the utility model provides an in, spray mushroom head 6, roller 7 and roller spacer 8 and constitute keeping away of this instrument and hinder righting part, when spray mushroom head 6 part meets and hinders the point, the first contact of the outstanding mushroom head of roller 7 hinders the point, because rolling friction is less than sliding friction, tool cluster mushroom head part relocation avoids hindering the point under roller 7's the roll righting effect.
Further, in the embodiment of the utility model provides an in, the gyro wheel that shell 2, center pin 3, cascaded tooth gyro wheel 4 and fixed block 5 constitute this instrument is right and is restoreed the wall of a well part, will hinder obstacles such as some detritus crushing under the dual function of cascaded tooth gyro wheel 4 and the wall of a well, and then restores the wall of a well, and it is smooth to make to hinder some elimination walls of a well.
Further, in the embodiment of the utility model provides an in, the used material of cascaded tooth gyro wheel 4, roller 7 and roller spacer 8 is carbide, can guarantee that the instrument can not cause the influence to the performance of instrument because of excessive wearing and tearing in the use.
Further, in the embodiment of the utility model provides an in, cascaded tooth gyro wheel 4 adopts cascaded design, can guarantee to meet the hindering some material that hinders the point and can be followed the top to the bottom subsection and chopped up the clearance.
The working principle is as follows: when the guide shoe is used, obstacles such as resistance point rock debris and the like can be progressively crushed under the dual actions of the stepped tooth roller 4 and the well wall, the irregular well wall can be repaired, irregular substances protruding out of the well wall are eliminated, the well wall is smooth and flat, the thickness of well cementing cement paste in a repaired well section is consistent, and then a high-quality well cementing cement ring column is obtained, the damage to the well wall caused by impact can be avoided, the resistance point substances protruding out of the well wall can be avoided under the action of the rollers 7 on the spray mushroom head 6, the situations of difficulty in descending and blocking of a tool string are avoided, the guide shoe is not only suitable for the casing descending operation with recyclable slurry, but also suitable for the descending operation of a tool string with non-recyclable slurry and fishbone dreaming pipe, the use of the guide shoe can not generate any influence on the drilling and completion operation, and the guide shoe is an oil-gas well operation tool.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a wall of a well restores formula roller gyro wheel guide shoe, includes the guide shoe, its characterized in that: the guide shoe comprises a lower joint (1), a shell (2), a central shaft (3), a stepped tooth roller (4), a fixing block (5), a spray mushroom head (6), a roller (7) and a roller positioning sheet (8), wherein the lower joint (1), the shell (2), the central shaft (3), the stepped tooth roller (4), the fixing block (5), the spray mushroom head (6), the roller (7) and the roller positioning sheet (8) are sequentially installed from left to right, the lower joint (1) is connected with the shell (2) through threads, the shell (2) and the central shaft (3) are in clearance fit to ensure the effectiveness of relative rotation, the central shaft (3) is connected with the stepped tooth roller (4) in an interference manner, and the shell (2) is connected with the fixing block (5) through threads to provide an installation space for the stepped tooth roller (4), stepped tooth gyro wheel (4) and fixed block (5) adopt clearance fit to guarantee relative rotation's validity, fixed block (5) and spray mushroom head (6) adopt threaded connection, spray mushroom head (6) and roller (7) and adopt clearance fit to guarantee the rolling validity of roller, roller spacer (8) adopt impregnated mode to install on spraying mushroom head (6), and guarantee roller (7) and roller spacer (8) adopt clearance fit to guarantee the rolling validity of roller.
2. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: and a channel for slurry to flow is arranged in the guide shoe.
3. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: the four stepped tooth rollers (4) and the centralizer of the shell (2) form an external supporting part of the tool, and a roller (7) is designed at the top of the mushroom spraying head (6).
4. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: the mushroom head (6), the roller (7) and the roller positioning sheet (8) form a resistance-avoiding and righting part of the tool.
5. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: the roller righting and repairing well wall part of the tool is composed of the shell (2), the central shaft (3), the stepped tooth roller (4) and the fixing block (5).
6. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: the stepped tooth roller (4), the roller (7) and the roller positioning sheet (8) are all made of hard alloy.
7. The roller guide shoe for repairing well wall as claimed in claim 1, wherein: the stepped tooth roller (4) is designed in a stepped mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595711.2U CN210768670U (en) | 2019-09-24 | 2019-09-24 | Well wall repairing type roller guide shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595711.2U CN210768670U (en) | 2019-09-24 | 2019-09-24 | Well wall repairing type roller guide shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768670U true CN210768670U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921595711.2U Active CN210768670U (en) | 2019-09-24 | 2019-09-24 | Well wall repairing type roller guide shoe |
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| CN (1) | CN210768670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
-
2019
- 2019-09-24 CN CN201921595711.2U patent/CN210768670U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608006A (en) * | 2019-09-24 | 2019-12-24 | 重庆科技学院 | Well wall repairing type roller guide shoe |
| CN110608006B (en) * | 2019-09-24 | 2024-05-10 | 重庆科技学院 | Roller guide shoe for repairing well wall |
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