CN212671716U - Drifting device - Google Patents
Drifting device Download PDFInfo
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- CN212671716U CN212671716U CN202021077620.2U CN202021077620U CN212671716U CN 212671716 U CN212671716 U CN 212671716U CN 202021077620 U CN202021077620 U CN 202021077620U CN 212671716 U CN212671716 U CN 212671716U
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- scraping
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- well
- scraping cylinder
- guide rail
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Abstract
The utility model discloses a drifting device, including scraping a section of thick bamboo (7), it is used for scraping the wall of a well attachment, its characterized in that to scrape a section of thick bamboo (7): the bottom end face of the scraping cylinder (7) is an inclined plane (9); the lower end of the inclined plane (9) forms a tip part; the tip is used for cutting into the well wall attachment to enhance the scraping capacity of the scraping cylinder (7); the problem of current drifting ware mediation effect is poor is solved to improve test speed, reduce the operating cost.
Description
Technical Field
The utility model relates to an oil field test field drifting equipment, specific is to the equipment that the dirt such as attached greasy dirt, silt and corrosion of water injection well oil pipe inner wall cleared up the operation.
Background
Due to the factor of injecting media into the test well, the wall of the well and the inner wall of the underground water distributor are completely scaled, so that the inner wall of the oil pipe is reduced in diameter, the water quantity in the oil pipe is gathered, the blockage phenomenon occurs in the test process, the water quantity pressure fluctuation is large, and the water quantity of the ground flowmeter and the water quantity of the underground flowmeter are seriously inconsistent.
This problem is solved to well ware commonly used, but dredge the effect relatively poor, especially meet the soft dirt of colloid, the dead oil, easily lead to appearing the jamming phenomenon among the test procedure when the condition such as small size sand bridge, influence the test progress, need the large discharge well-flushing or oil pipe intercommunication solution this moment, the operating cost is higher.
Disclosure of Invention
In view of this, the utility model provides a drifting device solves the poor problem of current drifting device mediation effect.
In order to realize the above utility model purpose, a drifting device, including scraping a section of thick bamboo, it is used for down with scraping the wall of a well attachment, its characterized in that to scrape a section of thick bamboo:
the end surface of the bottom of the scraping cylinder is an inclined surface;
the lower end of the inclined plane forms a tip part;
the tip portion is used for cutting into the well wall attachment to enhance the scraping capacity of the scraping cylinder.
Furthermore, a hole groove is formed in the wall of the scraping cylinder;
the hole groove is used for reducing the accumulation of the well wall attachments in the scraping cylinder.
Further, the well dredging device also comprises an impact mechanism;
the impact mechanism is used for applying impact force to the scraping cylinder;
the impact force is used for increasing the driving force required by the tip to cut into the well wall attachment so as to enhance the scraping capacity of the scraping cylinder.
Further, the impact mechanism comprises an impact barrel;
and the striking cylinder is used for applying the impact force to the scraping cylinder when the scraping cylinder moves downwards to scrape the well wall attachments and meet resistance.
Further, the impact mechanism further comprises an elastic piece;
the elastic element is used for generating elastic force when the scraping cylinder descends to scrape the well wall attachments and meets with a resistance;
the elastic force is used for driving the striking cylinder to move downwards so as to apply the impact force to the scraping cylinder.
Further, the elastic piece is connected with the guide rail;
the guide rail serves as a track for the elastic member to axially expand and contract to generate the elastic force.
Further, the lower end of the guide rail is connected with the scraping cylinder;
the scraping cylinder moves downwards to scrape the well wall attachments to generate a reaction force when encountering a resistance;
the counterforce is used for driving the scraping cylinder to compress the elastic part along the guide rail to axially stretch and contract so as to generate the elastic force.
Furthermore, an upper joint is connected above the guide rail;
and the lower part of the upper joint is connected with the impact barrel and is used for connecting a well descending pipe column.
Further, the elastic member is a spring.
Furthermore, a boss structure is arranged at the lower end of the guide rail;
the scraping cylinder is internally provided with a reducing structure;
the boss structure and the reducing structure correspondingly form a connecting pair;
the connecting pair is used for compressing the elastic part by the scraping cylinder along the guide rail.
The utility model discloses following beneficial effect has:
the utility model discloses lead to well ware has set up point structure in scraping the barrel bottom, and this point structure and wall of a well attachment area of contact are little, under the effect of the same drive force, and the scraping effort to wall of a well attachment is bigger to the reinforcing scrapes the scraping ability of a section of thick bamboo; in addition, the impact mechanism which can impact the scraping cylinder when the scraping cylinder is blocked is additionally arranged, and under the action of impact force generated by the impact mechanism, the scraping force of the scraping cylinder under the condition of being blocked is further improved, so that the well dredging effect of the well dredging device is ensured, the testing speed is improved, and the operation cost is reduced.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is an external structural schematic diagram of a well dredging device according to an embodiment of the invention;
fig. 2 is a sectional view of fig. 1.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. However, for parts not described in detail, those skilled in the art can fully understand the present invention.
Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the invention and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Fig. 1 is an external structural schematic diagram of a well dredging device according to an embodiment of the invention; FIG. 2 is a cross-sectional view of FIG. 1; as shown in fig. 1: the utility model provides a drifting device, includes a scraping section of thick bamboo 7, a scraping section of thick bamboo 7 is used for descending in order to scrape the wall of a well annex, the bottom terminal surface of a scraping section of thick bamboo 7 is inclined plane 9, the lower extreme of inclined plane 9 forms the point portion, the point portion is used for cutting into the wall of a well annex is in order to strengthen the scraping ability of a scraping section of thick bamboo 7.
The drifting device of this embodiment has set up point portion structure in the bottom of scraping a section of thick bamboo 7, and this point portion structure is more for the loop configuration that flushes with prior art's scraping bobbin base portion, and point portion structure is little with wall of a well attachment area of contact, and under the effect of applying the same drive power to scraping a section of thick bamboo 7, scraping a section of thick bamboo 7 that has point portion structure is bigger to the scraping effort of wall of a well attachment to the reinforcing scraping ability of scraping a section of thick bamboo 7, effectively solves the poor problem of current drifting device mediation effect.
The included angle between the inclined plane 9 and the axis of the scraping cylinder 7 can be selected to be 30 degrees, and other angles can be selected certainly, and the inclined plane 9 with the included angle of 30 degrees has longer service life under the condition of ensuring the scraping capability of the scraping cylinder 7; if the angle is too small, the area of the tip part is too large, and the tip part is not easily damaged, so that the service life can be prolonged, but the scraping force of the scraping cylinder 7 on well wall attachments is reduced.
In fig. 1, the wall of the scraping cylinder 7 is provided with a hole 8, and the hole 8 is used for removing the well wall attachments entering the scraping cylinder 7. In the process of downwards scraping the attachments on the well wall by the scraping cylinder 7, some attachments have certain viscosity, such as colloidal soft dirt and dead oil, can be adhered to and accumulated in the inner cylinder of the scraping cylinder 7, and when the attachments are accumulated to a certain amount, the effect and the progress of downwards scraping of the scraping cylinder 7 can be influenced; if the hole grooves 8 are formed in the tubular wall, the deposited deposits are not deposited on the well wall deposit due to the lack of the deposit wall when the deposited deposits are deposited on the hole grooves 8, and the hole grooves 8 prevent the deposit from being deposited. Preferably, 4-6 hole grooves are uniformly distributed on the cylinder wall along the circumferential direction, and most preferably 5 hole grooves are uniformly distributed on the cylinder wall; the shape of the hole groove is a longitudinal strip-shaped groove. And by adopting the longitudinal strip-shaped groove, the height of the longitudinal piled foundation is reduced, and the firmness degree of the well wall is considered.
In fig. 1, the well dredging device further comprises an impact mechanism for applying an impact force to the scraping cylinder 7, wherein the impact force is used for increasing the driving force required by the tip to cut into the well wall attachment so as to enhance the scraping capability of the scraping cylinder 7.
The drifting ware of this embodiment sets up the basis of sharp portion structure reinforcing scraping ability bottom scraping section of thick bamboo 7, still set up the second mechanism that can increase drifting efficiency and drifting effect, add promptly and can carry out the impact mechanism who strikes to scraping a section of thick bamboo when meeting the resistance in scraping a section of thick bamboo, under the effect of the impact force that impact mechanism produced, further improve scraping section of thick bamboo 7 and meet the scraping force under the resistance situation, thereby ensure the drifting effect of drifting ware, improve test speed, and the operation cost is reduced.
In fig. 1, the impact mechanism includes an impact cylinder 4 and an elastic member 5; the striking cylinder 4 is used for applying the impact force to the scraping cylinder 7 when the scraping cylinder 7 descends to scrape the well wall attachments and meets with a blockage; the elastic element 5 is used for generating an elastic force when the scraping cylinder 7 descends to scrape the well wall attachments and meets with a blockage, and the elastic force is used for driving the striking cylinder 4 to descend to apply the impact force to the scraping cylinder 7; the elastic member 5 is connected with a guide rail 6, and the guide rail 6 is used as a track for the elastic member 5 to axially extend and contract to generate the elastic force; the lower extreme of guide rail 6 is connected a scraping section of thick bamboo 7, a scraping section of thick bamboo 7 descends in order to scrape produce the reaction force when the wall of a well attachment meets the resistance, the reaction force is used for the drive a scraping section of thick bamboo 7 is followed guide rail 6 compresses elastic component 5 goes on the axial is flexible in order to produce elastic force.
In this embodiment, the elastic member 5 is a spring. Of course, other elastic elements, such as rubber rings, etc., can be used, but because the elastic shape of the spring is greatly changed, the impact barrel 4 can be ensured to have a larger impact stroke, so that a larger impact force is generated.
This impact mechanism's theory of action is, according to elastic reaction principle, when the front end of scraping section of thick bamboo 7 meets the hindrance, scraping section of thick bamboo 7 stops no longer descending this moment, meanwhile, under the spring action of elastic component 5, because of striking a certain distance that exists between section of thick bamboo 4 and the scraping section of thick bamboo 7, strike section of thick bamboo 4 will continue to move downwards along guide rail 6 until striking the scraping section of thick bamboo 7 that stops no longer descending, strike section of thick bamboo 4 and exerted the impact force to scraping section of thick bamboo 7 when striking scraping section of thick bamboo 7 promptly, scraping section of thick bamboo 7 is under the effect of this impact force, carry out the secondary scraping to the attachment, the trafficability under the circumstances is met to the drifting device has been increased, thereby ensure that scraping section of thick bamboo 7 is through meeting the well section of hindering.
In fig. 1, the guide rail 6 is connected with the upper joint 2 above, the impact barrel 4 is connected with the lower part of the upper joint 2, and the well dredger is connected with a well descending pipe column through the lower joint 2.
In fig. 1, the lower end of the guide rail 6 is provided with a boss structure, the inside of the scraping cylinder 7 is provided with a variable diameter structure, the boss structure and the variable diameter structure correspondingly form a connection pair, and the connection pair is used for the scraping cylinder 7 to compress the elastic part 5 along the guide rail 6. With this connection, the scraping cylinder 7 is firmly connected to the guide rail 6 and the purpose of compressing the spring along the axial direction of the guide rail 6 by the scraping cylinder 7 is achieved.
Specifically, the working process of the well dredging device of the embodiment is described with reference to the accompanying drawings to help further understand the technical scheme of the application:
the upper end of the upper joint 2 is connected with a well descending pipe column, a first sealing ring 1 is arranged at the joint part of the upper joint and the lower joint, the lower end of the lower joint 2 is connected with an impact cylinder 4, and a second sealing ring 3 is arranged between the upper joint and the impact cylinder; the guide rail 6 passes through a spring (elastic element 5) and a scraping cylinder 7 and then is connected below the lower joint 2 through internal threads, and after connection, a certain distance is reserved between the lower edge of the impact cylinder 4 and the upper edge of the scraping cylinder 7; at this point, the connection of the drifting device and the well descending pipe column is finished;
in the descending process of the drifting device along with a lower well pipe column, the scraping cylinder 7 scrapes well wall attachments, and because the front section of the scraping cylinder 7 is provided with a tip part structure, the capability of scraping the well wall attachments is stronger, and if the well wall attachments are accumulated at the hole groove 8 in the scraping cylinder 7, the hole groove 8 can prevent the well wall attachments from being accumulated continuously; when the front end of a scraping cylinder 7 meets obstacles, the scraping cylinder 7 stops moving no longer, meanwhile, the upper pipe column continues to move a compression spring (elastic part 5) downwards under the action of gravity and inertia, a certain distance exists between the striking cylinder 4 and the scraping cylinder 7, the striking cylinder 4 continues to move downwards along the guide rail 6 until the striking cylinder 7 stopping moving no longer, namely, the striking cylinder 4 exerts impact force on the scraping cylinder 7 when striking the scraping cylinder 7, the scraping cylinder 7 carries out secondary scraping on attachments under the action of the impact force, the passing capacity of the drift casing under the condition of meeting obstacles is increased, and therefore the scraping cylinder 7 is ensured to pass through the well meeting obstacle section smoothly.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions, modifications, etc. can be made without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A kind of well dredger, including scraping the tube (7), the said scraping tube (7) is used for going downward in order to scrape the attachment of well wall, characterized by:
the bottom end face of the scraping cylinder (7) is an inclined plane (9);
the lower end of the inclined plane (9) forms a tip part;
the tip is used for cutting into the well wall attachment to enhance the scraping capacity of the scraping cylinder (7).
2. The drift of claim 1, wherein:
a hole groove (8) is formed in the wall of the scraping cylinder (7);
the hole groove (8) is used for reducing the accumulation of the well wall attachments in the scraping cylinder (7).
3. A drift as claimed in claim 1 or 2, wherein:
the well dredging device also comprises an impact mechanism;
the impact mechanism is used for applying impact force to the scraping cylinder (7);
the impact force is used for increasing the driving force required by the tip to cut into the well wall attachment so as to enhance the scraping capacity of the scraping cylinder (7).
4. The well dredger according to claim 3, characterized in that:
the impact mechanism comprises an impact barrel (4);
the striking cylinder (4) is used for the scraping cylinder (7) to descend so as to scrape when the well wall attachments are in resistance, the impact force is applied to the scraping cylinder (7).
5. The well dredger according to claim 4, characterized in that:
the impact mechanism further comprises an elastic piece (5);
the elastic element (5) is used for generating elastic force when the scraping cylinder (7) descends to scrape the well wall attachments and meets with a resistance;
the elastic force is used for driving the striking cylinder (4) to move downwards so as to apply the impact force to the scraping cylinder (7).
6. The well dredger according to claim 5, characterized in that:
the elastic piece (5) is connected with the guide rail (6);
the guide rail (6) is used as a track for the elastic member (5) to axially extend and retract to generate the elastic force.
7. The drift of claim 6, wherein:
the lower end of the guide rail (6) is connected with the scraping cylinder (7);
the scraping cylinder (7) moves downwards to scrape the well wall attachments to generate a reaction force when encountering a resistance;
the counterforce is used for driving the scraping cylinder (7) to compress the elastic part (5) along the guide rail (6) to axially stretch and contract so as to generate the elastic force.
8. The well dredger according to claim 7, wherein:
the upper part of the guide rail (6) is connected with the upper joint (2);
and the lower part of the upper joint (2) is connected with the impact barrel (4) and is used for connecting a well-descending pipe string.
9. A drift as claimed in any one of claims 5 to 8, wherein:
the elastic piece (5) is a spring.
10. A drift as claimed in any one of claims 6 to 8, wherein:
the lower end of the guide rail (6) is provided with a boss structure;
the scraping cylinder (7) is internally provided with a reducing structure;
the boss structure and the reducing structure correspondingly form a connecting pair;
the connecting pair is used for compressing the elastic piece (5) by the scraping cylinder (7) along the guide rail (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077620.2U CN212671716U (en) | 2020-06-12 | 2020-06-12 | Drifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077620.2U CN212671716U (en) | 2020-06-12 | 2020-06-12 | Drifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212671716U true CN212671716U (en) | 2021-03-09 |
Family
ID=74822296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021077620.2U Active CN212671716U (en) | 2020-06-12 | 2020-06-12 | Drifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212671716U (en) |
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2020
- 2020-06-12 CN CN202021077620.2U patent/CN212671716U/en active Active
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