CN218117731U - External clamping type well pipe fishing device - Google Patents
External clamping type well pipe fishing device Download PDFInfo
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- CN218117731U CN218117731U CN202222495852.5U CN202222495852U CN218117731U CN 218117731 U CN218117731 U CN 218117731U CN 202222495852 U CN202222495852 U CN 202222495852U CN 218117731 U CN218117731 U CN 218117731U
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- well pipe
- joint
- fishing device
- salvaging
- salvaging body
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Abstract
The utility model discloses an outer card formula well casing fishing device relates to the well casing and salvages technical field. It includes the drilling rod, its characterized in that: the fishing device also comprises a fishing body, a clamping material and a guide rod; the upper end and the lower end of the salvaging body are respectively connected with the drill rod and the guide rod through joints; the joint is of a tubular structure; the diameter of the middle part of the salvaging body is larger than the diameters of the upper part and the lower part of the salvaging body; the upper end of the salvaging body is provided with a feed inlet; the upper part of the outer side of the salvaging body is provided with a plurality of discharge holes communicated with the feed inlet. The utility model has the advantages that: the device has the advantages of simple structure, convenient processing, recycling and long service life.
Description
Technical Field
The utility model relates to a technical field is salvaged to the well casing, in particular to outer cassette well casing fishing device.
Background
In drilling and well drilling construction, well pipes such as a sleeve, a rope drill rod, a rock core pipe and the like are frequently tripped, broken or fall into a hole, the broken accident head of the accident is often in a twist shape, a split bamboo shape, a horseshoe shape or other irregular shapes, the accident head is often deviated from a position, in a hole, of a hall, a karst cave or a position with larger bending degree, of the center of the hole, the accident head is salvaged by using a common screw tap under the conditions, time and labor are wasted, and success is difficult. In order to solve the similar technical problems, a vase-shaped external clamping type fishing pipe device with a guide rod is developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides an outer card formula well casing fishing device. The device has the advantages of simple structure, convenient processing, recyclable use and long service life.
The utility model adopts the technical proposal that: the utility model provides an outer card formula well casing fishing device, includes the drilling rod, its characterized in that: the fishing device also comprises a fishing body, a clamping material and a guide rod; the upper end and the lower end of the salvaging body are respectively connected with the drill rod and the guide rod through joints; the joint is of a tubular structure; the diameter of the middle part of the salvaging body is larger than the diameters of the upper part and the lower part of the salvaging body; the upper end of the salvaging body is provided with a feed inlet; the upper part of the outer side of the salvaging body is provided with a plurality of discharge holes communicated with the feed inlet.
Further optimizes the technical proposal that the salvaging body of the external clamping type well pipe salvaging device is in a vase shape.
Further optimizes the technical proposal that the material clamping of the external clamping type well pipe fishing device is a steel ball with the diameter of 5-6 mm.
Further optimizing the technical scheme, the upper end and the lower end of each joint of the externally-clamped well pipe fishing device are provided with threads; the upper end of the salvaging body is in threaded connection with the upper joint, and the upper end of the upper joint is in threaded connection with the drill rod; the lower end of the salvaging body is connected with the lower part of the connector through threads, and the lower end of the lower part of the connector is connected with the guide rod through threads.
Further optimizes the technical proposal that the screw thread arranged on the joint of the external clamping type well pipe fishing device is opposite to the screw thread of the well pipe to be fished.
Further optimize this technical scheme, the joint outside of a formula well casing fishing device of outer cassette all opens the draw-in groove.
Further optimizes the technical proposal that the inner diameter of the joint, the inner diameter of the drill rod and the inner diameter of the feed inlet of the external clamping type well pipe fishing device are communicated with each other.
Further optimizes the technical proposal that the inner diameter of the joint, the inner diameter of the drill rod and the inner diameter of the feed inlet of the external clamping type well pipe fishing device are the same.
Further optimizing the technical scheme, the upper part of the outer side of the fishing body of the externally-clamped well pipe fishing device is provided with three discharge ports communicated with the feed inlet, and the three discharge ports are uniformly distributed along the ring shape; the discharge ports are inclined at 45 degrees along the axial direction.
Further optimizes the technical proposal that the lower end of the guide rod of the external clamping type well pipe fishing device is in a cone shape.
The utility model discloses compare with traditional well casing fishing device, its beneficial effect lies in:
1. the salvaging body, the joint, the guide rod, the drill rod, the clamping material, the feeding hole and the discharging hole are matched, the accident well pipe and the salvaging body are integrated by the annular clamping material wedge, the clamping material of the lifting drill rod is more and more clamped in the annular space, and the salvaging body lifts the accident well pipe together under the action of the annular clamping material wedge;
2. the lower part of the fishing body is also a conical surface, so that the guiding performance is good, and the success rate of fishing the well pipe is high; only the connector thread needs to be machined and replaced, and the fishing body does not need to be machined for multiple times, so that the fishing body is convenient to adjust, replace and adapt to use; the well pipe fishing efficiency is high, the screw thread of the accident well pipe cannot be broken, and the drilling cost is saved; the device has simple structure, convenient processing, recycling and long service life;
3. the rotation directions of the connector threads and the connecting threads of the accident well pipe are opposite, so that the accident well pipe can be taken out in sections, and the safety of fishing the well pipe is greatly improved; if the pipe diameter of the accident well pipe is larger, the fishing body can be processed into a hollow body, and the weight of the whole device can be greatly reduced.
Drawings
FIG. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is a top sectional view of the present invention;
FIG. 3 is a lower partial sectional view of the present invention;
FIG. 4 is a cross-sectional view of the slot of the present invention;
FIG. 5 is a cross-sectional view of the discharge port of the present invention;
in the figure, 1, a drill rod; 2. fishing the body; 3. blocking the material; 4. a joint; 5. a guide rod; 6. a feed inlet; 7. a discharge port; 8. a card slot; 9. an accident well pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, an external clamping type well pipe fishing device comprises a drill rod 1, and is characterized in that: the fishing device also comprises a fishing body 2, a clamping material 3 and a guide rod 5; the upper end and the lower end of the salvaging body 2 are respectively connected with the drill rod 1 and the guide rod 5 through the joints 4; the joint 4 is of a tubular structure; the diameter of the middle part of the salvaging body 2 is larger than the diameters of the upper part and the lower part of the salvaging body; the upper end of the salvaging body 2 is provided with a feed inlet 6; the upper part of the outer side of the salvaging body 2 is provided with a plurality of discharge holes 7 communicated with the feed inlet 6; the salvaging body 2 is in a vase shape; the blocking material 3 is a steel ball with the diameter of 5-6 mm; the upper end and the lower end of each joint 4 are provided with threads; the upper end of the salvaging body 2 is in threaded connection with the joint 4 at the upper part, and the upper end of the joint 4 at the upper part is in threaded connection with the drill rod 1; the lower end of the salvaging body 2 is in threaded connection with a joint 4 at the lower part, and the lower end of the joint 4 at the lower part is in threaded connection with a guide rod 5; the screw thread arranged on the joint 4 has the opposite rotation direction with the screw thread of the well pipe to be salvaged; the outer sides of the connectors 4 are provided with clamping grooves 8; the inner diameter of the joint 4, the inner diameter of the drill rod 1 and the inner diameter of the feed inlet 6 are communicated with each other; the inner diameter of the joint 4, the inner diameter of the drill rod 1 and the inner diameter of the feed inlet 6 are the same; the upper part of the outer side of the salvaging body 2 is provided with three discharge ports 7 communicated with the feed port 6, and the three discharge ports 7 are uniformly distributed along the ring shape; the discharge ports 7 are inclined at 45 degrees along the axial direction; the lower end of the guide rod 5 is in a shape of a cone with a round tip.
The blocking material 3 can be steel particles used in conventional drilling; the specific structural shape of the fishing body 2 is shown in figure 1; the accident well pipe 9 to be salvaged is marked in the figure 1, so that the understanding is convenient; the angle formed by the outer diameter of the middle part of the salvaging body 2 and the outer diameter of the upper part of the salvaging body 2 is smaller than the angle formed by the outer diameter of the middle part of the salvaging body 2 and the outer diameter of the lower part of the salvaging body 2, and the angle formed by the outer diameter of the middle part of the salvaging body 2 and the outer diameter of the upper part of the salvaging body 2 is smaller; the outer diameter of the middle part of the salvaging body 2 is matched with the inner diameter of the accident well pipe 9 to be salvaged, namely a certain gap exists, the salvaging device can pass through the accident well pipe 9, but when the clamping material 3 is put in, the clamping material 3 can be retained in an annular space formed by the outer surface of the upper part of the salvaging body 2 and the accident well pipe 9; when the drill rod 1 does not have the material clamping opening 3, an opening can be formed, so that the material can be conveniently fed;
the lower end of a salvaging body 2 of the device is connected with a guide rod 5 into a whole through a joint 4, then a drill rod 1 for salvaging an accident well pipe 9 is connected with the joint 4, the salvaging body 2, the joint 4 and the guide rod 5 form the whole, the whole is drilled and is connected with the drill rod 1 in sequence until the salvaging body 2 is drilled into the accident well pipe 9, the middle part of the salvaging body 2 is required to enter the intact section 1.5-2 m of the accident well pipe 9, a blocking material 3 is discontinuously thrown into the drill rod 1 from an orifice of the drill rod 1, the water is flushed while the blocking material 3 is prevented from being blocked in the pipe under the action of water, the blocking material 3 is prevented from being blocked in the pipe according to the inner diameter of the joint 4, the inner diameter of the drill rod 1 and the inner diameter of a feed inlet 6 and is communicated with each other, and the blocking material 3 passes through the drill rod 1 and the joint 4, the material reaches a feed port 6 of a blocking material 3 on a salvaging body 2, then the blocking material 3 falls to the upper part of the salvaging body 2 through a discharge port 7 communicated with the feed port 6, the blocking material 3 enters an accident well pipe 9 and the upper part of the salvaging body 2 to be prevented, at the moment, the blocking material 3 is retained in an annular space formed by the outer surface of the upper part of the salvaging body 2 and the accident well pipe 9, the blocking material 3 forms an annular blocking material 3 wedge in the annular space, at the moment, a drill rod 1 is lifted, the accident well pipe 9 and the salvaging body 2 are integrated by the annular blocking material 3 wedge, the blocking material 3 of the lifting drill rod 1 is more and more clamped and more tightly in the annular space, and the salvaging body 2 lifts the accident well pipe 9 together under the action of the annular blocking material 3 wedge;
the lower part of the fishing body 2 is also a conical surface, so that the guiding performance is good, and the success rate of fishing the well pipe is high; according to the different sizes of the threads at the connection part of the drill rod 1 for fishing the accident well pipe 9, only the threads of the joint 4 connected with the drill rod 1 need to be processed and replaced, and according to the different sizes of the threads at the connection part of the guide rod 5, only the threads of the joint 4 connected with the guide rod 5 need to be processed and replaced, and the fishing body 2 does not need to be processed for multiple times, and is convenient to adjust, replace and adapt to use; the larger the lifting force is, the larger the clamping wedge force is when the device is used for fishing, the pulling-out phenomenon cannot occur, the well pipe fishing efficiency is high, on the other hand, the screw thread of the accident well pipe 9 cannot be broken, and the drilling cost is saved; the device has simple structure, convenient processing, recycling and long service life;
the screwing direction of the screw thread of the connector 4 connected with the device is opposite to that of the connecting screw thread of the accident well pipe 9, when the accident well pipe 9 is longer or the clamping force is larger, the accident well pipe 9 can be unscrewed reversely, and the screwing direction of the screw thread of the connector 4 is opposite and cannot be influenced, so that the accident well pipe 9 is taken out in sections, and the safety of fishing the well pipe is greatly improved; if the pipe diameter of the accident well pipe 9 is larger, the fishing body 2 can be processed into a hollow body, and the weight of the whole device can be greatly reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The utility model provides an outer cassette well casing fishing device, includes drilling rod (1), its characterized in that: the fishing device also comprises a fishing body (2), a clamping material (3) and a guide rod (5); the upper end and the lower end of the salvaging body (2) are respectively connected with the drill rod (1) and the guide rod (5) through the joint (4); the joint (4) is of a tubular structure; the diameter of the middle part of the salvaging body (2) is larger than the diameters of the upper part and the lower part of the salvaging body; the upper end of the salvaging body (2) is provided with a feeding hole (6); the upper part of the outer side of the salvaging body (2) is provided with a plurality of discharge holes (7) communicated with the feed holes (6).
2. The external clamp type well pipe fishing device according to claim 1, wherein: the fishing body (2) is in a vase shape.
3. The external-clamping well pipe fishing device according to claim 1, wherein: the blocking material (3) is a steel ball with the diameter of 5-6 mm.
4. The external clamp type well pipe fishing device according to claim 1, wherein: the upper end and the lower end of each joint (4) are provided with threads; the upper end of the salvaging body (2) is in threaded connection with the joint (4) at the upper part, and the upper end of the joint (4) at the upper part is in threaded connection with the drill rod (1); the lower end of the salvaging body (2) is in threaded connection with the joint (4) at the lower part, and the lower end of the joint (4) at the lower part is in threaded connection with the guide rod (5).
5. The external clamp well pipe fishing device according to claim 4, wherein: the thread arranged on the joint (4) is opposite to the thread of the well pipe to be salvaged.
6. The external-clamping well pipe fishing device according to claim 1, wherein: the outer sides of the joints (4) are provided with clamping grooves (8).
7. The external-clamping well pipe fishing device according to claim 1, wherein: the inner diameter of the joint (4), the inner diameter of the drill rod (1) and the inner diameter of the feed inlet (6) are communicated with each other.
8. The external-clamping well pipe fishing device according to claim 1, wherein: the inner diameter of the joint (4), the inner diameter of the drill rod (1) and the inner diameter of the feed inlet (6) are the same.
9. The external clamp type well pipe fishing device according to claim 1, wherein: the upper part of the outer side of the salvaging body (2) is provided with three discharge ports (7) which are communicated with the feed port (6), and the three discharge ports (7) are uniformly distributed along the ring shape; the discharge ports (7) are inclined at 45 degrees along the axial direction.
10. The external-clamping well pipe fishing device according to claim 1, wherein: the lower end of the guide rod (5) is in a shape of a cone with a round tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222495852.5U CN218117731U (en) | 2022-09-21 | 2022-09-21 | External clamping type well pipe fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222495852.5U CN218117731U (en) | 2022-09-21 | 2022-09-21 | External clamping type well pipe fishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218117731U true CN218117731U (en) | 2022-12-23 |
Family
ID=84530222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222495852.5U Active CN218117731U (en) | 2022-09-21 | 2022-09-21 | External clamping type well pipe fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218117731U (en) |
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2022
- 2022-09-21 CN CN202222495852.5U patent/CN218117731U/en active Active
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