CN218716679U

CN218716679U - Integrated fishable drillable bridge plug

Info

Publication number: CN218716679U
Application number: CN202222985557.8U
Authority: CN
Inventors: 柳明杨
Original assignee: Jiutian Petroleum Technology Liaoning Co ltd
Current assignee: Jiutian Petroleum Technology Liaoning Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The utility model belongs to the technical field of the bridging plug, especially, for an integration can drag for and bore bridging plug, including the trunk line, the trunk line is the cylinder structure, the middle part activity gomphosis of trunk line inner chamber has the sliding plug guide post, the head end fixedly connected with rectangle frustum of sliding plug guide post, the tail end fixedly connected with annular frame of sliding plug guide post, the interior edge of annular frame tail end is equipped with the shackle, the center of rectangle frustum and sliding plug guide post is equipped with the perforation. The utility model has the advantages that under the action of axial force, the side of the rectangular frustum presses and contacts the cylindrical ejector rod, so that the main pipeline is continuously fixed with the well wall, and meanwhile, the cylindrical ejector rod also limits the rectangular frustum to rotate along with the drill bit, so that the drill bit can quickly drill holes by taking the soft matrix column as a center hole; under the thrust action, the elastic outer clamping hook is embedded into the annular frame and mutually hooked with the barb ring, and then the extractor moves from the head end to the tail end of the main pipeline to pull out the bridge plug, so that the bridge plug is convenient to recover and adjust the position.

Description

Integrated fishable drillable bridge plug

Technical Field

The utility model relates to a bridging plug technical field specifically is an integration can drag for and bore bridging plug.

Background

Bridge plugs are common tools used downhole in oil fields and are typically run downhole by a drill pipe or wireline to a set location and then secured at that location. When the existing bridge plug is plugged in a hole, the existing bridge plug needs to be fished out or drilled, when the existing bridge plug is drilled, the inner component of the existing bridge plug can rotate along with a drill bit, so that the drill bit idles to do useless work, even the drill bit is burnt or clamped due to frictional heat generation, and the existing bridge plug needs to be taken out because no clamping mechanism can not be taken out, so that the problem can be solved by the aid of the integrated fishable and drillable bridge plug.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an integration can drag for and bore bridging plug has solved the problem that proposes among the above-mentioned background art.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

an integrated fishable drillable bridge plug comprises a main pipeline, wherein the main pipeline is of a cylindrical structure, a sliding plug guide post is movably embedded in the middle of an inner cavity of the main pipeline, a rectangular frustum is fixedly connected to the head end of the sliding plug guide post, an annular frame is fixedly connected to the tail end of the sliding plug guide post, a barb ring is arranged on the inner edge of the tail end of the annular frame, a through hole is formed in the centers of the rectangular frustum and the sliding plug guide post, a soft matrix post is embedded in the through hole and connected with a take-out device, a bolt middle hole is formed in the center hole of the take-out device, an elastic outer hook is fixedly arranged on the edge of the head end of the take-out device, the top end of the elastic outer hook is a wedge-shaped chamfer, the elastic outer hook is embedded in the annular frame and mutually hooked with the barb ring, the utility model discloses a three-layer anti-drop device, including trunk line inner chamber, three-layer circular window has been seted up to the front end equipartition of trunk line inner chamber, the three-layer the gomphosis has first cylinder ejector pin, second cylinder ejector pin and third cylinder ejector pin in proper order in the circular window, and the bottom of first cylinder ejector pin, second cylinder ejector pin and third cylinder ejector pin all is fixed with the anticreep cap, the anticreep cap is located the inboard of circular window, the surface press of rectangle frustum touches the bottom surface of anticreep cap, the anticreep cap with it has dish-shaped shell fragment to alternate between the inner wall of trunk line, the hole activity gomphosis of trunk line head end has the end cover chock, the center fixedly connected with bolt post of end cover chock, the center of rectangle frustum head end is equipped with central screw, and the central screw is closed to the post spiral shell is closed, the hole of trunk line head end is fixed with main fender ring, main fender ring is located between circular window and the end cover chock.

Furthermore, the lengths of the first cylindrical ejector rod, the second cylindrical ejector rod and the third cylindrical ejector rod are sequentially increased from the bottom end to the top end of the rectangular frustum.

Further, the inner hole of the tail end of the main pipeline is provided with a connecting internal thread.

Further, the soft matrix column is made of a rubber material or a plastic material or an bakelite material.

Further, the bottom surface of the anti-falling cap is a circular arc surface.

Further, the inner diameter of the hole in the bolt is twice the outer diameter of the soft matrix column.

(III) advantageous effects

Compared with the prior art, the utility model provides an integration can drag for and bore bridging plug possesses following beneficial effect:

the utility model has the advantages that under the action of axial force, the side of the rectangular frustum presses and contacts the cylindrical ejector rod, so that the main pipeline is continuously fixed with the well wall, and meanwhile, the cylindrical ejector rod also limits the rectangular frustum to rotate along with the drill bit, so that the drill bit can quickly drill holes by taking the soft matrix column as a center hole; under the thrust action, the elastic outer clamping hook is embedded into the annular frame and mutually hooked with the barb ring, and then the extractor moves from the head end to the tail end of the main pipeline to pull out the bridge plug, so that the bridge plug is convenient to recover and adjust the position.

Drawings

FIG. 1 is a schematic partial sectional view of the main structure of the present invention;

FIG. 2 is a schematic side sectional view of the main structure of the present invention;

fig. 3 is a schematic view of the extractor of the present invention.

In the figure: 1. a main pipeline; 2. a sliding plug guide post; 3. a rectangular frustum; 4. an annular rim; 5. a reversed hook ring; 6. a soft matrix column; 7. a take-out device; 8. a bolt center hole; 9. an elastic outer hook; 10. a circular window; 11. a first cylindrical ejector rod; 12. a second cylindrical ejector rod; 13. a third cylindrical mandril; 14. an anti-drop cap; 15. a disk-shaped spring plate; 16. an end cap plug; 17. a bolt column; 18. a central screw hole; 19. a primary retainer ring; 20. and connecting the internal threads.

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.

Examples

As shown in figures 1, 2 and 3, the integrated fishable drillable bridge plug provided by one embodiment of the utility model comprises a main pipeline 1, the main pipeline 1 is a cylinder structure, a sliding plug guide post 2 is movably embedded in the middle of an inner cavity of the main pipeline 1, a rectangular frustum 3 is fixedly connected with the head end of the sliding plug guide post 2, an annular frame 4 is fixedly connected with the tail end of the sliding plug guide post 2, a barb ring 5 is arranged on the inner edge of the tail end of the annular frame 4, a perforation is arranged at the centers of the rectangular frustum 3 and the sliding plug guide post 2, a soft matrix post 6 is embedded and connected in the perforation, a picker 7 is movably inserted and inserted in the tail end of the inner cavity of the main pipeline 1, a bolt middle hole 8 is arranged in the center hole of the picker 7, an elastic outer hook 9 is fixedly arranged at the edge of the head end of the picker 7, the top end of the elastic outer hook 9 is a wedge-shaped chamfer, the elastic outer hook 9 is embedded in the annular frame 4 and mutually hooked with the barb ring 5, a three-layer circular window 10 is equally divided at the front end of the inner cavity of the main pipeline 1, a first post rod 11 is sequentially embedded in the three-layer circular window 10, second cylinder ejector pin 12 and third cylinder ejector pin 13, first cylinder ejector pin 11, the bottom of second cylinder ejector pin 12 and third cylinder ejector pin 13 all is fixed with anticreep cap 14, anticreep cap 14 is located the inboard of circular window 10, the bottom surface of anticreep cap 14 is pressed and contacted to the surface of rectangle frustum 3, disk-shaped shell fragment 15 has been alternate between the inner wall of anticreep cap 14 and trunk line 1, the hole activity gomphosis of trunk line 1 head end has end cover chock 16, the center fixedly connected with bolt post 17 of end cover chock 16, the center of rectangle frustum 3 head end is equipped with central screw 18, bolt post 17 spiral shell closes central screw 18, the hole of trunk line 1 head end is fixed with main fender ring 19, main fender ring 19 is located between circular window 10 and end cover chock 16.

When the bridging plug is used for fixing the tension of a well wall, the sliding plug guide post 2 and the rectangular frustum 3 are pushed to move from the tail end to the head end of the main pipeline 1, and the side pressure of the rectangular frustum 3 is in press contact with the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13, so that the sliding plug guide post, the second cylindrical ejector rod and the third cylindrical ejector rod extend out of the outer wall of the main pipeline 1 through the circular window 10 to collide with the inner wall of a drilled well, and the function of the bridging plug is realized; when the bridge plug does not enter the inner wall of the well with the set depth, the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13 retract into the main pipeline 1 under the elastic force of the disc-shaped elastic sheet 15, so that the main pipeline 1 can smoothly pass through the wall of the well.

When the bridge plug is taken out, the extractor 7 at the tail end moves from the tail end to the head end of the main pipeline 1 under the action of thrust until the elastic outer clamping hook 9 is embedded into the annular frame 4 and mutually hooked with the inverted hook ring 5, then the extractor 7 moves from the head end to the tail end of the main pipeline 1 to pull out the sliding plug guide post 2 and the rectangular frustum 3, at the moment, the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13 retract without being subjected to axial force, meanwhile, the rectangular frustum 3 exerts pulling force on the end cover plug head 16 through the central screw hole 18 and the bolt column 17, the end cover plug head 16 transmits the pulling force to the main pipeline 1 through the main retaining ring 19, and then the main pipeline 1 is pulled out together;

when drilling, under the action of axial force, the side pressure of the rectangular frustum 3 touches the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13, so that the main pipeline 1 is continuously fixed with the well wall and cannot rotate along with the drill bit, and meanwhile, the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13 also limit the rectangular frustum 3 to rotate along with the drill bit, so that the drill bit can drill through the soft matrix column 6, or the soft matrix column 6 is used as a center hole for quickly drilling.

As shown in fig. 2, in some embodiments, the lengths of the first cylindrical mandril 11, the second cylindrical mandril 12 and the third cylindrical mandril 13 are increased from the bottom end to the top end of the rectangular frustum 3.

Moreover, the length increasing amplitude of the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13 is in direct proportion to the taper of the rectangular frustum 3, so that the heights of the first cylindrical ejector rod 11, the second cylindrical ejector rod 12 and the third cylindrical ejector rod 13 protruding out of the surface of the main pipeline 1 are equal, and the main pipeline can conveniently run in a well wall.

As shown in fig. 2, in some embodiments, the internal bore of the trailing end of the main conduit 1 is provided with connecting internal threads 20.

The connecting internal thread 20 is used for connecting a drill rod or a traction rod so as to convey the main body of the utility model to the set wellhead depth.

As shown in fig. 2, in some embodiments, the flexible matrix column 6 is made of a rubber material or a plastic material or an bakelite material.

The rubber material, the plastic material and the bakelite material have good processability and sealing property, can keep the sealing property in a wellhead at high temperature and high pressure, and can be used as a guide pipe when drilling is convenient.

As shown in fig. 2, in some embodiments, the bottom surface of the anti-release cap 14 is a circular arc surface.

Therefore, the side of the rectangular frustum 3 can smoothly press and contact the first cylindrical mandril 11, the second cylindrical mandril 12 and the third cylindrical mandril 13 through the anti-falling cap 14, and the axial force is transferred to the radial force.

As shown in fig. 2, in some embodiments, the inner diameter of the bore 8 in the bolt is twice the outer diameter of the flexible matrix column 6.

Therefore, when the extractor 7 is connected to the plunger guide 2, the drill can smoothly penetrate through the bolt center hole 8 to drill the soft matrix column 6, the plunger guide 2, the rectangular frustum 3, and the end cap plug 16.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an integration can drag for and can bore bridging plug, includes trunk line (1), its characterized in that: the main pipeline (1) is of a cylinder structure, a sliding plug guide post (2) is movably embedded in the middle of an inner cavity of the main pipeline (1), a rectangular frustum (3) is fixedly connected to the head end of the sliding plug guide post (2), an annular frame (4) is fixedly connected to the tail end of the sliding plug guide post (2), a barb ring (5) is arranged on the inner edge of the tail end of the annular frame (4), a perforation is arranged at the centers of the rectangular frustum (3) and the sliding plug guide post (2), a soft matrix post (6) is connected to the perforation in an embedded mode, a extractor (7) is movably inserted into the tail end of the inner cavity of the main pipeline (1), a bolt middle hole (8) is formed in a center hole of the extractor (7), an elastic outer clamping hook (9) is fixedly arranged on the edge of the head end of the extractor (7), the top end of the elastic outer clamping hook (9) is a wedge-shaped chamfer angle, the elastic outer clamping hook (9) is embedded into the annular frame (4) and mutually hooked with the barb ring (5), three layers of circular windows (10), a first cylindrical window (11) and a third cylindrical ejector rod (12) and a third cylindrical ejector rod (13) are sequentially fixed in the cylindrical window (13), anticreep cap (14) are located the inboard of circular window (10), the surface pressure of rectangle frustum (3) touches the bottom surface of anticreep cap (14), anticreep cap (14) with dish-shaped shell fragment (15) have been alternate between the inner wall of trunk line (1), the hole activity gomphosis of trunk line (1) head end has end cover chock plug (16), the central fixedly connected with bolt post (17) of end cover chock plug (16), the center of rectangle frustum (3) head end is equipped with central screw hole (18), and bolt post (17) spiral shell closes central screw hole (18), the hole of trunk line (1) head end is fixed with main fender ring (19), main fender ring (19) are located between circular window (10) and end cover chock plug (16).

2. The integrated salvageable drillable bridge plug of claim 1, wherein: the lengths of the first cylindrical ejector rod (11), the second cylindrical ejector rod (12) and the third cylindrical ejector rod (13) are sequentially increased from the bottom end to the top end of the rectangular frustum (3).

3. The integrated salvageable drillable bridge plug of claim 1, wherein: the inner hole at the tail end of the main pipeline (1) is provided with a connecting internal thread (20).

4. The integrated salvageable drillable bridge plug of claim 1, wherein: the soft matrix column (6) is made of rubber materials or plastic materials or bakelite materials.

5. The integrated salvageable drillable bridge plug of claim 1, wherein: the bottom surface of the anti-falling cap (14) is a circular arc surface.

6. The integrated salvageable drillable bridge plug of claim 1, wherein: the inner diameter of the hole (8) in the bolt is twice of the outer diameter of the soft matrix column (6).