CN210977317U - Fracturing string - Google Patents
Fracturing string Download PDFInfo
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- CN210977317U CN210977317U CN201921369936.6U CN201921369936U CN210977317U CN 210977317 U CN210977317 U CN 210977317U CN 201921369936 U CN201921369936 U CN 201921369936U CN 210977317 U CN210977317 U CN 210977317U
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- column body
- tubular column
- ring
- fracturing string
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Abstract
The utility model provides a fracturing string, it includes tubular column body, connecting pipe and cutting ferrule, wherein: at least two first annular buckling parts are arranged on the end face of the first end of the tubular column body at intervals; the outer part of the first end of the connecting pipe is fixedly sleeved with a connecting ring, the connecting ring is provided with a butt joint ring surface and a butt joint ring surface which are oppositely arranged, at least two second annular buckling parts are arranged on the butt joint ring surface at intervals, and a sealing ring is arranged between every two adjacent first annular buckling parts or between every two adjacent second annular buckling parts; the cutting ferrule movable sleeve is located the outside of connecting pipe, and the cutting ferrule has link and the joint end of relative setting, and the joint end is equipped with the ring arch, and the ring is protruding can the butt in the butt anchor ring, the link can the dismouting be connected with the first end of tubular column body. The utility model discloses a pressure pipe column has not only improved the sealing performance between tubular column body and the connecting pipe, effectively prevents the seepage phenomenon, still makes the simple operation of being connected between tubular column body and the connecting pipe swift, has improved work efficiency.
Description
Technical Field
The utility model relates to an oil development technical field, in particular to fracturing string.
Background
In the field of petroleum, fracturing is a method for forming cracks in oil and gas layers by utilizing the action of water power, and is also called hydraulic fracturing. The fracturing truck is used in the fracturing process of oil-gas layer, and can squeeze the high-pressure large-discharge liquid with certain viscosity into oil layer, and after the oil layer is pressed out of many cracks, the propping agent is added to fill the cracks, so that the permeability of the oil-gas layer is improved, and the water injection quantity or oil production quantity is increased. Wherein need use the fracturing string, it is comparatively troublesome to be connected between general connecting pipe and the fracturing string, and the junction leakproofness of connecting pipe and fracturing string is relatively poor, the seepage appears easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can improve sealing performance and equipment convenient fracturing string.
In order to achieve the above object, the utility model provides a fracturing string, it includes:
the tubular column comprises a tubular column body, wherein at least two first annular buckling parts are arranged on the end face of a first end of the tubular column body at intervals;
the connecting ring is fixedly sleeved outside the first end of the connecting pipe, the connecting ring is provided with a butt joint ring surface and a butt joint ring surface which are oppositely arranged, at least two second annular buckling parts are arranged on the butt joint ring surface at intervals, each second annular buckling part can be buckled and matched with each first annular buckling part respectively, a sealing ring is arranged between the end surface of the first end of the pipe column body and the butt joint ring surface, and the sealing ring is positioned between two adjacent first annular buckling parts or between two adjacent second annular buckling parts;
the clamping sleeve is movably sleeved outside the connecting pipe and is provided with a connecting end and a clamping end which are arranged oppositely, an inward-protruding annular protrusion is arranged at the clamping end along the circumferential direction and can abut against the abutting annular surface, and the connecting end can be connected with the first end of the pipe column body in a detachable mode.
The fracturing string comprises a string body, wherein the inner surface of the connecting end is provided with an internal thread, the outer peripheral surface of the first end of the string body is provided with an external thread, and the clamping sleeve is connected with the string body through the thread fit of the internal thread and the external thread.
The fracturing string comprises a string body and is characterized in that two containing cavities are formed in the first end of the string body at intervals along the circumferential direction, anti-rotation mechanisms capable of being connected with the clamping sleeves are arranged in the containing cavities respectively, each anti-rotation mechanism comprises a slide rod capable of moving in the containing cavity along the radial direction of the string body, a spring is arranged between one side of the slide rod, facing the inside of the string body, and the inner surface of the containing cavity, a press rod and a clamping block are connected to one side of the slide rod, facing the outside of the string body, at intervals, the press rod and the clamping block extend out of the string body along the radial direction of the string body, and annular clamping grooves capable of being in clamping fit with the clamping block are formed in the inner surface of the connecting end.
The fracturing string as described above, wherein the extension end of the pressing rod is connected with a push plate.
The fracturing string as described above, wherein the abutting ring surface is provided with an annular receiving groove, the annular receiving groove is provided with a plurality of balls, and each ball can roll in the annular receiving groove and can contact with the annular protrusion.
The fracturing string as described above, wherein the connection end is connected with the first end of the string body by a connecting pin.
The fracturing string as described above, wherein the outer peripheral surface of the connecting pipe is provided with a limiting ring protruding outwards, and the cutting sleeve can move between the limiting ring and the connecting ring.
The fracturing string as described above, wherein the outer circumferential surface of the string body is provided with an anti-corrosion paint layer.
The fracturing string as described above, wherein the connecting pipe and the connecting ring are of an integral structure.
The fracturing string, wherein the first annular buckling part is an annular groove and the second annular buckling part is an annular rib, or the first annular buckling part is an annular rib and the second annular buckling part is an annular groove; the sealing ring is clamped between two adjacent annular convex edges.
Compared with the prior art, the utility model has the advantages as follows:
the utility model discloses a pressure pipe column, through setting up first annular buckling part and second annular buckling part, set up the sealing washer in adjacent two between the first annular buckling part or adjacent two between the second annular buckling part to through being connected between cutting ferrule and the tubular column body, with the inseparable laminating of sealing washer between the terminal surface of the first end of tubular column body and the butt joint anchor ring, not only improved the sealing performance between tubular column body and the connecting pipe, effectively prevented the seepage phenomenon from appearing, still make the simple operation of being connected between tubular column body and the connecting pipe swift, improved work efficiency.
The pressure pipe column of the utility model can effectively prevent the connecting pipe and the pipe column body from loosening due to the loosening of the cutting sleeve by arranging the anti-rotation mechanism, thereby improving the connection stability between the connecting pipe and the pipe column body;
the pressure pipe column of the utility model reduces the friction force between the connecting ring and the cutting sleeve by arranging the ball and the annular containing groove, thereby reducing the loss when the connecting ring and the cutting sleeve are rubbed;
the utility model discloses a pressure tubular column through the surface spraying anticorrosion lacquer at the tubular column body, has improved the corrosion resistance of tubular column body to the life of tubular column body has been improved.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural view of a fracturing string of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is an enlarged schematic view of part B of fig. 2.
The reference numbers illustrate:
1. a tubular column body; 11. a ring groove; 12. an accommodating cavity;
2. a connecting pipe; 21. a connecting ring; 211. butting the ring surfaces; 2111. an annular rib; 212. an abutting annular surface; 2121. an annular accommodating groove; 2122. a ball bearing; 22. a seal ring; 23. a limiting ring;
3. a card sleeve; 31. a connecting end; 311. an annular neck; 32. a clamping end; 321. the ring is convex;
4. an anti-rotation mechanism; 41. a slide bar; 42. a pressing rod; 421. pushing the plate; 43. a clamping block; 44. a spring.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a fracturing string, it includes tubular column body 1, connecting pipe 2 and cutting ferrule 3, wherein:
at least two first annular buckling parts are arranged on the end face of the first end of the tubular column body 1 at intervals, preferably, each first annular buckling part is concentric with the tubular column body 1, and each first annular buckling part is arranged at equal intervals;
the outer fixing sleeve of the first end of the connection pipe 2 is provided with a connection ring 21, that is, the outer diameter of the connection ring 21 is larger than the outer diameter of the connection pipe 2, and the connection ring 21 and the connection pipe 2 are in a relatively static state, the connection ring 21 has a butt-joint ring surface 211 and a butt-joint ring surface 212 which are oppositely arranged, that is, two end surfaces of the connection ring 21 are the butt-joint ring surface 211 and the butt-joint ring surface 212 respectively, the butt-joint ring surface 211 is provided with at least two second annular fastening parts at intervals, each second annular fastening part can be respectively fastened and matched with each first annular fastening part, that is, each second annular fastening part can be correspondingly fastened and connected with each first annular fastening part respectively, that is, the number of the second annular fastening parts is smaller than or equal to the number of the first annular fastening parts, a sealing ring 22 is arranged between the end surface of the first end of the pipe column body 1, thus, after the second annular buckling part is buckled and matched with the first annular buckling part, the sealing ring 22 can be tightly attached between the end surface of the first end of the tubular column body 1 and the butting annular surface 211 so as to ensure the sealing property between the tubular column body 1 and the connecting pipe 2;
the cutting sleeve 3 is movably sleeved outside the connecting pipe 2, namely the cutting sleeve 3 can rotate relative to the connecting pipe 2 and can reciprocate along the axial direction of the connecting pipe 2, the cutting sleeve 3 is provided with a connecting end 31 and a clamping end 32 which are oppositely arranged, the clamping end 32 is provided with an annular protrusion 321 which protrudes inwards along the circumferential direction, the inner diameter of the annular protrusion 321 is larger than the outer diameter of the connecting pipe 2, so that the cutting sleeve 3 can move and rotate, the ring projection 321 can abut against the abutting ring surface 212, namely, the outer diameter of the connecting ring 21 is larger than the inner diameter of the annular protrusion 321, so that the connecting ring 21 can limit the movement of the cutting ferrule 3, and can connect the cutting ferrule 3 with the connecting pipe 2, the connecting end 31 can be detachably connected with the first end of the tubular column body 1, and under the state that the connection end 31 is connected with the first end of the tubular column body 1, the annular protrusion 321 abuts against the abutting annular surface 212, and the sealing ring 22 is tightly attached between the end surface of the first end of the tubular column body 1 and the abutting annular surface 211.
The utility model discloses a pressure pipe column, through setting up first annular buckling part and second annular buckling part, set up sealing washer 22 in adjacent two between the first annular buckling part or adjacent two between the second annular buckling part to through being connected between cutting ferrule 3 and the tubular column body 1, with the inseparable terminal surface of laminating in tubular column body 1 of sealing washer 22 between the first end and the butt joint anchor ring 211, not only improved the sealing performance between tubular column body 1 and the connecting pipe 2, effectively prevented the seepage phenomenon from appearing, still make the simple operation of being connected between tubular column body 1 and the connecting pipe 2 swift, improved work efficiency.
Further, the first annular buckling part is an annular groove 11, the second annular buckling part is an annular rib 2111, or the first annular buckling part is an annular rib 2111, the second annular buckling part is an annular groove 11, the annular rib 2111 can be smoothly inserted into the annular groove 11, and in order to facilitate installation of the sealing ring 22, the sealing ring 22 is clamped between two adjacent annular ribs 2111, namely, two sides of the sealing ring 22 are respectively attached to the opposite surfaces of the two adjacent annular ribs 2111, and when each annular rib 2111 is smoothly inserted into the corresponding annular groove 11, two ends of the sealing ring 22 can be respectively and tightly attached to the end face of the first end of the tubular column body 1 and the butt-joint annular face 211.
In the preferred embodiment shown in fig. 1, two first annular fastening portions are disposed on the end surface of the first end of the tubular column body 1, two second annular fastening portions are disposed on the connecting ring surface, the first annular fastening portions are annular grooves 11, and the second annular fastening portions are annular ribs 2111.
When the connection pipe 2 is connected to the pipe column body 1, the two annular convex ridges 2111 are required to be inserted into the two annular grooves 11, so that the two ends of the sealing ring 22 are respectively tightly attached to the end surface of the first end of the pipe column body 1 and the butt-joint annular surface 211, and then the ferrule 3 is connected to the pipe column body 1, so that the relative position of the connection pipe 2 and the pipe column body 1 is not changed, and the connection reliability is improved.
Further, as shown in fig. 1, the outer peripheral surface of the connecting pipe 2 is provided with a limiting ring 23 protruding outwards, the limiting ring 23 and the connecting ring 21 are arranged at an interval, and the limiting ring 23 is arranged near the first end of the connecting pipe 2, the cutting ferrule 3 can move between the limiting ring 23 and the connecting ring 21, namely, the position of the cutting ferrule 3 is limited by the limiting ring 23 and the connecting ring 21, so that the cutting ferrule 3 is always positioned near the first end of the connecting pipe 2, and the connection between the cutting ferrule 3 and the pipe column body 1 is more convenient.
Further, the outer peripheral surface of tubular column body 1 is equipped with the anti-corrosion paint layer (not shown in the figure), and the anti-corrosion paint layer can improve the corrosion resistance of tubular column body 1 to the life of tubular column body 1 has been improved.
Further, the connecting pipe 2 and the connecting ring 21 are of an integral structure, that is, the connecting pipe 2 and the connecting ring 21 are integrally cast and formed, so as to ensure the reliability of connection between the connecting pipe 2 and the connecting ring 21, of course, the connecting ring 21 may also be clamped to the outside of the connecting pipe 2 or welded to the connecting pipe 2, and will not be described in detail herein.
The utility model discloses an among the embodiment, the internal surface of link 31 is equipped with the internal thread (not shown in the figure), the outer peripheral face of the first end of tubular column body 1 is equipped with the external screw thread (not shown in the figure), screw-thread fit through internal thread and external screw thread, cutting ferrule 3 meets with tubular column body 1, cutting ferrule 3 passes through threaded connection with tubular column body 1 promptly, threaded connection's mode is simple and convenient, and the in-process of the rotatory handing over of external screw thread on internal thread on cutting ferrule 3 and the tubular column body 1, cutting ferrule 3 drives connecting pipe 2 gradually and is close to with tubular column body 1 and closes, can ensure that the both ends of sealing washer 22 closely laminate in the terminal surface and the butt joint anchor ring 211 of the first end of tubular column body 1 respectively, thereby.
Further, as shown in fig. 2 and 3, the first end of the tubular column body 1 is provided with two accommodating cavities 12 at intervals along the circumferential direction, preferably, the two accommodating cavities 12 are arranged at equal intervals, that is, the two accommodating cavities 12 are symmetrically arranged along the central axis of the tubular column body 1, each accommodating cavity 12 is internally provided with an anti-rotation mechanism 4 capable of being connected with the ferrule 3, the anti-rotation mechanism 4 can prevent the ferrule 3 from rotating relative to the tubular column body 1, so as to avoid the occurrence of loose connection caused by the ferrule 3 rotating relative to the tubular column body 1 under the action of external force during use, the anti-rotation mechanism 4 comprises a sliding rod 41 capable of moving along the radial direction of the tubular column body 1 in the accommodating cavity 12, a spring 44 is arranged between one side of the sliding rod 41 facing the interior of the tubular column body 1 and the inner surface of the accommodating cavity 12, that is one end of the spring 44 abuts against one side of the sliding rod 41, the other end of the spring 44 abuts against the surface of the accommodating cavity 12 close to the interior of the tubular column body 1, one side of the sliding rod 41 facing the exterior of the tubular column body 1 is connected with a pressing rod 42 and a clamping block 43 which are arranged at intervals, i.e. the pressing rod 42 and the spring 44 are respectively arranged at two opposite sides of the sliding rod 41, preferably, the pressing rod 42 and the clamping block 43 are respectively arranged at two ends of the sliding rod 41, the clamping block 43 is arranged at a position close to the end part of the tubular column body 1, the spring 44 and the pressing rod 42 are arranged oppositely, the pressing rod 42 and the clamping block 43 both extend outwards along the radial direction of the tubular column body 1, the extending length of the pressing rod 42 is greater than the extending length of the clamping block 43, the inner surface of the connecting end 31 is provided with an annular clamping groove 311 which can be in clamping fit with the clamping block 43, when the clamping sleeve 3 and the tubular column body 1 are connected, the pressing rod 42 first is required to push the sliding rod 41 to move towards the interior of the tubular column Then, the two annular convex ridges 2111 are respectively and correspondingly inserted into the two annular grooves 11, so that the two ends of the sealing ring 22 are respectively and tightly attached to the end surface of the first end of the tubular column body 1 and the abutting ring surface 211, then the cutting sleeve 3 is rotated to make the cutting sleeve 3 and the tubular column body 1 rotatably connected, when the cutting sleeve 3 is rotated to be incapable of rotating, the pressing rod 42 is loosened, under the elastic force action of the spring 44, the sliding rod 41 is reset and drives the clamping block 43 to reset, the clamping block 43 is clamped into the annular clamping groove 311 to fix the cutting sleeve 3, so as to prevent the loosening of the cutting sleeve 3 and the connection between the connecting pipe 2 and the tubular column body 1 from being loosened, improve the connection stability between the connecting pipe 2 and the tubular column body 1, when the connecting pipe 2 and the tubular column body 1 need to be separated, the pressing rod 42 is firstly pressed, so that the pressing rod 42 pushes the sliding rod 41 to move towards the inside of the tubular column body 1, the movement of the sliding rod 41 can extrude, can reverse rotation cutting ferrule 3, can make cutting ferrule 3 and tubular column body 1 separation.
Further, as shown in fig. 2 and 3, a push plate 421 is connected to the extended end of the pressing rod 42, and the push plate 421 can increase the contact area of the pressing rod 42, thereby making the operation of pressing the pressing rod 42 simple and convenient.
Further, as shown in fig. 2, an annular receiving groove 2121 is provided on the abutting annular surface 212, a plurality of balls 2122 are received in the annular receiving groove 2121, each ball 2122 can roll in the annular receiving groove 2121 and can contact with the annular protrusion 321, when the coupling pipe 2 is fixedly connected to the column body 1 by the sleeve 3, since the sleeve 3 is screwed to the column body 1, the sleeve 3 needs to be rotated, the annular protrusion 321 of the sleeve 3 can be attached to the abutting annular surface 212 of the coupling ring 21 to generate sliding friction, and by providing the balls 2122 and the annular receiving groove 2121, the sliding friction force between the annular protrusion 321 and the abutting annular surface 212 is reduced, thereby reducing the loss when the coupling ring 21 and the sleeve 3 rub.
The utility model discloses an in another kind of embodiment, link 31 is connected with the first end of tubular column body 1 through the connecting pin, in cyclic annular bead 2111 inserts annular 11, and during the both ends of sealing washer 22 closely laminated respectively in the terminal surface of the first end of tubular column body 1 and butt joint anchor ring 211, meets link 31 and the first end of tubular column body 1 through the connecting pin to make connecting pipe 2 meet with tubular column body 1 through cutting ferrule 3.
To sum up, the utility model discloses a pressure tubular column through setting up first annular buckling part and second annular buckling part, sets up the sealing washer in adjacent two between the first annular buckling part or adjacent two between the second annular buckling part to through being connected between cutting ferrule and the tubular column body, with inseparable laminating of sealing washer between the terminal surface of the first end of tubular column body and the butt joint anchor ring, not only improved the sealing performance between tubular column body and the connecting pipe, effectively prevented the seepage phenomenon from appearing, still make the simple operation of being connected between tubular column body and the connecting pipe swift, improved work efficiency.
The pressure pipe column of the utility model can effectively prevent the connecting pipe and the pipe column body from loosening due to the loosening of the cutting sleeve by arranging the anti-rotation mechanism, thereby improving the connection stability between the connecting pipe and the pipe column body;
the pressure pipe column of the utility model reduces the friction force between the connecting ring and the cutting sleeve by arranging the ball and the annular containing groove, thereby reducing the loss when the connecting ring and the cutting sleeve are rubbed;
the utility model discloses a pressure tubular column through the surface spraying anticorrosion lacquer at the tubular column body, has improved the corrosion resistance of tubular column body to the life of tubular column body has been improved.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.
Claims (10)
1. A fracturing string, comprising:
the tubular column comprises a tubular column body, wherein at least two first annular buckling parts are arranged on the end face of a first end of the tubular column body at intervals;
the connecting ring is fixedly sleeved outside the first end of the connecting pipe, the connecting ring is provided with a butt joint ring surface and a butt joint ring surface which are oppositely arranged, at least two second annular buckling parts are arranged on the butt joint ring surface at intervals, each second annular buckling part can be buckled and matched with each first annular buckling part respectively, a sealing ring is arranged between the end surface of the first end of the pipe column body and the butt joint ring surface, and the sealing ring is positioned between two adjacent first annular buckling parts or between two adjacent second annular buckling parts;
the clamping sleeve is movably sleeved outside the connecting pipe and is provided with a connecting end and a clamping end which are arranged oppositely, an inward-protruding annular protrusion is arranged at the clamping end along the circumferential direction and can abut against the abutting annular surface, and the connecting end can be connected with the first end of the pipe column body in a detachable mode.
2. The fracturing string of claim 1,
the inner surface of the connecting end is provided with an internal thread, the outer peripheral surface of the first end of the tubular column body is provided with an external thread, and the clamping sleeve is connected with the tubular column body through the thread fit of the internal thread and the external thread.
3. The fracturing string of claim 2,
the first end of tubular column body is equipped with two holding chambeies along the circumference interval, each the holding intracavity be equipped with respectively can with the cutting ferrule meets prevent slewing mechanism, prevent slewing mechanism including can the holding intracavity is followed the radial movement's of tubular column body slide bar, the orientation of slide bar one side of the inside of tubular column body with be equipped with the spring between the internal surface in holding chamber, the orientation of slide bar one side of the outside of tubular column body is connected with the press pole and the fixture block that the interval set up, press the pole with the fixture block is all followed the radial outside extension of tubular column body the tubular column body, the internal surface of link be equipped with can with fixture block joint complex ring groove.
4. The fracturing string of claim 3,
the extending end of the pressing rod is connected with a push plate.
5. The fracturing string of claim 2,
the abutting ring surface is provided with an annular containing groove, a plurality of balls are contained in the annular containing groove, and each ball can roll in the annular containing groove and can be in contact with the annular protrusion.
6. The fracturing string of claim 1,
the connecting end is connected with the first end of the tubular column body through a connecting pin.
7. The fracturing string of claim 1,
the outer peripheral surface of the connecting pipe is provided with a limiting ring protruding outwards, and the clamping sleeve can move between the limiting ring and the connecting ring.
8. The fracturing string of claim 1,
and an anti-corrosion paint layer is arranged on the peripheral surface of the pipe column body.
9. The fracturing string of claim 1,
the connecting pipe and the connecting ring are of an integrated structure.
10. The fracturing string of any of claims 1 to 9,
the first annular buckling part is an annular groove, the second annular buckling part is an annular convex edge, or the first annular buckling part is an annular convex edge, and the second annular buckling part is an annular groove;
the sealing ring is clamped between two adjacent annular convex edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369936.6U CN210977317U (en) | 2019-08-22 | 2019-08-22 | Fracturing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369936.6U CN210977317U (en) | 2019-08-22 | 2019-08-22 | Fracturing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210977317U true CN210977317U (en) | 2020-07-10 |
Family
ID=71416231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921369936.6U Active CN210977317U (en) | 2019-08-22 | 2019-08-22 | Fracturing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210977317U (en) |
-
2019
- 2019-08-22 CN CN201921369936.6U patent/CN210977317U/en active Active
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