CN214944072U - Sleeve tie-back device - Google Patents
Sleeve tie-back device Download PDFInfo
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- CN214944072U CN214944072U CN202120407109.2U CN202120407109U CN214944072U CN 214944072 U CN214944072 U CN 214944072U CN 202120407109 U CN202120407109 U CN 202120407109U CN 214944072 U CN214944072 U CN 214944072U
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Abstract
The application provides a casing tie-back device belongs to oil development technical field. This application sets up to the circular conical surface through the direction section with the guide shoe, make the fish top can follow the big footpath end of guide shoe (the one end that is close to the direction section in the guide shoe) leading-in, thereby lead to the fish top, keep the fish top placed in the middle, and the back of leading because the existence of direction section on the guide shoe, can remove the left end to the male joint gradually, and draw the sleeve pipe and carry out the tieback in the guide shoe, the butt joint operation on the fish top of being convenient for, make the butt joint swiftly convenient, and simultaneously, utilize the purge hole to the fish top, sleeve pipe and male joint wash, keep the fish top, the cleanliness of sleeve pipe and male joint, and can reduce the emergence of the wrong knot of the in-process and detain the phenomenon partially.
Description
Technical Field
The application relates to the technical field of oil exploitation, in particular to a casing tie-back device.
Background
As the oil exploitation enters the middle and later stages, the casing of many production wells can be damaged due to the frequent operation, such as deformation, leakage, and failure of the casing, and the causes of the phenomena include: formation stress effects, corrosion of casing by formation fluids or well fluids, and the like. The wear damaged casing may not meet production requirements and may result in forced shut-in. In order to recover the production, the casing near or above the deformation, leakage or fault point can be taken out and a new casing is put in, and then a tieback device is used for tieback of the new and old casing so as to recover the productivity of the production well.
At present, the tieback of a sleeve is all provided with the tieback device, the interior of the tieback device is generally connected in a sealing mode through a rubber cylinder or lead, the service life of the tieback device can be directly influenced by the properties of the rubber or lead, and the service life of the tieback device is short. In order to improve the service life of the tie-back device, the sleeve is generally connected in a buckling mode in the process of connecting the sleeves in a buckling mode, but the problem that the fish tops of the lower parts are not centered often exists, and the problem that the fish tops are not centered is usually solved by welding a guide cylinder, but the method is not beneficial to buckling after the fish tops are guided; meanwhile, cement needs to be poured into the underground in the well cementation process, and the poured cement can be remained between the floating hoop and the casing pipe in a large amount, so that the cleanliness of the tie-back device cannot be guaranteed, and the problem of wrong buckling and offset buckling is easy to occur.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a sleeve pipe tieback device, can keep self and sheathed tube cleanliness, reduce the wrong knot of fish top and detain the condition partially. The casing tie-back device is as follows:
a casing tie-back device, comprising: the guide shoe is sleeved outside the male connector;
the guide shoe is cylindrical, the inner wall of the guide shoe comprises a connecting section and a guiding section, the connecting section is used for connecting the guide shoe and the male connector, the curved surface formed by the guiding section is a conical surface, the size of one end, connected with the connecting section, of the guiding section is smaller than that of the other end of the guiding section, and the guiding section is used for guiding the fish top;
a plurality of cleaning holes are formed in the guide shoe, penetrate through the cylindrical wall of the guide shoe and are used for cleaning the casing tie-back device;
the male joint is cylindrical, one end of the male joint is connected with the connecting section of the guide shoe, one end of the male joint is also used for connecting a sleeve, and the other end of the male joint is connected with the fish top.
In a possible embodiment, a first thread is arranged on the inner wall of the one end of the male connector, and the one end of the male connector is in threaded connection with the casing through the first thread;
and a second thread is arranged on the inner wall of the other end of the male connector, and the other end of the male connector is in threaded connection with the fish top through the second thread.
In a possible embodiment, the curved surface formed by the first thread and the second thread is a conical surface.
In a possible embodiment, the inner wall of the one end of the male connector is provided with a transition section, the size of which is smaller than or equal to the size of the connecting section.
In a possible embodiment, the curved surface formed by the guide section is a conical surface with a conical angle of 3 ° to 5 °.
In a possible embodiment, the plurality of cleaning openings are formed in the guide shoe on the cylindrical wall of the guide section.
In a possible embodiment, the distance between the center line of the plurality of cleaning holes and the end of the guide shoe connected with the male connector is 80-90 mm.
In one possible embodiment, the plurality of cleaning holes are evenly distributed along the circumferential direction of the guide shoe.
In a possible embodiment, the connecting section is provided with an internal thread, and the outer wall of the male connector is provided with an external thread matched with the internal thread.
In a possible embodiment, the guide shoe and the male joint are both made of alloy structural steel.
The beneficial effect of the sleeve pipe tieback device that this application embodiment provided includes at least:
set up to the circular conical surface through the direction section with the guide shoe, make the fish top can follow the big footpath end of guide shoe (the one end that is close to the direction section in the guide shoe) leading-in, thereby lead to the fish top, keep the fish top placed in the middle, and the back of leading because the existence of direction section on the guide shoe, can remove the left end to the male joint gradually, and draw the sleeve pipe and carry out the tieback in the guide shoe, the make-up operation on fish top of being convenient for, make the make-up swift convenient, and simultaneously, utilize the washing pore pair fish top, sleeve pipe and male joint wash, keep the fish top, the cleanliness of sleeve pipe and male joint, and can reduce the emergence of the wrong knot of make-up in-process and detain the phenomenon partially.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a casing tie-back device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a casing tie-back device according to an embodiment of the present application.
Wherein the reference numerals in the drawings are explained as follows:
1 guide shoe, 2 male connectors, 3 connecting sections, 4 guiding sections, 5 cleaning holes,
6 first thread, 7 second thread.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a casing tie-back device according to an embodiment of the present application. Referring to fig. 1, the embodiment provides the casing tie-back device including: the guide shoe comprises a guide shoe 1 and a male connector 2, wherein the guide shoe 1 is sleeved outside the male connector 2, namely the male connector 2 is arranged inside the guide shoe 1. Each structure is described in detail below:
This guide 1 is cylindricly, and the inner wall of this guide 1 includes linkage segment 3 and direction section 4, and this linkage segment 3 is used for connecting this guide 1 and this male joint 2, and this direction section 4 is used for leading the fish top.
In other words, the guide shoe 1 is of a cylindrical structure, and the inner wall of the guide shoe 1 can be divided into two parts, one part is the connecting section 3, and the other part is the guide section 4. Optionally, the male connector 2 is connected to the guide shoe 1 by a connecting section 3, and the fish head is guided via a guide section 4 and extends into the casing tieback.
In some embodiments, the guide section 4 is not a straight cylinder with the same caliber at both ends, but can be configured in a cylinder structure with different calibers at both ends. That is, the curved surface formed by the guiding section 4 is a conical surface, the dimension of one end of the guiding section 4 connected with the connecting section 3 is smaller than that of the other end, as shown in fig. 1, the left end of the guiding section 4 is connected with the connecting section 3, that is, the end close to the connecting section 3, the right end of the guiding section 4 is the other end far away from the connecting section 3, and the dimension of the left end of the guiding section 4 is smaller than that of the right end of the guiding section 4. For example, the left end of the guide section 4 may be visually referred to as a "small diameter end", and the right end of the guide section 4 may be visually referred to as a "large diameter end".
In some embodiments, the curved surface formed by the guide section 4 is a conical surface with a conical angle of 3 ° to 5 °, but should not form an angle limitation to the conical angle of the conical surface, and the conical angle of the conical surface may be less than 3 ° or greater than 5 °, which is not limited in the embodiments of the present application.
In the process, the curved surface formed by the guide section 4 is set to be a conical surface, so that the fish top can be conveniently and smoothly guided into the guide shoe 1, the fish top is guided into the guide shoe 1 from the large-diameter end of the guide shoe, and the guide section 4 can guide the fish top and keep the fish top centered.
In some embodiments, the guide shoe 1 may further have a plurality of cleaning holes 5, the plurality of cleaning holes 5 penetrate through the cylindrical wall of the guide shoe 1, and the plurality of cleaning holes 5 are used for cleaning the casing tie-back device. Optionally, the plurality of cleaning holes 5 are formed in the cylinder wall where the connecting section 3 is located, or the plurality of cleaning holes 5 are formed in the cylinder wall where the guiding section 4 is located, or a part of the plurality of cleaning holes 5 is formed in the cylinder wall where the connecting section 3 is located, and another part of the plurality of cleaning holes is formed in the cylinder wall where the guiding section 4 is located, which is not limited in the embodiment of the present application.
In some embodiments, the plurality of cleaning holes 5 are all circular through holes, or the plurality of cleaning holes 5 are all square through holes, or the plurality of cleaning holes 5 are through holes with different shapes, so as to facilitate cleaning of the casing tie-back device, the fish top and the casing.
In an exemplary embodiment, the plurality of cleaning holes 5 are provided in the guide shoe 1 on the cylindrical wall of the guide section 4, which prevents the guide shoe 1 from being connected to the male connector 2 loosely due to the cleaning holes.
In some embodiments, the distance between the centerline of the plurality of cleaning holes 5 and the end of the guide shoe 1 connected to the male connector 2 is 80-90 mm. That is, the distance between the center line of the plurality of cleaning holes 5 and the left end of the guide shoe 1 is 80 to 90 mm.
In other embodiments, the distance between the centerline of the plurality of cleaning holes 5 and the other end of the guide shoe 1 away from the male connector 2 is 80-90 mm. That is, the distance between the center line of the plurality of cleaning holes 5 and the right end of the guide shoe 1 is 80 to 90 mm.
In some embodiments, the plurality of cleaning holes 5 are evenly distributed along the circumferential direction of the guide shoe 1, and by evenly distributing the cleaning holes along the radial direction of the guide shoe 1, the cleaning of the casing tie-back device, the fish top and the casing can be more even and thorough, which is beneficial to maintaining good cleanliness.
In some embodiments, the number of the plurality of cleaning holes 5 is at least two, for example, two cleaning holes are formed in the cylindrical wall of the guide shoe 1, or for example, four cleaning holes are formed in the cylindrical wall of the guide shoe 1, and the number of the cleaning holes is not particularly limited in the embodiments of the present application.
In an exemplary embodiment, four cleaning holes are formed in the cylindrical wall where the guide section 4 of the guide shoe 1 is located, the four cleaning holes are uniformly distributed in the circumferential direction of the guide shoe 1, and the distances between the center lines of the four cleaning holes and the end part of the guide shoe 1 are 80-90 mm.
In the process, the fish tops, the sleeves and the male connectors 2 can be washed by the aid of the cleaning holes 5, cleanliness of the fish tops, the sleeves and the male connectors 2 is kept, and the phenomenon of wrong buckling and biased buckling in the buckling process is reduced.
In some embodiments, the connecting section 3 is provided with an internal thread, and correspondingly, the outer wall of the male connector 2 is provided with an external thread matched with the internal thread. In this case, the guide 1 is screwed to the pin 2 via the connecting section 3, i.e. the pin 2 is screwed to the connecting section 3 of the guide 1.
Optionally, the minor diameter of the internal thread is larger than the diameter of the minor diameter end of the connecting section 3, as shown in fig. 1; alternatively, the major diameter of the female thread is smaller than the diameter of the minor diameter end of the connecting section 3, as shown in fig. 2, and the male thread is located at the middle of the outer wall of the male connector 2.
Because linkage segment 3 is located the inner wall of guide 1, through set up the internal thread on linkage segment 3 at the inner wall of guide 1 to set up corresponding external screw thread on the outside of male joint 2, can make guide 1 cover establish in the outside of male joint 2 and fasten mutually through the screw thread, thereby promoted the tightness that guide 1 and male joint 2 link to each other.
In some embodiments, the material of the guide shoe 1 is structural alloy steel, for example, the structural alloy steel is 40CrMnMo (a high-strength medium carbon quenched and tempered manganese steel), which has high strength, high elasticity and wear resistance, and has high hardenability, or the guide shoe 1 may be made of other materials, and the material of the guide shoe 1 is not specifically limited in the embodiments of the present application.
(II) Male joint 2
The male connector 2 is cylindrical, one end of the male connector 2 is connected with the connecting section 3 of the guide shoe 1, the other end of the male connector 2 is also used for connecting a sleeve, and the other end of the male connector 2 is connected with a fish top.
In other words, the male connector 2 is a cylindrical structure, one end of the male connector 2 is used for connecting the guide shoe 1 and the sleeve, and the other end of the male connector 2 is used for connecting the fish top. As shown in fig. 1, the right end of the male connector 2 is the end close to the guide shoe 1 and connected with the guide shoe 1, and the left end of the male connector 2 is the other end far from the guide shoe 1 and connected with the fish top.
In some embodiments, the inner wall of the pin 2 is threaded with the fish head, the inner wall of the pin 2 is threaded with the casing, and the outer wall of the pin 2 is threaded with the connecting section 3 of the guide shoe 1.
In a possible embodiment, the threaded connection of the internal wall of the male connector 2 with the casing means: the inner wall of the one end of the male connector 2 (i.e. the right end close to the guide section 4) is provided with a first thread 6, and the one end of the male connector 2 is in threaded connection with the casing through the first thread 6.
In a possible embodiment, the inner wall of the male connector 2 is connected with the fish top thread, that is, the inner wall of the other end (i.e., the left end far away from the guide section 4) of the male connector 2 is provided with a second thread 7, and the other end of the male connector 2 is connected with the fish top thread through the second thread 7.
In a possible embodiment, the threaded connection of the external wall of the male connector 2 to the connecting section 3 of the guide shoe 1 means: be provided with the external screw thread on this male joint 2's the outer wall, be provided with the internal thread on the linkage segment 3 of guide shoe 1, internal thread and external screw thread phase-match to make male joint 2's the outer wall can with 3 threaded connection of linkage segment of guide shoe 1.
In some embodiments, the curved surfaces of the first thread 6 and the second thread 7 are conical surfaces. In other words, the curved surface of the first thread 6 having all nominal diameters is a conical surface, and the curved surface of the second thread 7 having all nominal diameters is a conical surface.
In the process, the curved surface formed by the first thread 6 and the second thread 7 is set to be a conical surface, so that after the fish top enters the guide shoe 1 through the guide section 4, the butt-joint operation of the fish top is greatly facilitated due to the existence of the three conical surfaces of the guide section 4, the first thread 6 and the second thread 7 of the guide shoe 1, and the butt-joint is convenient and fast.
Alternatively, since the first thread 6 and the second thread 7 are both provided on the inner wall of the male connector 2, the inner wall of the one end of the male connector 2 (i.e., the right end near the connecting section 3) may also be provided with a transition section having a size smaller than or equal to that of the connecting section 3. That is to say, the one end that is close to linkage segment 3 on the inner wall of male joint 2 is equipped with the changeover portion, and the diameter of changeover portion is less than or equal to the diameter of the minor diameter end of linkage segment 3, can show the clearance that reduces between fish top and the guide section 4 of guide shoe 1 like this after the fish top is leading-in, avoids the fish top to appear deviating problem in the make-up process.
In some embodiments, the first thread 6 and the second thread 7 may also be both provided on the outer wall of the pin 2, as shown in fig. 2, when the first thread 6 and the second thread 7 are provided on both sides of an external thread, respectively, which matches the internal thread on the connecting section 3 of the guide shoe 1.
In some embodiments, the material of the male joint 2 is structural alloy steel, for example, the structural alloy steel is 40CrMnMo (a high-strength medium carbon quenched and tempered manganese steel), which has high strength, high elasticity and wear resistance, and has high hardenability, or the male joint 2 may be made of other materials, and the material of the male joint 2 is not particularly limited in the embodiments of the present invention.
All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.
The utility model provides a sleeve pipe tieback device, guide section 4 through with guide shoe 1 sets up to the circular conical surface, make the fish top can follow the big footpath end (the one end that is close to guide section 4 in guide shoe 1) of guide shoe 1 leading-in, thereby lead to the fish top, keep the fish top between two parties, and guide back because guide section 4's existence on guide shoe 1, can remove gradually to the left end of male joint 2, and draw the sleeve pipe and carry out the tieback in guide shoe 1, the make-up operation on the fish top of being convenient for, make the make-up swiftly convenient, and simultaneously, utilize a plurality of washing holes 5 to the fish top, sleeve pipe and male joint 2 wash, keep the fish top, the cleanliness of sleeve pipe and male joint 2, and can reduce the emergence of the wrong knot of the in-process of making up and detaining the phenomenon partially.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A casing tie-back device, comprising: the guide shoe comprises a guide shoe (1) and a male connector (2), wherein the guide shoe (1) is sleeved outside the male connector (2);
the guide shoe (1) is cylindrical, the inner wall of the guide shoe (1) comprises a connecting section (3) and a guiding section (4), the connecting section (3) is used for connecting the guide shoe (1) and the male connector (2), the curved surface formed by the guiding section (4) is a conical surface, the size of one end, connected with the connecting section (3), of the guiding section (4) is smaller than that of the other end, and the guiding section (4) is used for guiding the fish top;
a plurality of cleaning holes (5) are formed in the guide shoe (1), the cleaning holes (5) penetrate through the cylindrical wall of the guide shoe (1), and the cleaning holes (5) are used for cleaning a casing tie-back device;
the male connector (2) is cylindrical, one end of the male connector (2) is connected with the connecting section (3) of the guide shoe (1), one end of the male connector (2) is also used for connecting a sleeve, and the other end of the male connector (2) is connected with a fish top.
2. The casing tie-back device according to claim 1, characterized in that a first thread (6) is provided on an inner wall of the one end of the male connector (2), the one end of the male connector (2) being threadedly connected to the casing by the first thread (6);
and a second thread (7) is arranged on the inner wall of the other end of the male connector (2), and the other end of the male connector (2) is connected with the fish top thread through the second thread (7).
3. Casing tie-back device according to claim 2, characterized in that the curved surfaces formed by said first thread (6) and said second thread (7) are conical surfaces.
4. Casing tie-back device according to claim 1, characterized in that the inner wall of the one end of the male connector (2) is provided with a transition section having a size smaller than or equal to the size of the connection section (3).
5. Casing tieback according to claim 1, characterized in that the curved surface formed by the guide section (4) is a conical surface with a cone angle of 3 ° to 5 °.
6. Casing tie-back device according to claim 1, characterized in that said plurality of washing holes (5) open on the guide shoe (1) on the cylindrical wall of the guide section (4).
7. The cannula tieback according to claim 1, wherein the distance between the centerline of the plurality of cleaning holes (5) and the end of the guide shoe (1) connected to the male connector (2) is 80-90 mm.
8. Cannula-tieback according to claim 1, characterized in that said plurality of washing holes (5) are evenly distributed along the circumferential direction of the guide shoe (1).
9. The casing tie-back device according to claim 1, wherein the connecting section (3) is provided with an internal thread, and the outer wall of the male connector (2) is provided with an external thread matching the internal thread.
10. The casing tie-back device according to claim 1, characterized in that the guide shoe (1) and the male connector (2) are both made of alloy structural steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120407109.2U CN214944072U (en) | 2021-02-23 | 2021-02-23 | Sleeve tie-back device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120407109.2U CN214944072U (en) | 2021-02-23 | 2021-02-23 | Sleeve tie-back device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944072U true CN214944072U (en) | 2021-11-30 |
Family
ID=79098762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120407109.2U Active CN214944072U (en) | 2021-02-23 | 2021-02-23 | Sleeve tie-back device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944072U (en) |
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2021
- 2021-02-23 CN CN202120407109.2U patent/CN214944072U/en active Active
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