CN210134835U - Constant-pressure sliding sleeve switch for horizontal well - Google Patents
Constant-pressure sliding sleeve switch for horizontal well Download PDFInfo
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- CN210134835U CN210134835U CN201920520297.2U CN201920520297U CN210134835U CN 210134835 U CN210134835 U CN 210134835U CN 201920520297 U CN201920520297 U CN 201920520297U CN 210134835 U CN210134835 U CN 210134835U
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- sliding sleeve
- horizontal well
- outer cover
- sleeve switch
- pressure sliding
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Abstract
The utility model provides a horizontal well constant pressure sliding sleeve switch, which comprises an outer cover, a central pipe connected with the outer cover through screw threads, a solid sliding sleeve and a shearing pin; the solid sliding sleeve is fixed in the central tube through the shearing pin; two holes are respectively arranged on the outer cover and the side wall of the central tube. The utility model discloses a horizontal well level pressure sliding sleeve switch can solve conventional vertical shaft and hit the ball seat and can not seal the center tube through-hole because of the action of gravity steel ball at the horizontal well section, and the unable sealed pressure-bearing of tubular column leads to the unable problem of setting of Y341 packer, realizes that the fluid pressure type packer sets up, satisfies the needs that the horizontal well blocked water, and does not increase the operation degree of difficulty, is favorable to popularizing and applying.
Description
Technical Field
The utility model relates to an oil recovery engineering technical field indicates a horizontal well level pressure sliding sleeve switch especially.
Background
Horizontal well development is an important technology for improving the yield, the recovery rate and the economic benefit of an oil field. With the continuous expansion of the application scale of the horizontal well and the extension of the development period, the water outlet problem is increasingly prominent. For a horizontal well with developed edge bottom water, the water outlet caused by the edge bottom water invasion due to the deficit of the horizontal section is better in effect by adopting the technologies of chemical sectional water plugging, multi-section selective water plugging and the like. However, after the horizontal well is frequently injected with steam and is subjected to multi-round handling, under the influence of multiple aspects such as thermal stress, ground stress and the like, the casing above the horizontal section oil reservoir of the horizontal well often has the problems of breakage, hanger leakage and the like. As the thick oil horizontal wells are mostly encrypted among wells, the well distance between the vertical wells and the horizontal wells is short, the relation between oil and water is complex, and the distance between the oil and the water is small, the water layer near the casing damage and hanger parts of the horizontal wells can flow from the broken part of the casing, and the water outlet of the oil well is caused. Once the oil well produces water and oil, the oil yield is reduced sharply, and the development effect of the horizontal well is seriously influenced. Aiming at the problem that water is discharged due to water channeling caused by top water leakage caused by leakage of a horizontal well hanger and a light pipe section, a hydraulic packer (such as a Y341 packer) is adopted for plugging at present, but a ball seat is drilled in a conventional vertical well, a central pipe through hole cannot be sealed due to the action of gravity of a steel ball in the horizontal well section, a pipe column cannot bear pressure in a sealed mode, and the Y341 packer cannot be set.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that a Y341 packer cannot be set because a steel ball cannot seal a central pipe through hole and a pipe column cannot seal and bear pressure due to the action of gravity in a horizontal well section when a ball seat is drilled in a conventional vertical well, the embodiment of the utility model provides a horizontal well constant pressure sliding sleeve switch which comprises an outer cover, a central pipe connected with the outer cover through threads, a solid sliding sleeve and a shearing pin;
the solid sliding sleeve is fixed in the central tube through the shearing pin;
two holes are respectively arranged on the outer cover and the side wall of the central tube.
Optionally, in an embodiment of the present invention, the horizontal well constant-pressure sliding sleeve switch further includes a limit fixing screw disposed at the lower end of the outer cover, and the outer cover is connected to the central pipe and then used for limiting and fixing.
Optionally, in an embodiment of the present invention, the inner portion of the lower end of the outer cover is threaded.
Optionally, in an embodiment of the present invention, the outer portion of the upper end of the central tube is threaded, and the upper end of the central tube is connected to the inner portion of the lower end of the outer cover by a screw.
Optionally, in an embodiment of the present invention, the diameter of the holes on the outer cover and the side wall of the central tube are the same.
Optionally, in an embodiment of the present invention, the diameter of the holes on the outer cover and the side wall of the central tube is 15 mm.
Optionally, the utility model discloses an in the embodiment, the center tube upper end is equipped with the step for the restriction horizontal well level pressure sliding sleeve switch removes.
Optionally, in an embodiment of the present invention, the upper and lower ends of the solid sliding sleeve are provided with a sealing rubber ring.
Optionally, in an embodiment of the invention, the inner portion of the upper end of the housing is threaded for connection with a downhole tool.
Optionally, in an embodiment of the invention, the outer portion of the lower end of the base pipe is threaded for connection with a downhole tool.
The utility model discloses a horizontal well level pressure sliding sleeve switch can solve conventional vertical shaft and hit the ball seat and can not seal the center tube through-hole because of the action of gravity steel ball at the horizontal well section, and the unable sealed pressure-bearing of tubular column leads to the unable problem of setting of Y341 packer, realizes that the fluid pressure type packer sets up, satisfies the needs that the horizontal well blocked water, and does not increase the operation degree of difficulty, is favorable to popularizing and applying.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is the utility model discloses a structural schematic of horizontal well constant pressure sliding sleeve switch.
Detailed Description
The embodiment of the utility model provides a horizontal well level pressure sliding sleeve switch.
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 efforts belong to the protection scope of the present invention.
Horizontal well development is an important technology for improving the yield, the recovery rate and the economic benefit of an oil field. With the continuous expansion of the application scale of the horizontal well and the extension of the development period, the water outlet problem is increasingly prominent. For a horizontal well with developed edge bottom water, the water outlet caused by the edge bottom water invasion due to the deficit of the horizontal section is better in effect by adopting the technologies of chemical sectional water plugging, multi-section selective water plugging and the like. However, after the horizontal well is frequently injected with steam and is subjected to multi-round handling, under the influence of multiple aspects such as thermal stress, ground stress and the like, the casing above the horizontal section oil reservoir of the horizontal well often has the problems of breakage, hanger leakage and the like. As the thick oil horizontal wells are mostly encrypted among wells, the well distance between the vertical wells and the horizontal wells is short, the relation between oil and water is complex, and the distance between the oil and the water is small, the water layer near the casing damage and hanger parts of the horizontal wells can flow from the broken part of the casing, and the water outlet of the oil well is caused. Once the oil well produces water and oil, the oil yield is reduced sharply, and the development effect of the horizontal well is seriously influenced. Aiming at the problem that water is discharged due to water channeling caused by top water leakage caused by leakage of a horizontal well hanger and a light pipe section, a hydraulic packer (such as a Y341 packer) is adopted for plugging at present, but a ball seat is drilled in a conventional vertical well, a central pipe through hole cannot be sealed due to the action of gravity of a steel ball in the horizontal well section, a pipe column cannot bear pressure in a sealed mode, and the Y341 packer cannot be set.
As shown in fig. 1, the structure of a horizontal well constant pressure sliding sleeve switch according to an embodiment of the present invention is schematically illustrated, and the horizontal well constant pressure sliding sleeve switch shown in the figure includes an outer cover 1, a central tube 6 connected to the outer cover 1 by a thread, a solid sliding sleeve 5, and a shear pin 3;
the solid sliding sleeve 5 is fixed in the central pipe 6 through the shearing pin 3;
two holes 2 are respectively arranged on the side walls of the outer cover 1 and the central tube 6.
In this embodiment, horizontal well constant pressure sliding sleeve switch is connected with the packer, and during operation, when the pressure of ground pressure was greater than packer setting pressure, the pin 3 of cutting was cut off, and solid sliding sleeve 5 gliding. Two holes in the side wall of the central pipe correspond to two holes in the outer cover, after the solid sliding sleeve 5 slides downwards, the holes in the side walls of the outer cover 1 and the central pipe 6 are communicated and exposed, and therefore the holes are communicated with the oil sleeve to form a liquid inlet channel, and oil enters the oil pipe for production through the holes.
As an embodiment of the utility model, the horizontal well constant pressure sliding sleeve switch still including set up in the spacing set screw 4 of dustcoat lower extreme the dustcoat with be used for spacing fixedly after the center tube is connected.
As an embodiment of the present invention, the interior of the lower end of the outer cover is threaded.
In this embodiment, the exterior of the upper end of the center tube is threaded and the upper end of the center tube is connected to the threads inside the lower end of the outer cover.
As an embodiment of the invention, the outer mantle and the perforations in the side wall of the central tube are of the same diameter.
In this embodiment, the perforations in the side walls of the outer cover and the center tube are 15mm in diameter.
As an embodiment of the utility model, the center tube upper end is equipped with the step for the restriction horizontal well level pressure sliding sleeve switch removes.
As an embodiment of the utility model, the upper and lower both ends of solid sliding sleeve are equipped with the rubber sealing ring, avoid fluid to leak from this.
As an embodiment of the present invention, the interior of the upper end of the housing is threaded for connection with other downhole tools.
As an embodiment of the present invention, the exterior of the lower end of the center tube is threaded for connection with other downhole tools.
In a specific embodiment of the utility model, the horizontal well constant pressure sliding sleeve switch of the utility model mainly comprises an outer cover 1, a hole 2, a shearing pin 3, a spacing fixed pin 4, a solid sliding sleeve 5, a central tube 6 and the like; the inner part of the upper end of the outer cover 1 is provided with internal threads for connecting other downhole tools or components, the inner part of the lower end is provided with internal threads for connecting with external threads at the upper end of the central tube 6, the middle lower part of the outer cover is drilled with 2 holes with the diameter phi of 15mm, and the lower end is provided with a limit fixing screw for limiting and fixing after being connected with the central tube; a solid sliding sleeve is arranged in the central tube, the upper part and the lower part of the central tube are sealed by sealing rubber rings, and the central tube is fixed in the central tube by shearing pins; the upper end and the lower end of the central tube are provided with external threads, the upper end of the central tube is connected with the internal threads at the lower end of the outer cover, the lower end of the central tube is provided with external threads to be connected with other tools or components, the upper part of the central tube is drilled with 2 holes with the diameter phi of 15mm, the holes correspond to the 2 holes of the outer cover, the upper end of the central tube is provided with a step to limit the sliding sleeve switch to move upwards, and the sliding sleeve switch.
When the utility model discloses in going down the horizontal well along with other instruments, the during operation, ground is suppressed, and hydraulic action makes supporting fluid pressure type packer seat seal, continues to suppress, when pressure reaches a definite value (is greater than packer seat seal pressure), cuts off the pin and is cut off, and the sliding sleeve moves down, and the punchhole (2 x 15mm) of dustcoat and center tube expose, and the oil jacket intercommunication forms inlet channel, and fluid gets into oil pipe production through the punchhole. The sliding sleeve switch and the central pipe, the central pipe and the outer cover are provided with sealing rubber rings, so that the leakage is avoided. In addition, the front end of the central tube is provided with a step to prevent the sliding sleeve from moving reversely and only moving downwards to form one-way movement.
The utility model discloses a horizontal well level pressure sliding sleeve switch can solve conventional vertical shaft and hit the ball seat and can not seal the center tube through-hole because of the action of gravity steel ball at the horizontal well section, and the unable sealed pressure-bearing of tubular column leads to the unable problem of setting of Y341 packer, realizes that the fluid pressure type packer sets up, satisfies the needs that the horizontal well blocked water, and does not increase the operation degree of difficulty, is favorable to popularizing and applying.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The horizontal well constant-pressure sliding sleeve switch is characterized by comprising an outer cover, a central pipe, a solid sliding sleeve and a shearing pin, wherein the central pipe is connected with the outer cover through threads;
the solid sliding sleeve is fixed in the central tube through the shearing pin;
two holes are respectively arranged on the outer cover and the side wall of the central tube.
2. The horizontal well constant pressure sliding sleeve switch according to claim 1, further comprising a limit fixing screw arranged at the lower end of the outer cover, wherein the outer cover is connected with the central pipe and then used for limiting and fixing.
3. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein the inner part of the lower end of the outer cover is threaded.
4. The horizontal well constant pressure sliding sleeve switch according to claim 3, wherein threads are threaded on the outside of the upper end of the central tube, and the upper end of the central tube is connected with the threads inside the lower end of the outer cover.
5. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein the diameters of the perforations on the outer cover and the side wall of the central pipe are the same.
6. The horizontal well constant pressure sliding sleeve switch according to claim 5, wherein the diameter of the perforations in the lateral wall of the outer cover and the central pipe is 15 mm.
7. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein a step is arranged at the upper end of the central pipe and used for limiting the movement of the horizontal well constant pressure sliding sleeve switch.
8. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein the upper and lower ends of the solid sliding sleeve are provided with sealing rubber rings.
9. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein the inner portion of the upper end of the outer cover is threaded for connection with a downhole tool.
10. The horizontal well constant pressure sliding sleeve switch according to claim 1, wherein the outer portion of the lower end of the central tube is threaded for connection with a downhole tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520297.2U CN210134835U (en) | 2019-04-17 | 2019-04-17 | Constant-pressure sliding sleeve switch for horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520297.2U CN210134835U (en) | 2019-04-17 | 2019-04-17 | Constant-pressure sliding sleeve switch for horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210134835U true CN210134835U (en) | 2020-03-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920520297.2U Active CN210134835U (en) | 2019-04-17 | 2019-04-17 | Constant-pressure sliding sleeve switch for horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210134835U (en) |
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2019
- 2019-04-17 CN CN201920520297.2U patent/CN210134835U/en active Active
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