CN219119210U - Sealing rubber sleeve for oil-gas well - Google Patents
Sealing rubber sleeve for oil-gas well Download PDFInfo
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- CN219119210U CN219119210U CN202320032533.2U CN202320032533U CN219119210U CN 219119210 U CN219119210 U CN 219119210U CN 202320032533 U CN202320032533 U CN 202320032533U CN 219119210 U CN219119210 U CN 219119210U
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Abstract
The utility model relates to the technical field of well drilling plugging tools, and discloses a sealing rubber sleeve for an oil and gas well, which comprises a circular tubular colloid, wherein at least two inner annular grooves are formed in the inner wall of the colloid along the axial direction; the outer annular grooves are arranged between two adjacent inner annular grooves and correspond to the outer surfaces of the colloid. The rubber body is in a circular tube structure, and the length of the rubber body is longer than that of a common flat pad type rubber pad, so that the rubber body has a longer sealing range; and utilize inner ring groove and outer ring groove, make the colloid can form both ends seal structure when compressing, intersect in a plurality of overlapping many seal structures of prior art, guarantee the axiality of both ends seal structure more easily, can effectively improve the leakproofness.
Description
Technical Field
The utility model relates to the technical field of well drilling plugging tools, in particular to a sealing rubber sleeve for an oil and gas well.
Background
In the oil and gas drilling process, a well is often required to be plugged by using a packer, and the packer is mainly sealed by attaching a rubber sleeve on the outer wall of a central pipe to the wall of the well. The existing packer is usually sealed by a plurality of overlapped rubber sleeves, coaxiality of each rubber sleeve cannot be guaranteed, and the local sealing effect on the periphery is poor, so that the packer is at risk of leakage.
The patent with the application number of CN201210574456.X discloses a composite rubber packer, wherein a rubber component consists of a pressure expansion rubber and a liquid expansion rubber, and the composite rubber packer has the characteristics of quick setting and long-term effective sealing. However, in this prior art, there is a disadvantage that it is difficult to ensure the coaxiality of each packing element when a plurality of packing elements are installed, and the sealing effect of the periphery part is easily poor, so that the packer is at risk of leakage. Based on the defects, a sealing rubber sleeve with a simple structure and capable of effectively improving the sealing effect is needed.
Disclosure of Invention
In order to solve the problems, the utility model aims to provide the sealing rubber sleeve for the oil and gas well, which has a simple structure and can effectively improve the sealing effect.
In order to achieve the above purpose, the present utility model adopts the technical scheme that:
the sealing rubber sleeve for the oil and gas well comprises a circular tubular colloid, wherein at least two inner annular grooves are formed in the inner wall of the colloid along the axial direction; the outer annular grooves are arranged between two adjacent inner annular grooves and correspond to the outer surfaces of the colloid.
As a preferred embodiment, the cross section of the inner annular groove is in an isosceles triangle shape with the apex angle outwards; the cross section of the outer annular groove is in an isosceles triangle shape with an inward vertex angle.
As a preferred embodiment, sliding sleeves are arranged at two ends of the inner wall of the colloid; and the inner diameter of the sliding sleeve is equal to the inner diameter of the colloid.
As a preferred embodiment, the depth of the inner and outer annular grooves is one third to one half of the wall thickness of the gel.
As a preferred embodiment, the width of the inner annular groove is greater than the width of the outer annular groove.
The utility model has the beneficial effects that:
the utility model provides a sealing rubber sleeve for an oil-gas well, wherein a rubber body is of a circular tube structure, and the length of the rubber body is longer than that of a common flat pad type rubber pad, so that the rubber body has a longer sealing range; and utilize inner ring groove and outer ring groove, make the colloid can form both ends seal structure when compressing, intersect in a plurality of overlapping many seal structures of prior art, guarantee the axiality of both ends seal structure more easily, can effectively improve the leakproofness.
Drawings
FIG. 1 is a cross-sectional view of a sealant sleeve in accordance with an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a sealant sleeve in accordance with an embodiment of the present utility model in operation.
In the figure: 1. a colloid; 11. an inner annular groove; 12. an outer annular groove; 2. a sliding sleeve.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1-2, the present embodiment provides a sealant sleeve for an oil and gas well, which comprises a tubular colloid 1, wherein at least two inner annular grooves 11 are formed in the inner wall of the colloid 1 along the axial direction; the outer ring grooves 12 are arranged on the outer surface of the colloid 1 corresponding to the outer ring grooves 12 between two adjacent inner ring grooves 11.
The sealing rubber sleeve for the oil and gas well is characterized in that the circular tubular colloid 1 is sleeved on the central tube of the packer, so that the installation is convenient; when the packer works, the colloid 1 is extruded, and the peripheral side of the colloid 1 corresponding to the inner annular groove 11 is expanded outwards along the circumference, so that the outer wall of the colloid 1 is attached to the inner wall of a well, and sealing is formed. The corresponding part of the outer annular groove 12 is recessed towards the middle part of the colloid 1, so that the outer wall of the colloid 1 forms a two-section sealing structure. The compression space of the colloid 1 can be increased by arranging the inner annular groove 11 and the outer annular groove 12, so that the colloid 1 has enough compression amount to improve the sealing effect.
Example 2
As shown in fig. 1-2, the present embodiment is developed on the basis of the foregoing embodiment, and specifically, the present embodiment provides a sealant sleeve for an oil-gas well, where the cross section of the inner annular groove 11 is in an isosceles triangle shape with an apex angle facing outwards; the cross section of the outer annular groove 12 is in an isosceles triangle shape with an inward vertex angle. Specifically, two isosceles sides of an isosceles triangle on the cross-sectional view of the inner annular groove 11 are two side walls of the inner annular groove 11. The two isosceles sides of the isosceles triangle on the cross-sectional view of the outer annular groove 12 are two side walls of the outer annular groove 12. So as to ensure that the two sides of the inner annular groove 11 and the outer annular groove 12 are pressed more uniformly when the colloid 1 is extruded, thereby ensuring that the outer expansion of the colloid 1 in the peripheral direction is more uniform so as to ensure the sealing effect.
As a preferred embodiment, both ends of the inner wall of the colloid 1 are provided with sliding sleeves 2; and the inner diameter of the sliding sleeve 2 is equal to the inner diameter of the colloid 1. Specifically, the main body of the sliding sleeve 2 is embedded in the colloid 1, and when the colloid 1 is sleeved on the central tube, the sliding sleeve 2 is arranged on the outer wall of the central tube. The coaxiality between the colloid 1 and the central tube can be further improved by utilizing the sliding sleeve 2, so that the sealing effect is further improved. Further, only the sliding sleeves 2 are arranged at the two ends of the inner wall of the colloid 1, so that the solid part of the inner wall of the colloid 1 between the inner annular grooves 11 at the two ends can be attached to the outer wall of the central tube during compression to form a seal, and the leakage of liquid from between the colloid 1 and the central tube is prevented. Preferably, the sliding sleeve 2 is made of copper or plastic. To prevent scratching the central tube and thus to ensure tightness between the gel 1 and the central tube.
As a preferred embodiment, in order to ensure that the gel 1 has sufficient compression space and structural strength of the gel 1, the depth of the inner annular groove 11 and the outer annular groove 12 is one third to one half of the wall thickness of the gel 1.
As a preferred embodiment, the width of the inner annular groove 11 is larger than the width of the outer annular groove 12, so that the colloid 1 is ensured to have enough compression space along the axial direction, and the outer wall of the colloid 1 is ensured to have a sufficiently long sealing surface.
Example 3
As shown in fig. 1-2, the present embodiment is developed based on the above embodiment, and specifically, the present embodiment provides a sealing principle of a sealing rubber sleeve for an oil and gas well, which is as follows:
the rubber body 1 is sleeved on the central pipe, when the packer works, the rubber body 1 is radially deformed through extrusion of force, the inner annular groove 11 is correspondingly expanded outwards along the circumference of the rubber body 1, and therefore the outer surface of the rubber body 1 is attached to the inner wall of a well to form a sealing structure; and the corresponding part of the outer annular groove 12 is recessed towards the middle part of the colloid 1, so that the outer wall of the colloid 1 forms a two-section sealing structure. And the solid part of the inner wall of the colloid 1 between the inner annular grooves 11 at the two ends can be attached to the outer wall of the central tube when being compressed so as to form a seal, thereby preventing liquid from leaking between the colloid 1 and the central tube.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The sealing rubber sleeve for the oil and gas well is characterized by comprising a tubular colloid (1), wherein at least two inner annular grooves (11) are formed in the inner wall of the colloid (1) along the axial direction; an outer annular groove (12) is formed in the outer surface of the colloid (1); the outer annular grooves (12) are positioned between two adjacent inner annular grooves (11).
2. The sealant sleeve for an oil and gas well according to claim 1, wherein: the section of the inner annular groove (11) is in an isosceles triangle shape with the apex angle outwards; the cross section of the outer annular groove (12) is in an isosceles triangle shape with an inward vertex angle.
3. The sealant sleeve for an oil and gas well according to claim 1, wherein: sliding sleeves (2) are arranged at two ends of the inner wall of the colloid (1); and the inner diameter of the sliding sleeve (2) is equal to the inner diameter of the colloid (1).
4. The sealant sleeve for an oil and gas well according to claim 1, wherein: the depth of the inner annular groove (11) and the outer annular groove (12) is one third to one half of the wall thickness of the colloid (1).
5. The sealant sleeve for an oil and gas well according to claim 1, wherein: the width of the inner annular groove (11) is larger than the width of the outer annular groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320032533.2U CN219119210U (en) | 2023-01-06 | 2023-01-06 | Sealing rubber sleeve for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320032533.2U CN219119210U (en) | 2023-01-06 | 2023-01-06 | Sealing rubber sleeve for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219119210U true CN219119210U (en) | 2023-06-02 |
Family
ID=86533618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320032533.2U Active CN219119210U (en) | 2023-01-06 | 2023-01-06 | Sealing rubber sleeve for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219119210U (en) |
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2023
- 2023-01-06 CN CN202320032533.2U patent/CN219119210U/en active Active
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