CN215950370U - High extension metal seal ring and ball seat - Google Patents
High extension metal seal ring and ball seat Download PDFInfo
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- CN215950370U CN215950370U CN202120365593.7U CN202120365593U CN215950370U CN 215950370 U CN215950370 U CN 215950370U CN 202120365593 U CN202120365593 U CN 202120365593U CN 215950370 U CN215950370 U CN 215950370U
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Abstract
The utility model relates to the field of petroleum underground construction, in particular to a high-extension metal sealing ring which comprises a ring body, wherein a plurality of axial grooves extending from an end face to the middle part of the ring body are formed in two ends of the ring body, the depth of each axial groove in the axial direction of the ring body is smaller than half of the length of the ring body, and the axial grooves are obliquely arranged in the circumferential direction of the ring body and keep the same oblique direction. The high-extension metal sealing ring increases the surface area of the ring body, so that the extension performance of the ring body is improved; the axial grooves are arranged in the circumferential direction of the ring body in an inclined mode and keep the inclined direction consistent, so that the stress distribution of the whole ring body in the axial grooves is guaranteed, the stress concentration condition is avoided, the extending performance of the whole ring body is guaranteed, and the condition of local fracture is avoided.
Description
Technical Field
The utility model relates to the field of petroleum underground construction, in particular to a high-extension metal sealing ring and a ball seat.
Background
The existing bridge plug using a metal sealing ring as a sealing element has the advantage that the outer diameter of the bridge plug with the metal sealing ring is generally larger than that of a rubber cylinder bridge plug because the metal expansion rate is far lower than that of rubber, so that the relatively low expansion rate of metal is compensated, and the aim of effectively sealing a sleeve is fulfilled.
Due to the fact that the outer diameter is large, the bridge plug is prone to risks of blocking and jamming in the processes of descending and pumping, and meanwhile, the bridge plug is sensitive to material performance, if the material performance does not reach the standard, the metal sealing ring can be directly broken in the expansion process, and effective sealing cannot be formed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-elongation metal sealing ring and a ball seat so as to improve the extensibility of the metal sealing ring.
The technical scheme for solving the technical problems is as follows: the utility model provides a high metal seal ring that extends, includes the ring body, the both ends of ring body all are equipped with a plurality of from the terminal surface to the axial recess that the middle part of ring body extended, the axial recess is in the axial of ring body is gone up the degree of depth and is less than half of the length of ring body, the axial recess is in the slope sets up and keeps the incline direction unanimous in the circumference of ring body.
The working principle and the beneficial effects of the utility model are as follows: because both ends of the ring body are provided with a plurality of inclined axial grooves extending from the end faces to the middle part of the ring body, compared with a straight groove structure axially parallel to the ring body, the technical scheme increases the surface area of the ring body, thereby improving the extension performance of the ring body; meanwhile, as the depth of the axial groove in the axial direction of the ring body is less than half of the length of the ring body, a complete and continuous ring body is reserved in the middle of the ring body, and the sealing reliability is ensured; furthermore, the axial grooves are arranged in the circumferential direction of the ring body in an inclined mode and keep the inclined direction consistent, so that the stress distribution of the whole ring body in the axial grooves is guaranteed, the stress concentration condition is avoided, the extending performance of the whole ring body is guaranteed, and the local fracture condition is avoided.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the axial grooves at the two ends of the ring body are arranged alternately in the circumferential direction of the ring body.
The beneficial effect of adopting the further scheme is that: the axial grooves are arranged alternately in the circumferential direction of the ring body, so that the stress balance of the ring body at the axial grooves is further ensured.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, a circumferential groove which is communicated with the bottom of the axial groove is formed in the middle of the ring body.
The beneficial effect of adopting the further scheme is that: through setting up the circumference recess, further increase the surface area of ring body, simultaneously, can not produce local stress on the ring body of axial recess's bottom department, ensured the extension reliability of ring body.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the length extending direction of the circumferential groove is perpendicular to the axis of the ring body.
The beneficial effect of adopting the further scheme is that: the extension stress at the circumferential groove is ensured to be kept consistent, and local fracture is avoided.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the bottom of the axial groove is communicated with the middle of the circumferential groove.
The beneficial effect of adopting the further scheme is that: the extension balance of the ring bodies on two sides of the axial groove is ensured.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the axial grooves are uniformly distributed in the circumferential direction of the ring body.
The beneficial effect of adopting the further scheme is that: so that the extension stress in the circumferential direction of the ring body is equalized.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the axial groove has a depth in the axial direction of the ring body between 3/7 and 2/7 of the length of the ring body.
The beneficial effect of adopting the further scheme is that: the middle of the ring body is kept in a complete continuous ring body of 1/7-3/7 ring body length, and the extending effect and the sealing reliability are ensured to be optimal.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the inner surface of the ring body is of a conical structure.
The beneficial effect of adopting the further scheme is that: the ring body with the inner surface in a conical structure is convenient to be matched with the conical central tube.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the ring body is a soluble metal that is soluble in well fluid.
The beneficial effect of adopting the further scheme is that: the ring body made of soluble metal is directly dissolved in well liquid after the underground work is finished, no residue is left, and the subsequent construction is facilitated.
The present invention also provides a tee comprising: slips, a central pipe, a lower joint and the high-extension metal sealing ring; the ring body cover is established on the outer wall of center tube, the one end of slips with the ring body butt, the other end of slips with the lower clutch butt.
The ball seat has the beneficial effects that: due to the adoption of the high-extension metal sealing ring, a plurality of inclined axial grooves extending from the end surface to the middle part of the ring body are arranged at the two ends of the ring body of the high-extension metal sealing ring, and the surface area of the ring body is increased relative to a straight groove structure parallel to the axial direction of the ring body, so that the extension performance of the ring body is improved; meanwhile, as the depth of the axial groove in the axial direction of the ring body is less than half of the length of the ring body, a complete and continuous ring body is reserved in the middle of the ring body, and the sealing reliability is ensured; furthermore, the axial grooves are arranged in the circumferential direction of the ring body in an inclined mode and keep the inclined direction consistent, so that the stress distribution of the whole ring body in the axial grooves is guaranteed, the stress concentration condition is avoided, the extending performance of the whole ring body is guaranteed, and the local fracture condition is avoided.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of a height-adjustable metal seal ring according to the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in one orientation;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic view of the construction of the tee of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. ring body, 11, axial grooves, 12, circumferential grooves, 2, slips, 3, central tube, 4 and lower joint
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
Fig. 1 to 3 are schematic structural views of a first embodiment of a height-reduced metal seal ring according to the present invention.
The utility model provides a high metal seal ring that extends, includes ring body 1, and the both ends of ring body 1 all are equipped with a plurality of axial grooves 11 that extend to the middle part of ring body 1 from the terminal surface, and axial grooves 11 is less than half of the length of ring body 1 in the axial of ring body 1 of the degree of depth, and axial grooves 11 inclines to set up and keep the incline direction unanimously in the circumference of ring body 1.
A plurality of inclined axial grooves 11 extending from the end surface to the middle part of the ring body 1 are arranged at both ends of the ring body 1, and the surface area of the ring body is increased relative to a straight groove structure axially parallel to the ring body, so that the extension performance of the ring body is improved; meanwhile, because the depth of the axial groove 11 in the axial direction of the ring body 1 is less than half of the length of the ring body 1, a complete and continuous ring body is reserved in the middle of the ring body, and the sealing reliability is ensured; moreover, the axial grooves 11 are arranged in the circumferential direction of the ring body 1 in an inclined mode and keep the inclined direction consistent, so that the stress of the whole ring body in the axial grooves 11 is uniformly distributed, the stress concentration condition is avoided, the extending performance of the whole ring body is guaranteed, and the condition of local fracture is avoided.
In the embodiment, the axial groove 11 is inclined at an angle in the circumferential direction of the ring body 1, that is, the included angle between the axial groove 11 and the axis of the ring body 1 is 40 °, so that the surface area increase of the ring body and the stress release are reasonably controlled. In a specific embodiment, the included angle can be adaptively selected from 10 ° to 60 ° according to actual materials and use conditions.
In the present embodiment, a circumferential groove 12 is provided in the middle of the ring body 1, which penetrates the bottom of the axial groove 11, wherein the length extension direction of the circumferential groove 12 is perpendicular to the axis of the ring body 1, and the bottom of the axial groove 11 penetrates the circumferential groove 12 in the middle thereof.
The technical scheme of the embodiment ensures that the extension stress at the circumferential groove 12 keeps consistent, avoids local fracture, and ensures the extension balance of the ring bodies at two sides of the axial groove 11.
In this embodiment, the axial grooves 11 and the circumferential grooves 12 are 6 and are uniformly distributed in the circumferential direction of the ring body 1, so that the extension stress in the circumferential direction of the ring body is balanced.
In the present embodiment, the axial grooves 11 and the circumferential grooves 12 are formed by wire cutting, and each have a width of 0.4 mm. The elongation percentage of the high-elongation metal sealing ring can reach more than 30%, the metal sealing ring cannot break, and compared with a conventional metal sealing ring without the technical scheme, the high-elongation metal sealing ring can break when the elongation percentage reaches 10%, the elongation percentage is increased by 2 times, and unexpected technical effects are achieved. Meanwhile, the wall thickness of the metal sealing ring is reduced by 8-12%, materials are saved, the dredging channels for underground plugging are improved, and meanwhile, the operation risk caused by large outer diameter is avoided.
In a specific embodiment, the axial grooves 11 and the circumferential grooves 12 may be formed by mechanical cutting or the like, and the width thereof may be set to several millimeters, so as to meet and match a specific downhole use condition.
In the present embodiment, the axial grooves 11 at both ends of the ring body 1 are arranged alternately with each other in the circumferential direction of the ring body 1. Namely, any one axial groove 11 at the left end in the figure is positioned in the middle of two adjacent axial grooves 11 at the right end in the figure. Further ensuring stress equalization of the ring body at the axial grooves 11.
In this embodiment the axial groove 11 has a depth 5/14 of the length of the ring body 1 in the axial direction of the ring body 1, i.e. a complete continuous ring keeping the middle part of the ring body 2/7 of the length of the ring body, ensuring an optimal extension and sealing. The technical problem that the sealing effect of the metal sealing ring is not good due to the fact that the axial groove 11 is too deep and the extending effect of the metal sealing ring is not good due to the fact that the axial groove 11 is too shallow are avoided.
In this embodiment, the inner surface of the ring body 1 is tapered to facilitate engagement with a tapered central tube.
In the specific embodiment, the ring body 1 is soluble metal which is soluble in well fluid, and after the downhole work is completed, the ring body is directly dissolved in the well fluid, so that no residue is generated, and the subsequent construction is facilitated. Meanwhile, other types of metals can be selected according to the specific conditions of underground construction. Soluble metals are those metals which are soluble in a liquid of the respective degree of mineralization.
In particular embodiments, to achieve better elongation, higher elongation soluble metals, such as magnesium alloy components and the like, may be selected.
Meanwhile, in order to improve the sealing effect of the metal sealing ring, a rubber sealing ring structure can be additionally arranged on the outer surface of the complete continuous ring body.
The structural schematic diagram of the tee of the utility model is shown in fig. 4, and comprises: slips 2, a central pipe 3, a lower joint 4 and the high-extension metal sealing ring; the ring body 1 is sleeved on the outer wall of the central tube 3, one end of the slip 2 is abutted to the ring body 1, and the other end of the slip 2 is abutted to the lower connector 4.
The ball seat of the embodiment has the beneficial effects that: because the high-extension metal sealing ring is adopted, a plurality of inclined axial grooves 11 extending from the end surface to the middle part of the ring body 1 are arranged at the two ends of the ring body 1, and the surface area of the ring body is increased relative to a straight groove structure parallel to the axial direction of the ring body, so that the extension performance of the ring body is improved; meanwhile, because the depth of the axial groove 11 in the axial direction of the ring body 1 is less than half of the length of the ring body 1, a complete and continuous ring body is reserved in the middle of the ring body, and the sealing reliability is ensured; moreover, the axial grooves 11 are arranged in the circumferential direction of the ring body 1 in an inclined mode and keep the inclined direction consistent, so that the stress of the whole ring body in the axial grooves 11 is uniformly distributed, the stress concentration condition is avoided, the extending performance of the whole ring body is guaranteed, and the condition of local fracture is avoided.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high metal seal ring that extends, its characterized in that includes ring body (1), the both ends of ring body (1) all are equipped with a plurality of from the terminal surface to axial recess (11) that the middle part of ring body (1) extended, axial recess (11) are in the axial of ring body (1) is gone up the degree of depth and is less than half of the length of ring body (1), axial recess (11) are in the slope sets up and keeps the incline direction unanimous in the circumference of ring body (1).
2. A high elongation metal sealing ring according to claim 1, wherein the axial grooves (11) at both ends of the ring body (1) are arranged alternately with each other in the circumferential direction of the ring body (1).
3. A high elongation metal sealing ring according to claim 2, characterized in that a circumferential groove (12) is provided in the middle of the ring body (1) through the bottom of the axial groove (11).
4. A high elongation metal sealing ring according to claim 3, wherein the length extension of the circumferential groove (12) is perpendicular to the axis of the ring body (1).
5. A high elongation metal seal ring according to claim 4, wherein the bottom of the axial groove (11) is through-going with the circumferential groove (12) in the middle thereof.
6. A high elongation metal seal ring according to any one of claims 1 to 5, wherein the axial grooves (11) are evenly distributed in the circumferential direction of the ring body (1).
7. A high elongation metal seal ring according to any one of claims 1 to 5, wherein the axial groove (11) has a depth in the axial direction of the ring body (1) of between 3/7 and 2/7 of the length of the ring body (1).
8. A high elongation metal seal ring according to any one of claims 1 to 5, wherein the inner surface of the ring body (1) is of a tapered configuration.
9. A high elongation metal seal ring according to any one of claims 1 to 5, wherein said ring body (1) is of a soluble metal soluble in well fluid.
10. A tee, comprising: slips (2), a base pipe (3), a lower joint (4) and a high elongation metal sealing ring according to any one of claims 1 to 9; the ring body (1) cover is established on the outer wall of center tube (3), the one end of slips (2) with ring body (1) butt, the other end of slips (2) with lower clutch (4) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365593.7U CN215950370U (en) | 2021-02-09 | 2021-02-09 | High extension metal seal ring and ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365593.7U CN215950370U (en) | 2021-02-09 | 2021-02-09 | High extension metal seal ring and ball seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215950370U true CN215950370U (en) | 2022-03-04 |
Family
ID=80566358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120365593.7U Active CN215950370U (en) | 2021-02-09 | 2021-02-09 | High extension metal seal ring and ball seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215950370U (en) |
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2021
- 2021-02-09 CN CN202120365593.7U patent/CN215950370U/en active Active
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