CN214498983U - Sealing mechanism with locking ring - Google Patents
Sealing mechanism with locking ring Download PDFInfo
- Publication number
- CN214498983U CN214498983U CN202120701688.1U CN202120701688U CN214498983U CN 214498983 U CN214498983 U CN 214498983U CN 202120701688 U CN202120701688 U CN 202120701688U CN 214498983 U CN214498983 U CN 214498983U
- Authority
- CN
- China
- Prior art keywords
- ring
- locking ring
- sealing
- oil pipe
- sealing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of well drilling well head sealing, and discloses a sealing mechanism with a locking ring, which is used for sealing a multistage oil pipe head and an oil pipe hanger; the sealing mechanism is placed between the oil pipe hanger and the multistage oil pipe head by a delivery tool; comprises a spacer ring and a locking ring; an S-shaped sealing ring is arranged on the outer ring of the spacer ring, and an FS sealing ring is arranged on the inner ring of the spacer ring; the locking ring is sleeved on the spacer ring; the outer ring of the locking ring is provided with an inclined plane matched with the delivery tool; the locking ring has elasticity; the outer ring of the locking ring is also provided with steps; the lower part of the spacer ring is provided with a plurality of counter bores; each counter bore is internally provided with a telescopic screw. The sealing mechanism in the technical scheme realizes positioning and fixing by utilizing the elastic locking ring and the telescopic screw, reduces the using quantity of jackscrews at the sealing position of the wellhead and can improve the sealing reliability of the wellhead.
Description
Technical Field
The utility model relates to a well head sealing mechanism, in particular to take sealing mechanism of locking ring.
Background
The conventional wellhead adopts jackscrews to fix and seal the combination, and because the number of the jackscrews is large, leakage points of wellhead equipment are increased, so that the possibility of fluid leakage in the field drilling operation and the later production process is increased; meanwhile, as the plurality of jackscrew holes are processed on the flange or the body, the strength of the connected flange or body is directly reduced, and the connection failure in the use process is easily caused, thus causing the occurrence of accidents; the patent with application publication number CN110792406A discloses a composite type clamping wellhead structure, wherein a tubing hanger is provided with discontinuous steps, a tubing head is provided with discontinuous annular grooves, and the steps and the annular grooves are positioned at the same height; when the oil pipe hanger is actually used, the step can be inserted into the annular groove by rotating the oil pipe hanger for a certain angle, so that the oil pipe hanger and the oil pipe head are locked; rotating the oil pipe hanger for a certain angle again to enable the steps to be completely separated from the annular groove, so that the oil pipe hanger and the oil pipe head can be separated; in the technical scheme disclosed by the prior art, the oil pipe head and the oil pipe hanger need to be locked and separated by rotating the oil pipe hanger or the oil pipe head, the steps and the annular grooves are not easy to be completely aligned in actual operation, and the difficulty in rotating the oil pipe hanger and the oil pipe head is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a take sealing mechanism of locking ring for integral fast-assembling well head reduces the trompil on body or flange to guarantee the intensity of flange or body.
The utility model provides a technical scheme that its technical problem adopted is: a sealing mechanism with a locking ring is used for sealing a multistage oil pipe head and an oil pipe hanger; the sealing mechanism is placed between the oil pipe hanger and the multistage oil pipe head by a delivery tool; comprises a spacer ring and a locking ring; an S-shaped sealing ring is arranged on the outer ring of the spacer ring, and an FS sealing ring is arranged on the inner ring of the spacer ring; the locking ring is sleeved on the spacer ring; the locking ring has elasticity; the upper part of the outer ring of the locking ring is provided with an inclined plane matched with the delivery tool; the lower part of the outer ring of the locking ring is provided with a step; the lower part of the spacer ring is provided with a plurality of counter bores; each counter bore is internally provided with a telescopic screw.
Further, the method comprises the following steps: the outer wall of the spacer ring is provided with a ring groove; the locking ring is sleeved in the annular groove; the locking ring is a high-strength alloy steel split ring.
Further, the method comprises the following steps: the inclined plane of the locking ring forms an included angle of 10-30 degrees with the vertical plane.
Further, the method comprises the following steps: the telescopic screw comprises a spring, a screw and a compression nut; the inner wall of the counter bore is provided with threads; the compression nut is engaged with the threads and blocks the spring and the screw in the counter bore.
Further, the method comprises the following steps: the head of the screw is positioned in the counter bore, and the other end of the screw penetrates through the compression nut and then extends out; the spring is positioned on one side of the screw, which is far away from the compression nut; the spring presses the head of the screw against the compression nut.
The utility model has the advantages that: the S sealing ring outside the spacer ring and the FS sealing ring inside the spacer ring can meet the sealing effect under the pressure of 15000PSI from the upper part and the lower part, and the sealing is reliable; the telescopic screw can be inserted into a hole on the upper end surface of the oil pipe hanger, so that the sealing mechanism cannot rotate along with the hole, and the horizontal positioning of the sealing mechanism is realized; the locking ring is extruded when the feeding tool clamps the sealing mechanism, and because the locking ring has elasticity, when the sealing mechanism is fed in place, the locking ring is restored after the feeding tool loosens the locking ring, and the step on the locking ring is clamped at a specified position in the multi-stage oil pipe head, so that the sealing mechanism is fixed; the sealing mechanism in the technical scheme realizes positioning and fixing by utilizing the elastic locking ring and the telescopic screw, reduces the using quantity of jackscrews at the sealing position of the wellhead and can improve the sealing reliability of the wellhead.
Drawings
FIG. 1 is a schematic structural view of a sealing mechanism;
fig. 2 is a schematic view of a locking ring structure.
Labeled as: 1. a spacer ring; 11. a ring groove; 2. locking a ring; 21. a bevel; 22. a step; 3. s, sealing rings; 4. FS seal ring; 5. a telescopic screw; 51. a spring; 52. a screw; 53. and (5) pressing the nut.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
As shown in fig. 1 and 2, a sealing mechanism with a locking ring is used for sealing a multi-stage tubing head and a tubing hanger; the sealing mechanism is placed between the oil pipe hanger and the multistage oil pipe head by a delivery tool; comprises a spacing ring 1 and a locking ring 2; an S-shaped sealing ring 3 is arranged on the outer ring of the spacer ring 1, and an FS sealing ring 4 is arranged on the inner ring; the locking ring 2 is sleeved on the spacer ring 1; the locking ring 2 has elasticity; the upper part of the outer ring of the locking ring 2 is provided with an inclined plane 21 matched with a delivery tool; the lower part of the outer ring of the locking ring 2 is provided with a step 22; a plurality of counter bores are formed in the lower portion of the spacer ring 1; each counter bore is provided with a telescopic screw 5.
On the basis, the outer wall of the spacer ring 1 is provided with a ring groove 11; the locking ring 2 is sleeved in the annular groove 11; the locking ring 2 is a high-strength alloy steel split ring.
On the basis of the above, the included angle between the inclined surface 21 of the locking ring 2 and the vertical surface is 10-30 °, and the included angle between the inclined surface is 20 ° in the embodiment.
On the basis of the above, the telescopic screw comprises a spring 51, a screw 52 and a compression nut 53; the inner wall of the counter bore is provided with threads; the compression nut 53 engages the threads and retains the spring 51 and screw 52 within the counterbore.
On the basis, the head of the screw 52 is positioned in the counter bore, and the other end of the screw extends out after penetrating through the compression nut 53; the spring 51 is positioned on the side of the screw 52 away from the compression nut 53; the spring 51 presses the head of the screw 52 against the compression nut 53.
In practical use, the feeding tool is sleeved on the sealing mechanism, and the feeding tool is rotated in the positive direction, so that the feeding tool extrudes the inclined surface 21 of the locking ring 2, the locking ring 2 is compressed in the annular groove 11 of the spacer ring 1, and grabbing is completed; after the sealing mechanism is placed on the oil pipe hanger through the delivery tool, when the telescopic screw 5 is not aligned with the matching hole, the telescopic screw 5 retracts into the counter bore under the stress, the delivery tool is rotated in the forward direction to drive the sealing mechanism to rotate until the telescopic screw 5 is aligned with the matching hole on the step end face of the oil pipe hanger, and at the moment, the telescopic screw 5 extends into the matching hole, so that the sealing mechanism cannot follow the rotation of the delivery tool, and the horizontal direction positioning of the sealing mechanism is realized; at the moment, the feeding tool rotates reversely, and the compressed locking ring 2 can be gradually loosened by the feeding tool rotating reversely because the sealing mechanism cannot rotate until the feeding tool is completely separated from the sealing mechanism; after the locking ring 2 is restored, the step 22 on the outer ring of the locking ring 2 is clamped in the multi-stage oil pipe head, so that the sealing mechanism is fixed; the S sealing ring 3 and the FS sealing ring 4 arranged on the spacer ring 1 can meet the sealing effect under the pressure of 15000PSI at the upper part and the lower part.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (5)
1. A sealing mechanism with a locking ring is used for sealing a multistage oil pipe head and an oil pipe hanger; the sealing mechanism is placed between the oil pipe hanger and the multistage oil pipe head by a delivery tool; the method is characterized in that: comprises a spacer ring (1) and a locking ring (2); an S-shaped sealing ring (3) is arranged on the outer ring of the spacer ring (1), and an FS (FS) sealing ring (4) is arranged on the inner ring; the locking ring (2) is sleeved on the spacer ring (1); the locking ring (2) has elasticity; the upper part of the outer ring of the locking ring (2) is provided with an inclined plane (21) matched with the delivery tool; the lower part of the outer ring of the locking ring (2) is provided with a step (22); the lower part of the spacer ring (1) is provided with a plurality of counter bores; each counter bore is internally provided with a telescopic screw (5).
2. A sealing mechanism with a locking ring as claimed in claim 1, wherein: the outer wall of the spacer ring (1) is provided with a ring groove (11); the locking ring (2) is sleeved in the annular groove (11); the locking ring (2) is a high-strength alloy steel split ring.
3. A sealing mechanism with a locking ring as claimed in claim 1, wherein: the included angle between the inclined surface (21) of the locking ring (2) and the vertical surface is 10-30 degrees.
4. A sealing mechanism with a locking ring as claimed in claim 1, wherein: the telescopic screw (5) comprises a spring (51), a screw (52) and a compression nut (53); the inner wall of the counter bore is provided with threads; the compression nut (53) is engaged with the threads and blocks the spring (51) and the screw (52) in the counter bore.
5. A sealing mechanism with a locking ring according to claim 4, wherein: the head of the screw (52) is positioned in the counter bore, and the other end of the screw extends out after penetrating through the compression nut (53); the spring (51) is positioned on one side of the screw (52) far away from the compression nut (53); the spring (51) presses the head of the screw (52) against the compression nut (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701688.1U CN214498983U (en) | 2021-04-07 | 2021-04-07 | Sealing mechanism with locking ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701688.1U CN214498983U (en) | 2021-04-07 | 2021-04-07 | Sealing mechanism with locking ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214498983U true CN214498983U (en) | 2021-10-26 |
Family
ID=78202060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120701688.1U Active CN214498983U (en) | 2021-04-07 | 2021-04-07 | Sealing mechanism with locking ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214498983U (en) |
-
2021
- 2021-04-07 CN CN202120701688.1U patent/CN214498983U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215215169U (en) | Transport pipe way that stability is strong for hydraulic engineering | |
| CN115788538B (en) | Constant-resistance large-deformation hollow grouting-resin coupling anchoring anchor rod | |
| CN110617026B (en) | Downhole operation device and method | |
| CN104775760A (en) | Multi-hydraulic-cylinder driving type top-drive casing pipe feeding tool | |
| CN214498983U (en) | Sealing mechanism with locking ring | |
| CN112253002B (en) | Drilling rod with axial deep groove wear-resistant joint for well drilling | |
| CN113404954A (en) | Underwater bolt pre-tightening telescopic connector | |
| CN2176427Y (en) | Locking casinghead | |
| CN113530486B (en) | Oil recovery well head seal structure | |
| CN202531059U (en) | Pipe column compression device | |
| CN214303721U (en) | Drilling rod with axial deep groove wear-resistant joint for well drilling | |
| CN115046011A (en) | Sealing assembly and oil pipe hanger | |
| CN204116026U (en) | A kind of hydrostatic test device for H4 profile | |
| CN113236163A (en) | Mechanical rotation seat sealing type leather cup packer | |
| CN211173996U (en) | Novel rotary hydraulic slip convenient for overhaul | |
| CN216077900U (en) | Hydraulic tight-fitting bolt | |
| CN111734339B (en) | Hydraulic retrievable packer with large drift diameter | |
| CN216938745U (en) | Novel saw blade locking device | |
| CN214816805U (en) | Novel small hole drilling tool for water inlet section of QY submersible pump | |
| CN216477219U (en) | Hydraulic control type mounting tool suitable for ocean mining riser | |
| CN219853098U (en) | Ultra-thin double-acting hydraulic stretcher | |
| CN217977348U (en) | Sealing assembly and oil pipe hanger | |
| CN216588535U (en) | Negative pressure suction device | |
| CN219365959U (en) | Anti-loose device for short joint of water tap | |
| CN220522529U (en) | Novel quick connection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230505 Address after: No. 16, Xihenggang Street, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215138 Patentee after: Suzhou Dawson Drilling and Production Equipment Co.,Ltd. Address before: 215137 Taiping Town, Suzhou, Jiangsu, Xiangcheng District Patentee before: SUZHOU DOUSON DRILLING & PRODUCTION EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |