CN211974922U - Plug for underwater vertical hole, mounting tool for plug and recovery tool for plug - Google Patents
Plug for underwater vertical hole, mounting tool for plug and recovery tool for plug Download PDFInfo
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- CN211974922U CN211974922U CN202020598044.XU CN202020598044U CN211974922U CN 211974922 U CN211974922 U CN 211974922U CN 202020598044 U CN202020598044 U CN 202020598044U CN 211974922 U CN211974922 U CN 211974922U
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- blanking plug
- recovery
- sleeve
- tool
- plug body
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Abstract
The utility model relates to a blanking plug is used in vertical hole under water, include: the blanking plug comprises a blanking plug body, wherein a locking clamping tooth is movably mounted on the side wall of the blanking plug body, the blanking plug body is provided with a blind hole coaxial with the blanking plug body, the bottom of the blind hole is provided with an installation clamping groove used for being clamped with an installation tool, and the diameter of the installation clamping groove is smaller than that of the blind hole; one end of the actuating sleeve is inserted into the blind hole and coaxially mounted on the blanking plug body, the actuating sleeve is in sliding connection with the locking clamping tooth, the assembling contact surface of the actuating sleeve and the locking clamping tooth is 4 degrees, and the other end, which can extend out of the blanking plug body, of the actuating sleeve is provided with a recovery clamping groove used for being clamped with a recovery tool; and the sealing assembly is arranged at one end of the blanking plug body, which is used for plugging the vertical hole.
Description
Technical Field
The utility model relates to a blanking plug, concretely relates to vertical hole is with blanking plug under water, mounting tool for blanking plug and retrieve the instrument.
Background
The underwater horizontal Christmas tree is one of main equipment of an underwater production system and is mainly used for exploiting ocean oil and gas resources. In the process of carrying out well completion operation on an underwater production system, the underwater horizontal Christmas tree needs to use a vertical hole plug to complete the final well completion operation, so that a corresponding underwater installation operation tool is needed to complete the installation operation of the plug; during the workover operation or the maintenance process of the blanking plug of the underwater production system, a corresponding underwater recovery operation tool is needed to complete the recovery operation of the blanking plug.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a blanking plug for vertical hole and operation instrument thereof realizes the sealed of the relevant device centre bore of horizontal production tree under water through blanking plug for vertical hole to can use corresponding specialized tool to realize the installation under water and retrieve the work of blanking plug.
In order to accomplish the above object, the utility model provides an under water vertical hole is with blanking plug, include: the blanking plug comprises a blanking plug body, wherein a locking clamping tooth is movably mounted on the side wall of the blanking plug body, the blanking plug body is provided with a blind hole coaxial with the blanking plug body, the bottom of the blind hole is provided with an installation clamping groove used for being clamped with an installation tool, and the diameter of the installation clamping groove is smaller than that of the blind hole; one end of the actuating sleeve is inserted into the blind hole and coaxially mounted on the blanking plug body, the actuating sleeve is in sliding connection with the locking clamping tooth, the assembling contact surface of the actuating sleeve and the locking clamping tooth is 4 degrees, and the other end, which can extend out of the blanking plug body, of the actuating sleeve is provided with a recovery clamping groove used for being clamped with a recovery tool; and the sealing assembly is arranged at one end of the blanking plug body, which is used for plugging the vertical hole.
Preferably, the seal assembly comprises a metal main seal and a non-metal secondary seal, the metal main seal is located at one end of the plug body, and the non-metal secondary seal sleeve is arranged at one end of the plug body.
Further preferably, the metal main seal is an N-type seal, and the angle of the guide included angle is 35 degrees.
Further preferably, the nonmetal secondary seal comprises a main seal ring, an auxiliary seal ring, a buffer ring and a metal support framework, wherein the main seal ring is positioned in the middle and is sequentially arranged outwards to form the auxiliary seal ring, the buffer ring and the metal support framework.
The utility model also provides a mounting tool for the blanking plug, the foretell blanking plug of blanking plug, mounting tool include the mounting tool body, and the mounting tool body is installed and is connected cap, installation dabber and lower part jack catch with the coaxial installation of mounting tool body, and the one end spiro union of cap and mounting tool body is connected in the installation, and the installation dabber is worn out behind the other end of mounting tool body and lower part jack catch spiro union from the one end of mounting tool body, and the lower part jack catch passes behind the actuating sleeve and installation draw-in groove joint.
Preferably, the other end of the mounting tool body is further provided with a self-locking structure for supporting the recovery clamping groove, the self-locking structure comprises a self-adaptive spring and upper clamping teeth, and the self-adaptive spring is used for supporting the upper clamping teeth.
The utility model also provides a recovery instrument for blanking plug, the above-mentioned blanking plug of blanking plug, the recovery instrument includes: recovering the connecting cap; the recovery mandrel is connected with one end of the recovery mandrel through a recovery connecting cap; the upper spring sleeve is in pin joint with the recovery mandrel, one end of the upper spring sleeve is in threaded connection with the outer sleeve, an upper spring is arranged in the upper spring sleeve, and the upper spring is sleeved on the recovery mandrel; and the excitation type slips are arranged on the recovery mandrel and can be clamped on an actuating sleeve of the blanking plug.
Preferably, the excitation type slip comprises a lower spring sleeve, a lower spring, a blocking ring and a slip, wherein the lower spring sleeve and the slip are all sleeved on the recovery mandrel, the lower spring and the blocking ring are all sleeved on the lower spring sleeve, one end of the lower spring sleeve is abutted against the upper spring, one end of the blocking ring is abutted against the lower spring, the other end of the blocking ring is abutted against the slip, and the slip can be clamped on an actuating sleeve of the blanking plug.
The utility model has the advantages that: in the working process, the actuating sleeve is vibrated to move downwards, so that the locking clamping teeth are extruded outwards, the locking clamping teeth are clamped in the locking clamping groove of the vertical hole, and the purpose of blocking the vertical hole is achieved. Secondly, the utility model discloses be provided with certain direction contained angle at the front end of blanking plug, this direction contained angle realizes the direction centering by oneself under the action of gravity to reach the blanking plug mounted position to relevant device.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a cross-sectional view of the blanking plug of the present invention;
FIG. 2 is a cross-sectional view of the installation tool of the present invention;
FIG. 3 is a cross-sectional view of the retrieval tool of the present invention;
FIG. 4 is a position diagram of the recycle chute of the installation tool before vibration;
FIG. 5 is a position diagram of the recycling slot after the installation tool of the present invention vibrates;
fig. 6 is a sectional view showing a state of use of the recovery tool of the present invention.
Description of the reference numerals
10. A vertical hole; 11. locking the clamping groove;
100. a blanking plug;
110. a plug body; 111. installing a clamping groove; 115. blind holes; 120. an actuation sleeve;
121. actuating the sleeve assembly interface; 122. a recovery card slot;
130. locking the clamping teeth; 131. locking the clamping tooth assembly contact surface; 140. a seal assembly;
141. a metal primary seal; 142. non-metal secondary sealing;
1421. a metal support skeleton; 1422. a buffer ring; 1423. an auxiliary seal ring;
1424. a primary seal ring;
200. installing a tool;
210. installing a connecting cap; 220. installing a mandrel; 230. a self-locking structure;
231. a compliant spring; 232. the upper part is clamped with teeth; 240. a lower jaw;
250. installing a tool body;
300. a recovery tool;
310. recovering the connecting cap; 320. recovering the mandrel; 330. an upper spring sleeve;
340. an outer sleeve; 341. an upper spring; 350. an excitation type slip;
351. a lower spring sleeve; 352. a lower spring; 353. a baffle ring; 354. slips;
3541. a claw is provided.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, the present embodiment provides an underwater vertical bore plug comprising a plug body 110, an actuating sleeve 120, and a seal assembly 140. The blanking plug body 110 is provided with a blind hole 115 coaxial with the blanking plug body 110, the bottom of the blind hole 115 is provided with an installation clamping groove 111 clamped with the installation tool 200, and the diameter of the installation clamping groove 111 is smaller than that of the blind hole 115. The side wall of the blanking plug body 110 is movably provided with a locking tooth 130, and the locking tooth 130 can be clamped into a locking groove of the vertical hole 10 (as shown in fig. 4 and 5), so that the blanking plug body 110 is clamped into the vertical hole 10, in this embodiment, four locking teeth 130 are uniformly distributed on the blanking plug body 110. The actuating sleeve 120 is movably installed in the blanking plug body 110 through the blind hole 115, wherein the actuating sleeve 120 can be connected with the locking latch 130 in a sliding fit manner, the assembling contact surface of the actuating sleeve 120 and the locking latch 130 is 4 degrees, and the other end, which can extend out of the blanking plug body, of the actuating sleeve 120 is provided with a recovery slot 122 for clamping with a recovery tool 300. In this embodiment, when the actuating sleeve 120 moves downward, since the assembling contact surface of the actuating sleeve 120 and the locking teeth 130 is an inclined surface, the actuating sleeve 120 will press the locking teeth 130 outward, so that the locking teeth 130 can be engaged in the locking grooves 11 of the vertical hole 10 (as shown in fig. 4), thereby engaging the plug 100 in the vertical hole 10. When the actuating sleeve 120 is moved upwards, the locking dogs 130 will contract inwards, so that the locking dogs 130 are thereby disengaged from the locking grooves 11, allowing the blanking plug to be removed from the vertical bore 10. In this embodiment, the inclination of the actuation sleeve fitting contact surface 121 is 4 degrees, and the inclination of the locking dog fitting contact surface 131 is 4 degrees, at which the static friction force applied to the part cannot be larger regardless of the external load applied to the part, so that self-locking is realized. That is, when the actuating sleeve 120 descends, the locking teeth 130 are spread apart to lock the blanking plug 100 in the vertical hole 10, and at this time, the 4-degree assembling contact surface is self-locked under the action of the friction force between the actuating sleeve 120 and the locking teeth 130, that is, no accident occurs because the locking teeth 130 shrink under the action of the lower fluid pressure of the blanking plug 100, so that the blanking plug 100 is unlocked by itself.
One end of the blanking plug body 110 is provided with a sealing assembly 140, and the front end of the sealing assembly 140 is provided with a guide included angle. Specifically, in the present embodiment, as shown in fig. 1, the seal assembly 140 includes a metal primary seal 141 and a non-metal secondary seal 142. The metal primary seal 141 is located at one end of the plug body 110, and the non-metal secondary seal 142 is sleeved at one end of the plug body 110. In the present embodiment, as shown in fig. 1, the metal primary seal 141 is an N-type metal seal (the head of the metal primary seal resembles the letter "N", and is therefore referred to as an N-type metal seal), and is sealed with the associated vertical hole 10 by its own elastic deformation, when the metal primary seal 141 seals, the associated sealing surface of the vertical hole 10 presses the N-type sealing structure radially inward, and at this time, the N-type sealing structure of the metal primary seal 141 elastically deforms against the inward radial force, and is sealed with the corresponding sealing surface. In addition, the self-guiding mechanism of the blanking plug 100 of the present embodiment is funnel-shaped (i.e. the metal main seal 141 is funnel-shaped), the guiding included angle is about 35 ° (the guiding angle of 35 ° is the optimal guiding angle of the blanking plug, and experiments prove that too large or too small angle is not beneficial to the installation operation of the blanking plug 100), and during the blanking process of the blanking plug 100 in the related vertical hole 10, the self-guiding centering is realized under the action of gravity by mainly depending on the guiding included angle, so as to reach the installation position of the blanking plug 100 of the related device.
In this embodiment, as shown in fig. 1, the non-metal secondary seal 142 includes a main seal 1424, an auxiliary seal 1423, a buffer ring 1422 and a metal supporting skeleton 1421, wherein the main seal 1424 is located at a middle portion and is sequentially arranged as the auxiliary seal 1423, the buffer ring 1422 and the metal supporting skeleton 1421. Non-metallic secondary seal 142 may effect a two-way seal, and when metallic primary seal 141 fails, non-metallic secondary seal 142 acts as a secondary barrier to effect a seal again. As can be seen from the above description and in conjunction with fig. 1, the primary metal seal 141 is both a self-guiding mechanism for the obturator 100 and a supporting mechanism for the secondary non-metal seal 142.
As shown in fig. 2, the present embodiment provides an installation tool for an obturator, the installation tool 200 includes an installation tool body 250, and the installation tool body 250 is installed with an installation connection cap 210, an installation mandrel 220, a self-locking structure 230 and a lower jaw 240 which are coaxial with the installation tool body 250. Wherein, one end of the installation connection cap 210 is connected with the jar (this kind of device belongs to common device on the drilling platform, belongs to the existing structure, and its structure is not described in detail in this embodiment), the installation connection cap 210 is connected with one end spiro union of the installation tool body 250, the installation mandrel 220 is threaded with the lower part jack catch 240 after penetrating out the other end of the installation tool body 250 from one end of the installation tool body 250, the lower part jack catch 240 can be blocked in the installation clamping groove 111 of the blanking plug 100. In the present embodiment, the self-locking structure 230 includes a compliant spring 231 and an upper latch 232, and the compliant spring 231 is used to support the upper latch 232.
As shown in fig. 4, when the installation tool 200 is used, the lower jaws 240 of the installation tool 200 are elastically deformed to be radially contracted when subjected to a radially compressive force, so that the lower jaws 240 can enter the matching installation slots 111 of the blanking plug 100. After the lower jaw 240 enters the installation slot 111, the lower jaw 240 is restored to the original state, so that the lower jaw 240 is automatically locked in the installation slot 111, and the underwater installation tool 200 is locked and connected with the blanking plug 100. The upper clamping teeth 232 of the installation tool 200 can keep the blanking plug 100 in an unlocked state under the action of the adaptive spring 231 so as to ensure that the blanking plug 100 can be locked and installed at a specified position. The mounting connection cap 210 of the mounting tool 200 is connected to the jar at the lower part of the working wire rope, when the blanking plug 100 is lowered to a specified position, the working wire rope connected to the working platform is cyclically lifted and released by manually controlling the wire rope working device in such a convenient and fast operation manner that the jar is used for underwater mounting of the mounting tool (the lifting and releasing of the jar are realized by the wire rope working device of the working platform, which is common on a drilling platform) so as to activate the actuating sleeve 120 of the blanking plug 100 to prop the locking teeth 130 downwards to realize the locking mounting of the blanking plug 100 in the vertical hole 10.
In addition, it should be noted that during the lowering of the plug 100 into the vertical hole 10, the installation tool 200 will suspend the actuating sleeve 120 of the plug 100, so that the actuating sleeve 120 is kept at the upward position, and the locking teeth 130 are not activated, so that the locking teeth 130 are kept in the contracted state. When the obturator 100 is lowered to the installation position, the setting tool 200 has not been jarred at this time, so the actuating sleeve 120 remains in the up position, at which time the locking dogs 130 have not been activated to continue to remain in the retracted state (as shown in FIG. 4). Specifically, in the present embodiment, after the installation tool 200 is installed on the blanking plug 100, the lower jaws 240 are clamped into the installation slot 111, and the recycling slot 122 of the actuating sleeve 120 passes through the upper teeth 232 of the self-locking device 230, so that the recycling slot 122 of the actuating sleeve 120 is supported by the upper teeth 232, and the actuating sleeve 120 is prevented from moving downward under the blanking plug 100. After the plug 100 is lowered into the vertical hole 10, the jar blows to move the actuating sleeve 120 downward, thereby pressing the locking teeth 130 outward, so that the plug 100 is locked in the vertical hole 10. During downward movement of the actuation sleeve 120, the retraction slot 122 will compress the upper latch 232 causing the adaptive spring 231 to compress so that it does not cause upward movement of the actuation sleeve 120 when the installation tool 200 is retracted.
As shown in fig. 6, the present embodiment also provides a recovery tool 300 for an obturator including a recovery connector cap 310, a recovery mandrel 320, an upper spring sleeve 330, an outer sleeve 340, and an energized slip 350. Wherein, one end of the recovery connection cap 310 is connected with the jar, and one end of the recovery mandrel 320 is connected with the other end of the recovery connection cap 310. The upper spring sleeve 330 is pinned with the recovery mandrel 320, one end of the upper spring sleeve 330 is screwed with the outer sleeve 340, an upper spring 341 is arranged in the upper spring sleeve 330, the upper spring 341 is sleeved on the recovery mandrel 320, and the upper spring 341 is connected with the excitation type slip 350. Excited slips 350 are mounted on the recovery mandrel 320, and the excited slips 350 can be snapped onto the actuating sleeve 120 of the plug 100. Specifically, the excited slip 350 includes a lower spring sleeve 351, a lower spring 352, a retainer ring 353, and a slip 354. The lower spring sleeve 351 and the slips 354 are sleeved on the recovery mandrel, the lower spring 352 and the retaining ring 353 are sleeved on the lower spring sleeve 351, one end of the lower spring sleeve 351 is abutted against the upper spring 341, one end of the retaining ring 353 is abutted against the lower spring 352, the other end of the retaining ring 353 is abutted against the slips 354, and the slips 354 can be clamped on the actuating sleeve 120 of the blanking plug 100.
The recovery connection cap 310 of the recovery tool 300 of the blanking plug 100 is connected with the jar at the lower part of the working cable, after the recovery tool 300 is lowered to a designated position, the recovery tool 300 can be manually controlled to cyclically lift and release the jar on the working cable connected to the working platform, and the jar underwater installation working tool is shocked in a convenient and rapid operation mode, so that the slips 354 at the lower part of the recovery tool 300 are radially contracted at a certain inclination angle when being subjected to axial and radial pressing forces simultaneously (specifically, when the recovery tool 300 is moved downwards, the jaws 3541 at the bottom of the slips 354 are abutted against the jaws at the top of the actuating sleeve 120, so that the slips 354 are moved upwards along the recovery mandrel 320, namely, the jaws 354 are subjected to the pressing force in the axial direction, so that the lower spring 352 is contracted, and when the slips 354 continue to move upwards, the slips 354 are pressed in the radial direction by the jaws at the top of the actuating sleeve 120, thereby causing the dogs 3541 of the slips 354 to retract inwardly so that the dogs 3541 enter the retrieval slot 122 of the actuation sleeve 120) so that the dogs 3541 at the bottom of the slips 354 can lock into the retrieval slot 122 of the actuation sleeve 120 of the blanking plug 100 to effect a locking connection of the retrieval tool 300 to the blanking plug 100, and then lifting the retrieval tool 300 so that the actuation sleeve 120 is raised so that the locking dogs 130 disengage from the locking slot 11 of the riser 10, and finally causing the blanking plug 100 to unlock from the riser 10 and retrieve it above the water surface.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (8)
1. An underwater vertical hole plugging device, comprising:
the blanking plug comprises a blanking plug body, wherein a locking clamping tooth is movably mounted on the side wall of the blanking plug body, the blanking plug body is provided with a blind hole coaxial with the blanking plug body, the bottom of the blind hole is provided with an installation clamping groove used for being clamped with an installation tool, and the diameter of the installation clamping groove is smaller than that of the blind hole;
one end of the actuating sleeve is inserted into the blind hole and coaxially mounted on the blanking plug body, the actuating sleeve is in sliding connection with the locking clamping teeth, the assembling contact surface of the actuating sleeve and the locking clamping teeth is 4 degrees, and a recovery clamping groove used for being clamped with a recovery tool is formed in the other end, which can extend out of the blanking plug body, of the actuating sleeve;
and the sealing assembly is arranged at one end of the blanking plug body, which is used for plugging the vertical hole.
2. The blanking plug for the underwater vertical hole according to claim 1, wherein the sealing assembly comprises a metal main seal and a non-metal secondary seal, the metal main seal is located at one end of the blanking plug body, and the non-metal secondary seal sleeve is arranged at one end of the blanking plug body.
3. The subsea vertical bore plug of claim 2, wherein the primary metal seal is an N-seal and the included guide angle is 35 degrees.
4. The underwater vertical hole plugging device according to claim 2, wherein the non-metal secondary seal comprises a main seal ring, an auxiliary seal ring, a buffer ring and a metal support framework, wherein the main seal ring is positioned in the middle and is sequentially arranged into the auxiliary seal ring, the buffer ring and the metal support framework outwards.
5. The mounting tool for the blanking plug is characterized by comprising a mounting tool body, wherein the mounting tool body is provided with a mounting connection cap, a mounting mandrel and a lower jaw which are coaxial with the mounting tool body, the mounting connection cap is in threaded connection with one end of the mounting tool body, the mounting mandrel penetrates out of one end of the mounting tool body and then is in threaded connection with the lower jaw, and the lower jaw is clamped with a mounting clamping groove after penetrating through an actuating sleeve.
6. The installation tool for the blanking plug according to claim 5, wherein the other end of the installation tool body is further provided with a self-locking structure for supporting the recovery clamping groove, the self-locking structure comprises a self-adaptive spring and upper clamping teeth, and the self-adaptive spring is used for supporting the upper clamping teeth.
7. A retrieval tool for an obturator, wherein the obturator is as claimed in any one of claims 1 to 5, the retrieval tool comprising:
recovering the connecting cap;
one end of the recovery mandrel is connected with the recovery connecting cap;
the upper spring sleeve is in pin joint with the recovery mandrel, one end of the upper spring sleeve is in screw joint with the external sleeve, an upper spring is arranged in the upper spring sleeve, and the upper spring is sleeved on the recovery mandrel;
and the excitation type slips are arranged on the recovery mandrel and can be clamped on an actuating sleeve of the blanking plug.
8. The recovery tool for a blanking plug according to claim 7, wherein the excited slip comprises a lower spring sleeve, a lower spring, a stop ring and a slip, the lower spring sleeve and the slip are sleeved on the recovery mandrel, the lower spring sleeve and the stop ring are sleeved on the lower spring sleeve, one end of the lower spring sleeve is abutted against the upper spring, one end of the stop ring is abutted against the lower spring, the other end of the stop ring is abutted against the slip, and the slip can be clamped on an actuating sleeve of the blanking plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598044.XU CN211974922U (en) | 2020-04-20 | 2020-04-20 | Plug for underwater vertical hole, mounting tool for plug and recovery tool for plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598044.XU CN211974922U (en) | 2020-04-20 | 2020-04-20 | Plug for underwater vertical hole, mounting tool for plug and recovery tool for plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211974922U true CN211974922U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020598044.XU Active CN211974922U (en) | 2020-04-20 | 2020-04-20 | Plug for underwater vertical hole, mounting tool for plug and recovery tool for plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211974922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803464A (en) * | 2021-08-25 | 2021-12-17 | 长江大学 | Crown-shaped metal sealing ring for underwater Christmas tree |
-
2020
- 2020-04-20 CN CN202020598044.XU patent/CN211974922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803464A (en) * | 2021-08-25 | 2021-12-17 | 长江大学 | Crown-shaped metal sealing ring for underwater Christmas tree |
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