CN219808980U - Hydraulic seat seal well sealing device - Google Patents
Hydraulic seat seal well sealing device Download PDFInfo
- Publication number
- CN219808980U CN219808980U CN202321216891.5U CN202321216891U CN219808980U CN 219808980 U CN219808980 U CN 219808980U CN 202321216891 U CN202321216891 U CN 202321216891U CN 219808980 U CN219808980 U CN 219808980U
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- Prior art keywords
- hole
- central tube
- packer
- cone
- anchor body
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- 238000007789 sealing Methods 0.000 title claims abstract description 48
- 210000000078 claw Anatomy 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 241000191291 Abies alba Species 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- ILAYIAGXTHKHNT-UHFFFAOYSA-N 4-[4-(2,4,6-trimethyl-phenylamino)-pyrimidin-2-ylamino]-benzonitrile Chemical compound CC1=CC(C)=CC(C)=C1NC1=CC=NC(NC=2C=CC(=CC=2)C#N)=N1 ILAYIAGXTHKHNT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The utility model discloses a hydraulic seat well sealing device, which comprises: an outer tube string and an inner tube string disposed inside thereof; the packer comprises: the inner central tube is arranged in the outer central tube, a connecting channel is arranged between the inner central tube and the outer central tube, and a first connecting through hole is formed in one end of the inner central tube along the radial direction; the anchor body is arranged outside one end of the inner central tube, one end of the anchor body is provided with a second connecting through hole along the axial direction, and the second connecting through hole is perpendicular to the first connecting through hole and is mutually communicated; a button assembly; a cone mechanism; a slip; the sealing rod is provided with a third connecting through hole along the radial direction, and the third connecting through hole can be communicated with the first connecting through hole. After liquid enters the connecting channel, the cone mechanism is pushed to move along the axial direction, so that the slips are expanded to bite the inner wall of the sleeve to seal the seat, and meanwhile, the liquid flows out of the anchor body, so that the wellhead is quickly sealed.
Description
Technical Field
The utility model relates to a hydraulic seat sealing well sealing device, and belongs to the field of downhole operation tools.
Background
The development of offshore oil and gas fields has very strict requirements on construction safety and environmental protection, long-time production leads to rust damage of a wellhead and a blowout preventer, and the wellhead and the blowout preventer need to be replaced with new ones for safety to continue production operation. When the wellhead and the blowout preventer are replaced, due to the lack of safety measures such as the wellhead blowout preventer, a temporary well sealing device is needed to be put into the well, and the well bore is plugged in a short time.
At present, a well sealing mode of an RTTS test packer and a storm valve is adopted, and the process needs to coordinate enough drill rods or drill collars to carry out counterweight setting of the RTTS test packer, so that the packer cannot be set due to insufficient counterweight, and a pipe column slides downwards, upwards and is in sealing failure and the like. The required pit shaft space of RTTS test packer setting is longer, if do not have sufficient drilling rod weight and sufficient pit shaft space, can't guarantee the completion of RTTS test packer setting, and RTTS packer setting is incomplete, and the suspension ability descends, has sealed effect poor, hangs inadequately, can't guarantee the effect of sealing the well or killing the well, and RTTS packer setting is incomplete, and storm valve running tool takes off the hand difficulty or can't take off the risk of hand, therefore uses the required space of this instrument and the required quantity requirement of drilling rod claim higher, if can not satisfy simultaneously will have well control risk. The presence of these problems also results in a greater risk of well control and environmental pollution at the time of offshore wellhead replacement. Therefore, a new temporary well closing and killing process and a matched tool pipe string are needed to perfect the replacement or wellhead treatment of the offshore wellhead, so as to solve the risks of well control safety and environmental pollution existing in the actual construction of the construction well.
Disclosure of Invention
The utility model designs and develops a hydraulic seat sealing well sealing device, which pushes a cone mechanism to move axially after liquid enters a connecting channel, so that a slip is expanded to bite the inner wall of a sleeve to seal the seat, and meanwhile, the liquid flows out of an anchor body through a ball tooth assembly, so that the anchor body expands the seat sealing, and the quick seat sealing of a wellhead is realized.
The technical scheme provided by the utility model is as follows:
a hydraulic seat seal well completion apparatus comprising:
an outer tube string and an inner tube string disposed inside thereof;
the outer tube string comprises a plurality of tubes connected in sequence in a threaded manner from one end to the other end: a packer, a leak valve, and a tieback joint;
the inner pipe string comprises a plurality of inner pipe strings which are sequentially connected in a threaded manner from one end to the other end: the device comprises a pressing plug, a sealing rod, a switching tool, a long connecting rod and a feeding tool;
the packer comprises:
the inner central tube is arranged in the outer central tube, and a connecting channel is arranged between the inner central tube and the outer central tube;
the packer upper joint is arranged on one section of the packer, and a first connecting through hole is formed in the packer upper joint along the radial direction;
the anchor body is in threaded connection with the upper joint of the packer, one end of the anchor body is provided with a second connecting through hole along the axial direction, and the second connecting through hole is perpendicular to the first connecting through hole and is communicated with the first connecting through hole;
the spherical tooth assembly is arranged on the anchor body and is communicated with the connecting channel;
the cone mechanism is arranged on the outer central tube and is close to the anchor body and can axially move along the central tube;
the slips are arranged on the outer central tube, are matched with the cone mechanism and can move along the circumferential direction of the central tube;
the sealing rod is provided with a third connecting through hole along the radial direction, and the third connecting through hole can be communicated with the first connecting through hole.
Preferably, the cone mechanism comprises:
a piston mechanism, one end of which is close to the anchor body;
one end of the rubber cylinder mechanism is connected with the piston mechanism;
one end of the cone is connected with the other end of the rubber cylinder mechanism, and the other end of the cone is of a cone structure arranged along the circumferential direction.
Preferably, the piston mechanism comprises:
an upper piston disposed on the outer center tube;
and the lower piston is connected with the upper piston through threads.
Preferably, the packing element mechanism includes:
a packing element bush disposed on the outer center tube;
the rubber cylinder is sleeved on the rubber cylinder bushing;
and the rubber cylinder baffle ring is sleeved on the bushing.
Preferably, one end of the cone is in contact with the rubber cylinder.
Preferably, the method further comprises:
the lower cylinder sleeve is arranged at one end of the outer central tube and is positioned between the anchor body and the lower piston;
and one end of the connecting rod is arranged in the connecting channel, and the other end of the connecting rod is arranged in the lower cylinder sleeve.
Preferably, one end of the leakage valve is provided with an elastic lock sleeve, and the other end of the leakage valve is provided with a ball valve assembly in a rotating mode.
Preferably, a switch claw is arranged in the middle of the switch tool and is matched with the elastic lock sleeve, so that the elastic lock sleeve can be driven to move along the axial direction, and the ball valve assembly is opened and closed.
The beneficial effects of the utility model are as follows:
the utility model is mainly used for solving the problem that temporary well sealing is needed when the wellhead and the christmas tree are replaced, and reliable sealing between the temporary well sealing device and the casing can be realized through the well sealing device in the temporary well sealing operation pipe column; the high sealing pressure can be realized, the well control problem caused by safety measures such as no wellhead blowout preventer and the like is prevented, and the safety production is ensured.
The hydraulic seat sealing well sealing device provided by the utility model can realize temporary well sealing, can rapidly and efficiently realize sleeve sealing, can realize rapid recovery of the device, improves the working efficiency of construction operation, and ensures well control safety in the construction process.
Drawings
Fig. 1 is a schematic view of the running tool according to the present utility model.
FIG. 2 is a schematic diagram of a leak valve according to the present utility model.
FIG. 3 is a schematic view of the structure of the packer of the present utility model.
Fig. 4 is a schematic structural view of the switch tool according to the present utility model.
Fig. 5 is a schematic structural view of a seat seal rod according to the present utility model.
Fig. 6 is a schematic structural view of the tamponade according to the present utility model.
Fig. 7 is a schematic structural view of the retrieving tool according to the present utility model.
Fig. 8 is a schematic structural diagram of an inner tube string according to the present utility model.
Fig. 9 is a schematic view of the structure of the inner tube string in the outer tube string according to the present utility model.
FIG. 10 is a cross-sectional view of a sealing rod in a packer according to the present utility model.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
As shown in fig. 1-10, the present utility model provides a hydraulic seat seal well device, comprising: a running tool 201, a long connecting rod 202, a leak valve 203, a packer 204, a switching tool 205, a set seal rod 206, a swage plug 207, and a retrieval tool 208.
The hydraulic seat seal well sealing device comprises an outer pipe string and an inner pipe string arranged inside the outer pipe string, wherein the outer pipe string comprises a plurality of threaded connections in sequence from one end to the other end: a packer 204, a leak-off valve 203, and a tieback joint;
the inner tube cluster is from one end to the other end including threaded connection in proper order: a crimp plug 207, a seat seal rod 206, a switch tool 205, a long connecting rod 202, and a running tool 201.
As shown in fig. 1, a running tool 201 of a hydraulic subsea well-sealing device includes: the upper joint 001, the O-shaped ring 002, the O-shaped ring retainer ring 003, the O-shaped ring 004, the O-shaped ring retainer ring 005, the O-shaped ring 006, the O-shaped ring 007, the shearing pin 008, the hand-free piston 009, the tie-back claw 010, the supporting rod 011, the baffle ring 012 and the upper connecting rod 013 are fed; the upper joint 001 passes through threaded connection with upper connecting rod 013, and the piston 009 that takes off hand overlaps in sending into upper joint 001 and upper connecting rod 013 to shearing pin 008 is connected with upper joint 001, and tieback claw 010 passes through threaded connection with sending into upper joint 001, and the support ring 011 overlaps on piston 009 that takes off hand, and the baffle ring 012 overlaps on upper connecting rod 013 and passes through threaded connection with piston 009 that takes off hand.
As shown in fig. 2, the leak-off valve 203 of the hydraulic seat seal well device includes: a leak valve upper joint 301, a locking outer cylinder 302, an elastic lock sleeve 303, a connecting spindle 304, a connecting outer cylinder 305, a ball valve outer cylinder 306, a ball cage 307, an operation pin assembly 308, a ball seat assembly 309, a ball valve assembly 310, and a leak valve lower joint 311; the upper leakage valve connector 301 is in threaded connection with the outer locking cylinder 302, the outer locking cylinder 302 is in threaded connection with the outer connecting cylinder 305, the outer ball valve cylinder 306 is in threaded connection with the outer connecting cylinder 305, the lower leakage valve connector 311 is in threaded connection with the outer ball valve cylinder 306, the elastic lock sleeve 303 is in threaded connection with the connecting mandrel 304, the operating pin assembly 308 is in groove connection with the connecting mandrel 304, the ball seat assemblies 309 are arranged at two ends of the ball valve assembly 310, and the ball valve assembly 310 rotates at the middle position of the two ball seat assemblies 309.
As shown in fig. 3, the packer 204 of the hydraulic set forth well seal apparatus includes: packer upper sub 401, screw 402, O-ring 403, anchor 404, O-ring 405, O-ring 406, inner center tube 407, screw 408, press piece 409, spring 410, button assembly 411, button backing 412, O-ring 413, connecting rod 414, O-ring 415, O-ring 416, outer center tube 417, lower cylinder jacket 418, O-ring 419, O-ring 420, upper piston 421, O-ring 422, lower piston 423, lock ring 424, set copper pin 425, O-ring 426, rubber 427, rubber retainer 428, rubber bushing 429, cone 430, spring washer 431, hex nut 432, screw 433, inner hex cylinder head screw 434, slips, slip jacket 436, male stop 437, pin 438, release sleeve 439, unset copper pin 440, and lower sub 441; the upper leakage valve joint 401 is connected with the anchor body 404 and the inner central tube 407 through threads; screw 402 is threadably coupled to anchor 404; screw 408 and anchor 404 are screwed to fix tablet 409; spring 410 is mounted within the internal cavity of button assembly 411; the button assembly 411 is mounted within the interior cavity of the anchor 404; the ball tooth backing ring 412 is arranged at the bottom of the ball tooth assembly 411; two ends of the connecting rod 414 are respectively inserted into the axial cavities of the anchor body 404 and the lower cylinder sleeve 418; the outer central tube 417 is connected with the lower cylinder sleeve 418 through threads; the upper piston 421 is sleeved on the outer central tube 417 and is connected with the lower piston 423 through threads; the lock ring 424 is sleeved outside the outer central tube 417, and two axial ends of the lock ring are respectively contacted with the upper piston 421 and the lower piston 423; the seat copper pin 425 is connected with the lower cylinder sleeve 418 and the lower piston 423 through threads; the rubber cylinder 427 is sleeved on the rubber cylinder bushing 429; the rubber stopper 428 is on the rubber bushing 429; cone 430 is sleeved on rubber sleeve 429; cone 430 is threadably connected to screw 433; the slip sheath 436 is threadably connected to the screw 433; the release sleeve 439 is connected with the screw 433 through threads; the elastic washer 431 and the hexagonal nut 432 are sleeved on the screw 433; slips 435 are sleeved on the outer central tube 417; the male stopper 437 is embedded in the groove of the outer center tube 417 and connected by a pin 438; the unsealed copper pin 440 is screwed with the outer center tube 417 and the inner center tube 407; the lower connector 441 is screwed to the inner central tube 407. Wherein, upper piston 421 and lower piston 423 constitute a piston mechanism, and rubber sleeve 429, rubber sleeve 427, and rubber baffle 428 constitute a rubber mechanism, and the piston mechanism, rubber mechanism, and cone constitute a cone mechanism.
As shown in fig. 4, the switching tool 205 of the hydraulic seal-in-seat well device includes: a switch upper joint 501, a sheath 502, a switch claw 503, a shear ring 504, a slotted copper pin 505 and a switch lower joint 506. The upper joint 501 is connected with the sheath 502 through threads; the switch claw 503 is sleeved outside the upper joint 501; the shear ring 504 is sleeved outside the switch upper joint 501; slotted copper pin 505 threadably connects shear ring 504 and upper sub 501; the switch lower connector 506 is screwed with the upper connector.
As shown in fig. 5, the seat seal rod 206 of the hydraulic seat seal well device includes: a sealing joint 601, a sealing rod 602 and a vulcanizing ring 603. The sealing joint 601 is connected with the sealing rod 602 through threads; the vulcanizing ring (603) is sleeved outside the sealing rod 602.
As shown in fig. 6, the swage plug 207 of the hydraulic seat seal well device includes: a swage plug 701, an outer barrel 702, a shear sleeve 703, steel balls 704, ball seats 705, shear pins 706, a baffle 707, and a swage plug 708. The plunger upper connector 701 is connected with the outer cylinder 702 through threads; the shear sleeve 703 is embedded inside the outer cylinder 702; ball seat 705 is embedded inside shear sleeve 703; the shear pin 706 is in threaded connection with the shear sleeve 703; the steel ball 704 falls on the conical surface of the ball seat 705; the baffle 707 is embedded inside the outer cylinder 702 and is tightly attached to the tamponade lower joint 708; the tamponade lower adapter 708 is threadably coupled to the outer barrel 702.
As shown in fig. 7, the retrieval tool 208 of the hydraulic block well sealing device is composed of an upper joint 801, a tieback claw 802, an upper connecting rod 803, a vulcanized ring 804 and a lower joint 805. The upper joint 801 is connected with the upper connecting rod 803 through threads; the tie-back claw 802 is embedded inside the upper joint 801; a vulcanizing ring 804 is sleeved outside the upper connecting rod 803; the lower joint 805 is screwed with the upper connecting rod 803.
As shown in fig. 10, in the packer 204, a connection channel 442 is provided between the inner central tube 407 and the outer central tube 417, a first connection through hole 443 is radially provided at one end of the upper joint 401, a second connection through hole 444 is axially provided at one end of the anchor body 404, the second connection through hole 444 is perpendicular to and mutually communicates with the first connection through hole 443, the second connection through hole is an axial cavity of the anchor body 404 and the lower cylinder liner 418, when the inner tube string is connected with the outer tube string, a sealing rod 206 is disposed in the packer 204, a third connection through hole 445 is radially provided on the sealing rod 206, and the third connection through hole 445 can communicate with the first connection through hole 443.
8-9, when the inner pipe string and the outer pipe string are connected, the inner pipe string is placed in the outer pipe string, the switch claw 503 on the switch tool moves axially in the leakage valve 203 of the outer pipe string to drive the leakage valve 203 to travel for switching of the ball valve assembly, so that the ball inside the ball valve assembly 310 rotates, and thus the opening and closing of the pipe are controlled, after the first connecting hole on the packer 204 is aligned and communicated with the third connecting hole on the sealing rod 206, liquid can flow between the first connecting through hole, the third connecting through hole and the second connecting through hole, the steel ball 704 is put into the inner pipe string by the inner pipe string, the steel ball 704 is put into the inner pipe string, the steel ball 704 falls on the inner conical surface of the pressing plug 207 to seal the bottom of the inner pipe string, the inner channel pushes the upper piston 421, the lower piston 423, the locking ring 424 and the rubber sleeve 429 together through hydraulic pressure, the rubber sleeve 427 is pushed to expand the seat, meanwhile, the rubber sleeve 487 is pushed by the cone 430 to move backwards to push 435 outwards, the inner wall 435 is pushed by the cone 435 to be snapped on the inner wall of the sleeve seat, and when the inner wall of the sleeve is tightly sealed by the anchor seat is tightly blocked by the liquid, and the inner sleeve 404 is firmly sealed inside the pipe string, and the inner sleeve 404 is sealed by the inner pipe seat is tightly sealed by the liquid; the setting of the packing 427 is from the top down fluid pressure of the string inside the packer 204, the setting of the slips 435 is from the thrust created by compression when the packing of the packing, pushing the slips 435 setting, and the setting of the anchors 404 is from the fluid pressure inside the bottom casing of the well.
Unhooking running tool: after the inner pipe string and the outer pipe string are connected, the inner pipe string and the outer pipe string are put into the well to be sent into a target position, at the moment, the ball valve of the switching tool 205 is in an open state, the steel ball 704 is put into, and the pressure is just pressed to the packer setting pressure; annulus pressurization of 10MPa, verifying the sealing performance of the packer 204 and the ball valve assembly 310; the right-hand pipe column is rotated for 10-12 circles (or pressurized for 20MPa to carry out hand-off), the pipe column can integrally run upwards at the moment, and the ball valve assembly 310 of the leakage valve 203 is closed by the switching tool 205 at the moment; continuing to build up, when the service string is lifted above the leak valve 203, the pressure is positive 24MPa, the seat ball seat 705 is sheared, and the spray pipe in the process of lifting the string is avoided.
Retrieval tool: the retrieving tool 208 is connected with the switching tool 205 and is sent in, and the ball valve assembly 310 of the leakage valve 203 is completely opened by the switching tool; continuing with the upper body retrieval tool 208, the packer's unset copper pin 440 is sheared, at which point the tool is fully pulled out of the well.
The utility model is mainly used for solving the problem that temporary well sealing is needed when the wellhead and the christmas tree are replaced, and reliable sealing between the temporary well sealing device and the casing can be realized through the well sealing device in the temporary well sealing operation pipe column; the high sealing pressure can be realized, the well control problem caused by safety measures such as no wellhead blowout preventer and the like is prevented, and the safety production is ensured.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. A hydraulic seat seal well completion apparatus, comprising:
an outer tube string and an inner tube string disposed inside thereof;
the outer tube string comprises a plurality of tubes connected in sequence in a threaded manner from one end to the other end: a packer, a leak valve, and a tieback joint;
the inner pipe string comprises a plurality of inner pipe strings which are sequentially connected in a threaded manner from one end to the other end: the device comprises a pressing plug, a sealing rod, a switching tool, a long connecting rod and a feeding tool;
the packer comprises:
the inner central tube is arranged in the outer central tube, and a connecting channel is arranged between the inner central tube and the outer central tube;
the packer upper joint is arranged on one section of the packer, and a first connecting through hole is formed in the packer upper joint along the radial direction;
the anchor body is in threaded connection with the upper joint of the packer, one end of the anchor body is provided with a second connecting through hole along the axial direction, and the second connecting through hole is perpendicular to the first connecting through hole and is communicated with the first connecting through hole;
the spherical tooth assembly is arranged on the anchor body and is communicated with the connecting channel;
the cone mechanism is arranged on the outer central tube and is close to the anchor body and can axially move along the central tube;
the slips are arranged on the outer central tube, are matched with the cone mechanism and can move along the circumferential direction of the central tube;
the sealing rod is provided with a third connecting through hole along the radial direction, and the third connecting through hole can be communicated with the first connecting through hole.
2. The hydraulic seal well equipment of claim 1, wherein the cone mechanism comprises:
a piston mechanism, one end of which is close to the anchor body;
one end of the rubber cylinder mechanism is connected with the piston mechanism;
one end of the cone is connected with the other end of the rubber cylinder mechanism, and the other end of the cone is of a cone structure arranged along the circumferential direction.
3. The hydraulic seal well equipment of claim 2, wherein the piston mechanism comprises:
an upper piston disposed on the outer center tube;
and the lower piston is connected with the upper piston through threads.
4. The hydraulic seal well equipment of claim 3, wherein the packing element mechanism comprises:
a packing element bush disposed on the outer center tube;
the rubber cylinder is sleeved on the rubber cylinder bushing;
and the rubber cylinder baffle ring is sleeved on the bushing.
5. The hydraulic seal of claim 4 wherein one end of the cone is in contact with the packing element.
6. The hydraulic seal well completion apparatus of claim 5, further comprising:
the lower cylinder sleeve is arranged at one end of the outer central tube and is positioned between the anchor body and the lower piston;
and one end of the connecting rod is arranged in the connecting channel, and the other end of the connecting rod is arranged in the lower cylinder sleeve.
7. The seat seal well equipment of claim 6, wherein one end of the leak-off valve is provided with an elastic lock sleeve, and the other end is provided with a ball valve assembly in a rotating manner.
8. The hydraulic seat seal well sealing device according to claim 7, wherein a switch claw is arranged in the middle of the switch tool and is matched with the elastic lock sleeve, and the switch claw can drive the elastic lock sleeve to move along the axial direction so as to open and close the ball valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321216891.5U CN219808980U (en) | 2023-05-19 | 2023-05-19 | Hydraulic seat seal well sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321216891.5U CN219808980U (en) | 2023-05-19 | 2023-05-19 | Hydraulic seat seal well sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219808980U true CN219808980U (en) | 2023-10-10 |
Family
ID=88215522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321216891.5U Active CN219808980U (en) | 2023-05-19 | 2023-05-19 | Hydraulic seat seal well sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219808980U (en) |
-
2023
- 2023-05-19 CN CN202321216891.5U patent/CN219808980U/en active Active
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