CN206545488U - The vertical land hoisting tool of production tree - Google Patents

The vertical land hoisting tool of production tree Download PDF

Info

Publication number
CN206545488U
CN206545488U CN201720168230.8U CN201720168230U CN206545488U CN 206545488 U CN206545488 U CN 206545488U CN 201720168230 U CN201720168230 U CN 201720168230U CN 206545488 U CN206545488 U CN 206545488U
Authority
CN
China
Prior art keywords
production tree
hole
clamping
claw
push rod
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.)
Withdrawn - After Issue
Application number
CN201720168230.8U
Other languages
Chinese (zh)
Inventor
王懿
叶晓节
叶天源
李文博
臧孟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING QIANWEI TECHNOLOGY GROUP Co Ltd
China University of Petroleum Beijing CUPB
Original Assignee
CHONGQING QIANWEI TECHNOLOGY GROUP Co Ltd
China University of Petroleum Beijing CUPB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHONGQING QIANWEI TECHNOLOGY GROUP Co Ltd, China University of Petroleum Beijing CUPB filed Critical CHONGQING QIANWEI TECHNOLOGY GROUP Co Ltd
Priority to CN201720168230.8U priority Critical patent/CN206545488U/en
Application granted granted Critical
Publication of CN206545488U publication Critical patent/CN206545488U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a kind of vertical land hoisting tool of production tree, and the vertical land hoisting tool of production tree includes:Body, is provided with the receiving space at least housing vertical production tree upper end, the outer wall of body and is provided through the radial direction through hole to receiving space;Push rod latch assembly, is arranged in radial direction through hole and can be slided to receiving space direction, and push rod latch assembly is with the locked position with vertical production tree clamping and the unlocked position bounced back in radial direction through hole;Claw connection component, is arranged on body, claw connection component can along body axial movement and with the drive rod clamping on vertical production tree.The beneficial effects of the utility model are, by setting push rod latch assembly and claw connection component to increase the coupling mechanism force to production tree, it is ensured that the lifting stability in hoisting process.

Description

The vertical land hoisting tool of production tree
Technical field
The utility model is related to lifting device field, specifically a kind of land hoisting tool of vertical production tree.
Background technology
The land hoisting tool of underwater vertical production tree is and the matching used erector of underwater vertical production tree tree management Tool.It can complete water jointly using the test of production tree and erection stage under water with subsea production tree tree body running tool The installment work of lower production tree.In the prior art it is general all using directly lift or carrier vehicle migrate by the way of vertical production tree Move.
Directly lifting directly bundlees above-mentioned vertical production tree generally by steel wire or lifting rope, and is hung by crane etc. The vertical production tree of arrangement moves.
Chinese utility model patent, Authorization Notice No. CN202953143U is May 29 2013 Granted publication date, public A kind of deep sea drilling production tree board migration device is opened, the device, which includes setting in carrier vehicle above deck, the carrier vehicle, to be provided with It can carry and drive device is provided with the accommodating cavity of production tree, the carrier vehicle, the drive device can drive carrier vehicle and first Plate relative motion.
The shortcoming of prior art:The lifting or migration operation of vertical production tree of the prior art are more unreliable, and And coupling mechanism force is poor.
Utility model content
The utility model provides a kind of vertical land hoisting tool of production tree, to reach the reliability of increase lifting and carry Rise coupling mechanism force.
The utility model solves the technical scheme that its technical problem used:A kind of land lifting work of vertical production tree Tool, the vertical land hoisting tool of production tree includes:Body, is provided with the receiving sky at least housing vertical production tree upper end Between, the radial direction through hole to receiving space is provided through on the outer wall of body;Push rod latch assembly, is arranged in radial direction through hole And can be slided to receiving space direction, push rod latch assembly is with the locked position with vertical production tree clamping and bounces back to footpath Unlocked position into through hole;Claw connection component, is arranged on body, claw connection component can along body axial movement And with the drive rod clamping on vertical production tree.
Further, body is provided with the clamping spacing hole connected with radial direction through hole, and push rod latch assembly includes:Push rod, It is arranged in radial direction through hole and can be slided relative to radial direction through hole;Flexible clamping limit assembly, is fixed and can be with push rod Clamping spacing hole clamping, flexible clamping limit assembly can limit push rod, and radially through hole is slided.
Further, limited impression is provided with push rod, flexible clamping limit assembly includes spring and steel ball, the one of spring End is fixed in limited impression, and the other end of spring is connected with steel ball, and steel ball can be with limited impression and clamping spacing hole clamping.
Further, body also includes release screw bolt, is arranged in clamping spacing hole, release screw bolt can eject steel ball Clamping spacing hole.
Further, push rod latch assembly is multiple, and multiple push rod latch assemblies are uniform along the circumference of body, each push rod One end be provided with clamping groove for being engaged by clamping with vertical production tree.
Further, push rod latch assembly also includes protection sleeve pipe, and protection sleeve pipe is set in the outside of the other end of push rod, The internal diameter of protection sleeve pipe is adapted with the external diameter of push rod, and cooperation spacing hole corresponding with limited impression is provided with protection sleeve pipe.
Further, claw connection component includes:Connecting rod, connecting rod is hollow rod-like structure, and connecting rod is arranged on this On body, connecting rod has been disposed radially claw through hole;Driving ring, is set in outside connecting rod, and driving ring can be relative to connecting rod Axis direction is moved;Claw, is arranged in claw through hole, and driving ring can drive claw along claw through hole to internal locking.
Further, be provided with external thread section in connecting rod, one end of driving ring is provided with coordinate with external thread section in Thread segment, the other end of driving ring is conical section, and the bigger diameter end of conical section is towards the outside of driving ring.
Further, draw ring is provided with claw, draw ring can pull out claw in claw through hole.
Further, claw connection component also includes hydraulic cylinder, and connecting rod is connected with hydraulic cylinder, and hydraulic cylinder being capable of the company of driving Extension bar is moved up and down along the axial direction of body.
The beneficial effects of the utility model are, by setting push rod latch assembly and claw connection component to increase to adopting The coupling mechanism force of oil tree, it is ensured that the lifting stability in hoisting process.
The utility model example structure is simple, locks rapid and convenient, and lifting is reliable and stable, can realize vertical production tree Quick locking and stable lifting, improve operating efficiency, reduce operation difficulty, to reducing cost, lifting security performance tool Make great sense.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model. In the accompanying drawings:
Fig. 1 is the structural representation of the land hoisting tool of the vertical production tree of the utility model;
Fig. 2 is Fig. 1 top view;
Fig. 3 is Fig. 1 upward view;
Fig. 4 is the land hoisting tool of the vertical production tree of the utility model and the assembling structure sectional view of vertical production tree;
Fig. 5 is A portions enlarged drawing in Fig. 4;
Fig. 6 is the structural representation of claw connection component in the land hoisting tool of the vertical production tree of the utility model;
Fig. 7 is the sectional view of driving ring in the land hoisting tool of the vertical production tree of the utility model;
Fig. 8 is the sectional view of claw connection component in the land hoisting tool of the vertical production tree of the utility model;
Fig. 9 is B portions enlarged drawing in Fig. 8.
Reference in figure:10th, body;11st, release screw bolt;12nd, hanger;13rd, pilot sleeve;20th, push rod latch assembly; 21st, push rod;22nd, spring;23rd, steel ball;24th, protection sleeve pipe;211st, clamping groove;30th, claw connection component;31st, connecting rod; 32nd, driving ring;33rd, claw;331st, big footpath section;332nd, path section;333rd, clamping ring;34th, draw ring;35th, hydraulic cylinder;40th, hydraulic pressure Pipeline;51st, pedestal is connected;52nd, positioning handle;60th, production tree.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 1 to 7, the utility model embodiment provides a kind of vertical land hoisting tool of production tree, vertical The land hoisting tool of production tree includes body 10, push rod latch assembly 20 and claw connection component 30.Body 10, which is provided with, to be used for At least house and be provided through the radial direction to receiving space on the receiving space of the vertical upper end of production tree 60, the outer wall of body 10 Through hole.Push rod latch assembly 20 is arranged in radial direction through hole and can slided to receiving space direction, and push rod latch assembly 20 has Have and the locked position of the vertical clamping of production tree 60 and the unlocked position bounced back in radial direction through hole.Claw connection component 30 is set On body 10, claw connection component can along body 10 axial movement and with the drive rod clamping on vertical production tree 60.
By setting push rod latch assembly 20 and claw connection component 30 to increase the coupling mechanism force to production tree, it is ensured that Lifting stability in hoisting process.In the utility model embodiment, push rod latch assembly 20 is multiple, multiple push rod lockings Component 20 is uniform along the circumference of body 10.
Body 10 is step structure, and the lower end of body 10 is provided with the radial flange being relatively large in diameter, in the radial flange On be provided with the clamping spacing hole connected with radial direction through hole, the clamping spacing hole is vertically set.Push rod latch assembly 20 Including push rod 21 and flexible clamping limit assembly.Push rod 21 is arranged in radial direction through hole and can slided relative to radial direction through hole. Flexible clamping limit assembly is fixed with push rod 21 and can limit and push away with clamping spacing hole clamping, flexible clamping limit assembly Radially through hole is slided bar 21.
In the utility model embodiment, limited impression is provided with push rod 21, flexible clamping limit assembly includes spring 22 With steel ball 23, one end of spring 22 is fixed in limited impression, and the other end of spring 22 is connected with steel ball 23, and steel ball 23 can be with Limited impression and clamping spacing hole clamping.
Preferably, body 10 also includes release screw bolt 11, is arranged in clamping spacing hole, release screw bolt 11 can be by steel ball 23 are unlocked with clamping spacing hole, i.e., steel ball 23 can be ejected clamping spacing hole by release screw bolt 11, enable push rod 21 radially Through hole is slided.
It should be noted that above-mentioned flexible clamping limit assembly is symmetricly set on the both sides of push rod 21, above-mentioned clamping is spacing The quantity in hole is corresponding with the quantity of flexible clamping limit assembly, and a release screw bolt is provided with each clamping spacing hole 11。
As shown in Figure 4 and Figure 5, one end of each push rod 21 is provided with the clamping for being engaged by clamping with vertical production tree 60 Groove 211.Push rod latch assembly 20 also includes protection sleeve pipe 24, and protection sleeve pipe 24 is set in the outside of the other end of push rod 21, The internal diameter of protection sleeve pipe 24 is adapted with the external diameter of push rod 21, and cooperation limit corresponding with limited impression is provided with protection sleeve pipe 24 Position hole.Above-mentioned protection sleeve pipe 24, which is arranged, to be fixed on outside the other end of push rod 21, and can be with the radially through hole of push rod 21 It is mobile.Above-mentioned steel ball 23 can limit protection sleeve pipe, and radially through hole is slided.
The utility model embodiment is in normality, and the push rod 21 of push rod latch assembly 20 is located in above-mentioned radial direction through hole and located In the unlocked position departed from vertical production tree 60.When needing vertical production tree 60 to be locked, by body 10 with it is vertical The upper end socket of production tree 60 coordinates.After the completion of positioning, push rod 21 is promoted to inner side, make the clamping groove 211 of push rod 21 with The vertical clamping of production tree 60 is spacing.Meanwhile, above-mentioned steel ball 23 is entered in the presence of spring 22 in clamping spacing hole matches somebody with somebody with it Close clamping.Now, because vertical production tree 60 gives the power of push rod 21 vertically downwards, but the radial load that push rod 21 is subject to It is smaller, therefore can be spacing using the fixed form of steel ball 23.Certainly, the fixed form is not limited to above-mentioned fixed form, than Such as spacing clamping directly can also be carried out using fixing bolt, i.e., fixing bolt is provided with clamping spacing hole, in push rod 21 With blocked hole is correspondingly arranged in protection sleeve pipe, passing through bolt and blocked hole clamping when needing positioning positions.
When needing unblock, steel ball 23 is ejected by clamping spacing hole by above-mentioned release screw bolt 11, makes push rod 21 and protection Sleeve pipe can be slidably now artificial to extract push rod 21 and protection sleeve pipe out, bounces back to push rod latch assembly 20 radially logical It is in hole and positioned at unlocked position.
As depicted in figs. 1 and 2, the upper end of body 10 is provided with the hanger 12 for lifting, and the hanger can connect lifting Steel wire.The lower section of body 10 is provided with pilot sleeve 13, the pilot sleeve 13 can vertical production tree 60 be oriented to, just The inside of body 10 is sheathed with vertical production tree 60.
Connection pedestal 51 and positioning handle 52 are provided with the side of body 10, one end of pedestal 51 and the side of body 10 is connected Wall is fixedly connected, and the other end of connection pedestal 51 is connected with positioning handle 52.Positioning handle 52 can be with the portion on vertical production tree 60 Part is positioned.In the utility model embodiment, it is provided with positioning hole, vertical production tree 60 and is provided with along perpendicular on positioning handle 52 Positioning tube from Nogata to setting, the positioning tube can with the positioning hole on positioning handle 52 coordinate position, with ensure installation accuracy and Clamping precision.
As shown in figures 1 to 6, claw connection component 30 includes connecting rod 31, driving ring 32 and claw 33.Connecting rod 31 is Hollow rod-like structure, connecting rod 31 is arranged on body 10, and connecting rod 31 has been disposed radially claw through hole.Driving ring 32 is arranged Outside connecting rod 31, driving ring 32 can be moved relative to the axis direction of connecting rod 31.Claw 33 is arranged in claw through hole, is driven Rotating ring 32 can drive claw 33 along claw through hole to internal locking.In the utility model embodiment, above-mentioned claw connection component 30 For four, along the circumferentially-spaced uniform of body 10.
Specifically, as shown in Figure 8 and Figure 9, above-mentioned claw 33 is stepped, and the claw 33 has the big footpath section being relatively large in diameter 331 and the less path section 332 of diameter, the big footpath section 331 of above-mentioned claw 33 can be completely disposed in above-mentioned claw through hole, above-mentioned The outside that path section 332 can be extend out on the inside of claw through hole, and can be with production tree drive rod clamping (not shown).
Preferably, in order to ensure that claw 33 will not be dropped out, it is provided with the utility model embodiment in the middle part of claw through hole Annular Access Division, direction from right to left in fig .9, above-mentioned big footpath section 331 and can limit claw 33 with annular Access Division clamping Displacement from right to left.Clamping ring 333 is detachably provided with above-mentioned path section 332, above-mentioned clamping ring 333 can be with annular Access Division coordinates clamping, and for limiting the displacement of claw 33 from left to right in Fig. 9.
When body 10 is docked with vertical production tree 60, above-mentioned claw connection component 30 can with vertical production tree 60 Production tree drive rod is docked and locked, and hoisting process can be made more to stablize, while above-mentioned claw connection component 30 can be tested Whether production tree drive rod can normally dock, it is to avoid unnecessary loss.
In the utility model embodiment, claw connection component 30 also includes hydraulic cylinder 35, and hydraulic cylinder 35 is fixed on body 10 On, above-mentioned connecting rod 31 is connected with hydraulic cylinder 35, hydraulic cylinder 35 can axial direction of the drive connection bar 31 along body 10 move up and down. Because above-mentioned claw connection component 30 is four, therefore hydraulic cylinder 35 also corresponds to four, and aforementioned four hydraulic cylinder 35 passes through liquid Pressure pipeline 40 is connected.
Set hydraulic cylinder 35, can drive connection bar 31 moved up and down along vertical direction so that complete and production tree drive The docking operation of lever.In the utility model embodiment, above-mentioned hydraulic cylinder 35 can be independent of one another, can also be mutually synchronized, root Different connected modes can be chosen according to different needs, no longer its connected mode and type of drive are repeated herein.
As shown in fig. 7, being provided with external thread section in connecting rod 31, one end of driving ring 32 is provided with to be coordinated with external thread section Internal thread segment, the other end of driving ring 32 is conical section, and the bigger diameter end of conical section is towards the outside of driving ring 32.
When driving ring 32 is moved downward along connecting rod 31, above-mentioned conical section contacts with claw 33 and extrudes claw towards card The inside movement of pawl through hole, because conical section internal diameter is gradually reduced, the length that claw 33 enters claw through hole is more and more, until Production tree is driven into rod locking.Above-mentioned thread segment sets conical section top in figure 6.
Specifically, draw ring 34 is provided with claw 33, draw ring 34 can pull out claw 33 in claw through hole.Above-mentioned card The draw ring groove for accommodating draw ring 34 is provided with pawl 33, need not be in use, can be accommodated in the draw ring recessed in draw ring 34 In groove, so as to avoid producing interference with driving ring 32.
After driving ring 32 is moved upward and departs from claw 33, claw 33 can be pulled out by draw ring 34, so that card Pawl 33 is unlocked with production tree drive rod.
As can be seen from the above description, the utility model the above embodiments realize following technique effect:
By setting push rod latch assembly and claw connection component to increase the coupling mechanism force to production tree, it is ensured that in lifting During lifting stability.
The utility model example structure is simple, locks rapid and convenient, and lifting is reliable and stable, can realize vertical production tree Quick locking and stable lifting, improve operating efficiency, reduce operation difficulty, to reducing cost, lifting security performance tool Make great sense.
It is described above, only specific embodiment of the utility model, it is impossible to which the scope that utility model is implemented, institute are limited with it With the displacement of its equivalent assemblies, or the equivalent variations made according to the utility model scope of patent protection and modification, it should all still fall within The category that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical scheme Between, can be used with independent assortment between technical scheme and technical scheme.

Claims (10)

1. a kind of land hoisting tool of vertical production tree, it is characterised in that the vertical land hoisting tool of production tree includes:
Body (10), is provided with the receiving space at least housing vertical production tree upper end, the outer wall of body (10) and sets There is the radial direction through hole being through in the receiving space;
Push rod latch assembly (20), is arranged in the radial direction through hole and can be slided to the receiving space direction, push-rod lock Tight component (20) is with the locked position with the vertical production tree clamping and the unlocked position bounced back in the radial direction through hole;
Claw connection component (30), is arranged on body (10), claw connection component can along body (10) axial movement simultaneously With the drive rod clamping on the vertical production tree.
2. the land hoisting tool of vertical production tree according to claim 1, it is characterised in that body (10) is provided with and footpath The clamping spacing hole connected to through hole, the push rod latch assembly (20) includes:
Push rod (21), is arranged in the radial direction through hole and can be slided relative to the radial direction through hole;
Flexible clamping limit assembly, fixes with push rod (21) and can be limited with the clamping spacing hole clamping, the flexible clamping Hyte part can limit push rod (21) and be slided along the radial direction through hole.
3. the land hoisting tool of vertical production tree according to claim 2, it is characterised in that push rod sets limited on (21) Position groove, the flexible clamping limit assembly includes spring (22) and steel ball (23), and one end of spring (22) is fixed on the limit In the groove of position, the other end of spring (22) is connected with steel ball (23), and steel ball (23) can be with the limited impression and the clamping Spacing hole clamping.
4. the land hoisting tool of vertical production tree according to claim 3, it is characterised in that body (10) also includes unblock Bolt (11), is arranged in the clamping spacing hole, and steel ball (23) can be ejected the clamping spacing hole by release screw bolt (11).
5. the land hoisting tool of vertical production tree according to claim 3, it is characterised in that push rod latch assembly (20) is Multiple, multiple push rod latch assemblies (20) are circumferential uniform along body (10), one end of each push rod (21) be provided with for The clamping groove (211) that the vertical production tree is engaged by clamping.
6. the land hoisting tool of vertical production tree according to claim 5, it is characterised in that push rod latch assembly (20) is also Including protection sleeve pipe (24), protection sleeve pipe (24) is set in the outside of the other end of push rod (21), the internal diameter of protection sleeve pipe (24) It is adapted with the external diameter of push rod (21), cooperation spacing hole corresponding with the limited impression is provided with protection sleeve pipe (24).
7. the land hoisting tool of vertical production tree according to any one of claim 1 to 6, it is characterised in that claw connects Connected components (30) include:
Connecting rod (31), connecting rod (31) is hollow rod-like structure, and connecting rod (31) is arranged on body (10), connecting rod (31) It has been disposed radially claw through hole;
Driving ring (32), is set in connecting rod (31) outside, and driving ring (32) can be moved relative to connecting rod (31) axis direction;
Claw (33), is arranged in the claw through hole, driving ring (32) can drive claw (33) along the claw through hole to Internal locking.
8. the land hoisting tool of vertical production tree according to claim 7, it is characterised in that connecting rod is provided with (31) External thread section, one end of driving ring (32) is provided with the internal thread segment coordinated with the external thread section, driving ring (32) it is another Hold as conical section, the outside of the bigger diameter end of the conical section towards driving ring (32).
9. the land hoisting tool of vertical production tree according to claim 7, it is characterised in that claw is provided with drawing on (33) Ring (34), draw ring (34) can pull out claw (33) in the claw through hole.
10. the land hoisting tool of vertical production tree according to claim 7, it is characterised in that the claw connection component (30) hydraulic cylinder (35) is also included, connecting rod (31) is connected with hydraulic cylinder (35), and hydraulic cylinder (35) being capable of drive connection bar (31) Moved up and down along the axial direction of body (10).
CN201720168230.8U 2017-02-23 2017-02-23 The vertical land hoisting tool of production tree Withdrawn - After Issue CN206545488U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720168230.8U CN206545488U (en) 2017-02-23 2017-02-23 The vertical land hoisting tool of production tree

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720168230.8U CN206545488U (en) 2017-02-23 2017-02-23 The vertical land hoisting tool of production tree

Publications (1)

Publication Number Publication Date
CN206545488U true CN206545488U (en) 2017-10-10

Family

ID=59994780

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720168230.8U Withdrawn - After Issue CN206545488U (en) 2017-02-23 2017-02-23 The vertical land hoisting tool of production tree

Country Status (1)

Country Link
CN (1) CN206545488U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837206A (en) * 2017-02-23 2017-06-13 中国石油大学(北京) The vertical land hoisting tool of production tree

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837206A (en) * 2017-02-23 2017-06-13 中国石油大学(北京) The vertical land hoisting tool of production tree

Similar Documents

Publication Publication Date Title
US4497592A (en) Self-levelling underwater structure
CN106275330B (en) A kind of subsea control modules spring forced locking device
CN206545488U (en) The vertical land hoisting tool of production tree
CN204238869U (en) The external circlip type riser-connector of a kind of anti-high moment of torsion type
US6516875B2 (en) Tubing hanger lockdown mechanism
CN102536133B (en) Hydraulic casing pipe centering device
US8261818B2 (en) Self-inserting seal assembly
CN106976474A (en) A kind of match steering wheel for vehicle device for quickly disassembling with connector
CN106837206A (en) The vertical land hoisting tool of production tree
CN205100926U (en) Sliding block fishing spear
CN206691180U (en) A kind of match steering wheel for vehicle device for quickly disassembling with connector
CA2950584A1 (en) Hanger running tool
CN202381005U (en) Positioning hanger
CN103670019B (en) Chuck mode tapered end and valid key
CN203729929U (en) Expansion pipe completing tool
CN205743791U (en) The lead stamp instrument that a kind of boll-weevil hanger for underwater vertical production tree is installed
CN104533899B (en) Rigid connector of offshore buoyancy tank system
CN110965952B (en) Telescopic tail pipe seat
CN103255912B (en) A kind of attachment structure of treadle of false work and crossbeam
CN202946105U (en) Single gliding inner sleeve full-bore drilling-free plug grading hoop
CN213980752U (en) Fishing ball control blanking plug
CN203161150U (en) Side fisher for fishing underground broken rod
CN215479342U (en) Arm pin device, crane boom and engineering machinery
CN210134811U (en) Underground hydraulic telescopic pipe
US9803446B2 (en) Lockdown mechanism and lockdown system for wellhead connector

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20171010

Effective date of abandoning: 20190802

AV01 Patent right actively abandoned