CN210714628U - Deep sea drilling production tree moving device - Google Patents
Deep sea drilling production tree moving device Download PDFInfo
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- CN210714628U CN210714628U CN201921156572.3U CN201921156572U CN210714628U CN 210714628 U CN210714628 U CN 210714628U CN 201921156572 U CN201921156572 U CN 201921156572U CN 210714628 U CN210714628 U CN 210714628U
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Abstract
The utility model relates to the technical field of mobile equipment accessories, in particular to a deep sea drilling Christmas tree transferring device which can limit the Christmas tree in the transferring process so as to reduce the probability of shaking of the Christmas tree relative to a ship body, thereby improving the safety factor of the Christmas tree transferring process; the lifting mechanism is provided with a power mechanism and a lifting rope assembly; still include the production tree, two sets of fixed plates, two sets of gag lever posts, the locating piece before the multiunit, the multiunit back locating piece, four groups of sliders, the mounting panel, two sets of backup pads, four groups of telescopic links, two sets of stripper plates, four groups of positioning bolt and two sets of limiting plates, the left end of two sets of gag lever posts is connected with the right-hand member front side and the rear side of left side fixed plate respectively, the right-hand member of two sets of gag lever posts is connected with the left end front side and the rear side of right side fixed plate respectively, the left end outside of four groups of sliders is run through respectively and is provided with four groups of U type spouts, the outer end front side and the.
Description
Technical Field
The utility model relates to a mobile device auxiliary equipment's technical field especially relates to a deep sea drilling production tree moves shipping unit.
Background
As is known, after the deep-sea floating drilling is completed, the blowout preventer needs to be removed, and then the christmas tree is put into the wellhead, the christmas tree is connected with a production pipeline and an oil outlet pipe from the underground and is used as an important barrier for isolating the top end of an oil well from the external environment, usually, due to the influence of the overall arrangement of a working hull or a working platform, the christmas tree is usually arranged at one end of a moon pool and is placed on a main deck for fixed storage when the christmas tree is not applicable, and the christmas tree needs to be moved from the main deck to the moon pool when the christmas tree is below the completion well, and the deep-sea drilling christmas tree moving device is a device for moving the christmas tree and is widely used in the field of the application of the christmas tree; the existing deep sea drilling Christmas tree moving and transporting device comprises a lifting mechanism, wherein the lifting mechanism is provided with a power mechanism and a lifting rope assembly; when the existing deep sea drilling Christmas tree moving device is used, firstly, the lifting rope assembly is connected with a Christmas tree to be moved, then a power mechanism of the lifting mechanism is started, and the power mechanism can lift the Christmas tree to an appointed position through the lifting rope assembly; the existing deep sea drilling Christmas tree transporting device finds that once the ship body shakes during the process of transporting the Christmas tree by the hoisting mechanism, the Christmas tree is easy to shake along with the ship body after being hoisted, so that the safety factor of the Christmas tree hoisting process is reduced, and the practicability is poor.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a can carry on spacingly to the production tree of handling in-process to reduce the relative probability that takes place to rock with the hull of production tree, consequently improved the factor of safety of production tree handling process, thereby strengthen the deep sea drilling production tree of practicality and move shipping unit.
The utility model discloses a deep sea drilling production tree moving device, which comprises a lifting mechanism, wherein the lifting mechanism is provided with a power mechanism and a lifting rope component; the oil production tree support device comprises a left side fixing plate, a right side fixing plate, a left side supporting plate, a right side fixing plate, a left side fixing bolt, a right side fixing plate, a left side fixing rod, a right side fixing plate, a right side fixing rod, a front side fixing rod, a rear side fixing bolt, a rear side limiting plate, a left side limiting bolt, a left side limiting rod, a right side fixing rod, a left side limiting rod, a right side limiting rod, a front side limiting rod, a rear side limiting rod, a four groups of sliding chutes, four groups of sliding blocks and a bottom end of the mounting plate The left rear side, the right front side and the right rear side are connected, the tops of the inner ends of the two groups of supporting plates are respectively connected with the left end and the right end of the mounting plate, the front sides and the rear sides of the outer ends of the two groups of supporting plates are respectively provided with four groups of telescopic holes in a penetrating manner, the four groups of telescopic holes are respectively clamped with four groups of telescopic rods in a sliding manner, the inner ends of the four groups of telescopic rods are respectively connected with the front sides and the rear sides of the outer ends of the two groups of extrusion plates, the top ends of the four groups of telescopic holes are respectively communicated with four groups of positioning threaded holes, the outer sides of the middle parts of the top ends of the four groups of telescopic rods are respectively provided with four groups of fastening threaded grooves, the bottom ends of the four groups of positioning bolts are respectively screwed through the four groups of positioning threaded holes from the upper sides of the two groups of supporting plates and then are respectively inserted into the four groups of fastening, the two groups of extrusion plates are respectively clamped with the two groups of positioning U-shaped hole sliding holes, the inner ends of the two groups of extrusion plates are respectively provided with two groups of connecting assemblies, and the inner ends of the two groups of connecting assemblies are respectively clung to the bottoms of the left end and the right end of the Christmas tree.
The utility model discloses a deep sea drilling production tree moves shipping unit, two sets of coupling assembling include two sets of protection pads, the outer end of two sets of protection pads is connected with the inner of two sets of stripper plates respectively, the inner of two sets of protection pads is hugged closely with the left end and the right-hand member bottom region of production tree respectively.
The utility model discloses a deep sea drilling production tree moves shipping unit, the top of the U type spout of every group slider and the left side and the right side of bottom are provided with four groups respectively and rotate the groove, the inside in four groups rotation grooves is provided with four groups respectively and rotates the wheel.
The utility model discloses a deep sea drilling production tree moves fortune device still includes four protective ring of group, four protective ring of group respectively with the outer end suit of four telescopic links of group.
The utility model discloses a deep sea drilling production tree moves shipping unit, the circumference lateral wall that the wheel was rotated to every group all is provided with the antiskid cover.
The utility model discloses a deep sea drilling production tree moves fortune device still includes four group's assistance-localization real-time pieces, four group's assistance-localization real-time pieces's bottom is connected with the top left front side, left rear side, right rear side and the right front side of mounting panel respectively, and four group's assistance-localization real-time pieces's the inner all hugs closely with the lateral wall of production tree.
The utility model discloses a deep sea drilling production tree moves shipping unit still includes four group's rotation knobs, four group's rotation knob's bottom is provided with four group's draw-in grooves respectively, four group's positioning bolt's of group top is provided with four group's positioning nut respectively, four group's positioning nut clamps with four group's draw-in grooves respectively.
The utility model discloses a deep sea drilling production tree moves shipping unit, the top that still includes the mounting panel evenly is provided with the multiunit auxiliary tank, the inside in multiunit auxiliary tank is rotated and is provided with the multiunit auxiliary roller.
Compared with the prior art, the beneficial effects of the utility model are that: firstly, fixing two groups of fixing plates, a plurality of groups of front positioning blocks and a plurality of groups of rear positioning blocks on a deck respectively, then fixing the fixing plates on the Christmas tree by a lifting rope component of a lifting mechanism, then lifting the Christmas tree to the top of a mounting plate by the lifting mechanism, then adjusting the position of the Christmas tree to ensure that after four groups of telescopic rods are pushed, two groups of extrusion plates are just clamped into two groups of positioning U-shaped holes of two groups of limiting plates, then increasing the force to push the four groups of telescopic rods to ensure that four groups of positioning threaded holes and four groups of fastening threaded grooves respectively align with the four groups of positioning threaded holes, then immediately rotating the four groups of positioning bolts respectively to ensure that the four groups of positioning bolts are respectively screwed into the four groups of fastening threaded grooves, at the moment, the two groups of extrusion plates clamp the Christmas tree respectively through two groups of connecting components, then the lifting mechanism can drag the Christmas tree to move through the, and guaranteed that the removal orbit of production tree does not take place the skew under the spacing of two sets of gag lever posts, two sets of limiting plates and two sets of stripper plates cooperation have reduced the gliding probability of production tree at the mounting panel top simultaneously to carry on spacingly through the production tree to the handling in-process, reduced the production tree and take place the probability of rocking relatively with the hull, consequently improved the factor of safety of production tree handling process, thereby reinforcing practicality.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of a partially enlarged structure of a;
fig. 3 is a schematic view of a partial enlarged structure of B of the present invention;
FIG. 4 is a schematic view of the connection structure of the multiple sets of auxiliary rollers and the mounting plate of the present invention;
FIG. 5 is a schematic view of the connection structure of four sets of sliders and two sets of limit rods;
fig. 6 is a schematic view of a connection structure of the limiting plate and the positioning U-shaped hole of the present invention;
in the drawings, the reference numbers: 1. a hoist rope assembly; 2. a Christmas tree; 3. two groups of fixing plates; 4. two sets of limiting rods; 5. a plurality of groups of front positioning blocks; 6. a plurality of groups of rear positioning blocks; 7. four groups of sliding blocks; 8. mounting a plate; 9. two sets of support plates; 10. four groups of telescopic rods; 11. two groups of extrusion plates; 12. four sets of positioning bolts; 13. two groups of limiting plates; 14. a U-shaped chute; 15. four groups of telescopic holes; 16. four groups of positioning threaded holes; 17. four groups of fastening thread grooves; 18. two groups of positioning U-shaped holes; 19. two groups of protective pads; 20. four groups of rotating grooves; 21. four groups of rotating wheels; 22. four groups of protection rings; 23. an anti-slip sleeve; 24. four groups of auxiliary positioning blocks; 25. four groups of rotating knobs; 26. four groups of clamping grooves; 27. four groups of positioning screw caps; 28. a plurality of sets of auxiliary grooves; 29. a plurality of sets of auxiliary rollers.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 6, the device for transferring the deep sea drilling christmas tree of the present invention comprises a lifting mechanism, wherein the lifting mechanism is provided with a power mechanism and a lifting rope assembly 1; the device also comprises a Christmas tree 2, two groups of fixed plates 3, two groups of limiting rods 4, a plurality of groups of front positioning blocks 5, a plurality of groups of rear positioning blocks 6, four groups of sliding blocks 7, a mounting plate 8, two groups of supporting plates 9, four groups of telescopic rods 10, two groups of extrusion plates 11, four groups of positioning bolts 12 and two groups of limiting plates 13, wherein the left ends of the two groups of limiting rods 4 are respectively connected with the front side and the rear side of the right end of the left fixed plate, the right ends of the two groups of limiting rods 4 are respectively connected with the front side and the rear side of the right fixed plate, the rear ends of the plurality of groups of front positioning blocks 5 are respectively and uniformly connected with the front ends of the two groups of limiting rods 4, the front ends of the plurality of rear positioning blocks 6 are respectively and uniformly connected with the rear ends of the two groups of limiting rods 4, four groups of U-shaped sliding chutes 14 are respectively arranged on the outer sides of the left ends of the four groups of sliding, the top ends of four groups of sliding blocks 7 are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of a mounting plate 8, the top ends of the inner ends of two groups of supporting plates 9 are respectively connected with the left end and the right end of the mounting plate 8, the front sides and the rear sides of the outer ends of the two groups of supporting plates 9 are respectively provided with four groups of telescopic holes 15 in a penetrating way, the four groups of telescopic holes 15 are respectively clamped with four groups of telescopic rods 10 in a sliding way, the inner ends of the four groups of telescopic rods 10 are respectively connected with the front sides and the rear sides of the outer ends of two groups of extrusion plates 11, the top ends of the four groups of telescopic holes 15 are respectively provided with four groups of positioning threaded holes 16 in a communicating way, the outer sides of the middle parts of the top ends of the four groups of telescopic rods 10 are respectively provided with four groups of fastening threaded grooves 17, the bottom ends of four groups of positioning bolts 12 are respectively, two groups of positioning U-shaped holes 18 are respectively arranged on the upper sides of the outer ends of the two groups of limiting plates 13 in a penetrating manner, the two groups of extrusion plates 11 are respectively clamped with the two groups of positioning U-shaped holes 18 in a sliding manner, two groups of connecting assemblies are respectively arranged at the inner ends of the two groups of extrusion plates 11, and the inner ends of the two groups of connecting assemblies are respectively clung to the bottoms of the left end and the right end of the Christmas tree 2; firstly, fixing two groups of fixing plates, a plurality of groups of front positioning blocks and a plurality of groups of rear positioning blocks on a deck respectively, then fixing the fixing plates on the Christmas tree by a lifting rope component of a lifting mechanism, then lifting the Christmas tree to the top of a mounting plate by the lifting mechanism, then adjusting the position of the Christmas tree to ensure that after four groups of telescopic rods are pushed, two groups of extrusion plates are just clamped into two groups of positioning U-shaped holes of two groups of limiting plates, then increasing the force to push the four groups of telescopic rods to ensure that four groups of positioning threaded holes and four groups of fastening threaded grooves respectively align with the four groups of positioning threaded holes, then immediately rotating the four groups of positioning bolts respectively to ensure that the four groups of positioning bolts are respectively screwed into the four groups of fastening threaded grooves, at the moment, the two groups of extrusion plates clamp the Christmas tree respectively through two groups of connecting components, then the lifting mechanism can drag the Christmas tree to move through the, and guaranteed that the removal orbit of production tree does not take place the skew under the spacing of two sets of gag lever posts, two sets of limiting plates and two sets of stripper plates cooperation have reduced the gliding probability of production tree at the mounting panel top simultaneously to carry on spacingly through the production tree to the handling in-process, reduced the production tree and take place the probability of rocking relatively with the hull, consequently improved the factor of safety of production tree handling process, thereby reinforcing practicality.
The utility model discloses a deep sea drilling production tree moves shipping unit, two sets of coupling assembling include two sets of protection pads 19, the outer end of two sets of protection pads 19 is connected with the inner of two sets of stripper plates 11 respectively, the inner of two sets of protection pads 19 is hugged closely with the left end of production tree 2 and right-hand member bottom region respectively; through setting up two sets of coupling assembling into two sets of protection pads, reduced the in-process that the production tree removed effectively, two sets of stripper plates are to the extrusion damage degree of production tree to the practicality has been strengthened.
The utility model discloses a deep sea drilling production tree moves shipping unit, the left side and the right side of the top and the bottom of the U-shaped chute 14 of each group slider are provided with four groups of rotating grooves 2620 respectively, the inside of four groups of rotating grooves 2620 is provided with four groups of rotating wheels 21 respectively; through set up four groups in the U type spout of slider and rotate the wheel, become sliding friction to rolling friction, effectually reduced four group's sliders respectively at the frictional resistance on two sets of gag lever posts, reduced the wearing and tearing of four group's sliders simultaneously to the practicality has been strengthened.
The deep sea drilling Christmas tree moving and transporting device of the utility model also comprises four groups of protective rings 22, wherein the four groups of protective rings 22 are respectively sleeved with the outer ends of the four groups of telescopic rods 10; the four groups of telescopic rods are limited by the four groups of protective rings, so that the probability that the four groups of telescopic rods are separated from the four groups of telescopic holes when the mobile device is not used is effectively reduced, and the practicability is enhanced.
The utility model discloses a deep sea drilling production tree moving device, the circumferential side wall of each group of rotating wheels is provided with an anti-skid sleeve 23; the friction coefficient of the anti-skidding sleeve is large, the probability of skidding of the rotating wheel is effectively reduced, and abrasion of the rotating wheel is reduced, so that the practicability is enhanced.
The utility model discloses a deep sea drilling production tree moves shipping unit, still include four groups of auxiliary positioning blocks 24, the bottom of four groups of auxiliary positioning blocks 24 is connected with the left front side, left rear side, right rear side and the right front side of top of mounting panel 8 respectively, the inner of four groups of auxiliary positioning blocks 24 all hugs closely with the lateral wall of production tree 2; the positioning of the Christmas tree is limited by the four groups of auxiliary positioning blocks, and the convenience of positioning the Christmas tree is improved.
The utility model discloses a deep sea drilling production tree moves shipping unit, still include four groups of rotation knobs 25, four groups of rotation knobs 25 bottom is provided with four groups of draw-in grooves 26 respectively, four groups of positioning bolts 12 top is provided with four groups of positioning nut 27 respectively, four groups of positioning nut 27 clamp with four groups of draw-in grooves 26 respectively; the four sets of rotating knobs enable the rotating process of the four sets of positioning bolts to be more convenient, and therefore convenience is improved.
The deep sea drilling Christmas tree moving device of the utility model also comprises a plurality of groups of auxiliary grooves 28 evenly arranged on the top end of the mounting plate 8, and a plurality of groups of auxiliary rollers 29 are arranged inside the plurality of groups of auxiliary grooves 28 in a rotating way; the top of the mounting plate is provided with the plurality of groups of auxiliary rollers, so that the adjusting process of the Christmas tree at the top of the mounting plate is more labor-saving and convenient, and the practicability is enhanced.
The utility model discloses a deep sea well drilling production tree transporting device, when it works, firstly, two sets of fixed plates, a plurality of sets of front locating blocks and a plurality of sets of rear locating blocks are fixed on the deck respectively, then the production tree is fixed on the production tree by the lifting rope component of the lifting mechanism, then the production tree is lifted to the top of the mounting plate by the lifting mechanism, then the position of the production tree is adjusted to push four sets of telescopic rods, two sets of extrusion plates are just clamped into two sets of positioning U-shaped holes of two sets of limiting plates, then the force is increased to push the four sets of telescopic rods to lead the four sets of positioning threaded holes and the four sets of fastening threaded grooves to be respectively aligned, then the four sets of positioning bolts are immediately and respectively rotated to lead the four sets of positioning bolts to be respectively screwed into the four sets of fastening threaded grooves, at the moment, the two sets of extrusion plates respectively clamp the production tree, at this moment, the Christmas tree drives the mounting plate to slide on the two groups of limiting rods through the four groups of sliding blocks under the limiting of the two groups of extrusion plates, the moving track of the Christmas tree is guaranteed not to deviate under the limiting of the two groups of limiting rods, and meanwhile, the probability of the Christmas tree sliding on the top of the mounting plate is reduced due to the matching of the two groups of limiting plates and the two groups of extrusion plates.
The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A deep sea drilling Christmas tree moving device comprises a lifting mechanism, wherein the lifting mechanism is provided with a power mechanism and a lifting rope assembly (1); it is characterized by also comprising an oil production tree (2), two groups of fixed plates (3), two groups of limiting rods (4), a plurality of groups of front positioning blocks (5), a plurality of groups of rear positioning blocks (6), four groups of sliding blocks (7), a mounting plate (8), two groups of supporting plates (9), four groups of telescopic rods (10), two groups of extrusion plates (11), four groups of positioning bolts (12) and two groups of limiting plates (13), wherein the left ends of the two groups of limiting rods (4) are respectively connected with the front side and the rear side of the right end of the left fixed plate, the right ends of the two groups of limiting rods (4) are respectively connected with the front side and the rear side of the left fixed plate, the rear ends of the plurality of groups of front positioning blocks (5) are respectively and uniformly connected with the front ends of the two groups of limiting rods (4), the outer sides of the left ends of the four groups of sliding blocks (7) are respectively provided with four groups of U-shaped sliding chutes (14, two groups of U-shaped sliding grooves (14) on the front side are slidably clamped with a front side limiting rod, two groups of U-shaped sliding grooves (14) on the rear side are slidably clamped with a rear side limiting rod, the top ends of the four groups of sliding blocks (7) are respectively connected with the left front side, the left rear side, the right front side and the right rear side of the bottom end of the mounting plate (8), the top parts of the inner ends of the two groups of supporting plates (9) are respectively connected with the left end and the right end of the mounting plate (8), the front sides and the rear sides of the outer ends of the two groups of supporting plates (9) are respectively provided with four groups of telescopic holes (15) in a penetrating manner, the four groups of telescopic holes (15) are respectively slidably clamped with four groups of telescopic rods (10), the inner ends of the four groups of telescopic rods (10) are respectively connected with the front sides and the rear sides of the outer ends of the two groups of extrusion plates (11), the top ends of the four groups of telescopic holes (15) are respectively communicated with four groups of positioning threaded holes, the bottom of four group positioning bolt (12) is respectively from the upside of two sets of backup pad (9) the spiral shell dress respectively and is passed four group location screw hole (16) then continues the spiral shell dress respectively and insert to four group's fastening thread groove (17) in, the inner of two sets of limiting plate (13) is connected with the inner bottom region of production tree (2) respectively, the outer end upside of two sets of limiting plate (13) is run through respectively and is provided with two sets of location U type hole (18), two sets of stripper plate (11) clamp with two sets of location U type hole (18) slide opening respectively, the inner of two sets of stripper plate (11) is provided with two sets of coupling assembling respectively, the inner of two sets of coupling assembling is hugged closely with the left end and the right-hand member bottom of production tree (2) respectively.
2. The deep sea drilling Christmas tree transfer device of claim 1, wherein the two groups of connecting components comprise two groups of protection pads (19), the outer ends of the two groups of protection pads (19) are respectively connected with the inner ends of the two groups of squeeze plates (11), and the inner ends of the two groups of protection pads (19) are respectively attached to the bottom areas of the left end and the right end of the Christmas tree (2).
3. The deep sea drilling Christmas tree transfer device according to claim 2, wherein four sets of rotating grooves (20) are respectively arranged on the left side and the right side of the top end and the bottom end of the U-shaped sliding groove (14) of each set of sliding blocks, and four sets of rotating wheels (21) are respectively arranged inside the four sets of rotating grooves (20).
4. The deep sea drilling Christmas tree transfer device according to claim 3, further comprising four sets of guard rings (22), wherein the four sets of guard rings (22) are respectively sleeved with the outer ends of the four sets of telescopic rods (10).
5. The apparatus for transporting a Christmas tree in deep sea drilling according to claim 4, wherein the circumferential side wall of each set of rotating wheels is provided with an anti-slip sleeve (23).
6. The deep sea drilling Christmas tree transfer device according to claim 5, further comprising four sets of auxiliary positioning blocks (24), wherein the bottom ends of the four sets of auxiliary positioning blocks (24) are respectively connected with the left front side, the left rear side, the right rear side and the right front side of the top end of the mounting plate (8), and the inner ends of the four sets of auxiliary positioning blocks (24) are all attached to the side wall of the Christmas tree (2).
7. The deep sea drilling Christmas tree transfer device of claim 6, further comprising four sets of rotating knobs (25), wherein four sets of clamping grooves (26) are respectively formed at the bottom ends of the four sets of rotating knobs (25), four sets of positioning nuts (27) are respectively formed at the tops of the four sets of positioning bolts (12), and the four sets of positioning nuts (27) are respectively clamped with the four sets of clamping grooves (26).
8. The deep sea drilling Christmas tree transfer device according to claim 7, further comprising a plurality of groups of auxiliary grooves (28) uniformly arranged on the top end of the mounting plate (8), wherein a plurality of groups of auxiliary rollers (29) are rotatably arranged inside the plurality of groups of auxiliary grooves (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921156572.3U CN210714628U (en) | 2019-07-22 | 2019-07-22 | Deep sea drilling production tree moving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921156572.3U CN210714628U (en) | 2019-07-22 | 2019-07-22 | Deep sea drilling production tree moving device |
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| Publication Number | Publication Date |
|---|---|
| CN210714628U true CN210714628U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921156572.3U Expired - Fee Related CN210714628U (en) | 2019-07-22 | 2019-07-22 | Deep sea drilling production tree moving device |
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| Country | Link |
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| CN (1) | CN210714628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259417A (en) * | 2019-07-22 | 2019-09-20 | 广州海洋地质调查局 | A kind of deep sea drilling production tree board migration device |
-
2019
- 2019-07-22 CN CN201921156572.3U patent/CN210714628U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259417A (en) * | 2019-07-22 | 2019-09-20 | 广州海洋地质调查局 | A kind of deep sea drilling production tree board migration device |
| CN110259417B (en) * | 2019-07-22 | 2023-12-12 | 广州海洋地质调查局 | Deep sea well drilling christmas tree migration device |
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Granted publication date: 20200609 Termination date: 20210722 |