CN202099793U - Step-type hydraulic lift used for jack-up platform - Google Patents
Step-type hydraulic lift used for jack-up platform Download PDFInfo
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- CN202099793U CN202099793U CN 201120105596 CN201120105596U CN202099793U CN 202099793 U CN202099793 U CN 202099793U CN 201120105596 CN201120105596 CN 201120105596 CN 201120105596 U CN201120105596 U CN 201120105596U CN 202099793 U CN202099793 U CN 202099793U
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Abstract
The utility model relates to a step-type hydraulic lift used for a jack-up platform and is characterized in that the step-type hydraulic lift comprises a pile fixing tube integrally connected with a platform deck, wherein a pipe leg penetrates through the pile fixing tube, and the lower end of the pile leg penetrates through the platform deck and is fixed to a seabed; an upper pile clamping device for locking and releasing the pile leg is fixedly arranged on the inner wall of the pile fixing tube, a plurality of lifting oil cylinders are connected to the bottom end of the upper pile clamping device, the bottom ends of the lifting oil cylinders are all connected to a lower pile clamping device used for locking and releasing the pile leg, and a pile locking device used for locking and releasing the pile leg is fixedly arranged on the inner wall of the pile fixing tube below the lower pile clamping device; and the lifting oil cylinders are all connected with a hydraulic system. The step-type hydraulic lift has a simple structure and low cost and can be widely used on sea jack-up platforms.
Description
Technical field
The utility model relates to a kind of hydraulic lift, particularly about a kind of step type hydraulic lifting gear with the Yu Haiyang jack-up unit.
Background technology
At present in ocean engineering; Being of wide application of jack-up unit; Because of its have removable, in place fast, characteristics such as easy construction, all brought into play important function in various aspects such as oil reservoir exploration in early stage, offshore platform brill, well workover, platform device maintenance, small oil field exploitations.At present the jack-up unit of China with this function has: the number of improving oneself, support oneself number, No. 3, No. 5, the South Sea, offshore oil 161, middle tide etc.; These platforms are for realizing going up and down all to be equipped with a cover lifting gear; This cover lifting gear adopts hydraulic way as power source basically; And all come from external importing technology, it is high to introduce cost, can not be widely used at home.At present domestic also not developing can realize that the ocean jack-up unit goes up and down, and is different from the hydraulic lift of external importing technology.
Summary of the invention
To the problems referred to above, the purpose of the utility model provide a kind of simple in structure, cost is low, is applicable to the step type hydraulic lifting gear that the ocean jack-up unit goes up and down.
For realizing above-mentioned purpose; The utility model is taked following technical scheme: a kind of step type hydraulic lifting gear that is used for jack-up unit; It is characterized in that: it comprises that one is connected the solid stake tube of one with Platform Deck; Be equipped with a spud leg in the said solid stake tube, said spud leg lower end is passed said Platform Deck and is fixed on the seabed; Said solid stake tube inwall be set with one be used to lock, unclamp said spud leg on hold a device under the arm; Hold a device bottom on said under the arm and connect some hoist cylinders; The bottom of each said hoist cylinder is common connect one be used to lock, unclamp said spud leg a following device of holding under the arm, the said said solid stake tube inwall of holding a device below down under the arm be set with one be used to lock, unclamp said spud leg the lock stud device; Each said hoist cylinder connects hydraulic system.
Holding a device on said under the arm comprises and holds a device cylindrical shell under the arm; A said top of device cylinder body outer wall and the bottom of holding under the arm all is welded with some wing plates at interval; The other end of each said wing plate is welded on the said solid stake tube; The said middle part inwall of holding a device cylindrical shell under the arm is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; A said device cylindrical shell outside of holding under the arm is symmetrically arranged with two angling cylinders; One end of each said angling cylinder is arranged on the said wing plate; The other end connects a rotor plate, and the other end of said rotor plate passes the said long arc-shaped holes of offering on the device cylindrical shell of holding under the arm and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
Said lock stud device comprises a cylindrical shell; The top of said cylinder body outer wall and bottom all are welded with some wing plates at interval; The other end of each said wing plate is welded on the said solid stake tube; The middle part inwall of said cylindrical shell is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; The said cylindrical shell outside is symmetrically arranged with two angling cylinders, and an end of each said angling cylinder is arranged on the said wing plate, and the other end connects a rotor plate, and the other end of said rotor plate passes the long arc-shaped holes of offering on the said cylindrical shell and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
Holding a device under said under the arm comprises and holds a device cylindrical shell under the arm; A said top of device cylinder body outer wall and the bottom of holding under the arm all is welded with some wing plates at interval; Leave the gap between the other end of each said wing plate and the said solid stake tube; The said middle part inwall of holding a device cylindrical shell under the arm is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; A said device cylindrical shell outside of holding under the arm is symmetrically arranged with two angling cylinders; One end of each said angling cylinder is arranged on the said wing plate; The other end connects a rotor plate, and the other end of said rotor plate passes the said long arc-shaped holes of offering on the device cylindrical shell of holding under the arm and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
Hold under the arm on said between every pair of wing plate of top and bottom of cylinder body outer wall of a device and lock stud device and be provided with a riser, a face down bonding of each said riser is connected on said holding under the arm on the outer wall of device cylindrical shell, and opposite side is welded on the said solid stake tube; The top of said cylinder inboard wall and bottom all are welded with the tough stake plate of an annular.
Be provided with a riser between every pair of wing plate of said cylinder body outer wall top of holding down a device under the arm and bottom, a face down bonding of each said riser is connected on the outer wall of said cylindrical shell, leaves the gap between opposite side and the said solid stake tin; The top of said cylinder inboard wall and bottom all are welded with the tough stake plate of an annular.
Each said hoist cylinder is symmetrical set, and its quantity is a kind of in 4,6 and 8.
The utility model is owing to take above technical scheme, and it has the following advantages: 1, the utility model comprises a solid stake tube, Gu stake tube bottom and Platform Deck connect as one; Gu being provided with, stake tube internal upper part holds a device under the arm; On hold a device bottom under the arm and connect a hoist cylinder, the hoist cylinder bottom connects down holds a device under the arm, the interior bottom of a solid device is provided with the lock stud device; Upper and lowerly hold a device under the arm and the spud leg that is located in the solid stake tube can be locked, unclamped to the lock stud device; Through holding cooperatively interacting of a device, lock stud device and hoist cylinder under the arm, not only can make Platform Deck lift away from water surface certain altitude, Platform Deck is returned drop to the water surface.2, holding under the arm of the utility model is provided with rotation ring beam and angling cylinder in a device and the lock stud device; Stretching out, withdrawing through angling cylinder; Can drive the rotation ring beam turns round along spud leg; Rotate the circumferential boss that is provided with of ring beam and cooperate chucking, unclamp, can realize holding under the arm locking, the release of a device, lock stud device and spud leg with the voussoir of spud leg outer setting.3, in the utility model the cylinder body of hoist cylinder with on hold a device under the arm and be connected, piston rod with under hold a device under the arm and be connected hoist cylinder compression rod effect all the time when heavy duty; Rodless cavity work; Hoist cylinder tension member effect when underloading, rod chamber work, the stressed use of hoist cylinder is reasonable.The utility model is simple in structure, and cost is low, can be widely used on the jack-up unit of ocean.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 holds a device structural representation under the arm on the utility model
Fig. 3 is the schematic top plan view of Fig. 2
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is carried out detailed description.
As shown in Figure 1; The utility model comprises a solid stake tube 1; Gu being set with, stake tube 1 inwall holds a device 2 on one under the arm; On hold a device 2 bottoms under the arm and connect some hoist cylinders 3, the bottom of each hoist cylinder 3 connects jointly holds a device 4 under the arm, solid stake tube 1 inwall of holding a device 4 belows down under the arm is set with a lock stud device 5.Hoist cylinder 3 connects the hydraulic system (not shown).Gu the bottom of stake tube 1 is connected one with Platform Deck 6, Gu be equipped with a spud leg 7 in the stake tube 1, spud leg 7 lower ends are passed Platform Deck 6 and are fixed on the seabed.On hold a device 2 under the arm, hold a device 4 and lock stud device 5 under the arm down and all be used to lock, unclamp the spud leg 7 that is located in the solid stake tube 1.
In the foregoing description, the cylinder body of each hoist cylinder 3 with on hold a device 2 under the arm and be connected, the piston rod of each hoist cylinder 3 with under hold a device 4 under the arm and be connected.
Like Fig. 2, shown in Figure 3; On hold a device 2 under the arm and comprise and hold a device cylindrical shell 8 under the arm; Hold under the arm and be symmetrically welded with some wing plates 9 on a top of device cylindrical shell 8 outer walls and the bottom at interval, the other end of each wing plate 9 is welded on the solid stake tube 1, and each is to being provided with a riser 10 between the upper and lower wing plate 9; One face down bonding of each riser 10 is connected on to be held under the arm on the outer wall of device cylindrical shell 8, and opposite side is welded on the solid stake tube 1.Hold the tough stake plate 11 that a top of device cylindrical shell 8 inwalls and bottom all are welded with an annular under the arm, tough stake plate 11 is used to limit the relative horizontal movement of holding under the arm between a device 2 and the spud leg 7.The middle part inwall of holding a device cylindrical shell 8 under the arm is welded with two fixedly ring beams 12 at interval, all is arranged at intervals with plurality of strengthening ribs between each tough stake plate 11 that fixedly ring beam 12 is adjacent.Two fixedly are provided with a rotation ring beam 13 between the ring beam 12, rotate ring beam 13 and circumferentially be arranged at intervals with some boss, and each boss is used for cooperating chucking, unclamping with the voussoir of spud leg 7 outer setting.Hold that symmetry offers two long arc-shaped holes on the device cylindrical shell 8 under the arm.Hold device cylindrical shell 8 outside under the arm and be symmetrically arranged with two angling cylinders 14; One end correspondence of each angling cylinder 14 is arranged on the wing plate 9; The other end connects a rotor plate 15, and the other end of rotor plate 15 passes holds the long arc-shaped holes connection rotation ring beam of offering on the device cylindrical shell 8 13 under the arm.Each angling cylinder 14 connects the hydraulic system (not shown).
As shown in Figure 1, hold under the arm down a device 4 with on hold the structural similarity of a device 2 under the arm, difference is: the inwall of holding on a top of device cylindrical shell 8 and the bottom outer wall wing plate 9 of symmetry welding and solid stake at interval tin 1 under the arm of holding a device 4 down under the arm all has certain distance; Each all has certain distance to the riser 10 of setting between the upper and lower wing plate 9 and the inwall of solid stake tube 1.
As shown in Figure 1, lock stud device 5 with on to hold the structure of a device 2 under the arm identical, no longer specify.
Hold a device 2 on above-mentioned under the arm, hold all stretching out, withdrawing and drive to rotate ring beam 13 of a device 4 and lock stud device 5 under the arm down through angling cylinder 14 along spud leg 7 revolutions; Rotate the boss that ring beam 13 circumferentially is provided with and cooperates chucking, unclamp, to hold a device 2 in the realization under the arm, to hold locking, the release of a device 4, lock stud device 5 and spud leg 7 under the arm down with the voussoir of spud leg 7 outer setting.
In the foregoing description, hoist cylinder 3 can be provided with 4,6 or 8, is symmetrically distributed.
In the foregoing description, the hydraulic system that connects hoist cylinder 3 and angling cylinder 14 belongs to prior art, no longer specifies at this.
In the foregoing description, rotate on the ring beam 13 the oiling pipeline is set, oiling regularly is antirust.
As shown in Figure 1, when the utility model is in running order,, and connect as one with Platform Deck 6 Gu stake tube 1 is set in spud leg 7 outsides.The original state of the utility model when lift bench and decline platform is: on hold a device 2 under the arm, hold a device 4 under the arm down and all be in released state with spud leg 7, lock stud device 5 is in locking state with spud leg 7, and then makes Platform Deck 6 and spud leg 7 lockings.
The method of the utility model lift bench may further comprise the steps:
1) holds a device 2 under the arm and keep released state with spud leg 7; Under hold device 4 and spud leg 7 lockings under the arm; Lock stud device 5 and spud leg 7 releases;
2) HYDRAULIC CONTROL SYSTEM hoist cylinder 3 stretches out, and holds a device 2 and platform in the promotion under the arm and together moves up, and puts in place until hoist cylinder 3 strokes;
3) hold a device 2 and spud leg 7 lockings under the arm; Under hold device 4 and spud leg 7 releases under the arm;
4) HYDRAULIC CONTROL SYSTEM hoist cylinder 3 is regained, and holds a device 4 under the pulling under the arm and raises, and puts in place until hoist cylinder 3 strokes;
5) hold a device 4 and spud leg 7 lockings under under the arm; On hold device 2 and spud leg 7 releases under the arm;
6) return step 2), move on the step-by-step movement of implementation platform, until platform rise put in place after, lock stud device 5 and spud leg 7 lockings, on hold under the arm a device 2, down hold under the arm a device 4 all with spud leg 7 releases.
The method of the utility model decline platform may further comprise the steps:
1) holds a device 2 and spud leg 7 lockings under the arm; Under hold a device 4 under the arm and keep released states with spud leg 7; Lock stud device 5 and spud leg 7 releases.
2) HYDRAULIC CONTROL SYSTEM hoist cylinder 3 stretches out, and holds a device 4 under the arm under promoting and moves down, and puts in place until hoist cylinder 3 strokes;
3) hold a device 4 and spud leg 7 lockings under under the arm; On hold device 2 and spud leg 7 releases under the arm;
4) HYDRAULIC CONTROL SYSTEM hoist cylinder 3 is regained, and holds a device 2 and platform in the drive under the arm and together moves down, and puts in place until hoist cylinder 3 strokes;
5) hold a device 2 and spud leg 7 lockings under the arm; Under hold device 4 and spud leg 7 releases under the arm;
6) return step 2), the step-by-step movement of implementation platform descends, until platform descend put in place after, lock stud device 5 and spud leg 7 lockings, on hold under the arm a device 2, down hold under the arm a device 4 all with spud leg 7 releases.
Above-mentioned each embodiment only is used to explain the utility model; Wherein the structure of each parts, connected mode etc. all can change to some extent; Every equivalents of on the basis of the utility model technical scheme, carrying out and improvement all should not got rid of outside the protection domain of the utility model.
Claims (10)
1. step type hydraulic lifting gear that is used for jack-up unit is characterized in that: it comprises that one is connected the solid stake tube of one with Platform Deck, is equipped with a spud leg in the said solid stake tube, and said spud leg lower end is passed said Platform Deck and is fixed on the seabed; Said solid stake tube inwall be set with one be used to lock, unclamp said spud leg on hold a device under the arm; Hold a device bottom on said under the arm and connect some hoist cylinders; The bottom of each said hoist cylinder is common connect one be used to lock, unclamp said spud leg a following device of holding under the arm, the said said solid stake tube inwall of holding a device below down under the arm be set with one be used to lock, unclamp said spud leg the lock stud device; Each said hoist cylinder connects hydraulic system.
2. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 1; It is characterized in that: hold a device on said under the arm and comprise and hold a device cylindrical shell under the arm; A said top of device cylinder body outer wall and the bottom of holding under the arm all is welded with some wing plates at interval; The other end of each said wing plate is welded on the said solid stake tube; The said middle part inwall of holding a device cylindrical shell under the arm is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; A said device cylindrical shell outside of holding under the arm is symmetrically arranged with two angling cylinders; One end of each said angling cylinder is arranged on the said wing plate; The other end connects a rotor plate, and the other end of said rotor plate passes the said long arc-shaped holes of offering on the device cylindrical shell of holding under the arm and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
3. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 1; It is characterized in that: said lock stud device comprises a cylindrical shell; The top of said cylinder body outer wall and bottom all are welded with some wing plates at interval; The other end of each said wing plate is welded on the said solid stake tube; The middle part inwall of said cylindrical shell is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; The said cylindrical shell outside is symmetrically arranged with two angling cylinders, and an end of each said angling cylinder is arranged on the said wing plate, and the other end connects a rotor plate, and the other end of said rotor plate passes the long arc-shaped holes of offering on the said cylindrical shell and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
4. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 2; It is characterized in that: said lock stud device comprises a cylindrical shell; The top of said cylinder body outer wall and bottom all are welded with some wing plates at interval; The other end of each said wing plate is welded on the said solid stake tube; The middle part inwall of said cylindrical shell is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; The said cylindrical shell outside is symmetrically arranged with two angling cylinders, and an end of each said angling cylinder is arranged on the said wing plate, and the other end connects a rotor plate, and the other end of said rotor plate passes the long arc-shaped holes of offering on the said cylindrical shell and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
5. like claim 1 or 2 or 3 or 4 described a kind of step type hydraulic lifting gears that are used for jack-up unit; It is characterized in that: hold a device under said under the arm and comprise and hold a device cylindrical shell under the arm; A said top of device cylinder body outer wall and the bottom of holding under the arm all is welded with some wing plates at interval; Leave the gap between the other end of each said wing plate and the said solid stake tube; The said middle part inwall of holding a device cylindrical shell under the arm is welded with two fixedly ring beams at interval, the two said rotation ring beams that fixedly are provided with between the ring beam, and said rotation ring beam circumferentially is arranged at intervals with the boss that the voussoir on the some and said spud leg matches; A said device cylindrical shell outside of holding under the arm is symmetrically arranged with two angling cylinders; One end of each said angling cylinder is arranged on the said wing plate; The other end connects a rotor plate, and the other end of said rotor plate passes the said long arc-shaped holes of offering on the device cylindrical shell of holding under the arm and connects said rotation ring beam; Each said angling cylinder connects hydraulic system.
6. like claim 2 or 3 or 4 described a kind of step type hydraulic lifting gears that are used for jack-up unit; It is characterized in that: hold under the arm on said between every pair of wing plate of top and bottom of cylinder body outer wall of a device and lock stud device and be provided with a riser; One face down bonding of each said riser is connected on said holding under the arm on the outer wall of device cylindrical shell, and opposite side is welded on the said solid stake tube; The top of said cylinder inboard wall and bottom all are welded with the tough stake plate of an annular.
7. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 5; It is characterized in that: be provided with a riser between every pair of wing plate of said cylinder body outer wall top of holding down a device under the arm and bottom; One face down bonding of each said riser is connected on the outer wall of said cylindrical shell, leaves the gap between opposite side and the said solid stake tube; The top of said cylinder inboard wall and bottom all are welded with the tough stake plate of an annular.
8. like claim 2 or 3 or 4 or 7 described a kind of step type hydraulic lifting gears that are used for jack-up unit, it is characterized in that: each said hoist cylinder is symmetrical set, and its quantity is a kind of in 4,6 and 8.
9. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 5, it is characterized in that: each said hoist cylinder is symmetrical set, and its quantity is a kind of in 4,6 and 8.
10. a kind of step type hydraulic lifting gear that is used for jack-up unit as claimed in claim 6, it is characterized in that: each said hoist cylinder is symmetrical set, and its quantity is a kind of in 4,6 and 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120105596 CN202099793U (en) | 2011-04-12 | 2011-04-12 | Step-type hydraulic lift used for jack-up platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120105596 CN202099793U (en) | 2011-04-12 | 2011-04-12 | Step-type hydraulic lift used for jack-up platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202099793U true CN202099793U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120105596 Expired - Lifetime CN202099793U (en) | 2011-04-12 | 2011-04-12 | Step-type hydraulic lift used for jack-up platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202099793U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397623A (en) * | 2013-08-06 | 2013-11-20 | 宁波捷胜海洋开发有限公司 | Offshore platform |
| CN103572744A (en) * | 2013-10-11 | 2014-02-12 | 武汉船用机械有限责任公司 | Lifting platform |
| CN104988894A (en) * | 2015-05-22 | 2015-10-21 | 南通中远船务工程有限公司 | Shaft sleeve type fully-continuous pile leg elevating device and method for offshore wind power installation vessel |
| CN106087931A (en) * | 2016-07-15 | 2016-11-09 | 武汉船用机械有限责任公司 | Combined type screw thread lowering or hoisting gear |
-
2011
- 2011-04-12 CN CN 201120105596 patent/CN202099793U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397623A (en) * | 2013-08-06 | 2013-11-20 | 宁波捷胜海洋开发有限公司 | Offshore platform |
| CN103397623B (en) * | 2013-08-06 | 2015-11-04 | 捷胜海洋装备股份有限公司 | A kind of offshore platform |
| CN103572744A (en) * | 2013-10-11 | 2014-02-12 | 武汉船用机械有限责任公司 | Lifting platform |
| CN103572744B (en) * | 2013-10-11 | 2015-12-02 | 武汉船用机械有限责任公司 | A kind of lift platform |
| CN104988894A (en) * | 2015-05-22 | 2015-10-21 | 南通中远船务工程有限公司 | Shaft sleeve type fully-continuous pile leg elevating device and method for offshore wind power installation vessel |
| CN106087931A (en) * | 2016-07-15 | 2016-11-09 | 武汉船用机械有限责任公司 | Combined type screw thread lowering or hoisting gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Center Patentee after: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Haiwangxing Ocean Engineering Technology Co., Ltd, Tianjin City |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |