CN102947534B - Subsea completions and well interventions using a vessel of opportunity - Google Patents
Subsea completions and well interventions using a vessel of opportunity Download PDFInfo
- Publication number
- CN102947534B CN102947534B CN201180029258.9A CN201180029258A CN102947534B CN 102947534 B CN102947534 B CN 102947534B CN 201180029258 A CN201180029258 A CN 201180029258A CN 102947534 B CN102947534 B CN 102947534B
- Authority
- CN
- China
- Prior art keywords
- ship
- well
- support apparatus
- service equipment
- equipment
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
- E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
Abstract
A system for performing a desired subsea well-servicing operation, comprises a vessel, a service apparatus for performing the desired subsea well-servicing operation, the service apparatus being supported on the vessel; and a support apparatus mounted on the vessel, the support apparatus having first and second modes, wherein in the first mode the support means does not provide access to a well by the service apparatus and wherein in the second mode the support means does provide access to a well by the service apparatus. The vessel may be a vessel of opportunity and the service apparatus may be selected from the group consisting of subsea tree installation apparatus, perforating apparatus, acidizing apparatus, fracturing apparatus, workover apparatus, reservoir stimulation apparatus, wireline apparatus, coiled tubing apparatus, and snubbing apparatus.
Description
Technical field
The present invention relates to the system and method for carrying out subsea-completed well or oil recovery reconditioning work (interventions) when not using drilling rig or drill ship.More specifically, the invention provides a kind of technology, by described technology, the equipment needed for submarine well work is arranged on random ship (vessel of opportunity), thus cost is significantly saved.
Background technology
The submarine well got out for the production of hydrocarbon needs to use offshore drilling boring tower or drill ship usually, and described offshore drilling boring tower or drill ship have the ability to support the heavy operation relevant with drilling well.Due to technical sophistication and its remarkable ability of drill ship, thus build drill ship costly and the expense of at present running every day is about 500,000.In addition, operational drill ship is little comparatively speaking.
Once get out well, then can implement multiple step and prepare for producing to make well.These steps are referred to as completion and/or oil recovery reconditioning work.Completion makes well prepare to carry out the process producing or inject, and can comprise sleeve pipe and oil pipe is installed or subsea tree installation, perforation, acidifying or pressure break.In addition, may be desirably in started produce after in well, carry out oil recovery reconditioning work.After such production, activity comprises well servicing, the reservoir modeling that cable, flexible pipe or no killing well well workover can be used to equip carry out and other is movable.
Portable offshore drilling unit (MODU) of usual use or drill ship carry out subsea-completed well.General use is used for the medium-sized oil recovery reconditioning work ship of heavier oil recovery reconditioning work process of such as no killing well well workover or well servicing or MODU carries out deep-water subsea well oil recovery reconditioning work.Because the drilling rig of MODU and drill ship are particularly suited for offshore drilling, thus they very expensive and therefore for completion or well servicing activity speech be not the best.Therefore, expect to provide a kind of system and equipment, this system and equipment is not when needing can to carry out completion when using offshore drilling boring tower or drill ship and/or well servicing is movable, and cost is low and oil recovery reconditioning work amount is light.
Summary of the invention
The invention provides a kind of when do not need use offshore drilling boring tower or drill ship for carrying out system and the equipment of completion and/or well servicing activity.Particularly, the present invention includes modularization completion equipment or other equipment to be combined with lifter and random ship makes the cost of various operation be reduced to lower than the cost used when using drilling rig or drill ship to carry out same operation.In addition, by using modular well servicing equipment, ready-made lifter technology and non-purpose built vessel, the present invention vacates drill ship costly.
In certain embodiments, the invention provides a kind of system for carrying out the submarine well attended operation expected, described system comprises: ship; For carrying out the service equipment of the submarine well attended operation expected; And support apparatus, described support apparatus is installed aboard ship and is supported service equipment.Support apparatus has first mode and the second pattern, and to make in a first mode, supporting arrangement does not provide service equipment to enter the path of well, and in a second mode, supporting arrangement provides the path that service equipment enters well.
Ship can be random ship and not be preferably drill ship.Ship can be equipped with one or more position holding device.Service equipment can be selected from the group comprising subsea tree erection unit, perforating apparatus, acidizing unit, fracturing unit, well servicing equipment, reservoir modeling equipment, rope equipment, flexible pipe equipment and no killing well workover rig.
In other embodiments, system provides a kind of system for carrying out the submarine well attended operation expected, described system comprises at least two ships and kept the floating platform that puts in place by described ship, wherein, described platform comprises: moon pool, and described moon pool extends through described platform; And boring tower, described boring tower is erected at above moon pool.Ship can be random ship.
As used in this, " well servicing " is used in reference to any operation can carried out on the offshore well built, and comprising: operation and the rear operation of production, geology sidetracking and mechanical sidetracking before producing.
Accompanying drawing explanation
With reference to accompanying drawing to understand the present invention in further detail, in accompanying drawing:
Fig. 1 and Fig. 2 is the schematic diagram that the first embodiment of the present invention is in transport pattern and operator scheme respectively;
Fig. 3 and Fig. 4 is the schematic diagram that the second embodiment of the present invention is in transport pattern and operator scheme respectively;
Fig. 5 and Fig. 6 is the schematic diagram that the third embodiment of the present invention is in transport pattern and operator scheme respectively;
Fig. 7 is the schematic diagram that the fourth embodiment of the present invention is in operator scheme.
Detailed description of the invention
First see figures.1.and.2, the present invention includes the ship 10 swum on sea 20.Ship 10 is equipped with boring tower 30, and described boring tower 30 can carry out one or more well servicing operations expected.
The well servicing that can be undertaken by boring tower 30 operates and includes but not limited to: oil pipe connect and under enter, subsea tree installation, perforation, acidifying, pressure break, well servicing, reservoir modeling, cable operate, flexible pipe operates and no killing well well workover.
Ship 10 can be any ship of the well servicing operation having the ability to support to expect.Therefore, according to operation, suitable random ship includes but not limited to barge, comprising: lay ship, bulk carrier, cable boat, all-container ship and ice breaker.The diversity of the ship that can apply in the present invention adds the quantity can considered for the ship of given operation and the needs eliminated the little drill ship of quantity comparatively speaking or drilling rig.Then, this reduces the cost relevant with completion to seabed production reconditioning work.
In certain embodiments, ship 10 can comprise Support bracket 32 etc., and boring tower 30 can be pivotally mounted on described Support bracket 32.Boring tower 30 is preferably horizontal or close to horizontal level during transporting, and after ship 10 has arrived at the objective on seabed above well (not shown), boring tower 30 as shown in the arrow 37 in Fig. 1 turn to vertical position (Fig. 2).Once boring tower 30 turns to vertical position, then described boring tower 30 can be supported by bracket 32 and vang 38 or other suitable supporting device any.In operating position, boring tower 30 is extended the stern of ship 10 with enough gaps, to allow the well servicing operation carrying out expecting.Although boring tower is shown as the stern place being arranged on ship 10, should be understood that, if desired, on the topside that described boring tower alternatively can be arranged on ship or fore place.In order to carry out well servicing operation, boring tower 30 is equipped with and carries out lifter 34 that desired operation may need and/or other system 36 multiple via standpipe 40.
In a preferred embodiment, ship 10 is equipped with all position holding devices as known in the art and/or is equipped with anchoring system.
Referring now to Fig. 3 and Fig. 4, alternate embodiments of the present invention is suitable for using together with flexible pipe system 50.Flexible pipe system 50 to be preferably mounted on slide rail 51 and to preferably include flexible pipe injection head 52, spool 54 and fastening 56.As shown in Figure 4, once ship 10 has arrived at the objective above well (not shown), then slide rail 51 transverse movement (as shown in arrow 57) is until injection head 52 has left ship, after this, can carry out flexible pipe well servicing in a conventional manner via standpipe 40.
Another alternate embodiments of the present invention comprises supporting structure, and described supporting structure is flat when transporting substantially, and once ship is erect in use after having arrived at objective.For example, referring to Fig. 5 and Fig. 6, structure 60 can comprise the deck 62 be bearing on many supporting legs 64, this deck supporting oil well servicing equipment 66 and optional supporting equipment 68.During transporting, supporting leg 64 is lowered or substantially horizontal.Once ship arrives at objective, then as shown in arrow 67ly hold up structure 60 like that, supporting leg 64 is rotated and is locked in vertical position, for the well servicing carried out via standpipe 40.
Referring now to Fig. 7, another embodiment of the present invention comprises floating platform 70, and described floating platform 70 is kept putting in place by two an or more ship 72.Every ship 72 is all connected to platform 70 by least one rope 74 and is preferably equipped with position-holding system (not shown).
Platform 70 preferably includes the moon pool 76 extending through described platform, and described moon pool 76 provides the shielded path entering ocean from platform surface.Boring tower 78 is preferably erected at above moon pool 76.Boring tower 78 can be transported to the well site on platform 70, or can be holded up after platform 70 puts in place.Boring tower 78 preferably includes the rig equipment of standard, and the rig equipment of described standard comprises one or more systems needed for operation of carrying out expecting.If desired, extra supporting system 80 can be arranged on or many in ship 72, and described extra supporting system 80 is connected to well system by flexible strand 82.Once ship 72 and platform 70 put in place at objective place, then can carry out via standpipe 40 operation expected.
In each embodiment disclosed herein, boring tower and/well servicing or well oil recovery reconditioning work equipment can be the unit be purchased, described unit preferably provides with modular status or complete state.Only illustrate, such equipment can comprise the automation pipe handling system and containerzation drilling rig that are such as purchased.
Because the submarine well used in the present invention safeguard equipment be modular and can be easy to transport and assembling, and because ship 10 is random ships, so, use and greatly reduce cost according to system of the present invention and increase the flexibility of submarine well attended operation aspect.
This modularization subsea-completed well runs equipment and can be combined with non-purpose built vessel.This module is used on random ship by the different harbours be relatively easily transported to all over the world.Thus this has vacateed the high drill ship of expense, to make described drill ship can be used for drilling well, and arbitrarily ship can carry out best completion with much lower day Subscription Price.Advantageously, can implement to prepare the major part work needed for ship in harbour.
Although disclose and describe the present invention according to preferred embodiment, should be understood that, multiple amendment can be carried out to the present invention when not departing from the scope of claims.Such as, supporting structure can be any suitable structure, include, but are not limited to the structure of any slip or pivotable, or described supporting structure can be assembled in a position, dangle at the stern of ship or topside to make described supporting structure thus the path entering submarine well is provided.
Claims (12)
1., for carrying out a system for the submarine well attended operation expected, described system comprises:
Ship, described ship is not drill ship or offshore drilling boring tower;
Service equipment, described service equipment is for carrying out the submarine well attended operation of described expectation, and described service equipment is supported on described ship; With
Support apparatus, described support apparatus is arranged on described ship, described support apparatus has first mode and the second pattern, wherein, in described first mode, described support apparatus does not provide described service equipment to enter the path of well, wherein, in described second pattern, described support apparatus provides the path that described service equipment enters well.
2. system according to claim 1, wherein, described ship is random ship.
3. system according to claim 1, wherein, in described first mode, described support apparatus does not support described service equipment, and in described second pattern, described support apparatus supports described service equipment.
4. system according to claim 1, wherein, described support apparatus all supports described service equipment in described first mode and described second pattern.
5. system according to claim 1, wherein, in described first mode, described support apparatus does not extend above the stern or topside of described ship, and in described second pattern, described support apparatus extends above the stern or topside of described ship.
6. system according to claim 1, wherein, described service equipment is selected from the group comprising subsea tree erection unit, perforating apparatus, acidizing unit, fracturing unit, well servicing equipment, reservoir modeling equipment, rope equipment, flexible pipe equipment and no killing well workover rig.
7. system according to claim 1, wherein, described support apparatus comprises Support bracket, described service equipment comprises the boring tower that can be pivotally mounted on described Support bracket, wherein, described boring tower is horizontal or close to horizontal level during transporting, and vertical position is turned to after described ship has been positioned at expectation place, and wherein, in described vertical position, described boring tower is extended stern or the topside of described ship with enough gaps, to allow the submarine well attended operation carrying out described expectation.
8. system according to claim 1, wherein, described support apparatus comprises slide rail, described service equipment comprises the flexible pipe system be arranged on described slide rail, and wherein, described flexible pipe system comprises flexible pipe injection head, spool and support equipment, and wherein, once described accommodation is in expectation place place, then described slide rail can transverse movement, until described injection head leaves described ship.
9. system according to claim 1, wherein, described support apparatus comprises a kind of structure, described structure can be substantially flat when transporting, and once described ship is erect in use after having arrived at objective, wherein, described service equipment is installed over the structure, and wherein when described structure is straightened, described service equipment is extended stern or the topside of described ship with enough gaps, to allow the submarine well attended operation carrying out described expectation.
10. system according to claim 1, wherein, described ship is equipped with position holding device.
11. 1 kinds of systems of submarine well attended operation for carrying out expecting, described system comprises:
At least two ships;
When at least two ships, be arranged on the supporting system on or many described ships; With
Floating platform, described floating platform is kept putting in place by described at least two ships, and wherein, described platform comprises: moon pool, and described moon pool extends through described platform; And boring tower, described boring tower is erected at above described moon pool.
12. systems for carrying out the submarine well attended operation expected according to claim 11, wherein, described at least two ships are random ships.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35435510P | 2010-06-14 | 2010-06-14 | |
| US61/354,355 | 2010-06-14 | ||
| PCT/US2011/039921 WO2011159563A2 (en) | 2010-06-14 | 2011-06-10 | Subsea completions and well interventions using a vessel of opportunity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102947534A CN102947534A (en) | 2013-02-27 |
| CN102947534B true CN102947534B (en) | 2015-04-29 |
Family
ID=45348799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180029258.9A Expired - Fee Related CN102947534B (en) | 2010-06-14 | 2011-06-10 | Subsea completions and well interventions using a vessel of opportunity |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130087090A1 (en) |
| CN (1) | CN102947534B (en) |
| AU (1) | AU2011268010A1 (en) |
| BR (1) | BR112012031637A2 (en) |
| GB (1) | GB2493885A (en) |
| NO (1) | NO20121567A1 (en) |
| WO (1) | WO2011159563A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234681A (en) * | 2013-06-18 | 2014-12-24 | 中国石油天然气股份有限公司 | Sea fracturing method |
| CN104608883B (en) * | 2015-01-30 | 2017-01-25 | 江苏科技大学 | Ship floating maintenance platform |
| WO2016201531A1 (en) * | 2015-06-18 | 2016-12-22 | Petróleo Brasileiro S.A. - Petrobras | Intervention and installation system for at least one production flow and elevation device inside at least one production riser in a floating production unit |
| CN106050212B (en) * | 2016-08-17 | 2018-10-26 | 中石化四机石油机械有限公司 | A kind of pressure break ship operating system |
| MX2020000364A (en) | 2017-07-13 | 2020-08-17 | Petroleo Brasileiro Sa Petrobras | Method of inserting a device in a subsea oil well, method of removing a device from a subsea oil well, and system for insertion and removal of a device in a subsea oil well. |
| CN112681992B (en) * | 2021-01-06 | 2023-08-15 | 中海油田服务股份有限公司 | Offshore operation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749162A (en) * | 1971-04-01 | 1973-07-31 | Global Marine Inc | Arctic oil and gas development |
| US4203504A (en) * | 1978-10-16 | 1980-05-20 | The Reynoir Company | Method and system for escaping from an offshore drilling platform |
| US4602894A (en) * | 1981-05-01 | 1986-07-29 | Marathon Manufacturing Company | Combination offshore drilling rig |
| CN1238824A (en) * | 1996-11-27 | 1999-12-15 | 挪威国家石油公司 | System, vessel, seabed installation and method for producing oil or gas |
| CN1817736A (en) * | 2006-03-21 | 2006-08-16 | 中国海洋石油总公司 | Flexible connection berthing method and apparatus for transferring oil on sea |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609544B1 (en) * | 2002-02-26 | 2003-08-26 | John P. Williamson | Method and apparatus for providing fluid transfer between a marine platform and a service vessel |
| WO2004009434A1 (en) * | 2002-07-23 | 2004-01-29 | Philip Head | Seabed installation apparatus |
| US7073457B2 (en) * | 2002-08-06 | 2006-07-11 | Fmc Technologies, Inc. | Duplex yoke mooring system |
| RU2330154C1 (en) * | 2004-05-03 | 2008-07-27 | Эксонмобил Апстрим Рисерч Компани , | System and vessel for technical servicing of offshore deposits |
| MX2009010386A (en) * | 2007-03-26 | 2009-10-19 | Technip France | Parallel drilling and completion for a dry tree floating production facility. |
-
2011
- 2011-06-10 GB GB1221804.6A patent/GB2493885A/en not_active Withdrawn
- 2011-06-10 BR BR112012031637A patent/BR112012031637A2/en not_active IP Right Cessation
- 2011-06-10 CN CN201180029258.9A patent/CN102947534B/en not_active Expired - Fee Related
- 2011-06-10 US US13/703,659 patent/US20130087090A1/en not_active Abandoned
- 2011-06-10 WO PCT/US2011/039921 patent/WO2011159563A2/en active Application Filing
- 2011-06-10 AU AU2011268010A patent/AU2011268010A1/en not_active Abandoned
-
2012
- 2012-12-20 NO NO20121567A patent/NO20121567A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749162A (en) * | 1971-04-01 | 1973-07-31 | Global Marine Inc | Arctic oil and gas development |
| US4203504A (en) * | 1978-10-16 | 1980-05-20 | The Reynoir Company | Method and system for escaping from an offshore drilling platform |
| US4602894A (en) * | 1981-05-01 | 1986-07-29 | Marathon Manufacturing Company | Combination offshore drilling rig |
| CN1238824A (en) * | 1996-11-27 | 1999-12-15 | 挪威国家石油公司 | System, vessel, seabed installation and method for producing oil or gas |
| CN1817736A (en) * | 2006-03-21 | 2006-08-16 | 中国海洋石油总公司 | Flexible connection berthing method and apparatus for transferring oil on sea |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102947534A (en) | 2013-02-27 |
| AU2011268010A1 (en) | 2013-01-10 |
| GB2493885A (en) | 2013-02-20 |
| WO2011159563A3 (en) | 2012-02-16 |
| WO2011159563A2 (en) | 2011-12-22 |
| US20130087090A1 (en) | 2013-04-11 |
| BR112012031637A2 (en) | 2017-05-23 |
| NO20121567A1 (en) | 2012-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102947534B (en) | Subsea completions and well interventions using a vessel of opportunity | |
| US6601649B2 (en) | Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible | |
| US8689881B2 (en) | Offshore unit and method of installing wellhead platform using the offshore unit | |
| CN100402371C (en) | Riser installation vessel and method of using the same | |
| US9567041B2 (en) | Docking and drilling stations for running self-standing risers and conducting drilling, production and storage operations | |
| CN107654192B (en) | Method and apparatus for drilling a plurality of subsea wells from an offshore platform at a single site | |
| AU2002256234A1 (en) | Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible | |
| EP1097287B1 (en) | Floating spar for supporting production risers | |
| JPH04285288A (en) | Method and equipment for performing sea oil well work | |
| AU2013276562A1 (en) | Light well intervention umbilical and flying lead management system and related methods | |
| US20200063530A1 (en) | Apparatus and Method | |
| CN104973225B (en) | A kind of floating production platform | |
| EP3368722A1 (en) | Offshore drilling unit | |
| CN107939311B (en) | Modularized small-sized well repair system suitable for being carried on FPSO | |
| WO2021054839A1 (en) | Subsea mounting of ancillary equipment on an elongate member | |
| KR20160004519U (en) | marine structure | |
| Eykhout et al. | An Integrated Floating Production Storage And Offloading System-Sals-In 380 Feet Water Depth | |
| Walker | The Design and Installation of the Buchan Field Subsea Equipment | |
| Schippers et al. | FPSO's and Installation Contracting: A Concept for Deep Water Development | |
| Childers et al. | Submerged System for Offshore Oil and Gas Production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20160610 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |