CN113464723A - Anchoring system for limiting unidirectional movement of deepwater sea pipe - Google Patents
Anchoring system for limiting unidirectional movement of deepwater sea pipe Download PDFInfo
- Publication number
- CN113464723A CN113464723A CN202110620131.XA CN202110620131A CN113464723A CN 113464723 A CN113464723 A CN 113464723A CN 202110620131 A CN202110620131 A CN 202110620131A CN 113464723 A CN113464723 A CN 113464723A
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- Prior art keywords
- wing plate
- joint
- sea pipe
- clasping
- deepwater
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- 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.)
- Pending
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000005188 flotation Methods 0.000 claims 2
- 230000000452 restraining effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000013587 production medium Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/14—Laying or reclaiming pipes on or under water between the surface and the bottom
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/201—Anchor rods
Abstract
The invention discloses an anchoring system for limiting unidirectional movement of a deepwater sea pipe, which comprises an online sea pipe joint, a joint clamp, an anti-skid clamp, a preassembled anchor chain and a temporary buoy, wherein the online sea pipe joint is sleeved and welded on the deepwater sea pipe, the joint clamp clamps the online sea pipe joint, the online sea pipe joint is provided with an annular convex ring abutting against one side of the joint clamp, the online sea pipe joint is also clamped with the anti-skid clamp abutting against the other side of the joint clamp, one end of the preassembled anchor chain is connected with the joint clamp, and the other end of the preassembled anchor chain is connected with the temporary buoy.
Description
Technical Field
The invention relates to the technical field of deepwater seabed marine pipe riser engineering, in particular to an anchoring system for limiting unidirectional movement of a deepwater marine pipe.
Background
The deep-water sea pipe belongs to the field of deep-water ocean engineering (water depth is more than 1000 m), and is mainly used for conveying production media between underwater production facilities and between the underwater production facilities and a floating platform. Steel catenary risers (hereinafter SCR) are generally considered to be deep water marine vessel-to-floating platform extensions. The SCR, driven by the motion of the floating platform, generates a certain tension load on the deepwater marine pipe connected to it and its end facilities (PLET, connectors, jumpers, etc.). If the load is too large, the submarine pipeline and end facilities are driven to move, the integrity of the connector and the jumper pipe is affected and even damaged, and the problems of leakage and the like are caused.
Disclosure of Invention
The present invention is intended to solve the above technical problems to some extent.
In view of the above, the present invention provides an anchoring system for limiting unidirectional movement of a deepwater marine pipe, which ensures feasibility of underwater connection through a temporary buoy, and provides reverse tension for unidirectional movement of the deepwater marine pipe by using an integral anchoring system as an extra tension bearing and transmitting system, so as to limit unidirectional movement of the deepwater marine pipe, and achieve the purpose of protecting integrity and safety of end facilities of the deepwater marine pipe and underwater facilities connected with the end facilities.
In order to solve the technical problem, the invention provides an anchoring system for limiting the unidirectional movement of a deepwater sea pipe, which comprises an online sea pipe joint, a joint holding clamp, an anti-skid holding clamp, a pre-installed anchor chain and a temporary buoy, wherein the online sea pipe joint is sleeved and welded on the deepwater sea pipe, the joint holding clamp holds the online sea pipe joint, the online sea pipe joint is provided with an annular convex ring abutting against one side of the joint holding clamp, the online sea pipe joint also holds the anti-skid holding clamp abutting against the other side of the joint holding clamp, one end of the pre-installed anchor chain is connected with the joint holding clamp, and the other end of the pre-installed anchor chain is connected with the temporary buoy.
Further, the joint holding clamp comprises an upper wing plate, a lower wing plate and a wing plate fastener, the upper wing plate and the lower wing plate are mutually buckled to form a clamp and a containing space of the joint holding clamp, and the upper wing plate and the lower wing plate are fixedly connected through the wing plate fastener.
Further, the male stage is fixed to the upper wing plate or the lower wing plate.
Further, the upper wing plate and the lower wing plate are both provided with anti-skid inner layers.
Further, reinforcing plates are fixed on the upper wing plate and the lower wing plate.
Further, the reinforcing plate is plural.
Furthermore, the upper wing plate and the lower wing plate are both fixed with a baffle plate which is abutted against the annular convex ring.
Further, the antiskid armful of card includes on the antiskid armful of card and antiskid lower armful of card, on the antiskid armful of card with the antiskid lower armful of card lock each other form the card with connect the accommodation space of armful of card, and on the antiskid armful of card with antiskid lower armful of card passes through it carries out fixed connection to embrace the card firmware.
Furthermore, the number of the preassembled anchor chains is two, and the two preassembled anchor chains are connected to two sides of the joint holding clamp.
Further, the preassembled anchor chain comprises a special end ring, an end ring, a common chain ring and a main reinforcing ring which are connected in sequence.
The invention has the technical effects that: (1) the reverse tension is provided for the unidirectional movement of the sea pipe, so that the unidirectional movement of the sea pipe is limited, and the purposes of protecting the integrity and the safety of facilities at the end part of the deepwater sea pipe and underwater facilities connected with the deepwater sea pipe are achieved.
(2) The anchoring system for limiting the unidirectional movement of the deepwater sea pipe has the characteristics of reliable structural strength and fatigue life and convenience in installation.
(3) By designing different components of the whole system, the deep water marine pipe tension device can basically meet the requirements of deep water marine pipes of various sizes and the use of different corresponding tension forces.
(4) The safe production of the underwater facilities of the deepwater oil and gas field is greatly ensured by using the anchoring system for limiting the unidirectional movement of the deepwater submarine pipe.
Drawings
FIG. 1 is a schematic structural view of an anchoring system for restricting unidirectional movement of a deepwater marine vessel in accordance with the present invention;
FIG. 2 is a schematic structural view of an in-line marine pipe joint of an anchoring system for restricting unidirectional movement of a deepwater marine pipe according to the present invention;
FIG. 3 is a schematic structural view of a joint clamp of an anchoring system for restricting unidirectional movement of a deepwater sea pipe according to the present invention;
FIG. 4 is a schematic structural diagram of an anti-slip clamp of an anchoring system for limiting unidirectional movement of a deepwater sea pipe according to the present invention;
fig. 5 is a schematic view of a pre-installed chain of an anchoring system for restricting unidirectional movement of a deepwater sea pipe according to the present invention.
Wherein, 1-online sea pipe joint; 2-clamping the connector; 3, anti-skid holding; 4-preassembling an anchor chain; 5-a temporary buoy; 6-positive grade; 7-an anti-slip inner layer; 8-a reinforcing plate; 9-deepwater sea pipes; 21-upper wing plate; 22-lower wing plate; 23-wing fasteners; 31-anti-skid upper holding clamp; 32-anti-slip lower holding clamp; 33-clamping the fastener; 91-special end ring; 92-an end ring; 93-common chain links; 94-a primary reinforcement ring; 95-snap ring.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
The system mainly comprises an online submarine pipe joint, a joint clamp, an anti-skidding clamp, a pre-installed anchor chain and a temporary buoy, wherein the clamp is installed on the submarine pipe joint after the submarine pipe joint is welded with a pipeline, and the clamp is connected with a suction pile through the pre-installed anchor chain.
As shown in fig. 1, 2 and 3, an anchoring system for limiting the unidirectional movement of a deepwater marine pipe comprises an online marine pipe joint 1, a joint holding clamp 2, an anti-skid holding clamp 3, a pre-installed anchor chain 9 and a temporary buoy 5, wherein the online marine pipe joint 1 is sleeved and welded on the deepwater marine pipe, the joint holding clamp 2 clamps the online marine pipe joint 1, the online marine pipe joint 1 is provided with an annular convex ring abutting against one side of the joint holding clamp 2, the online marine pipe joint 1 is also provided with the anti-skid holding clamp 3 abutting against the other side of the joint holding clamp 2, the joint holding clamp 2 is connected with one end of the pre-installed anchor chain 9, and the other end of the pre-installed anchor chain 9 is connected with the temporary buoy 5.
According to the specific embodiment of the invention, the anchoring system for limiting the unidirectional movement of the deepwater subsea pipe comprises an online subsea pipe joint 1, a joint clamp 2, an anti-skid clamp 3, a pre-installed anchor chain 9 and a temporary buoy 5, wherein the online subsea pipe joint 1 is welded on a pipeline, the joint clamp 2 and the anti-skid clamp 3 are installed on the online subsea pipe joint 1, the online subsea pipe joint 1 is welded on the pipeline, the joint clamp 2 and the anti-skid clamp 3 are installed on the subsea pipe joint, the pre-installed anchor chain 9 is installed at the designed position of the joint clamp 2 and underwater connection feasibility is guaranteed through the temporary buoy 5, and a set of structural system capable of limiting the unidirectional movement of the deepwater subsea pipe is formed through the connection.
Specifically, the design method of the online sea pipe joint 1 can bear 300 tons of tension and ensure 30-year underwater service life, and the pipe diameter over-proportion, material selection, in-place strength, installation strength and fatigue life are all adopted.
Specifically, the temporary buoy 5 is used for assisting in underwater connection, so that after the anchoring system is laid on the seabed along with a pipeline, the pre-installed anchor chain 5 connected with the temporary buoy 5 is suspended above the seabed, the underwater robot can conveniently perform connection operation, and the temporary buoy 5 is recovered after the pre-installed anchor chain 5 is connected.
Specifically, the joint clasping clamp 2 comprises an upper wing plate 21, a lower wing plate 22, a baffle plate 22, a reinforcing plate 8 and an anode 6, and the integral structure form, the shape of components, the material selection, the in-place strength, the installation strength, the fatigue life and the cathodic protection design can bear 300 tons of tension and ensure the 30-year underwater service life.
Specifically, the online marine pipe joint 1, the joint clamp 2 and the anti-skid clamp 3 are used as main bearing systems, a finite element method is used for carrying out integral structural design, and the working condition of a finite element model considers each stage of installation and operation of the anchoring system in the marine pipe. The design specifications are DNV-OS-F101, ASME VIII and API RP 2A, meanwhile, special fatigue life analysis is carried out on the welding seam position, the fatigue strength of the welding seam position is estimated mainly based on the recommended method in AWS D1.1 and DNV-RP-C203, the stress change range of the welding seam position calculated according to finite elements is calculated, and the fatigue life is estimated by using an S-N curve.
Specifically, the specific design proportion of different pipe diameter sections of the online marine pipe joint 1 is excessively considered so as to bear over 300 tons of reverse tension and have the service life of 30 years. The on-line joint is made of ASTM 694F65 material, so that weldability of the sea pipe and the joint can be guaranteed. The surface of the pipe joint is protected by an anti-corrosion coating, and the welding joint of the joint and the sea pipe is protected by a heat-shrinkable belt.
As shown in fig. 3, the connector clip 2 includes an upper wing plate 21, a lower wing plate 22 and a wing plate fastener 23, the upper wing plate 21 and the lower wing plate 22 are fastened to each other to form an accommodating space for the clip and the connector clip 2, and the upper wing plate 21 and the lower wing plate 22 are fixedly connected by the wing plate fastener 23.
As shown in fig. 3, the upper wing plate 21 or the lower wing plate 22 is fixed with the positive stage 6,.
As shown in fig. 3, the upper wing plate 21 and the lower wing plate 22 are provided with an anti-slip inner layer 7 to increase the friction force with the deepwater sea pipe.
As shown in fig. 3, the reinforcing plate 8 is fixed to each of the upper wing plate 21 and the lower wing plate 22.
According to the embodiment of the present invention, the reinforcing plate 8 is fixed to both the upper wing plate 21 and the lower wing plate 22, and the reinforcing plate 8 maintains structural stability.
As shown in fig. 3, there are a plurality of reinforcing plates 8, and the plurality of reinforcing plates 8 maintain structural stability.
As shown in fig. 3, the upper wing plate 21 and the lower wing plate 22 are each fixed with a baffle plate 22 that abuts against the annular collar.
Specifically, each component of the connector clamp 2 is designed through strength and fatigue so as to achieve the purposes of bearing over 300 tons of reverse tension and prolonging the service life of 30 years, the main component of the connector clamp is made of API 2H Gr50, the bolt is made of ASTM A193-B7/M, the nut is made of ASTM A194-2H/M, and the surface of the clamp is protected by an anti-corrosion coating and an anode.
As shown in fig. 4, the anti-slip clasping card 3 includes an anti-slip upper clasping card 31 and an anti-slip lower clasping card 32, the anti-slip upper clasping card 31 and the anti-slip lower clasping card 32 are fastened to each other to form a containing space for the card and the connector clasping card 2, and the anti-slip upper clasping card 31 and the anti-slip lower clasping card 32 are fixedly connected by a clasping fastener 33.
According to a specific embodiment of the invention, the anti-slip clamp 3 is composed of an anti-slip inner layer and a clamp, and the anti-slip layer mainly functions to prevent the anchor system from slipping in another direction which may occur in the process of laying the pipeline. The material for manufacturing the main body clasping clamp is API 2H Gr50, the material for connecting the bolt and the nut is ASTM A320L 7, and the inner-layer anti-skid layer is made of PU material.
Specifically, the clasping fastener 33 is a bolt and a nut.
As shown in fig. 5, there are two pre-installed anchor chains 4, and two pre-installed anchor chains 4 are connected to both sides of the connector clip 2.
As shown in fig. 5, the pre-assembled anchor chain 4 includes a special end ring 91, an end ring 92, a normal chain ring 93 and a main reinforcing ring 94, which are connected in sequence. A
According to the specific embodiment of the invention, the length of the pre-installed anchor chain 4, the design shape and size of the chain ring, the material selection and the in-place strength design method can bear 300 tons of tension and ensure the service life of 30 years of underwater, and meanwhile, the underwater connection of 1500 meters of water depth can be met.
Specifically, the preassembled anchor chain 4 further comprises a snap ring 95, and the snap ring 95 is connected with the special end ring 91.
Specifically, the preassembled anchor chain 4 is a part of the later-stage arrangement and connection anchor chain, and mainly aims to realize the underwater connection of the later-stage anchoring system and the suction pile, and the preassembled anchor chain consists of 1 clamping ring 95, 2 sections of special end rings 91, 2 sections of end rings 92, 5 sections of common R4 chain rings 93 and 1 main reinforcing ring 94, and is 3.8 meters in length.
The anchoring system for limiting the unidirectional movement of the deepwater sea pipe has the following use principle:
calculating tension required for limiting unidirectional movement of the pipeline according to the SCR motion analysis;
according to the online sea pipe joint design method provided by the invention, the structural form and the size of the joint are designed;
forging and manufacturing the online joint according to the joint material requirement and the manufacturing process provided by the invention;
according to the design method of the connector clamp and the anti-skid clamp, the structural form and the size of the clamp are designed;
assembling and manufacturing the holding clamp according to the material and the manufacturing process requirement provided by the invention;
according to the anchor chain design method provided by the invention, the structure and the length of the pre-installed anchor chain are designed;
according to the material and the manufacturing process requirement provided by the invention, the preassembled anchor chain is connected and manufactured;
in order to save the offshore construction time, welding, inspecting and node coating the online joint and the marine pipe section on the land according to the length of the laid marine pipe section, and then installing the joint clamp and the anti-skid clamp to the prefabricated pipe section containing the online joint by using bolts according to the design requirements;
transporting the sea pipe section containing the online joint and the clamp to a site pipe laying ship, and welding the preassembled pipe section with other pipe sections on line;
before a pipe section containing a joint and a clamp is launched, connecting a preassembled anchor chain and a temporary buoy to the clamp by using a snap ring, and temporarily fixing the buoy and the pipe body by using a binding band;
laying the marine pipe containing the anchoring system into water according to a required pipe laying process, and cutting off a binding belt for temporarily fixing the buoy by an underwater robot before the anchoring system deposits mud to ensure that the buoy of the anchoring system is suspended above the mud surface after the pipeline is laid in place;
and connecting the pre-installed anchor chain of the anchoring system in place with the underwater suction pile through the underwater robot, and recovering the temporary buoy.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides an anchor system of restriction deep water sea pipe one-way movement, its characterized in that includes online sea pipe joint, connects embraces the card, anti-skidding embraces the card, pre-installation anchor chain and interim flotation pontoon, online sea pipe joint cover is established and welded fastening on deep water sea pipe, connect to embrace the card and hold online sea pipe joint, online sea pipe joint have with connect the annular bulge loop that embraces card one side and lean on, online sea pipe joint still clamp be used for with connect to embrace the card opposite side and lean on anti-skidding embraces the card, connect to embrace the card and be connected with the one end of pre-installation anchor chain, the other end of pre-installation anchor chain is connected with interim flotation pontoon.
2. The anchoring system for limiting unidirectional movement of a deepwater marine vessel as claimed in claim 1, wherein said joint clasping comprises an upper wing plate, a lower wing plate and a wing plate fastener, said upper wing plate and said lower wing plate are mutually fastened to form a receiving space for said clasp and said joint clasping, and said upper wing plate and said lower wing plate are fixedly connected by said wing plate fastener.
3. An anchoring system for restricting unidirectional movement of a deepwater sea pipe as claimed in claim 2 wherein said male member is secured to said upper wing or said lower wing.
4. An anchoring system for restricting the unidirectional movement of a deepwater sea pipe as claimed in claim 2 wherein said upper and lower wing panels each have a non-slip inner layer.
5. The anchoring system for restricting the unidirectional movement of a deepwater marine vessel as recited in claim 2, wherein said upper wing plate and said lower wing plate are each fixed with a reinforcing plate.
6. An anchoring system for restricting the unidirectional movement of a deepwater sea pipe as claimed in claim 5 wherein said reinforcing plate is provided in plurality.
7. The anchoring system for limiting the unidirectional movement of a deepwater marine vessel as claimed in claim 2, wherein said upper wing plate and said lower wing plate are each fixed with a stop against which said annular collar abuts.
8. The anchoring system for limiting the unidirectional movement of the deepwater sea pipe as claimed in claim 1, wherein the anti-slip clasping comprises an anti-slip upper clasping and an anti-slip lower clasping, the anti-slip upper clasping and the anti-slip lower clasping are mutually buckled to form a containing space for the clamping and the joint clasping, and the anti-slip upper clasping and the anti-slip lower clasping are fixedly connected through the clasping fastener.
9. The anchoring system for restraining the unidirectional movement of a deepwater marine vessel as claimed in claim 1 wherein there are two pre-installed anchor chains, two of said pre-installed anchor chains being attached to both sides of said connector clip.
10. The anchoring system for restraining the unidirectional movement of a deepwater marine pipe as claimed in claim 1 wherein said pre-installed anchor chain comprises a special end ring, an end ring, a normal chain ring and a main reinforcement ring connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620131.XA CN113464723A (en) | 2021-06-03 | 2021-06-03 | Anchoring system for limiting unidirectional movement of deepwater sea pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620131.XA CN113464723A (en) | 2021-06-03 | 2021-06-03 | Anchoring system for limiting unidirectional movement of deepwater sea pipe |
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| CN113464723A true CN113464723A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110620131.XA Pending CN113464723A (en) | 2021-06-03 | 2021-06-03 | Anchoring system for limiting unidirectional movement of deepwater sea pipe |
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| CN (1) | CN113464723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294480A (en) * | 2021-12-07 | 2022-04-08 | 中国海洋石油集团有限公司 | Fixture for limiting bidirectional movement of deepwater sea pipe along axis |
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| JPH09310998A (en) * | 1996-05-23 | 1997-12-02 | Toshiba Corp | Sea water flowing equipment and its maintenance and repairing method |
| CN101434288A (en) * | 2008-11-25 | 2009-05-20 | 宝鸡石油机械有限责任公司 | Expansion joint of sea oil drilling and production vertical pipe system |
| CN201636464U (en) * | 2010-03-23 | 2010-11-17 | 上海锐迈重工有限公司 | Compact flange |
| WO2011070376A1 (en) * | 2009-12-11 | 2011-06-16 | Subsea 7 Limited | Pipeline hold back clamp |
| CN102990280A (en) * | 2012-09-24 | 2013-03-27 | 上海锐迈重工有限公司 | Ring gasket fixing method |
| CN105129641A (en) * | 2015-08-04 | 2015-12-09 | 中国石油大学(北京) | Pipe lifting platform for submarine pipeline repairing |
| KR101647282B1 (en) * | 2015-03-18 | 2016-08-16 | 주식회사 오션 | marine organism adhesion prevening device of marine intake pipe |
| CN207178924U (en) * | 2017-08-29 | 2018-04-03 | 艾法能源工程股份有限公司 | A kind of submarine pipeline bending arrestor of Fast Installation |
| CN109184559A (en) * | 2018-09-17 | 2019-01-11 | 海洋石油工程股份有限公司 | The login method of submarine pipeline |
| CN111911339A (en) * | 2020-07-08 | 2020-11-10 | 哈尔滨首捷智能科技有限公司 | Floating type tidal energy water turbine with surging power device |
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2021
- 2021-06-03 CN CN202110620131.XA patent/CN113464723A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310998A (en) * | 1996-05-23 | 1997-12-02 | Toshiba Corp | Sea water flowing equipment and its maintenance and repairing method |
| CN101434288A (en) * | 2008-11-25 | 2009-05-20 | 宝鸡石油机械有限责任公司 | Expansion joint of sea oil drilling and production vertical pipe system |
| WO2011070376A1 (en) * | 2009-12-11 | 2011-06-16 | Subsea 7 Limited | Pipeline hold back clamp |
| CN201636464U (en) * | 2010-03-23 | 2010-11-17 | 上海锐迈重工有限公司 | Compact flange |
| CN102990280A (en) * | 2012-09-24 | 2013-03-27 | 上海锐迈重工有限公司 | Ring gasket fixing method |
| KR101647282B1 (en) * | 2015-03-18 | 2016-08-16 | 주식회사 오션 | marine organism adhesion prevening device of marine intake pipe |
| CN105129641A (en) * | 2015-08-04 | 2015-12-09 | 中国石油大学(北京) | Pipe lifting platform for submarine pipeline repairing |
| CN207178924U (en) * | 2017-08-29 | 2018-04-03 | 艾法能源工程股份有限公司 | A kind of submarine pipeline bending arrestor of Fast Installation |
| CN109184559A (en) * | 2018-09-17 | 2019-01-11 | 海洋石油工程股份有限公司 | The login method of submarine pipeline |
| CN111911339A (en) * | 2020-07-08 | 2020-11-10 | 哈尔滨首捷智能科技有限公司 | Floating type tidal energy water turbine with surging power device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294480A (en) * | 2021-12-07 | 2022-04-08 | 中国海洋石油集团有限公司 | Fixture for limiting bidirectional movement of deepwater sea pipe along axis |
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Application publication date: 20211001 |