CN102705581A - Device for lowering and mounting submarine pipeline and crossing pipeline - Google Patents
Device for lowering and mounting submarine pipeline and crossing pipeline Download PDFInfo
- Publication number
- CN102705581A CN102705581A CN2012102108717A CN201210210871A CN102705581A CN 102705581 A CN102705581 A CN 102705581A CN 2012102108717 A CN2012102108717 A CN 2012102108717A CN 201210210871 A CN201210210871 A CN 201210210871A CN 102705581 A CN102705581 A CN 102705581A
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Abstract
The invention provides a device for lowering and mounting a submarine pipeline and a crossing pipeline. The device for lowering and mounting the submarine pipeline and the crossing pipeline is used for butting a submarine pipeline and a crossing pipeline, and comprises a support underframe (3), a pipeline clamp (1) for preliminarily centering the submarine pipeline, an upper support frame (2) and a pipeline clamping mechanism (4), wherein the pipeline clamp (1) is arranged on the support underframe (3) and is provided with a cavity (10) for accommodating the submarine pipeline; the upper support frame (2) is connected above the support underframe (3); the pipeline clamping mechanism (4) comprises a pipeline clamp (48) for clamping the crossing pipeline and a clamping hydraulic cylinder (46) which is connected with the pipeline clamp (48); the pipeline clamping mechanism (4) can move up and down and is connected to the upper support frame (2); and the pipeline clamp (48) can move back and forth and from side to side and is arranged on the upper support frame (2). By the device, the accuracy of lowering and mounting the submarine pipeline and the crossing pipeline is ensured.
Description
Technical field
The present invention relates to a kind of device that the seabed crossover piping is transferred installation that is used for, be mainly used in that crossover piping in the pipeline rehabilitation process is transferred and with the docking of submarine pipeline, guarantee the accurate butt-joint and the quiet run of pipeline in the pipeline rehabilitation process.
Background technique
Submarine pipeline is as " artery " of the operation of offshore oil gas engineering; Play crucial effects; Therefore after the damage accident of submarine pipeline took place like leak and corrosion etc., how keeping in repair submarine pipeline apace became a ring indispensable in the operation of offshore oil rock gas.When one section submarine pipeline because damaged or corrosion when comparatively serious; Need be with this segment pipe excision; And transfer two crossover pipings and pass through the butt joint of pipeline docking adapter respectively at the submarine pipeline that excision remains two ends; Finally transfer one section bend pipe two crossover pipings are linked together, accomplish the pipeline rehabilitation process.In crossover piping and submarine pipeline connection procedure because the pipeline centering inaccuracy that seabed external environment factor such as wave flow causes and causing can't provide support the corresponding constraint carrier that docking operation carries out smoothly etc. in the damaged pressure centering of pipe jointer, the two segment pipe docking operations.
Summary of the invention
The present invention provides a kind of key equipment that the seabed crossover piping is transferred installation that is used for; It mainly acts on is to solve because the pipeline centering inaccuracy that seabed external environment factors such as wave flow cause and cause in the damaged pressure centering of pipe jointer, the two segment pipe docking operations and can't provide support the problems such as corresponding constraint carrier that docking operation is carried out smoothly, confirms to transfer the steady safety with the pipeline docking operation.
For this reason, the present invention proposes a kind of device that the seabed crossover piping is transferred installation that is used for, and is used to dock submarine pipeline and crossover piping, and the said seabed crossover piping that is used for is transferred the device of installation and comprised: support underframe 3; The pipeline clip 1 of preliminary centering submarine pipeline is arranged on the said support underframe 3, and said pipeline clip 1 has the cavity 10 that holds said submarine pipeline; Upper support framework 2 is connected the top of said support underframe 3; Pipeline clamping device 4; The pipeline folder 48 and the clamping hydraulic cylinder 46 that is connected with said pipeline folder 48 that comprise the said crossover piping of clamping; Said pipeline clamping device 4 moving up and down being connected on the said upper support framework 2, and said pipeline folder 48 can move forward and backward with the said upper support framework 2 of being arranged on of move left and right on.
Further, said upper support framework 2, dismountable be connected can said support underframe 3 the top, said pipeline clamping device 4 is between said upper support framework 2 and said support underframe 3.
Further, said support underframe 3 comprises base plate 33 and is arranged on the column sleeve 32 on the said base plate 33 that said upper support framework 2 comprises: the suspension column 21 that is connected with said column sleeve 32.
Further, said upper support framework 2 also comprises: the I shape sheet frame 25 parallel with said base plate 33, said suspension column 21 is connected between said base plate 33 and the said I shape sheet frame 25.
Further, said upper support framework 2 also has the oil hydraulic cylinder 22 that moves up and down of the vertical said base plate 33 of flexible direction, and the said oil hydraulic cylinder 22 that moves up and down is connected with said pipeline clamping device 4.
Further; Said pipeline clamping device 4 also comprises: the oil hydraulic cylinder 43 that seesaws, side-to-side movement oil hydraulic cylinder 44, respectively connect the pipe protection clamp 47 of said seesaw oil hydraulic cylinder 43 and said side-to-side movement oil hydraulic cylinder 44, the guide rail 42 that seesaws of the track that seesaws is provided, the side-to-side movement guide rail 41 of side-to-side movement track is provided for said pipe protection clamp 47 for said pipe protection clamp 47; Said pipeline folder 48 is arranged on the said pipe protection clamp 47 with said clamping hydraulic cylinder 46, and said pipe protection clamp 47 provides support with said clamping hydraulic cylinder 46 for said pipeline folder 48.
Further; Said pipeline clamping device 4 also comprises: support 45, said pipe protection clamp 47, the oil hydraulic cylinder 43 that seesaws, side-to-side movement oil hydraulic cylinder 44, connect the said oil hydraulic cylinder 43 that seesaws respectively, said guide rail 42 and the said side-to-side movement guide rail 41 of seesawing all is arranged on the said support 45.
Further, said pipeline clip 1 comprises two sidewalls 11, and the width between said two sidewalls is 2.5 times of external diameter of said submarine pipeline.
Further, said pipeline clip 1 also comprises the roof 13 that is connected between said two sidewalls and is positioned at said two top side wall, in the bottom of said two sidewalls, is hollow between said two sidewalls.
The seabed crossover piping that is used for of the present invention is transferred the device of installation and is at first covered submarine pipeline through the pipeline clip and transfer, and realizes that the rough centering on the mechanical mechanism device is a preliminary centering, after accomplishing rough centering; By the oil hydraulic cylinder of three degree of freedom synergy all around up and down; Accomplish accurate centering,, can bear the impact of seabed factors such as wave flow owing to the load effect of oil hydraulic cylinder self; Also, the pipeline rehabilitation process is steadily carried out for docking operation provides a constraint carrier.
In the preliminary centering process, need not complicated theory and operation, just the centering work limit is carried out in certain the sphere of activities, for accurate centering at the back provides indispensable booster action.
Of the present inventionly be used for device that the seabed crossover piping transfers installation the clamping of crossover piping is realized by stretching of oil hydraulic cylinder with discharging, under the cooperation of ROV (underwater robot), can be completely achieved visual, the precision and the automation of operating process.
The seabed crossover piping that is used for of the present invention is transferred oil hydraulic cylinder and the clamping hydraulic cylinder of clamping pipeline of three-degree-of-freedom motion of the device of installation and all can be equipped with the hydraulic synchronous control system that has feedback effect accordingly, on details, guarantees the accuracy of hydraulic machinery motion realization.
Of the present inventionly be used for device that the seabed crossover piping transfers installation as effective mechanical mechanism; Simple in structure, principle is reliable, removably connects between upper support framework and the support underframe; Guarantee that it can cycle repeats use, for great amount of cost is practiced thrift in the offshore construction operation.
Description of drawings
Fig. 1 is the overall perspective view that the seabed crossover piping is transferred the device of installation that is used for according to the embodiment of the invention;
Fig. 2 is the structure according to the support underframe of the embodiment of the invention;
Fig. 3 is the structure according to the pipeline clip of the embodiment of the invention;
Fig. 4 is the cross-section structure according to the upper support framework of the embodiment of the invention;
Fig. 5 is the structure according to the pipeline clamping device of the embodiment of the invention.
The drawing reference numeral explanation:
1; Pipeline clip 10; Cavity 11; Sidewall 13; Roof 2; Upper support framework 21; Suspension column 22; Oil hydraulic cylinder 25 moves up and down; I shape sheet frame 3; Support underframe 32; Column sleeve 33; Base plate 4; Pipeline clamping device 41; Side-to-side movement guide rail 42; Guide rail 43 seesaws; Oil hydraulic cylinder 44 seesaws; Side-to-side movement oil hydraulic cylinder 45; Support 46; Clamping hydraulic cylinder 47; Pipe protection clamp 48; Pipeline folder 5; Crossover piping 51; Crossover piping elbow 6; Submarine pipeline
Embodiment
To understand in order technical characteristics of the present invention, purpose and effect being had more clearly, to contrast description of drawings embodiment of the present invention at present.
As shown in Figure 1, be used for the device that the seabed crossover piping is transferred installation according to the embodiment of the invention a kind of, be used to dock submarine pipeline 6 and crossover piping 5, the said seabed crossover piping that is used for is transferred the device of installation and is comprised: support underframe 3; The pipeline clip 1 of preliminary centering submarine pipeline is arranged on the said support underframe 3, and as shown in Figure 3, said pipeline clip 1 has the cavity 10 that holds said submarine pipeline; Upper support framework 2 is connected the top of said support underframe 3; Pipeline clamping device 4 comprises the pipeline folder 48 of the said crossover piping of clamping and the clamping hydraulic cylinder 46 that is connected with said pipeline folder 48.
Supporting underframe 3 provides support for pipeline clip 1, upper support framework 2 and pipeline clamping device 4; When pipeline clip 1, upper support framework 2 and pipeline clamping device 4 during at seabed operation; Support underframe 3 stable be supported on the seabed, for the operation of above-mentioned each parts provides support.Pipeline clip 1 covers submarine pipeline and transfers, and realizes that the rough centering on the mechanical mechanism device is a preliminary centering, for accurate centering at the back provides indispensable booster action.
Said pipeline clamping device 4 moving up and down being connected on the said upper support framework 2; And said pipeline folder 48 can move forward and backward with the said upper support framework 2 of being arranged on of move left and right on; So that after accomplishing rough centering, further accomplish accurate centering.Pipeline folder 48 is for driving the clamping part of clamping crossover piping 5 through clamping hydraulic cylinder 46, for example pipeline folder 48 is a clip.
Further; Said upper support framework 2, dismountable be connected can said support underframe 3 the top, said pipeline clamping device 4 is between said upper support framework 2 and said support underframe 3; Like this; Both helped being used for the integrally-built compactness that the seabed crossover piping is transferred the device of installation, helped crossover piping 5 is folded between support underframe 3 and the upper support framework 2 constraint crossover piping 5 again.。Removably connecting between upper support framework and the support underframe, guarantee that it can cycle repeats use, is that great amount of cost is practiced thrift in the offshore construction operation.
Further, like Fig. 2 and shown in Figure 4, said support underframe 3 comprises base plate 33 and is arranged on the column sleeve 32 on the said base plate 33 that said upper support framework 2 comprises: the suspension column 21 that is connected with said column sleeve 32.Column sleeve 32 is the sleeve of column, and suspension column 21 is the supporting foot of column, supports suspension column 21 and can be connected through hydraulic bolt with column sleeve 32, can realize the function freely dismantled, stable performance like this.Among the present invention, supporting suspension column 21 is four, connects stable.
Further, as shown in Figure 4, said upper support framework 2 also comprises: the I shape sheet frame 25 parallel with said base plate 33, said suspension column 21 is connected between said base plate 33 and the said I shape sheet frame 25.Adopt I shape sheet frame 25 to help weight reduction, also be convenient to, thereby upper support framework 2 is disassembled from supporting underframe 3 upper support framework 2 application of forces.
Further; As shown in Figure 4; Said upper support framework 2 also has the oil hydraulic cylinder 22 that moves up and down of the vertical said base plate 33 of flexible direction; The said oil hydraulic cylinder 22 that moves up and down is connected with said pipeline clamping device 4, drives said pipeline clamping device 4 and moves up and down, thereby adjusted the upper-lower position of crossover piping 5.
Further; As shown in Figure 5; Said pipeline clamping device 4 also comprises: the oil hydraulic cylinder 43 that seesaws, side-to-side movement oil hydraulic cylinder 44, respectively connect the pipe protection clamp 47 of said seesaw oil hydraulic cylinder 43 and said side-to-side movement oil hydraulic cylinder 44, the guide rail 42 that seesaws of the track that seesaws is provided, the side-to-side movement guide rail 41 of side-to-side movement track is provided for said pipe protection clamp 47 for said pipe protection clamp 47; Said pipeline folder 48 is arranged on the said pipe protection clamp 47 with said clamping hydraulic cylinder 46; Said pipe protection clamp 47 provides support with said clamping hydraulic cylinder 46 for said pipeline folder 48, and pipe protection clamp 47 is provided with the pipeline folder 48 of a plurality of clamping crossover pipings 5, and pipe protection clamp 47 is the bearing of a plurality of pipeline folders 48; Pipe protection clamp 47 moves, and then pipeline folder 48 is being with crossover piping 5 to move.
Seesaw guide rail 42, side-to-side movement guide rail 41 is linear rail; The oil hydraulic cylinder 43 that seesaws drives pipe protection clamp 47 respectively with side-to-side movement oil hydraulic cylinder 44 and moves forward and backward and move left and right, thereby pipeline clamping device 4 or pipeline folder 48 all pass through hydraulic driving on three orthogonal stereo directionals; Make the adjustment of crossover piping 53 D stereos accurately; Can on the basis of preliminary centering, realize accurate centering, thereby accomplish submarine pipeline butt joint operation.
Further; Said pipeline clamping device 4 as shown in Figure 5 also comprises: support 45, said pipe protection clamp 47, the oil hydraulic cylinder 43 that seesaws, side-to-side movement oil hydraulic cylinder 44, connect the said oil hydraulic cylinder 43 that seesaws respectively, said guide rail 42 and the said side-to-side movement guide rail 41 of seesawing all is arranged on the said support 45.Support 45 provides support for each oil hydraulic cylinder, pipe protection clamp 47 and each track.
Further, as shown in Figure 3, said pipeline clip 1 has the cavity 10 that holds said submarine pipeline.Said pipeline clip 1 comprises that 11, two sidewalls of two sidewalls 11 form the space of preliminary clamping submarine pipeline 6.Width between said two sidewalls is 2.5 times of external diameter of said submarine pipeline, like this, can adapt to the situation in seabed, realizes preliminary centering.
As shown in Figure 3, further, said pipeline clip 1 comprises that also 13, two sidewalls 11 of roof that are connected between said two sidewalls and are positioned at said two top side wall are supported on the base 15 of pipeline clip 1, and base 15 is fixedly connected with base plate 33.Bottom at said two sidewalls 11; Between said two sidewalls hollow; That is to say do not have the diapire that connects two sidewalls 11 between two sidewalls 11, is not directly to link to each other between two sections bases 15 in other words; Break off, thus for pipeline clip 1 from top to bottom centering submarine pipeline 6 space is provided.Pipeline clip 1 is positioned at the front side of supporting underframe 3, and promptly pipeline clip 1 stretches out and supports underframe 3, and base 15 can be concordant with base plate 33, so that for docking identical absolute altitude is provided.
Of the present inventionly be used for the device that the seabed crossover piping is transferred installation; Earlier pipeline clip 1 being covered submarine pipeline 6 transfers; The assistance of robot realizes that down the rough centering on the mechanical mechanism device is a preliminary centering under water; At the height of crossover piping arrival with the submarine pipeline approximate horizontal, pipeline clamping device 4 promotes clamping crossover pipings 5 through the oil hydraulic cylinder 43 that seesaws pipe protection clamp 47 slides at the guide rail 42 that seesaws, and realizes seesawing; The pipe protection clamp 47 that promotes clamping crossover pipings 5 through side-to-side movement oil hydraulic cylinder 44 slides at side-to-side movement guide rail 41, realizes side-to-side movement, up and down before and after on the three degree of freedom direction synergy realize pipeline to neutralization connection work.
After mating operation is accomplished, but the lifting structure of each oil hydraulic cylinder of three-degree-of-freedom motion and submarine pipeline synergy makes and supports underframe 3 carrying crossover pipings 5; This moment, the fixing device of crossover piping curved section was transferred; Crossover piping elbow part 51 is fixing, and crossover piping can not be rolled can not slide, after crossover piping 5 fixedly finishes; Clamping hydraulic cylinder 46 retractions of clamping crossover piping 5, crossover piping 5 is unclamped in coupled rotating pipe folder 48 rotations.
The present invention is applicable to the installation of transferring of seabed crossover piping in the submarine pipeline repair process, and is special: 1 rough centering of the present invention (preliminary centering) combines with accurate centering based on hydraulic control, guarantees to transfer the accuracy in the installation; 2 devices of the present invention have utilized the loading functional of oil hydraulic cylinder, the maintenance of easy-to-operat and pipeline; 3 end of the present invention crossover pipings to transfer erecting device simple in structure, principle is reliable, and is recyclable, reduced manufacture cost.
The above is merely the schematic embodiment of the present invention, is not in order to limit scope of the present invention.For each constituent element of the present invention can make up under the condition of not conflicting each other, any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (9)
1. one kind is used for the device that the seabed crossover piping is transferred installation, is used to dock submarine pipeline (6) and crossover piping (5), it is characterized in that, the said seabed crossover piping that is used for is transferred the device of installation and comprised:
Support underframe (3);
The pipeline clip (1) of preliminary centering submarine pipeline is arranged on the said support underframe (3), and said pipeline clip (1) has the cavity (10) that holds said submarine pipeline;
Upper support framework (2) is connected the top of said support underframe (3);
Pipeline clamping device (4); The pipeline folder (48) and the clamping hydraulic cylinder (46) that is connected with said pipeline folder (48) that comprise the said crossover piping of clamping; Said pipeline clamping device (4) is moving up and down to be connected on the said upper support framework (2), and said pipeline folder (48) can move forward and backward with the said upper support framework of being arranged on of move left and right (2) on.
2. as claimed in claim 1ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said upper support framework (2); Dismountable be connected can said support underframe (3) the top, said pipeline clamping device (4) is positioned between said upper support framework (2) and the said support underframe (3).
3. as claimed in claim 2ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said support underframe (3) comprises base plate (33) and is arranged on the column sleeve (32) on the said base plate (33) that said upper support framework (2) comprising: the suspension column (21) that is connected with said column sleeve (32).
4. as claimed in claim 3ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said upper support framework (2) also comprises: the I shape sheet frame (25) parallel with said base plate (33), said suspension column (21) is connected between said base plate (33) and the said I shape sheet frame (25).
5. as claimed in claim 3ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said upper support framework (2) also has the oil hydraulic cylinder that moves up and down (22) of the vertical said base plate of flexible direction (33), and the said oil hydraulic cylinder that moves up and down (22) is connected with said pipeline clamping device (4).
6. as claimed in claim 1ly be used for the device that the seabed crossover piping is transferred installation, it is characterized in that,
Said pipeline clamping device (4) also comprises: the oil hydraulic cylinder that seesaws (43), side-to-side movement oil hydraulic cylinder (44), respectively connect the pipe protection clamp (47) of said oil hydraulic cylinder that seesaws (43) and said side-to-side movement oil hydraulic cylinder (44), the guide rail that seesaws (42) of the track that seesaws is provided, the side-to-side movement guide rail (41) of side-to-side movement track is provided for said pipe protection clamp (47) for said pipe protection clamp (47); Said pipeline folder (48) and said clamping hydraulic cylinder (46) are arranged on the said pipe protection clamp (47), and said pipe protection clamp (47) presss from both sides (48) for said pipeline and said clamping hydraulic cylinder (46) provides support.
7. as claimed in claim 6ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said pipeline clamping device (4) also comprises: support (45), connects the said oil hydraulic cylinder that seesaws (43), the said guide rail that seesaws (42) and said side-to-side movement guide rail (41) respectively and all is arranged on the said support (45) said pipe protection clamp (47), the oil hydraulic cylinder that seesaws (43), side-to-side movement oil hydraulic cylinder (44).
8. as claimed in claim 1ly be used for the device that the seabed crossover piping is transferred installation, it is characterized in that said pipeline clip (1) comprises two sidewalls (11), the width between said two sidewalls is 2.5 times of external diameter of said submarine pipeline.
9. as claimed in claim 8ly be used for the device that the seabed crossover piping is transferred installation; It is characterized in that; Said pipeline clip (1) also comprises the roof (13) that is connected between said two sidewalls and is positioned at said two top side wall; In the bottom of said two sidewalls, between said two sidewalls hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102108717A CN102705581A (en) | 2012-06-20 | 2012-06-20 | Device for lowering and mounting submarine pipeline and crossing pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102108717A CN102705581A (en) | 2012-06-20 | 2012-06-20 | Device for lowering and mounting submarine pipeline and crossing pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102705581A true CN102705581A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102108717A Pending CN102705581A (en) | 2012-06-20 | 2012-06-20 | Device for lowering and mounting submarine pipeline and crossing pipeline |
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| Country | Link |
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| CN (1) | CN102705581A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333227A (en) * | 2015-11-11 | 2016-02-17 | 哈尔滨工程大学 | Structure support device for treating suspended span of submarine pipeline |
| CN109268577A (en) * | 2018-11-15 | 2019-01-25 | 重庆梦马致新科技有限公司 | A kind of upper mo(u)ld bottom half pipeline docking facilities |
| CN111550603A (en) * | 2020-04-30 | 2020-08-18 | 朱庆辉 | Sewage pipe butt joint device |
| CN111678958A (en) * | 2020-06-09 | 2020-09-18 | 美钻能源科技(上海)有限公司 | Accumulated sand monitoring device, seabed oil production device and accumulated sand monitoring method |
| CN112360405A (en) * | 2020-11-04 | 2021-02-12 | 山东华冠能源技术有限公司 | Filling tool and method for multiple screen pipes |
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| CN2448508Y (en) * | 2000-11-14 | 2001-09-19 | 胜利石油管理局工程建设一公司三分公司 | Auxiliary butt joint device for offshore welding of submarine pipeline |
| US20070009328A1 (en) * | 2003-05-28 | 2007-01-11 | Vetco Aibel As | Spool piece termination structure, a connection arrangement comprising such a termination structure and a pipeline termination |
| CN101929583A (en) * | 2009-06-19 | 2010-12-29 | 中国海洋石油总公司 | Deep water submarine pipeline axial aiming machine |
| CN102242829A (en) * | 2011-05-26 | 2011-11-16 | 中国海洋石油总公司 | Pipeline external centring device |
| CN202769045U (en) * | 2012-06-20 | 2013-03-06 | 中国石油大学(北京) | Device for lowering and mounting sea floor bridging pipes |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333227A (en) * | 2015-11-11 | 2016-02-17 | 哈尔滨工程大学 | Structure support device for treating suspended span of submarine pipeline |
| CN105333227B (en) * | 2015-11-11 | 2017-04-12 | 哈尔滨工程大学 | Structure support device for treating suspended span of submarine pipeline |
| CN109268577A (en) * | 2018-11-15 | 2019-01-25 | 重庆梦马致新科技有限公司 | A kind of upper mo(u)ld bottom half pipeline docking facilities |
| CN109268577B (en) * | 2018-11-15 | 2020-08-25 | 重庆梦马致新科技有限公司 | Upper and lower type pipeline interfacing apparatus |
| CN111550603A (en) * | 2020-04-30 | 2020-08-18 | 朱庆辉 | Sewage pipe butt joint device |
| CN111550603B (en) * | 2020-04-30 | 2021-06-22 | 朱庆辉 | Sewage pipe butt joint device |
| CN111678958A (en) * | 2020-06-09 | 2020-09-18 | 美钻能源科技(上海)有限公司 | Accumulated sand monitoring device, seabed oil production device and accumulated sand monitoring method |
| CN111678958B (en) * | 2020-06-09 | 2021-06-29 | 美钻能源科技(上海)有限公司 | Accumulated sand monitoring device, seabed oil production device and accumulated sand monitoring method |
| CN112360405A (en) * | 2020-11-04 | 2021-02-12 | 山东华冠能源技术有限公司 | Filling tool and method for multiple screen pipes |
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Application publication date: 20121003 |