CN105042186A - Device and method for maintaining and replacing vertical crude oil pipe of offshore platform - Google Patents
Device and method for maintaining and replacing vertical crude oil pipe of offshore platform Download PDFInfo
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- CN105042186A CN105042186A CN201510386074.8A CN201510386074A CN105042186A CN 105042186 A CN105042186 A CN 105042186A CN 201510386074 A CN201510386074 A CN 201510386074A CN 105042186 A CN105042186 A CN 105042186A
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- cabin
- crude oil
- standpipe
- waterproof
- waterproof cabin
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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
- F16L1/26—Repairing or joining pipes on or under water
Abstract
The invention provides a novel device for maintaining and replacing a vertical crude oil pipe of an offshore platform. The device comprises a water partition cabin and a plurality of connecting assemblies for connecting the water partition cabin with pile legs of the offshore platform. A through hole for the vertical crude oil pipe to penetrate through is formed in the bottom of the water partition cabin. The device further comprises a sealing piece. The sealing piece comprises a rubber sealing cylinder and a rubber sealing frustum which are sequentially arranged. The diameter of the upper bottom face of the rubber sealing frustum is smaller than that of the lower bottom face of the rubber sealing frustum. The rubber sealing cylinder is connected with the upper bottom face, with the small diameter, of the rubber sealing frustum. The sealing piece is provided with an inner cavity penetrating through the two axial end faces. The lower bottom face of the rubber sealing frustum is connected with the through hole. The invention further provides a method for maintaining and replacing the vertical crude oil pipe of the offshore platform. By means of the novel device for maintaining and replacing the vertical crude oil pipe of the offshore platform, the interior of the water partition cabin can be separated from seawater, and water can be prevented from entering the water partition cabin; when the lower portion of the water partition cabin is fixedly installed, operation is convenient, and the construction safety of workers can be guaranteed.
Description
Technical field
The present invention relates to the maintenance field of crude oil standpipe, particularly a kind of maintain and replace method of novel crude oil of offshore platform standpipe maintain and replace device and crude oil standpipe.
Background technique
Crude oil of offshore platform standpipe existing maintain and replace technology is divided into maintain and replace technology waterborne and underwater maintenance replacing technology according to damage location difference, above water standpipe maintain and replace adopts conventional method to cut more than the water surface and changes crude oil standpipe, can only keep in repair the standpipe section of more than the water surface.Underwater portion standpipe maintain and replace, can utilize a kind of crude oil of offshore platform standpipe maintenance unit to carry out the maintain and replace of crude oil standpipe; Above-mentioned maintenance unit comprises: waterproof cabin, and waterproof cabin is the holding cavity structure of an opening upwards, is provided with a through hole run through for crude oil standpipe bottom it; Suction pump, it is connected to the ponding extracted in cabin bottom waterproof cabin by pipeline and discharges out of my cabin; Connection part, connects waterproof cabin and offshore platform spud leg.But this maintenance unit also exists following problem: after 1, draw water in waterproof cabin inside, sealing effect is not may have seawater very well to enter; 2, waterproof cabin is put into the operation inconvenience of seawater and fixation procedure, and have potential safety hazard; 3, waterproof cabin sealed bottom needs diver's underwater operation, affects greatly by weather wave.
Summary of the invention
The present invention seeks to overcome the deficiencies in the prior art, providing a kind of novel crude oil of offshore platform standpipe maintain and replace device, it can make, and waterproof cabin is inner isolates with seawater, prevents waterproof cabin from intaking.
Another object of the present invention is a kind of maintain and replace method in order to provide crude oil of offshore platform standpipe.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of novel crude oil of offshore platform standpipe maintain and replace device, comprises the connection part of waterproof cabin and some groups of connection waterproof cabins and offshore platform spud leg, and the bottom of described waterproof cabin is provided with a through hole run through for crude oil standpipe; Also comprise Sealing, described Sealing comprises the rubber seal cylinder and rubber seal frustum that set gradually, and the diameter of the upper bottom surface of described rubber seal frustum is less than the diameter of bottom surface; Described rubber seal cylinder connects with the upper bottom surface of rubber seal frustum, and described Sealing is provided with the inner chamber running through rubber seal cylinder, rubber seal frustum and axial both ends of the surface; The bottom surface of described rubber seal frustum is connected with through hole.
As preferably, described connection part comprises two arc pipe clamps, for waterproof cabin being fixed on wire rope and the shackle of offshore platform spud leg; Described two arc pipes link and connect waterproof cabin, and one end of described wire rope is arranged on the first arc pipe clamp, and the other end of described wire rope is provided with described shackle.
As preferably, also comprise and hang assembly, described in hang assembly and comprise hand hoist and chain sling; The first end of described chain sling connects with arc pipe clamp, and the second end of described chain sling coordinates with hand hoist.
As preferably, also comprise a temporary structure being convenient to hang waterproof cabin and to waft platform, the described temporary structure stand that wafts is located on offshore platform spud leg, and the described temporary structure corresponding crude oil standpipe of platform that wafts is provided with an indent and surrounds mouth, and described indent is surrounded mouth and surrounded crude oil standpipe.
As preferably, the position that described rubber seal frustum connects with rubber seal cylinder is the first circular hole, and the diameter of described first circular hole is 560mm; The bottom surface of described rubber seal frustum is uncovered is the second circular hole, and the diameter of described second circular hole is 800mm.
As preferably, the edge that the bottom surface of described rubber seal frustum is uncovered is provided with the caulking gum sheet of a circle for water proof.
As preferably, the making material of described rubber seal frustum and rubber seal cylinder is the composite strengthening rubber that IR fiber cloth is made.
As preferably, described waterproof cabin comprises the main cabin body, secondary cabin body and the wave suppression plate that connect successively, and described main cabin body, secondary cabin body are by half Ti Huozheng cabin, cabin composition of two symmetries.
A maintain and replace method for crude oil of offshore platform standpipe, comprises the steps:
Step one: based on crude standpipe needs the position of safeguarding or changing to determine the design parameter of waterproof cabin;
Step 2: make waterproof cabin according to above-mentioned design parameter, the outer wall being included in waterproof cabin arranges connection part; Waterproof cabin working process divides two kinds of processing modes: 1, waterproof cabin is applied to the crude oil standpipe be cut off before waterproof cabin is transferred, and the main cabin body of waterproof cabin, secondary cabin body form by whole cabin, and Sealing is directly installed on the through hole bottom waterproof cabin; 2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe, the main cabin body of waterproof cabin, secondary cabin body are by half cabin body composition, a shaping Sealing outside crude oil standpipe more than the water surface, then waterproof cabin being arranged on outside has arranged outside the crude oil standpipe of Sealing, now Sealing is fixed on the through hole bottom waterproof cabin again;
Step 3: inject water ballast in waterproof cabin, now in cabin the water surface higher than the seawater water surface; Waterproof cabin is put under water along the waft transportation route of platform of temporary structure by staff;
Step 4: under waterproof cabin, water is to the crude oil standpipe position that need change; According to step 2, now carry out in two kinds of situation: 1, waterproof cabin is applied to the crude oil standpipe be cut off before waterproof cabin is transferred, waterproof cabin transfers to the port that crude oil standpipe is cut to, and crude oil standpipe enters Sealing through the through hole bottom waterproof cabin from bottom to top; 2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe, and waterproof cabin is displaced downwardly to the position that crude oil standpipe need be changed;
Step 5: waterproof cabin is fixedly mounted on offshore platform spud leg;
Step 6: start suction pump and the water in waterproof cabin is extracted out;
Step 7: safeguard or change crude oil standpipe.
As preferably,
Step 2: described connection part comprises two arc pipe clamps, described two arc pipes link and connect waterproof cabin;
In step 3, waterproof cabin is put under water along the waft transportation route of platform of temporary structure by staff, concrete mode is: the first end of a chain sling and arc pipe are linked and connect, second end of each chain sling connects a chain block, and then waterproof cabin is put under water by controlling chain sling by staff.
As preferably,
Step 2: described connection part comprises two arc pipe clamps, for waterproof cabin being fixed on wire rope and the shackle of offshore platform spud leg; Described two arc pipes link and connect waterproof cabin, and one end of described wire rope is arranged on the first arc pipe clamp, and the other end of described wire rope is provided with described shackle;
Step 5 is specially: waterproof cabin is close to offshore platform spud leg, is taken up by wire rope and at sea platform leg is interfixed by shackle and the second arc pipe clamp.
Compared with prior art, the present invention has following beneficial effect:
By arranging Sealing, water proof cavity space and seawater being kept apart, preventing waterproof cabin inside from having seawater to enter; By the connection part of wire rope, arc pipe clamp and shackle composition, make the operation of the fixation procedure of waterproof cabin more convenient; Wire rope, flexible material, pulling force is large, and weight is light, easy to operate and do not limit by confining space, and tighten up and loosen all easily, the arbitrary position in waterproof cabin decentralization process can be tightened up wire rope and be fixed waterproof cabin; Waterproof cabin is transferred and waterproof cabin underwater sealing operates all without the need to water operation under diver, and personnel can complete these work on the water, can ensure the construction safety of staff.Setting hangs assembly, controls transferring and promoting of waterproof cabin, and operation is easier and quick.By above-mentioned steps, ensure carrying out smoothly and ensureing the job safety of staff of crude oil standpipe replacing.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel crude oil of offshore platform standpipe maintain and replace device of the present invention;
Fig. 2 is the structural representation of Sealing of the present invention;
Fig. 3 is the structural representation that Sealing of the present invention omits rubber seal cylinder;
Fig. 4 is that temporary structure of the present invention wafts the structural representation of platform.
In figure:
1-waterproof cabin; 2-Sealing; 21-rubber seal frustum; 211-upper bottom surface; 212-bottom surface; 22-rubber seal cylinder; 31-arc pipe clamp; 32-wire rope; 41-chain sling; 42-hand hoist; 5-temporary structure wafts platform; 51-indent surrounds mouth; 52-table top; 6-crude oil standpipe.
Embodiment
Now the invention will be further described with specific embodiment by reference to the accompanying drawings, is used for explaining the present invention in exemplary embodiment and description of the present invention, but not as a limitation of the invention.
Referring to Fig. 1, is one of the present invention novel crude oil of offshore platform standpipe maintain and replace device.Comprise connection part and the Sealing 2 of waterproof cabin 1, some groups of connection waterproof cabins 1 and offshore platform spud leg.
Waterproof cabin 1 is the holding cavity structure of an opening upwards, is provided with a through hole run through for crude oil standpipe 6 bottom it.Corresponding waterproof cabin 1 is configured with suction pump, and suction pump is connected to bottom waterproof cabin 1 by pipeline, is extracted out out of my cabin by the ponding of waterproof cabin 1 bottom waterproof cabin 1.Waterproof cabin 1 comprises the main cabin body, secondary cabin body and the wave suppression plate that connect successively.The different design height of water proof can be realized by increasing and decreasing time quantity of cabin body.Main cabin body, secondary cabin body are by half Ti Huozheng cabin, cabin composition of two symmetries.As before water under waterproof cabin, crude oil standpipe 6 cuts off on the water, main cabin body, secondary cabin body form by whole cabin; As before water under waterproof cabin, crude oil standpipe 6 does not cut off, main cabin body, secondary cabin body are by two hemihedry cabin body compositions.Half symmetrical cabin body can realize open closed by rotatable bearing pin, by hasp quick locking.Described hasp is made up of stainless steel, utilizes the chucking power of itself formation of structure carry out pre-quick locking to two halves waterproof cabin 1 and open soon, quick locking two halves waterproof cabin 1 when closing for waterproof cabin 1.When waterproof cabin 1 closes, in closing seam face, two halves waterproof cabin 1 is provided with sealing column, is got up, prevent from leaking by the clearance seal of sealing column by two halves waterproof cabin 1.For strengthening sealing, between sealing column, be also provided with caulking gum.In addition, waterproof cabin 1 inwall is provided with cat ladder, and cat ladder is close to waterproof cabin 1 wall firm welding, passes in and out waterproof cabin 1 for staff; Detector for hazardous gas, underwater illuminating device and imaging means is also provided with in waterproof cabin 1.The safety attachment such as detector for hazardous gas, fire extinguisher is set simultaneously.
Refer to Fig. 1, connection part comprises two symmetrical arc pipe clamps 31, for waterproof cabin 1 being fixed on wire rope 32 and the shackle of offshore platform spud leg, two symmetrical arc pipe clamps 31 are fastening to be arranged on waterproof cabin 1 wallboard (two arc pipe clamps 31 be separately positioned on two halves cabin body outer wall and near the closed place of two halves cabin body), one end of wire rope 32 is fixed on the first arc pipe clamp 31, and the other end of wire rope 32 installs shackle.
When connection part is fastening, the closing seam face place by offshore platform spud leg of waterproof cabin 1 produces larger tensile stress and moment, and namely closing seam face can due to tensile stress, and sealing is destroyed.In order to prevent sealing to be destroyed, the position be connected with connection part at waterproof cabin 1 is provided with equalizer bar, and two arc pipe clamps 31 are tightly fixed together by equalizer bar, balance tensile stress and moment, ensures that closing seam face is airtight, does not intake in waterproof cabin 1.
Refer to Fig. 2 and Fig. 3, Sealing 2 comprises the rubber seal cylinder 22 and rubber seal frustum 21 that set gradually, rubber seal cylinder 22 and rubber seal frustum 21 are one, the diameter of the upper bottom surface 211 of rubber seal frustum 21 is less than the diameter of bottom surface 212, and rubber seal cylinder 22 connects with the upper bottom surface 211 of rubber seal frustum 21; Sealing 2 is provided with the inner chamber running through rubber seal cylinder 22, rubber seal frustum 21 and axial both ends of the surface, and the inner chamber of caulking gum cylinder 22 correspondence is cylinder type, and the inner chamber of rubber seal frustum 21 correspondence is frustum type.Sealing 2 enters waterproof cabin 1 inside for preventing and treating seawater.The position that rubber seal frustum 21 connects with rubber seal cylinder 22 is the first circular hole, the diameter of the first circular hole is that 560mm is (according to the crude oil standpipe 6 of different size or the difference of different platform surrounding ambient, size can be different), the bottom surface 212 of rubber seal frustum 21 is uncovered is the second circular hole, the diameter of the second circular hole is 800mm (according to the crude oil standpipe 6 of different size or the difference of different platform surrounding ambient, size can be different).The edge that the bottom surface 212 of rubber seal frustum 21 is uncovered is provided with the caulking gum sheet of a circle for water proof.The making material of rubber seal frustum 21 and rubber seal cylinder 22 is the composite strengthening rubber that the materials such as IR fiber cloth are made.
It is inner that waterproof cabin 1 is located at by rubber seal frustum 21 and rubber seal cylinder 22, and the bottom surface 212 of rubber seal frustum 21 is connected with the through hole bottom waterproof cabin.Rubber seal frustum 21 and rubber seal cylinder 22 can enter with the through hole bottom waterproof cabin and seal with row by caulking gum sheet, prevent seawater from entering in waterproof cabin.
Refer to Fig. 4, conveniently hang waterproof cabin 1, also comprise and hang assembly, hang assembly and comprise hand hoist 42 and chain sling 41.The first end of chain sling 41 connects with arc pipe clamp, and the second end of chain sling 41 coordinates with hand hoist 42.
Set up temporary structure at sea outside platform leg to waft platform 5, temporary structure waft the corresponding crude oil standpipe 6 of platform 5 be provided with one indent surround mouth 51, indent is surrounded mouth 51 and is surrounded crude oil standpipe 6 (before transferring waterproof cabin, waterproof cabin 1 is placed in indent and surrounds mouth 51, staff surrounds mouth 51 side in indent and controls to transfer waterproof cabin), it is table top 52 that indent surrounds mouth 51 side.The temporary structure platform 5 that wafts is convenient to control waterproof cabin 1 slippage and is entered water attitude, staff can temporary structure waft platform 5 table top 52 on control transferring of waterproof cabin 1.
Apply above-mentioned novel crude oil of offshore platform standpipe maintain and replace device, the maintain and replace method step of crude oil of offshore platform standpipe of the present invention is as follows:
Step one: based on crude standpipe 6 needs the degree of depth of the position setting waterproof cabin 1 safeguarded or change.Investigation offshore construction working condition, determines the design parameter of waterproof cabin 1.Waterproof cabin 1 comprises main cabin body, secondary cabin body and wave suppression plate.The quantity of secondary cabin body is more than or equal to one.By regulating time quantity of cabin body, can increase or reduce the designed depth of waterproof cabin 1.After determining designed depth, according to the quantity of the size determination closing seam face of waterproof cabin 1, hasp and waterproof cabin 1 connection part.
Step 2: make waterproof cabin according to above-mentioned parameter.In waterproof cabin working process, point two kinds of processing modes: 1, waterproof cabin is applied to the crude oil standpipe 6 be cut off before waterproof cabin is transferred, and the main cabin body of waterproof cabin, secondary cabin body form by whole cabin, and Sealing first installs the through hole bottom waterproof cabin; 2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe 6, the main cabin body of waterproof cabin, secondary cabin body are by half cabin body composition, crude oil standpipe 6 outer ring more than the water surface encloses composite strengthening rubber and situ vulcanized formation Sealing around one, then the outer also locking of crude oil standpipe 6 having arranged Sealing outside being enclosed in by half cabin body of waterproof cabin is closed, now Sealing is fixed on the through hole bottom waterproof cabin again.Therefore, waterproof cabin sealed bottom does not need staff's underwater operation, avoids Renewal process to affect by weather wave, also ensure that the safety of whole work progress.
Step 3: inject water ballast (now in cabin the water surface higher than the seawater water surface) in waterproof cabin.The first end of chain sling 41 hooks on arc pipe clamp (arc pipe clamp correspondence is provided with position, hole), and the second end of each chain sling 41 connects a chain block 42.Waterproof cabin 1, by controlling the second end of chain sling 41, is put under water along the waft transportation route of platform 5 of temporary structure by staff.(if do not arrange chain sling 41 and chain block 42, existing mode can be adopted to be put under water by waterproof cabin 1)
Step 4: waterproof cabin 1 time water is to the crude oil standpipe position that need change; According to step 2, now carry out in two kinds of situation: 1, waterproof cabin is applied to the crude oil standpipe 6 be cut off before waterproof cabin is transferred, when waterproof cabin transfers to the port that crude oil standpipe 6 is cut to, crude oil standpipe 6 enters Sealing through the through hole bottom waterproof cabin from bottom to top.2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe 6, and because crude oil standpipe 6 is in the inside of waterproof cabin, waterproof cabin is displaced downwardly to the position that crude oil standpipe 6 need be changed.
Step 5: waterproof cabin 1 is close to offshore platform spud leg, taken up by wire rope 32 and at sea platform leg is interfixed by shackle and the second arc pipe clamp, now waterproof cabin 1 is fastened on offshore platform spud leg; When needs are removed, only needing trips shackle just can.(if the connection part that crude oil of offshore platform standpipe maintain and replace device is arranged is not made up of arc pipe clamp 31, wire rope 32 and shackle, then adopt the mode corresponding to the connection part that reality is arranged to be fixed by waterproof cabin)
Step 6: start suction pump and the water in waterproof cabin 1 is extracted out.
Step 7: safeguard or change crude oil standpipe 6.Crude oil standpipe 6 comprises inner and outer tubes.Remove the combustion gas in crude oil standpipe 6, use cold work to cut pipe in crude oil standpipe 6, and keep ventilating in waterproof cabin 1.About crude oil standpipe 6 outer tube near sites to be cut, respectively tighten 1 clip, clip outer rim respectively welds 1 hanger.Use guide chain, steel cable are connected hanger with shackle, prevent standpipe from cutting open rear submerged riser under Gravitative Loads toward tenesmus.With gas flame cuttiug bending section crude oil standpipe 6 lower end outer tube, after the crude oil standpipe 6 that upper bend is out of shape is wound around suspender belt, winch is used to hang away.Measure bending section standpipe Cutting Length, the double-deck seamless steel pipe of cutting equal length, groove is prepared at inner and outer pipe two ends.By crude oil standpipe 6 outer tube changed from the right and left and upper lower standing tube outer tube group to, weld, ultrasonic flaw detection, weld bond touch-up paint and 3PE anticorrosion.
The part-structure feature of novel crude oil of offshore platform standpipe maintain and replace device of the present invention:
Rubber seal frustum 21 and rubber seal cylinder 22: be enclosed within outside crude oil standpipe 6, water proof cavity space and seawater are kept apart.
Wire rope 32 flexible material, pulling force is large, and weight is light, easy to operate and do not limit by confining space, and tighten up and loosen all easily, the arbitrary position in waterproof cabin 1 decentralization process can be tightened up wire rope 32 and be fixed waterproof cabin 1.Also the construction safety of staff can be ensured.
Novel crude oil of offshore platform standpipe maintain and replace device of the present invention, can make waterproof cabin 1 inside isolate with seawater, prevent waterproof cabin 1 from intaking; Below waterproof cabin 1 and fixed installation time, easy to operate and the construction safety of staff can be ensured.Crude oil standpipe maintain and replace method of the present invention ensures carrying out smoothly and ensureing the job safety of staff of crude oil standpipe replacing.
The present invention is not limited to above-mentioned mode of execution, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and variation.
Claims (11)
1. a novel crude oil of offshore platform standpipe maintain and replace device, comprises the connection part of waterproof cabin and some groups of connection waterproof cabins and offshore platform spud leg, and the bottom of described waterproof cabin is provided with a through hole run through for crude oil standpipe; It is characterized in that,
Also comprise Sealing, described Sealing comprises the rubber seal cylinder and rubber seal frustum that set gradually, and the diameter of the upper bottom surface of described rubber seal frustum is less than the diameter of bottom surface; Described rubber seal cylinder connects with the upper bottom surface of rubber seal frustum, and described Sealing is provided with the inner chamber running through rubber seal cylinder, rubber seal frustum and axial both ends of the surface; The bottom surface of described rubber seal frustum is connected with through hole.
2. novel crude oil of offshore platform standpipe maintain and replace device according to claim 1, is characterized in that, described connection part comprises two arc pipe clamps, for waterproof cabin being fixed on wire rope and the shackle of offshore platform spud leg; Described two arc pipes link and connect waterproof cabin, and one end of described wire rope is arranged on the first arc pipe clamp, and the other end of described wire rope is provided with described shackle.
3. novel crude oil of offshore platform standpipe maintain and replace device according to claim 2, is characterized in that, also comprise and hang assembly, described in hang assembly and comprise hand hoist and chain sling; The first end of described chain sling connects with arc pipe clamp, and the second end of described chain sling coordinates with hand hoist.
4. the novel crude oil of offshore platform standpipe maintain and replace device according to the arbitrary claim of claims 1 to 3, it is characterized in that, also comprise a temporary structure being convenient to hang waterproof cabin to waft platform, the described temporary structure stand that wafts is located on offshore platform spud leg, the described temporary structure corresponding crude oil standpipe of platform that wafts is provided with an indent and surrounds mouth, and described indent is surrounded mouth and surrounded crude oil standpipe.
5. novel crude oil of offshore platform standpipe maintain and replace device according to claim 1, it is characterized in that, the position that described rubber seal frustum connects with rubber seal cylinder is the first circular hole, and the diameter of described first circular hole is 560mm; The bottom surface of described rubber seal frustum is uncovered is the second circular hole, and the diameter of described second circular hole is 800mm.
6. novel crude oil of offshore platform standpipe maintain and replace device according to claim 1 or 5, it is characterized in that, the edge that the bottom surface of described rubber seal frustum is uncovered is provided with the caulking gum sheet of a circle for water proof.
7. novel crude oil of offshore platform standpipe maintain and replace device according to claim 1, it is characterized in that, the making material of described rubber seal frustum and rubber seal cylinder is the composite strengthening rubber that IR fiber cloth is made.
8. novel crude oil of offshore platform standpipe maintain and replace device according to claim 1, it is characterized in that, described waterproof cabin comprises the main cabin body, secondary cabin body and the wave suppression plate that connect successively, and described main cabin body, secondary cabin body are by half Ti Huozheng cabin, cabin composition of two symmetries.
9. a maintain and replace method for crude oil of offshore platform standpipe, is characterized in that, comprise the steps:
Step one: based on crude standpipe needs the position of safeguarding or changing to determine the design parameter of waterproof cabin;
Step 2: make waterproof cabin according to above-mentioned design parameter, the outer wall being included in waterproof cabin arranges connection part; Waterproof cabin working process divides two kinds of processing modes: 1, waterproof cabin is applied to the crude oil standpipe be cut off before waterproof cabin is transferred, and the main cabin body of waterproof cabin, secondary cabin body form by whole cabin, and Sealing is directly installed on the through hole bottom waterproof cabin; 2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe, the main cabin body of waterproof cabin, secondary cabin body are by half cabin body composition, a shaping Sealing outside crude oil standpipe more than the water surface, then waterproof cabin being arranged on outside has arranged outside the crude oil standpipe of Sealing, now Sealing is fixed on the through hole bottom waterproof cabin again;
Step 3: inject water ballast in waterproof cabin, now in cabin the water surface higher than the seawater water surface; Waterproof cabin is put under water along the waft transportation route of platform of temporary structure by staff;
Step 4: under waterproof cabin, water is to the crude oil standpipe position that need change; According to step 2, now carry out in two kinds of situation: 1, waterproof cabin is applied to the crude oil standpipe be cut off before waterproof cabin is transferred, waterproof cabin transfers to the port that crude oil standpipe is cut to, and crude oil standpipe enters Sealing through the through hole bottom waterproof cabin from bottom to top; 2, waterproof cabin is applied to before waterproof cabin is transferred does not have cut-off crude oil standpipe, and waterproof cabin is displaced downwardly to the position that crude oil standpipe need be changed;
Step 5: waterproof cabin is fixedly mounted on offshore platform spud leg;
Step 6: start suction pump and the water in waterproof cabin is extracted out;
Step 7: safeguard or change crude oil standpipe.
10. the maintain and replace method of crude oil of offshore platform standpipe according to claim 9, is characterized in that,
Step 2: described connection part comprises two arc pipe clamps, described two arc pipes link and connect waterproof cabin;
In step 3, waterproof cabin is put under water along the waft transportation route of platform of temporary structure by staff, concrete mode is: the first end of a chain sling and arc pipe are linked and connect, second end of each chain sling connects a chain block, and then waterproof cabin is put under water by controlling chain sling by staff.
The maintain and replace method of 11. crude oil of offshore platform standpipes according to the arbitrary claim of claim 9 or 10, is characterized in that,
Step 2: described connection part comprises two arc pipe clamps, for waterproof cabin being fixed on wire rope and the shackle of offshore platform spud leg; Described two arc pipes link and connect waterproof cabin, and one end of described wire rope is arranged on the first arc pipe clamp, and the other end of described wire rope is provided with described shackle;
Step 5 is specially: waterproof cabin is close to offshore platform spud leg, is taken up by wire rope and at sea platform leg is interfixed by shackle and the second arc pipe clamp.
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| CN201510386074.8A CN105042186B (en) | 2015-06-30 | 2015-06-30 | Crude oil of offshore platform standpipe repairs more changing device and crude oil standpipe maintenance replacing options |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109990139A (en) * | 2019-04-17 | 2019-07-09 | 海洋石油工程股份有限公司 | A method of it is replaced applied to crude oil of offshore platform standpipe |
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| CN102133692A (en) * | 2010-01-21 | 2011-07-27 | 中国石油天然气集团公司 | Floating butt-welding device for submarine pipeline |
| CN104006216A (en) * | 2013-02-27 | 2014-08-27 | 中国海洋石油总公司 | Offshore platform crude oil riser maintenance and replacement method and device |
| CN204785056U (en) * | 2015-06-30 | 2015-11-18 | 中国海洋石油总公司 | Device is changed in maintenance of offshore platform crude oil riser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990139A (en) * | 2019-04-17 | 2019-07-09 | 海洋石油工程股份有限公司 | A method of it is replaced applied to crude oil of offshore platform standpipe |
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|---|---|
| CN105042186B (en) | 2017-11-24 |
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Effective date of registration: 20170216 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Applicant after: CNOOC Energy Technology Co., Ltd. Applicant after: Energy development equipment technology Co., Ltd of CNOOC Applicant after: Zhanjiang Nanhai West Petroleum Hezhong Offshore Construction Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Energy Technology Co., Ltd. Applicant before: Zhanjiang Nanhai West Petroleum Hezhong Offshore Construction Co., Ltd. |
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Effective date of registration: 20200529 Address after: 100027, No. 6, east side street, Dongcheng District, Beijing Co-patentee after: CNOOC ENERGY DEVELOPMENT EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Co-patentee after: Zhanjiang Branch of CNOOC energy development equipment Technology Co.,Ltd. Address before: 100027, No. 6, east side street, Dongcheng District, Beijing Co-patentee before: CNOOC ENERGY DEVELOPMENT EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Co-patentee before: UNITED OFFSHORE CONSTRUCTION Co.,Ltd. CONHW ZHANJIANG |