CN109738215B - Test method for endurance test of self-elevating drilling platform by applying wharf water tank - Google Patents
Test method for endurance test of self-elevating drilling platform by applying wharf water tank Download PDFInfo
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- CN109738215B CN109738215B CN201811592558.8A CN201811592558A CN109738215B CN 109738215 B CN109738215 B CN 109738215B CN 201811592558 A CN201811592558 A CN 201811592558A CN 109738215 B CN109738215 B CN 109738215B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 title claims abstract description 19
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 239000013535 sea water Substances 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a test method for performing an endurance test on a self-elevating drilling platform by using a wharf water tank, which comprises the following steps of: A. a hole is formed in the upper surface of the wharf water tank, and a propeller guide frame is arranged above the hole; B. a hole is formed in the position, close to the sea, of the wharf water tank, and high-pressure seawater sprayed out of a pressure regulating plug at the bottom of a propeller enters the water tank, and then flows into a sea area below the wharf through an overflow hose to an overflow hole; C. sealing the bottom of the wharf water tank and the wharf ground, and injecting a proper amount of seawater into the wharf water tank; D. and sliding the cantilever beam to the position right above the wharf water tank to enable the propeller to be aligned with the wharf water tank, driving the propeller to be completely immersed in seawater in the wharf water tank by the descending roof, starting a high-pressure slurry pump to establish system pressure required by the test, and driving the propeller to rotate in the wharf water tank by the rotating roof. The test method of the invention ensures that the self-elevating drilling platform can complete the whole endurance test at the wharf without needing to shift to the sea for endurance test, thereby saving a large amount of cost and working hours.
Description
Technical Field
The invention relates to a test method for performing an endurance test on a self-elevating drilling platform by using a wharf water tank.
Background
The self-elevating drilling platform usually selects a docking station at the stern part of the platform in the process of building and debugging, a main hull part of the self-elevating drilling platform is a triangular box structure based on the self-elevating drilling platform, each vertex area of the triangle is provided with one spud leg and three spud legs, the platform stern part is provided with two spud legs at the bottom edge of the triangle, and areas such as a drill floor, a cantilever beam, a vibrating screen room and the like containing main drilling equipment are all positioned at the stern part of the platform, so that the docking station at the stern part of the platform is more convenient for the docking and construction operation of the platform, when the platform stern part is docked at the docking station, all blowout preventer assemblies can be assembled on the ground of the docking station, after the assembly is finished, the whole blowout preventer reaches 6 meters in height and the weight is nearly 70 tons, at the moment, the cantilever beam slides to the upper part of the docking station, a blowout preventer, the method is convenient for construction and debugging, saves a large amount of working hours, when equipment and systems of the whole ship of the self-elevating drilling platform are debugged respectively, a whole ship equipment joint debugging test is needed, so that main equipment of the whole ship can operate for a long time under a specific load to simulate the practical working condition of offshore operation to carry out a durability test, after a top drive is connected with three drill collars and one propeller, the top is lowered to drive the propeller to be completely immersed in the sea, and then the durability test is carried out, because the stern of the platform is close to a berth wharf, a cantilever beam is positioned above the wharf after sliding, the propeller cannot be lowered into the sea by the top drive, the platform is generally required to be pulled out to a floating state, the platform is moved to a proper water depth by a tug to insert piles, the platform is lifted to a proper air gap height and slides to a proper position, the top drive is connected with the three drill collars and is additionally provided with one propeller, the top drive is lowered to, the method comprises the steps of starting two or three high-pressure slurry pumps, establishing system pressure, pumping high-pressure seawater, spraying the high-pressure seawater into a high-pressure slurry system simulating the drilling operation working condition in the sea through a top drive and a drill collar, simultaneously rotating the top drive to drive a propeller to rotate in the sea, and using the torque of the top drive to overcome the resistance of the propeller to rotate in the sea.
Disclosure of Invention
The invention aims to provide a test method for performing a durability test on a self-elevating drilling platform by using a wharf water tank.
The technical scheme adopted by the invention for realizing the purpose is as follows: a test method for carrying out endurance test on a self-elevating drilling platform by using a wharf water tank comprises the following steps:
A. a hole is formed in the upper surface of the wharf water tank, and a propeller guide frame for vertically guiding and centering a propeller is arranged above the hole;
B. an opening for seawater overflow is formed in the position, close to the sea, of the wharf water tank, and high-pressure seawater sprayed out of a pressure regulating plug at the bottom of a propeller enters the water tank, and then flows into a sea area below the wharf through an overflow hose to an overflow hole;
C. sealing the bottom of the wharf water tank and the wharf ground, and injecting a proper amount of seawater into the wharf water tank after the preparation work of the wharf water tank is completed;
D. the method comprises the steps of lifting a platform to a proper air gap height to meet the requirement of top drive, enabling a drill collar and a propeller to be connected and then to be placed at a proper height in a wharf water tank, sliding a cantilever beam to be right above the wharf water tank to enable the propeller to be aligned with the wharf water tank, enabling the propeller to be completely immersed in seawater in the wharf water tank through a descending top, installing a propeller guide frame and guaranteeing a proper gap between the guide frame and a propeller rotating shaft, starting a high-pressure slurry pump to establish system pressure required by a test, enabling the rotary top drive to drive the propeller to rotate in the wharf water tank, observing the vibration state of the wharf water tank and controlling the top drive to be in a.
And in the step A, the diameter of the opening of the wharf water tank is 3 meters.
And in the step B, two holes are formed at the higher position of the sea side of the wharf water tank for seawater overflow.
The invention relates to a test method for carrying out endurance test on a self-elevating drilling platform by using a wharf water tank, which enables the self-elevating drilling platform built in the future to complete the whole endurance test at the wharf without being transferred to the sea, thereby saving a large amount of cost and working hours.
Drawings
Fig. 1 is a schematic diagram of a test method for endurance testing of a jack-up rig using a wharf water tank according to the present invention.
In the figure: 1. a wharf water tank; 2. a propeller guide frame; 3. an overflow hose; 4. a propeller; 5. a drill collar; 6. top drive; 7. a slurry pump; 8. a cantilever beam; .
Detailed Description
As shown in fig. 1, the method for testing the durability of the jack-up rig by using the wharf water tank has a water tank volume of about 270 cubic meters, and comprises the following specific steps: A. the upper surface of the wharf water tank 1 is provided with a hole, the diameter of the hole is 3 meters, so that a propeller 4 can be conveniently placed, and a propeller guide frame 2 is arranged above the hole and used for vertically guiding and centering the propeller, so that the propeller is prevented from being excessively eccentric in the rotating process; B. two positions (DN 50) are opened at the higher position of the sea side of the wharf water tank 1 and are used for seawater overflow, high-pressure seawater jetted from a pressure regulating plug at the bottom of a propeller enters the wharf water tank in the test process, the high-position overflow hole passes through an overflow hose 3 and enters the sea area under the wharf, and the seawater overflows all the time in the test process; C. the bottom of the wharf water tank needs to be sealed with the wharf ground, so that the water tank is prevented from shaking caused by high-pressure water flow injection in the test process; after the preparation work of the wharf water tank is completely finished, injecting a proper amount of seawater into the wharf water tank; D. lifting the platform to a proper air gap height to meet the requirement that a top drive 6, a drill collar 5 and a propeller 4 are connected and then put down to a proper height in a wharf water tank, sliding a cantilever beam 8 to be right above the wharf water tank to align the propeller with the wharf water tank, lowering the top to drive the propeller to be completely immersed in seawater in the wharf water tank, installing a propeller guide frame and ensuring a proper gap between the guide frame and a propeller rotating shaft, starting a high-pressure slurry pump 7 to establish system pressure required by a test, rotating the top drive 6 to drive the propeller to rotate in the wharf water tank, observing the vibration state of the wharf water tank and controlling the top drive to be in a reasonable rotating speed interval to ensure that a durability test is stably carried out, wherein the self-elevating drilling platform adopts the wharf water tank to carry out a durability test method, so that the self-elevating drilling platform built in the future does not need to be transferred to, the whole endurance test can be completed at the wharf, a large amount of cost and working hours can be saved, the test method can be used for reference of other self-elevating drilling platform builders at home and abroad, and the method has great significance for shortening the building debugging cost and period of the whole ship.
Claims (3)
1. A test method for carrying out endurance test on a self-elevating drilling platform by using a wharf water tank is characterized by comprising the following steps:
A. a hole is formed in the upper surface of the wharf water tank, and a propeller guide frame for vertically guiding and centering a propeller is arranged above the hole;
B. an opening for seawater overflow is formed in the position, close to the sea, of the wharf water tank, and high-pressure seawater sprayed out of a pressure regulating plug at the bottom of a propeller enters the water tank, and then flows into a sea area below the wharf through an overflow hose to an overflow hole;
C. sealing the bottom of the wharf water tank and the wharf ground, and injecting a proper amount of seawater into the wharf water tank after the preparation work of the wharf water tank is completed;
D. the method comprises the steps of lifting a platform to a proper air gap height to meet the requirement of top drive, enabling a drill collar and a propeller to be connected and then to be placed at a proper height in a wharf water tank, sliding a cantilever beam to be right above the wharf water tank to enable the propeller to be aligned with the wharf water tank, enabling the propeller to be completely immersed in seawater in the wharf water tank through a descending top, installing a propeller guide frame and guaranteeing a proper gap between the guide frame and a propeller rotating shaft, starting a high-pressure slurry pump to establish system pressure required by a test, enabling the rotary top drive to drive the propeller to rotate in the wharf water tank, observing the vibration state of the wharf water tank and controlling the top drive to be in a.
2. The method of claim 1, wherein the method comprises the following steps: and in the step A, the diameter of the opening of the wharf water tank is 3 meters.
3. The method of claim 1, wherein the method comprises the following steps: and in the step B, two holes are formed at the higher position of the sea side of the wharf water tank for seawater overflow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592558.8A CN109738215B (en) | 2018-12-20 | 2018-12-20 | Test method for endurance test of self-elevating drilling platform by applying wharf water tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811592558.8A CN109738215B (en) | 2018-12-20 | 2018-12-20 | Test method for endurance test of self-elevating drilling platform by applying wharf water tank |
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| CN109738215B true CN109738215B (en) | 2020-09-15 |
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| CN110145256B (en) * | 2019-05-16 | 2020-10-09 | 上海外高桥造船有限公司 | Drill collar device for simulating load test of top drive system |
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| CN107323633A (en) * | 2017-05-26 | 2017-11-07 | 广州中船文冲船坞有限公司 | Self-elevating drilling platform lies up and its undocked method |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9783947B2 (en) * | 2015-12-27 | 2017-10-10 | William Wei Lee | Submerged oil storage, loading and offloading system |
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| CN105628363A (en) * | 2016-01-08 | 2016-06-01 | 招商局重工（江苏）有限公司 | Load test method used for self-lifting drilling platforms cantilever beam |
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| CN108313238A (en) * | 2017-01-16 | 2018-07-24 | 烟台中集来福士海洋工程有限公司 | Jack up sea tooling is for launching method and its sewerage |
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