A riser tensioner and method of testing a guide wheel load

Abstract

The application discloses a riser tensioner and guide wheel load test method, comprising the following steps: obtaining the load test program requirements of the riser tensioner and guide wheel, configuring the corresponding test load assembly according to the load test program requirements, and transporting the test load assembly to the lower part of the well center of the drilling platform through the transportation equipment to perform the corresponding load test; the gravity of the test load assembly is greater than the test load of the riser tensioner and guide wheel in the corresponding load test; the two sides of the test load assembly are connected with the riser tensioners and guide wheels on different sides through force transmission links to form the force applying structure arranged in a staggered mode with the riser tensioners and guide wheels on the two sides; the test load is determined through the force transmission link, and all load tests are sequentially performed from the minimum test load according to the load test program requirements; the load tests of the remaining riser tensioners and guide wheels are sequentially completed. The application solves the problem of low efficiency in the traditional method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of riser tensioner and guide wheel load test, in particular to a riser tensioner and guide wheel load test method. BACKGROUND

[0002] In offshore drilling operations, the structural design and equipment arrangement of the drilling platform are crucial to ensuring the safety and efficiency of the operation. As a key operation area, the moon pool area under the drilling platform has a higher spatial layout characteristic, with a distance of about 10.7 meters from the main deck and a distance of about 26.3 meters from the baseline. The lower surface of the drilling platform is equipped with 12 guide wheels for guiding the operation of the riser system, and the left and right sides of the drilling platform are each equipped with 6 riser tensioners, a total of 12 riser tensioners, for maintaining the stable tension of the riser system.

[0003] During the load test, it is usually necessary to apply simulated loads to these guide wheels and riser tensioners to verify their load-carrying capacity and working performance. However, due to the large opening of the moon pool area below the guide wheels, it is difficult to place the load test equipment directly below the well center of the drilling platform, thereby posing a great challenge to the arrangement of the load test. In addition, according to the test procedure requirements, multiple different load tests need to be performed on the 12 guide wheels and riser tensioners, which is a heavy workload and complex operation. The traditional test method not only has low efficiency, but also has great safety hazards. SUMMARY

[0004] The technical problem to be solved by the present application is that the traditional load test method not only has low efficiency, but also has great safety hazards.

[0005] To solve the above technical problems, the present application provides a riser tensioner and guide wheel load test method, comprising the following steps:

[0006] Obtain the load test procedure requirements of the riser tensioner and guide wheel, configure the corresponding test load assembly according to the load test procedure requirements, and transport the test load assembly to the lower surface of the well center of the drilling platform for corresponding load test by using the transportation equipment; wherein the gravity of the test load assembly is greater than the test load of the riser tensioner and the guide wheel in the corresponding load test;

[0007] The two sides of the test load assembly are respectively connected to the riser tensioner and the guide wheel on different sides through force transmission links, so as to form a force applying structure with the riser tensioner and the guide wheel on both sides in a staggered arrangement;

[0008] Determine the test load through the force transmission link, and perform all load tests in sequence from the minimum test load according to the load test procedure requirements;

[0009] The load test of the rest of the riser tensioner and the guide wheel is sequentially completed.

[0010] Further, the gravity of the test load assembly is 1.2 times of the test load of the riser tensioner and the guide wheel in the corresponding load test.

[0011] Further, the force transmission link is connected to the riser tensioner and the guide wheel on different sides of the test load assembly to form a force applying structure arranged in a staggered manner.

[0012] The first steel wire rope is arranged on the first side of the test load assembly, and a first shackle, a first load cell and a second shackle are sequentially connected in series, and the first steel wire rope is connected to the mounting node of the riser tensioner and the guide wheel on the side to form a first force transmission link.

[0013] The second steel wire rope is symmetrically arranged on the second side of the test load assembly, and a third shackle, a second load cell and a fourth shackle are sequentially connected in series, and the second steel wire rope is connected to the mounting node of the riser tensioner and the guide wheel on the side to form a second force transmission link.

[0014] The force transmission link and the second force transmission link form a force applying structure arranged in a staggered manner.

[0015] Further, the first load cell and the second load cell both have a telemetry function to externally connect a remote control center through Bluetooth, WiFi or infrared.

[0016] Further, after the force applying structure arranged in a staggered manner is formed by connecting the force transmission link to the riser tensioner and the guide wheel on different sides of the test load assembly, it further includes:

[0017] The test load assembly includes a load test tool and a counterweight press, and the weight of the corresponding counterweight press is adjusted according to the load test procedure requirements to apply corresponding load to the riser tensioner and the guide wheel.

[0018] Further, the test load is determined by the force transmission link, and all load tests are sequentially performed from the minimum test load according to the load test procedure requirements.

[0019] The load value of the test load assembly applied to the riser tensioner and the guide wheel is determined by the first load cell and the second load cell.

[0020] From the minimum test load value, the test load is sequentially increased according to a predetermined loading gradient until all load required tests are completed, each loading stage is maintained for a set duration and response data is collected.

[0021] Further, from the minimum test load value, the test load is sequentially increased according to a predetermined loading gradient until all load required tests are completed, each loading stage is maintained for a set duration and response data is collected, including:

[0022] The loading gradient is 10%, 50%, 80% and 100% of the maximum load bearing capacity of the riser tensioner and the guide wheel, and the test load assembly sequentially applies corresponding load to each group of the riser tensioner and the guide wheel according to the gradient;

[0023] Each loading stage is maintained for a set duration and response data is collected.

[0024] Further, when the load test of the maximum load value of the riser tensioner and the guide wheel is completed, a verification step of unloading to zero load is further included.

[0025] Further, each group of riser tensioner and guide wheel includes at least one complete load test.

[0026] Further, the test load assembly is located directly below the well center of the drilling platform.

[0027] Compared with the prior art, the riser tensioner and guide wheel load test method provided by the embodiment of the present application has the beneficial effects that:

[0028] The embodiment of the present application replaces the test load assembly of different weights by the transportation equipment, so that all load tests of a group of riser tensioners and guide wheels can be completed only by one-time connection, and the same is applied to the completion of the test of all equipment, thereby improving the work efficiency. Since the number of repeated operations is reduced, the safety hazards caused by repeated installation and disassembly are also reduced, the operation process is simplified, the test efficiency is improved, the safety is enhanced, and the problems of low efficiency and safety hazards in the traditional test method are solved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a flowchart of the riser tensioner and guide wheel load test method provided by the embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the first angle of the implementation state of the riser tensioner and guide wheel load test method provided by the embodiment of the present application;

[0031] Figure 3This is a schematic diagram from a second angle illustrating the implementation state of the load test method for the water-tightening device and guide wheel provided in the embodiment of the present invention;

[0032] Figure 4 This is provided by the embodiments of the present invention. Figure 2 A magnified view of part A circled in the diagram;

[0033] In the diagram, 1. Tunnel tensioner; 2. Guide wheel; 3. Test load assembly; 31. Load test fixture; 32. Counterweight; 4. Transport equipment; 5. Force transmission link; 51. First force transmission link; 511. First wire rope; 512. First shackle; 513. First dynamometer; 514. Second shackle; 52. Second force transmission link; 521. Second wire rope. Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] like Figures 1 to 4 As shown, the present invention provides a load test method for a riser tensioner and guide wheel, comprising the following steps:

[0036] S110. Obtain the load test procedure requirements for riser tensioner 1 and guide wheel 2, configure the corresponding test load assembly 3 according to the load test procedure requirements, and transport the test load assembly 3 to the bottom of the drilling platform well core through the transport equipment 4 for the corresponding load test; wherein, the weight of the test load assembly 3 is greater than the test load of riser tensioner 1 and guide wheel 2 in the corresponding load test.

[0037] It should be noted that the gravity of the test load component 3 in this step will be applied to the riser tensioner 1 and guide wheel 2 during the test. The test load of the riser tensioner 1 and guide wheel 2 in the corresponding load test refers to the load limit that the riser tensioner 1 and guide wheel 2 can withstand in each load test of the same set of load tests, according to the design specifications or technical standards required by the load test procedure of the riser tensioner 1 and guide wheel 2.

[0038] This step ensures safety by limiting the weight of the test load assembly 3 to be greater than the test load of the water pipe tensioner 1 and guide wheel 2 in the corresponding load test, thus preventing instability during the test.

[0039] S120. Connect the two sides of the test load assembly 3 to the water-proof pipe tensioner 1 and guide wheel 2 on different sides through the force transmission link 5, so as to form a staggered force application structure with the water-proof pipe tensioner 1 and guide wheel 2 on both sides.

[0040] The force transmission link 5 is used to connect the misaligned force applying structure in this step, which helps to uniformly distribute the load applied by the test load assembly 3 on the corresponding riser tensioner 1 and guide wheel 2, ensures that all related parts can be fully tested, reduces the risk of single-point overload, optimizes load distribution, so that each tested part can be tested under more actual working conditions, and improves the authenticity and effectiveness of the test.

[0041] S130, determine the test load through the force transmission link 5, and sequentially perform all load tests starting from the minimum test load according to the load test program requirements.

[0042] In this step, the test load value applied to the riser tensioner 1 and the guide wheel 2 is determined by the force transmission link 5, and the load is gradually increased in order from small to large to perform all predetermined load tests, which can gradually verify the performance of the equipment under different loads, ensure that the equipment will not be damaged or cause safety accidents due to sudden application of excessive load, and perform tests in a gradual manner, which not only ensures the effectiveness of the test, but also reduces the risk caused by sudden load changes.

[0043] Understandably, in this step, the load test of different load requirements is performed by configuring the corresponding test load assembly 3, and the test load assembly 3 of different weights is replaced by the transportation equipment 4, which avoids the situation that the traditional weight tool cannot be directly placed under the well center of the drilling platform.

[0044] S140, sequentially complete the load test of the remaining riser tensioners 1 and guide wheels 2.

[0045] By using the above method, the test load assembly 3 of different weights is replaced by the transportation equipment 4, so that all load tests of a group of riser tensioners 1 and guide wheels 2 can be completed by connecting only once, and the same is true for the rest of the equipment until the test is completed, which improves the work efficiency. Since the number of repeated operations is reduced, the safety hazards caused by multiple installations and dismountings are also reduced, the operation process is simplified, the test efficiency is improved, the safety is enhanced, and the problems of low efficiency and safety hazards in the traditional test method are solved.

[0046] It should be noted that the connection between the test load assembly 3 and the riser tensioner 1 and the guide wheel 2 in the embodiment is detachable, so that after the load test of a group of riser tensioners 1 and guide wheels 2 is completed, the next group of riser tensioners 1 and guide wheels 2 can be directly replaced for testing. The transportation equipment 4 in the embodiment is a BOP platform.

[0047] Further, the gravity of the test load assembly 3 is 1.2 times of the test load of the riser tensioner 1 and the guide wheel 2 in the corresponding load test. By limiting the gravity of the test load assembly 3, the embodiment can avoid unstable conditions in the test process, thereby ensuring safety.

[0048] Further, the force transmission link 5 of the embodiment includes a first force transmission link 51 and a second force transmission link 52. Specifically, the two sides of the test load assembly 3 are respectively connected to the riser tensioner 1 and the guide wheel 2 on different sides through the force transmission link 5 to form a staggered arrangement of force applying structures with the riser tensioner 1 and the guide wheel 2 on the two sides, which includes:

[0049] S121, a first steel wire rope 511 is arranged on the first side of the test load assembly 3, and a first shackle 512, a first load cell 513, and a second shackle 514 are sequentially connected in series, and the first steel wire rope 511 is obliquely extended and connected to the mounting nodes of the riser tensioner 1 and the guide wheel 2 on the side to form the first force transmission link 51;

[0050] The embodiment arranges the first force transmission link 51 on the first side of the test load assembly 3 to ensure that the load applied from the test load assembly 3 can be effectively transmitted to the riser tensioner 1 and the guide wheel 2 through the first steel wire rope 511, and the size of the applied load can be monitored in real time through the first load cell 513 to ensure the accuracy of the load applied by the test load assembly 3 during the test. In addition, by using the first shackle 512 and the second shackle 514 as connecting pieces, adjustment and maintenance are facilitated, and the safety of the entire system is improved.

[0051] S122, a second steel wire rope 521 is symmetrically arranged on the second side of the test load assembly 3, and a third shackle, a second load cell, and a fourth shackle are sequentially connected in series, and the second steel wire rope 521 is obliquely extended and connected to the mounting nodes of the riser tensioner 1 and the guide wheel 2 on the side to form the second force transmission link 52;

[0052] By symmetrically arranging the second force transmission link 52 on the second side of the test load assembly 3, the riser tensioner 1 and the guide wheel 2 on the two sides can evenly share the load applied by the test load assembly 3, avoiding unilateral overload, and at the same time, the second load cell can independently monitor the load condition on the other side to provide more comprehensive data support, which is helpful for analyzing the overall performance of the equipment. The embodiment enhances the stability of the overall structure by symmetric arrangement, reducing the risk of system deviation or inclination caused by asymmetric loading.

[0053] S123, a staggered arrangement of force applying structures is formed through the first force transmission link 51 and the second force transmission link 52.

[0054] The staggered arrangement better simulates the complex stress state that the riser tensioner 1 and the guide wheel 2 may encounter under real operating conditions, improves the authenticity and reliability of the test results, and at the same time helps to optimize the distribution of loads in the entire structure, reduce local stress concentration phenomena, and protect key components from excessive wear or damage.

[0055] Further, the first load cell 513 and the second load cell both have a telemetry function to externally connect a remote control center through Bluetooth, WiFi or infrared.

[0056] The first load cell 513 and the second load cell of the embodiment can make the operator monitor the load condition on each load cell in real time at the remote control center through their telemetry function, so as to timely discover any abnormal condition (such as overload) and immediately take measures to adjust, avoiding potential risks. In addition, during the test process, the operator does not need to work directly near the load cell, but can remotely control and monitor the test process through the remote control center, increasing the safety and flexibility of operation.

[0057] Specifically, the first load cell 513 and the second load cell of the embodiment support multiple wireless communication modes such as Bluetooth, WiFi or infrared, and the most suitable connection mode can be selected according to the actual situation, enhancing the adaptability and compatibility of the system and ensuring stable and reliable data transmission in different environments. For example, Bluetooth or infrared may be preferred in an environment with a large amount of electromagnetic interference, and WiFi may be selected in a case where a larger coverage range is required.

[0058] Further, the two sides of the test load assembly 3 are connected to the riser tensioners 1 and the guide wheels 2 on different sides through force transmission links 5, respectively, to form a staggered arrangement of force application structures with the riser tensioners 1 and the guide wheels 2 on both sides, including:

[0059] The test load assembly 3 includes a load test tool 31 and counterweight weights 32, and the weight of the corresponding counterweight weight 32 is adjusted according to the load test program requirements to apply a corresponding load to the riser tensioner 1 and the guide wheel 2.

[0060] The load test tool 31 of the embodiment is a device for simulating the force applied to the riser tensioner 1 and the guide wheel 2 in the actual working environment, and the counterweight weight 32 is a component for adjusting the total weight of the test load assembly 3. By changing the counterweight according to specific test requirements, different load conditions can be simulated to apply specific and controllable loads to the riser tensioner 1 and the guide wheel 2, ensuring that the test can be carried out under a series of preset conditions and the response data of the riser tensioner 1 and the guide wheel 2 under different working intensities can be collected to verify their performance and reliability under different load conditions.

[0061] Further, the test load requirements are determined through the force transmission link 5, and all load tests are sequentially performed starting from the minimum test load according to the load test procedure requirements, including:

[0062] S131, the load values of the test load assembly 3 applied to the riser tensioner 1 and the guide wheel 2 are determined by the first load cell 513 and the second load cell;

[0063] This step uses the first load cell 513 and the second load cell to monitor and record the load values of the riser tensioner 1 in different operating states in real time, ensuring that the test load assembly 3 operates according to the predetermined program requirements, thereby simulating the load conditions under actual working conditions.

[0064] S132, starting from the minimum test load value, the test load is sequentially increased according to the predetermined loading gradient until all load tests are completed, and each loading stage is maintained for a set duration and response data is collected.

[0065] This step gradually tests the performance of the riser tensioner 1 under different stress levels by increasing the load from small to large, which helps to find potential problems or weaknesses. At the same time, a specific duration is set for each loading stage to ensure that the equipment can operate stably at each load level for a long enough time, further verifying its reliability and durability. Response data (such as deformation, temperature change, etc.) is collected systematically throughout the test process, providing a basis for subsequent analysis and helping to evaluate the true performance and safety of the equipment.

[0066] The two steps of the embodiment are combined, which not only ensures the comprehensiveness and accuracy of the load test, but also effectively avoids safety hazards caused by sudden application of high load by gradually increasing the load.

[0067] Further, starting from the minimum test load value, the test load is sequentially increased according to the predetermined loading gradient until all load tests are completed, and each loading stage is maintained for a set duration and response data is collected, including:

[0068] S1321, the loading gradient is 10%, 50%, 80%, and 100% of the maximum load that the riser tensioner 1 and the guide wheel 2 can withstand, and the test load assembly 3 sequentially applies corresponding load to each group of riser tensioner 1 and guide wheel 2 according to the gradient;

[0069] The step can effectively evaluate the performance of the riser tensioner 1 and the guide wheel 2 under different stress levels by gradually increasing the load from small to large load gradient, and ensure that it can operate stably under various working conditions. The lower load stage can help identify whether the device has design or manufacturing defects, and the high load stage is used to verify whether the device can withstand extreme conditions. The gradual increase in load helps to avoid safety hazards caused by sudden application of high load.

[0070] S1322, maintain the set duration of each loading stage and collect response data.

[0071] The step maintains a certain time to allow the riser tensioner 1 to stabilize at each load level, ensuring the accuracy of the test results, and by collecting response data at each stage, the specific performance of the riser tensioner 1 and the guide wheel 2 under different load conditions can be understood in detail, providing a scientific basis for subsequent performance evaluation and possible improvements.

[0072] The combination of the two steps of the embodiment not only ensures a comprehensive and accurate load test of the riser tensioner 1 and the guide wheel 2, but also improves the safety and effectiveness of the test by gradually increasing the load.

[0073] Further, after completing the load test of the maximum load value of the riser tensioner 1 and the guide wheel 2, a verification step of unloading to zero load is also included.

[0074] After applying the maximum load value that the riser tensioner 1 and the guide wheel 2 can withstand and ensuring that they can work normally under extreme conditions for a period of time, the embodiment gradually reduces the load until it is completely unloaded (i.e. zero load), observes and records the state change of the riser tensioner 1 and the guide wheel 2 from maximum load to zero load, and determines whether it can recover to the initial state or close to the initial state. The ability to evaluate the elastic recovery ability of the material and structure design. If it has good rebound performance, it means that it can maintain stable performance in the process of repeated loading and unloading. If permanent deformation or other abnormal conditions are found during unloading, it may indicate design defects, material damage or manufacturing problems, to help operators take corrective measures to avoid more serious failures or accidents later.

[0075] Further, each group of riser tensioner 1 and guide wheel 2 includes at least one complete load test.

[0076] The embodiment can comprehensively evaluate the performance of each group of riser tensioner 1 and guide wheel 2 in the entire working range by performing a complete load test, and ensure that the riser tensioner 1 and guide wheel 2 can not only work normally under the designed maximum load, but also stably run under various intermediate load conditions, thereby verifying the reliability and durability of the riser tensioner 1 and guide wheel 2. If multiple complete load tests are performed, the service life can be roughly analyzed according to the experimental data.

[0077] In actual operation, the load borne by the riser tensioner 1 and guide wheel 2 is usually applied along the center line direction of the wellbore, and the test load assembly 3 of the embodiment is located directly below the well center of the drilling platform, which can more realistically simulate the load condition under the actual working environment, so that the evaluation result is closer to the actual situation, and a reliable basis is provided for accurate evaluation of the performance of the equipment.

[0078] In summary, the embodiment of the present application provides a riser tensioner and guide wheel load test method, which replaces the test load assembly 3 of different weights by the transport equipment 4, so that all load tests of a group of riser tensioner 1 and guide wheel 2 can be completed only once by connecting, and the same is true for the subsequent tests until the test of all equipment is completed, thereby improving the work efficiency. Since the number of repeated operations is reduced, the safety hazards caused by multiple installation and disassembly are also reduced, the operation process is simplified, the test efficiency is improved, the safety is enhanced, and the problems of low efficiency and safety hazards in the traditional test method are solved.

[0079] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A method for load testing of a water-tightening pipe tensioner and guide wheel, characterized in that, Includes the following steps: Obtain the load test procedure requirements for the riser tensioner and guide wheel, configure the corresponding test load assembly according to the load test procedure requirements, and transport the test load assembly to the bottom of the well core of the drilling platform using transportation equipment for the corresponding load test; wherein, the weight of the test load assembly is greater than the test load of the riser tensioner and guide wheel in the corresponding load test; The two sides of the test load assembly are respectively connected to the riser tensioner and the guide wheel on different sides through force transmission links, so as to form a staggered force application structure with the riser tensioner and the guide wheel on both sides. The first steel wire rope is arranged on the first side of the test load assembly, and the first shackle, the first force gauge and the second shackle are connected in series in sequence. The first steel wire rope is extended obliquely to the installation node of the riser tensioner and the guide wheel on that side to form the first force transmission link. A second steel wire rope is symmetrically arranged on the second side of the test load assembly, and a third shackle, a second force gauge and a fourth shackle are connected in series in sequence. The second steel wire rope is extended obliquely to the mounting node of the water-tightening pipe tensioner and the guide wheel on this side to form a second force transmission link. A staggered force-applying structure is formed through the first force transmission link and the second force transmission link; The test load is determined through the force transmission link, and all load tests are performed sequentially starting from the minimum test load according to the load test procedure requirements; The load tests of the remaining water-tightening pipe tensioners and guide wheels are completed in sequence.

2. The load test method for the riser tensioner and guide wheel according to claim 1, characterized in that, The weight of the test load assembly is 1.2 times the test load of the riser tensioner and the guide wheel in the corresponding load test.

3. The load test method for the riser tensioner and guide wheel according to claim 1, characterized in that, Both the first force gauge and the second force gauge have remote measurement functions, which can be connected to a remote control center via Bluetooth, WiFi or infrared.

4. The load test method for the riser tensioner and guide wheel according to claim 1, characterized in that, The test load assembly is connected to the riser tensioners and guide wheels on different sides via force transmission links on both sides, forming a staggered force application structure with the riser tensioners and guide wheels on both sides, including: The test load assembly includes a load test fixture and a counterweight. The weight of the counterweight is adjusted according to the requirements of the load test procedure to apply a corresponding load to the water-tightening pipe tensioner and the guide wheel.

5. The load test method for the riser tensioner and guide wheel according to claim 3, characterized in that, The test load is determined through the force transmission link, and all load tests are performed sequentially from the minimum test load according to the load test procedure requirements, including: The load value applied by the test load assembly to the water-tightening pipe tensioner and guide wheel is determined by the first force gauge and the second force gauge; Starting from the minimum test load value, the test load is increased sequentially according to the predetermined loading gradient until all load requirements are met. Each loading phase is maintained for a set duration and response data is collected.

6. The load test method for the riser tensioner and guide wheel according to claim 5, characterized in that, Starting from the minimum test load value, the test load is increased sequentially according to a predetermined loading gradient until all load requirements are met. Each loading phase is maintained for a set duration, and response data is collected, including: The loading gradient is 10%, 50%, 80%, and 100% of the maximum load that the riser tensioner and the guide wheel can withstand, and the test load assembly applies the corresponding load to each set of the riser tensioner and the guide wheel in sequence according to this gradient. Each loading phase maintains a set duration and collects response data.

7. The load test method for the riser tensioner and guide wheel according to claim 6, characterized in that, After completing the load test of the maximum load value of the water-tightening pipe tensioner and the guide wheel, the process also includes a verification step of unloading to zero load.

8. The load test method for the riser tensioner and guide wheel according to any one of claims 1-7, characterized in that, Each set of riser tensioners and guide wheels includes at least one complete load test.

9. The load test method for the riser tensioner and guide wheel according to claim 1, characterized in that, The test load assembly is located directly below the well center of the drilling rig.

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