Simulation device special for laboratory test of deep sea drilling rig and test method

Abstract

The invention discloses a simulation device special for a deep sea drilling machine laboratory test and a test method. The simulation device is composed of a barrel, a flat cover, a shear resistant block, a drilling machine working platform, a temperature control system and a pressure loading system. And the cylinder, the flat cover and the anti-shearing block are matched and locked to form a deep sea drilling machine test space. The drilling machine working platform is used for deep sea mineral culture and deep sea drilling operation simulation and comprises a working platform and a mineral culture sub-cabin. The temperature control system and the pressure loading system cooperate with the pressure cylinder to form a deep sea temperature and pressure environment. The pressure cylinder flat cover is provided with a plurality of cable and signal cabin penetrating interfaces which are used for inputting a power source and a control signal when the deep sea drilling machine works, and drilling operation control is achieved. The device can provide deep-sea in-situ environment simulation for the deep-sea drilling machine, and complete-machine function and performance assessment of the deep-sea drilling machine is performed in a laboratory, so that technical risks of the deep-sea drilling machine are released, and research and development efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of deep sea simulation test devices, in particular to a simulation device and a test method specially used for deep sea drilling rig laboratory tests. Background Art

[0002] A deep-sea drilling rig is one that places the equipment on a drilling platform on the seabed, avoiding many risks and uncertainties of offshore drilling platforms.

[0003] The drilling depth of deep-sea drilling rigs can complete the exploration of mineral resources such as polymetallic sulfide ores, cobalt-rich crusts, deep-sea rare earths, and seabed natural gas hydrates. At present, the development of deep-sea drilling rigs in existing technologies is mainly based on offshore tests, which have certain risks, long test cycles, and high costs. Deep-sea pressure test equipment can only perform structural level pressure, strength, sealing and other capacity assessments, and does not have the functions of deep-sea temperature, salinity, and mineral mining simulation. It is difficult to complete the overall strength performance and function verification of deep-sea drilling rigs in the laboratory. Summary of the invention

[0004] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a simulation device and test method specifically for deep-sea drilling rig laboratory tests, thereby effectively solving the problem of insufficient deep-sea drilling rig laboratory test equipment and making it possible to carry out deep-sea drilling rig overall performance and function verification work in the laboratory.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A simulation device specially used for deep-sea drilling rig laboratory test, comprising a cylinder, wherein the main structure of the cylinder is a cylindrical structure, one end of the cylinder is designed with a full cross-section opening, and the other end is designed with a spherical head;

[0007] A flat cover and a locking block are installed on the top surface of the cylinder. The flat cover, the locking block and the inside of the cylinder form a test space. A plurality of cabin penetration interfaces are arranged on the flat cover, and cabin penetration cables pass through the cabin penetration interfaces.

[0008] An operating platform is arranged at the lower part of the cylinder, and a deep-sea drilling rig to be tested is installed on the upper surface of the operating platform, and the deep-sea drilling rig is connected with the penetrating cable;

[0009] An opening pipe is provided at the spherical head of the cylinder, flanges are installed at both ends of the opening pipe, and the mineral culture sub-cabin is installed at the flange through fasteners.

[0010] Its further technical solution is:

[0011] The mineral culture sub-cabin is locked with a flange through bolts and a sealing ring.

[0012] The mineral culture sub-cabin is locked with a flange through a clamp, a sealing ring and the flange.

[0013] The rock and soil are prefabricated in the mineral culture sub-cabin to simulate the drilling geological conditions.

[0014] The cylinder is provided with a temperature control system, which includes a pressure-resistant coil installed inside the cylinder and a heat preservation structure installed outside the cylinder. The pressure-resistant coil is connected to a chiller to cool the test medium and realize in-situ pressure environment simulation.

[0015] A loading and unloading interface is left at the bottom of the cylinder, which is connected to the pressure loading system. The test medium is injected into the cylinder through the pressure loading system to realize pressure loading, thereby realizing in-situ temperature environment simulation.

[0016] The pressure loading system uses a booster pump.

[0017] An operating method of a simulation device specially used for onshore testing of a deep-sea drilling rig includes the following operating procedures:

[0018] S1: Preparation;

[0019] Prepare a mineral culture sub-chamber and fill the mineral culture sub-chamber with rock and soil;

[0020] S2: Install the mineral culture sub-cabin;

[0021] Fix the mineral culture sub-chamber already filled with rock and soil on the flange;

[0022] S3: Install the deep sea drilling rig to be tested;

[0023] Lift the deep-sea drilling rig to be tested into the cylinder and fix it to the workbench;

[0024] S4: Install the flat cover;

[0025] Install the flat cover on the upper part of the cylinder and connect the through-cabin cable. At the same time, the locking device works to lock the locking block and the cylinder;

[0026] S5: boost work;

[0027] The booster pump injects seawater into the cylinder to increase the pressure and load the pressure;

[0028] S6: Simulate deep sea in situ temperature environment;

[0029] The heat exchange temperature of the seawater test medium inside the cylinder is adjusted through the pressure-resistant coil to reduce the seawater temperature inside the cylinder to the deep sea original temperature;

[0030] S7: Assessment work;

[0031] The deep-sea drilling rig is controlled by cables through the outside of the cylinder to simulate the drilling and mining of the rock and soil in the mineral culture sub-cabin. The mining operation of the deep-sea drilling rig is monitored by underwater lighting and camera systems, and the functions of the deep-sea drilling rig are evaluated.

[0032] The beneficial effects of the present invention are as follows:

[0033] The present invention has a compact and reasonable structure and is easy to operate. It is equipped with two major components: a deep-sea environment simulation main cabin and a mineral culture cabin. The main cabin is composed of a cylinder, a flat cover, a locking block, a sealing structure, a cabin penetration piece, a workbench, a skirt seat, and a mineral culture cabin installation interface. According to the use conditions, the mineral culture cabin can be installed inside the main cabin by bolts and flanges, or installed outside the main cabin by bolts, flanges or clamps, and the overall installation is flexible. Before the test, soil / mineral layers were prefabricated in the mineral culture chamber to simulate the geological conditions of mineral resources such as deep-sea polymetallic sulfide ores, cobalt-rich crusts, deep-sea rare earths, and seabed natural gas hydrates. During the test, the deep-sea drilling rig was placed in the deep-sea environment simulation main cabin and placed on the platform. Seawater was injected into the main cabin, and the main cabin was pressure-loaded by a pressure pump to simulate the seabed pressure. A heating / cooling device (pressure-resistant coil) was installed in the main cabin to heat / cool the seawater. Through the above means, the main cabin and the mineral culture chamber have the ability to simulate the in-situ pressure and temperature environment of the deep sea. Under the above-mentioned pressure and temperature seabed environment, the deep-sea drilling rig drilled the simulated geological conditions in the mineral culture chamber, thereby realizing the seabed drilling simulation of the deep-sea drilling rig in the laboratory and conducting comprehensive performance and function assessment of deep-sea operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention (Example 1).

[0035] Figure 2 It is a structural schematic diagram of the present invention (Example 2).

[0036] Figure 3 for Figure 1 Upper partial view of .

[0037] Figure 4 for Figure 1 Lower partial view of .

[0038] Figure 5 It is the layout diagram of the locking device of the present invention.

[0039] Among them: 1. Cylinder; 2. Locking block; 3. Locking device; 5. Flat cover; 6. Sealing structure; 7. Workbench; 8. Skirt; 9. Mineral culture sub-cabin; 10. Flange; 11. Clamp; 12. Pressure-resistant coil; 13. Insulation structure; 14. Booster pump; 15. Deep-sea drilling rig; 16. Cabin-penetrating cables. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0041] like Figure 1-Figure 5 As shown, the simulation device of this embodiment is specially used for deep-sea drilling rig laboratory test, including a cylinder 1, the main structure of the cylinder 1 is a cylindrical structure, one end of the cylinder 1 is a full-section opening design, and the other end is a spherical head design;

[0042] A flat cover 5 and a locking block 2 are installed on the top surface of the cylinder 1. The flat cover 5, the locking block 2 and the cylinder 1 form a test space. The flat cover 5 is provided with a plurality of cabin penetration interfaces, and the cabin penetration interfaces pass through the cabin penetration cables 16.

[0043] A workbench 7 is arranged at the lower part of the cylinder 1, and a deep-sea drilling rig 15 to be tested is installed on the upper surface of the workbench 7, and the deep-sea drilling rig 15 is connected to a penetrating cable 16;

[0044] An opening pipe is provided at the spherical end of the cylinder 1, flanges 10 are installed at both ends of the opening pipe, and the mineral culture sub-cabin 9 is installed at the flange 10 through fasteners.

[0045] The mineral culture sub-cabin 9 is locked with the flange 10 by means of bolts and a sealing ring.

[0046] The mineral culture sub-cabin 9 is locked by a clamp 11, a sealing ring and a flange 10.

[0047] The rock and soil are prefabricated in the mineral culture sub-cabin 9 to simulate the drilling geological conditions.

[0048] The cylinder 1 is provided with a temperature control system, which includes a pressure-resistant coil 12 installed inside the cylinder 1 and a heat-insulating structure 13 installed outside the cylinder 1. The pressure-resistant coil 12 is connected to a chiller to cool the test medium and realize in-situ pressure environment simulation.

[0049] A loading and unloading interface is provided at the bottom of the cylinder 1 and connected to a pressure loading system. The pressure loading system is used to inject a test medium into the cylinder 1 to achieve pressure loading, thereby achieving in-situ temperature environment simulation.

[0050] The pressure loading system adopts a booster pump 14 .

[0051] A locking device 3 is installed on the top surface of the flat cover 5 , and the output end of the locking device 3 corresponds to the locking block 2 .

[0052] There are several shear locking blocks 2, which form a whole ring in the circumferential direction.

[0053] The locking device 3 adopts a hydraulic cylinder system, and the hydraulic rod of the hydraulic cylinder system corresponds to the locking block 2.

[0054] A skirt seat 8 is fixed at the lower position outside the cylinder body 1 .

[0055] The bottom of the flat cover 5 matches the inner wall surface of the cylinder 1 through the sealing structure 6 .

[0056] The operation method of the simulation device dedicated to the onshore test of the deep-sea drilling rig in this embodiment includes the following operation process:

[0057] S1: Preparation;

[0058] Prepare the mineral culture sub-cabin 9, and put rock and soil into the mineral culture sub-cabin 9;

[0059] S2: Install the mineral culture sub-cabin 9;

[0060] Fix the mineral culture sub-cabin 9 already filled with rock and soil on the flange 10;

[0061] S3: Install the deep sea drilling rig 15 to be tested;

[0062] The deep-sea drilling rig 15 to be tested is hoisted into the cylinder 1 and fixed to the workbench 7;

[0063] S4: Install the flat cover 5;

[0064] The flat cover 5 is installed on the upper part of the cylinder 1, and the penetrating cable 16 is connected. At the same time, the locking device 3 works to lock the locking block 2 with the cylinder 1;

[0065] S5: boost work;

[0066] The booster pump 14 injects seawater into the cylinder 1 to pressurize it and perform pressure loading;

[0067] S6: Simulate deep sea in situ temperature environment;

[0068] The heat exchange temperature of the seawater test medium inside the cylinder 1 is adjusted by the pressure-resistant coil 12, and the seawater temperature inside the cylinder 1 is reduced to the deep sea original temperature;

[0069] S7: Assessment work;

[0070] The deep-sea drilling rig 15 is controlled by the through-cabin cable 16 outside the cylinder 1 to simulate the drilling and mining of the rock and soil in the mineral culture sub-cabin 9, and the mining operation of the deep-sea drilling rig 15 is monitored by the underwater lighting and camera system, and the function of the deep-sea drilling rig 15 is evaluated.

[0071] The specific structure and function of the simulation device specially used for onshore testing of deep-sea drilling rigs described in the present invention are as follows:

[0072] It mainly includes two major components: the deep-sea environment simulation main cabin and the mineral culture cabin 9.

[0073] The cylinder 1 comprises a cylindrical cylinder section, a spherical head, and a groove structure at the end of the cylinder, forming the main test space.

[0074] The locking block 2 is generally composed of several pieces, which can form a whole ring and fit tightly with the groove at the end of the cylinder.

[0075] The locking device 3 is composed of a hydraulic cylinder system, which can realize the disassembly and assembly of the locking block 2.

[0076] The flat cover 5 is provided with a plurality of through-cabin interfaces and a sealing structure 6. The flat cover 5 can form a test space with the cylinder 1 and be locked by a shear ring.

[0077] A workbench 7 is provided at the bottom of the cylinder 1 for installing the deep-sea drilling rig 15 to be tested.

[0078] The outer bottom of the cylinder body 1 is supported by a skirt 8 .

[0079] That is, the above components form the main cabin for simulating the deep sea environment.

[0080] The spherical end cap at the bottom of the cylinder 1 is provided with a large opening pipe, and flanges 10 are provided at both ends of the large opening pipe. The mineral culture sub-cabin 9 is locked with the flange 10 by bolts and a sealing ring, or the mineral culture sub-cabin 9 is locked with the flange 10 by a clamp 11 and a sealing ring.

[0081] Rock and soil can be prefabricated in the mineral culture sub-cabin 9 to simulate drilling geological conditions.

[0082] A pressure-resistant coil 12 is arranged on the inner side of the cylinder 1 of the deep-sea environment simulation main cabin, and the temperature inside the cabin can be adjusted by the heat medium in the pressure-resistant coil 12; an insulation structure 13 is arranged on the outer side of the cylinder 1 to maintain the stability of the temperature inside the cylinder; a loading and unloading interface is left at the bottom of the cylinder 1, and seawater or other test media can be injected into the cabin through a booster pump 14 to test the deep-sea depth environmental conditions.

[0083] A watertight penetration piece is installed at the penetration interface on the flat cover 5 to enable the penetration of the drilling rig power cable, signal line, etc., thereby realizing the control and data testing of the drilling rig outside the cabin.

[0084] In actual working process:

[0085] When conducting laboratory commissioning tests on the deep-sea drilling rig 15, first install the mineral culture sub-cabin 9 filled with rock and soil onto the flange 10 at the bottom of the cylinder 1, then hoist the deep-sea drilling rig 15 into the cylinder 1 and install it on the workbench 7, then install the flat cover 5, connect the through-cabin cable 16, and the locking device 3 pushes the locking block 2 into the groove at the end of the cylinder 1; the booster pump 14 injects seawater into the cabin for pressurization, and the pressure-resistant coil 12 regulates the temperature of the seawater test medium in the cabin, so that a deep-sea depth and temperature test environment is formed in the cabin. The deep-sea drilling rig 15 is controlled by the through-cabin cable 16 outside the cabin to simulate drilling and mining of the rock and soil in the mineral culture sub-cabin 9, and the drilling rig mining operation is detected by underwater lighting, camera system (not shown) and other equipment, and the function of the deep-sea drilling rig 15 is evaluated; in addition, the drilling rig structure system can be tested by strain gauges, displacement sensors and other equipment, and the structural strength and sealing can be evaluated.

[0086] The specific process is as follows:

[0087] (1) Prefabricate deep sea geological conditions in the mineral culture sub-chamber 9;

[0088] (ii) installing the mineral culture sub-cabin 9 onto the large-opening pipe of the cylinder 1, and according to the operating conditions, it can be locked with the flange 10 of the large-opening pipe by bolts, a sealing ring, or locked with the flange 10 by a clamp 11, a sealing ring, and a clamp 10;

[0089] (iii) hoisting the deep-sea drilling rig 15 into the cylinder 1 and installing it on the work platform 7;

[0090] (iv) Install the flat cover 5, install the observation equipment and its cabin penetration cables 16;

[0091] (V) The locking device 3 locks the locking block 2 and the cylinder 1 to form a high-pressure sealed space;

[0092] (vi) the booster pump 14 injects seawater into the cabin and pressurizes it to simulate the pressure environment of the seabed drilling location;

[0093] (VII) The pressure coil 12 regulates the temperature of the seawater test medium in the cabin to simulate the temperature environment of the drilling seabed location;

[0094] (VIII) issuing operation instructions to the deep-sea drilling rig 15 through the through-cabin cable 16 to simulate drilling and mining of the rock and soil in the mineral culture sub-cabin 9;

[0095] (IX) The drilling rig mining operation is detected by underwater lighting, camera system (not shown) and other equipment, and the function of the deep-sea drilling rig 15 is evaluated; in addition, the drilling rig structure system can be detected by strain gauges, displacement sensors and other equipment, and the structural strength and sealing can be evaluated.

[0096] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A simulation device specially used for deep-sea drilling rig laboratory tests, Features: It comprises a cylinder (1), the main structure of the cylinder (1) is a cylindrical structure, one end of the cylinder (1) is designed with a full cross-section opening, and the other end is designed with a spherical head; A flat cover (5) and a locking block (2) are installed on the top surface of the cylinder (1); the flat cover (5), the locking block (2) and the interior of the cylinder (1) form a test space; a plurality of cabin penetration interfaces are arranged on the flat cover (5), and cabin penetration cables (16) pass through the cabin penetration interfaces; An operating platform (7) is arranged at the lower part of the cylinder (1), a deep-sea drilling rig (15) to be tested is installed on the upper surface of the operating platform (7), and the deep-sea drilling rig (15) is connected to a penetrating cable (16); An opening pipe is provided at the spherical sealing head of the cylinder (1), flanges (10) are installed at both ends of the opening pipe, and a mineral culture sub-cabin (9) is installed at the flange (10) via fasteners.

2. A simulation device specially used for deep sea drilling rig laboratory test as claimed in claim 1, Features: The mineral culture sub-cabin (9) is locked with the flange (10) via bolts and a sealing ring.

3. A simulation device specially used for deep sea drilling rig laboratory test as claimed in claim 1, Features: The mineral culture sub-cabin (9) is locked by a clamp (11), a sealing ring and a flange (10).

4. A simulation device specially used for deep-sea drilling rig laboratory tests as described in any one of claims 1 to 3, Features: Rock and soil are prefabricated in the mineral culture sub-cabin (9) to simulate drilling geological conditions.

5. A simulation device specially used for deep sea drilling rig laboratory test as claimed in claim 1, Features: The cylinder (1) is provided with a temperature control system, wherein the temperature control system comprises a pressure-resistant coil (12) installed inside the cylinder (1), a heat-insulating structure (13) installed outside the cylinder (1), and the pressure-resistant coil (12) is connected to a chiller to cool the test medium and realize in-situ temperature environment simulation.

6. A simulation device specially used for deep sea drilling rig laboratory test as claimed in claim 1, Features: A loading and unloading interface is provided at the bottom of the cylinder (1) and is connected to a pressure loading system. The pressure loading system is used to inject a test medium into the cylinder (1) to achieve pressure loading, thereby achieving in-situ pressure environment simulation.

7. A simulation device specially used for deep sea drilling rig laboratory test as claimed in claim 6, Features: The pressure loading system adopts a booster pump (14).

8. A method for operating a simulation device specially used for onshore testing of deep-sea drilling rigs as claimed in claim 7, Features: The following operation procedures are included: S1: Preparation; Prepare a mineral culture sub-cabin (9), and fill the mineral culture sub-cabin (9) with rock and soil; S2: installing the mineral culture sub-cabin (9); Fixing the mineral culture sub-cabin (9) already filled with rock and soil on the flange (10); S3: Installing the deep sea drilling rig (15) to be tested; The deep-sea drilling rig (15) to be tested is hoisted into the cylinder (1) and fixed to the working platform (7); S4: Install the flat cover (5); A flat cover (5) is installed on the upper part of the cylinder (1), and a through-cabin cable (16) is connected. At the same time, the locking device (3) works to lock the locking block (2) and the cylinder (1); S5: boost work; The booster pump (14) injects seawater into the cylinder (1) to increase the pressure and perform pressure loading; S6: Simulate deep sea in situ temperature environment; The heat exchange temperature of the seawater test medium inside the cylinder (1) is adjusted by means of a pressure-resistant coil (12), so that the seawater temperature inside the cylinder (1) is reduced to the deep sea original temperature; S7: Assessment work; The deep-sea drilling rig (15) is controlled by a through-cabin cable (16) outside the cylinder (1) to simulate drilling and mining of the rock and soil in the mineral culture sub-cabin (9), and the mining operation of the deep-sea drilling rig (15) is monitored by an underwater lighting and camera system to assess the function of the deep-sea drilling rig (15).

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