Water drilling platform

Abstract

The invention discloses an overwater drilling platform and relates to the technical field of geological exploration. The problems that an existing water drilling facility is prone to fluctuating up and down and moving transversely due to the influence of water level changes, a casing pipe is damaged, and the testing result is affected are solved. The device comprises a floating platform and an operation platform, the operation platform can be installed on the top face of the floating platform in the mode of being capable of moving relatively in the transverse direction through a plurality of elastic mechanisms which are evenly distributed, the floating platform floats on the water surface, the floating platform and the operation platform can move relatively in the transverse direction, the floating platform only supports a limiting platform, and transverse movement of the floating platform does not affect the operation platform; when the floating platform fluctuates up and down, it can be ensured that the height position of the operating platform does not change under the action of the elastic piece, drilling can be achieved only by using the sleeve with the fixed length without increasing or decreasing the sleeve, the operation difficulty is greatly reduced, and the sleeve cannot be damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, and particularly relates to an offshore drilling platform. Background Art

[0002] With the development of geotechnical engineering exploration technology, drilling technology has emerged. Drilling is an engineering technology method for obtaining underground information, and is usually used to detect underground rock formation structures, groundwater, mineral resource reserves, geological structures and other information.

[0003] When conducting offshore drilling on small lakes and reservoirs, in order to ensure the smooth progress of geological exploration work, casings are usually used to isolate water flow and guide and position drilling tools. At the same time, the casings can also protect the boreholes and prevent formation collapse. The casings are connected to drilling facilities floating on the water surface, and the drilling facilities are usually set up separately.

[0004] However, the drilling facilities are affected by water level changes. When the water level rises, the drilling facilities move upward, causing the casings to move upward accordingly. When the water level drops, the drilling facilities move downward, causing the casings to be compressed. The traditional solution is to manually increase or decrease the length of the casings. However, during the process of increasing the casings, affected by the working environment, working conditions, wind and waves, etc., it is difficult to increase or decrease the casings, the operation time is relatively long, and the casings need to be frequently increased or decreased according to the water level changes, which affects the normal progress of drilling work. Moreover, the drilling facilities floating on the water surface and the casings are easily affected by wind and waves and move laterally, thereby causing damage to the casings.

[0005] In summary, the existing offshore drilling facilities are easily affected by water level changes and move up and down and laterally, and there are problems such as difficult increase or decrease of casings and easy damage to the casings. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems that the existing offshore drilling facilities are easily affected by water level changes and move up and down and laterally, and there are problems such as difficult increase or decrease of casings and easy damage to the casings. Furthermore, an offshore drilling platform is provided.

[0007] The technical solution of the present invention is: an offshore drilling platform, comprising: a floating platform and an operating platform. The operating platform is installed on the top surface of the floating platform through a plurality of uniformly distributed elastic mechanisms and can move relative to each other horizontally. A casing extending downward is connected to the operating platform, and the floating platform has an avoidance hole for passing through the casing;

[0008] The elastic mechanism includes a first sleeve and a second sleeve connected by insertion. The first sleeve is fixedly installed on the bottom surface of the operating platform, the second sleeve is slidably installed on the top surface of the floating platform, and an elastic member is arranged between the first sleeve and the second sleeve. The elastic member has an elastic force for driving the first sleeve and the second sleeve to move away from each other;

[0009] A plurality of winding rollers are rotatably connected to the operating table and are evenly distributed. The winding rollers are connected to the driving ends of driving members, and the driving members are used to drive the winding rollers to rotate. An anchor cable is wound around the winding rollers, and an anchor claw is connected to the end of the anchor cable.

[0010] A limiting rod that can move up and down is connected to the operating table, and the floating platform has a limiting groove that cooperates with the limiting rod.

[0011] Further, a main pipeline and branch pipelines communicating with the main pipeline are connected to the floating platform. The main pipeline is communicated with a high-pressure gas storage tank. There are a plurality of branch pipelines that are evenly distributed circumferentially. The air outlets of the branch pipelines are connected to air nozzles through valves.

[0012] Further, the valve is a solenoid valve, and a plurality of proximity sensors are connected to the inner wall of the avoidance hole and are evenly distributed circumferentially. The proximity sensors are electrically connected to the solenoid valve.

[0013] Further, the avoidance hole is a circular hole.

[0014] Further, balls are connected to the bottom of the second sleeve, and the balls are in rolling connection with the top surface of the floating platform.

[0015] Further, one end of the spring is connected to the inner top wall of the first sleeve, and the other end of the spring is connected to the inner bottom wall of the second sleeve.

[0016] Further, both the first sleeve and the second sleeve are rectangular tubes.

[0017] Further, an upwardly extending outer enclosure is connected to the edge position of the floating platform, and an upwardly extending inner enclosure is connected to the avoidance hole of the floating platform.

[0018] Further, the operating table has a threaded hole that penetrates up and down. The limiting rod includes a threaded rod and a smooth rod. The threaded rod is threadedly connected to the threaded hole, and the smooth rod is used to cooperate with the avoidance hole.

[0019] Further, there are at least two limiting rods that are symmetrically arranged.

[0020] The present invention has the following effects compared with the prior art:

[0021] 1. For the offshore drilling platform provided by the present invention, before drilling, the limiting rod is inserted into the limiting groove. After the floating platform and the operating platform are moved to the drilling position together, the limiting rod is separated from the limiting groove, and the operating platform is fixed by the anchor claws. At this time, the floating platform and the operating platform can move relatively horizontally. The floating platform only supports the limiting platform, and the horizontal movement of the floating platform will not affect the operating platform. When the floating platform rises and falls, under the action of the elastic member, it can ensure that the height position of the operating platform does not change, so there is no need to increase or decrease the casing. Only a casing with a fixed length is needed to realize drilling, which greatly reduces the operation difficulty and the casing will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the offshore drilling platform of the present invention;

[0023] Figure 2 is Figure 1 the front view of

[0024] Figure 3 is Figure 1 the schematic diagram of the other side;

[0025] Figure 4 is Figure 1 the explosion diagram of

[0026] Figure 5 is Figure 4 the schematic diagram of the other side;

[0027] Figure 6 is Figure 5 the cross-sectional view of the elastic mechanism in

[0028] Figure 7 is Figure 4 the enlarged view of area A in

[0029] In the figure: 1. Floating platform; 2. Operating platform; 3. Elastic mechanism; 4. Casing; 5. Avoidance hole; 6. First sleeve; 7. Second sleeve; 8. Elastic member; 9. Winding roller; 10. Driving member; 11. Anchor cable; 12. Anchor claw; 13. Limiting rod; 14. Limiting groove; 15. Main pipeline; 16. Branch pipeline; 17. High-pressure gas storage tank; 18. Valve; 19. Air nozzle; 20. Proximity sensor; 21. Ball; 22. Outer enclosure; 23. Inner enclosure; 24. Threaded hole; 25. Threaded rod; 26. Smooth rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Detailed Embodiment 1: In combination with Figure 1 , Figure 3 , Figure 5Description of this embodiment: This embodiment includes a floating platform 1 and an operating platform 2. The operating platform 2 is mounted on the top surface of the floating platform 1 in a laterally relatively movable manner through a plurality of elastic mechanisms 3 evenly distributed. The floating platform 1 floats on the water surface, and the operating platform 2 is located on the floating platform 1. The floating platform 1 provides a supporting force for the operating platform 2. A sleeve 4 extending downward is connected to the operating platform 2. The floating platform 1 has an avoidance hole 5 for passing through the sleeve 4. The elastic mechanism 3 includes a first sleeve 6 and a second sleeve 7 connected by insertion. The first sleeve 6 is fixedly installed on the bottom surface of the operating platform 2, and the second sleeve 7 is slidably installed on the top surface of the floating platform 1. An elastic member 8 is provided between the first sleeve 6 and the second sleeve 7. The elastic member 8 has an elastic force for driving the first sleeve 6 and the second sleeve 7 to move away from each other. A plurality of winding rollers 9 evenly distributed are rotatably connected to the operating platform 2. The winding rollers 9 are connected to the driving end of a driving member 10. The driving member 10 is used to drive the winding rollers 9 to rotate. A cable 11 is wound around the winding rollers 9. The end of the cable 11 is connected to an anchor claw 12. In this embodiment, the driving member 10 can be a motor. The motor is fixedly installed on the operating platform 2, and there is a certain distance between the motor and the water surface. During use, there is no need to take waterproof measures for the motor, the structure is simpler, and the manufacturing cost is lower. A limiting rod 13 that can move up and down is connected to the operating platform 2. The floating platform 1 has a limiting groove 14 that cooperates with the limiting rod 13. After the limiting rod 13 is inserted into the limiting groove 14, at this time, the floating platform 1 and the operating platform 2 are connected as a whole. After the limiting rod 13 is separated from the limiting groove 14, the floating platform 1 and the operating platform 2 are disconnected. The movement of the floating platform 1 will not affect the operating platform 2. The sleeve 4 can also play a role in limiting the floating platform 1 through the avoidance hole 5, preventing the floating platform 1 from moving laterally too far and separating from the operating platform 2. The number of cables 11 is four, and the four cables 11 can also limit the lateral movement distance of the floating platform 1.

[0031] For the offshore drilling platform of this embodiment, before drilling, insert the limiting rod 13 into the limiting groove 14. After the floating platform 1 and the operating platform 2 move to the drilling position together, separate the limiting rod 13 from the limiting groove 14, and fix the operating platform 2 through the anchor claw 12. At this time, the floating platform 1 and the operating platform 2 can move relatively laterally. The floating platform 1 only supports the limiting platform. When the water level changes, the lateral movement of the floating platform 1 will not affect the operating platform 2. When the floating platform 1 rises and falls, under the action of the elastic member 8, it can ensure that the height position of the operating platform 2 does not change, so there is no need to increase or decrease the sleeve 4. Just use a sleeve 4 with a fixed length to achieve drilling, which greatly reduces the operation difficulty, and the sleeve 4 will not be damaged.

[0032] Specific embodiment two: Combine Figure 2 、 Figure 4 、 Figure 7Describing this embodiment, the difference between this embodiment and the first specific embodiment is that a main pipeline 15 and branch pipelines 16 communicating with the main pipeline 15 are connected to the floating platform 1. The main pipeline 15 is communicated with a high-pressure gas storage tank 17, and the high-pressure gas storage tank 17 is also installed on the floating platform 1. There are multiple branch pipelines 16 evenly distributed along the circumferential direction. The air outlet of the branch pipeline 16 is connected to an air nozzle 19 through a valve 18. When the floating platform 1 moves horizontally, the valve 18 at the corresponding position can be opened at this time, so that the air nozzle 19 can eject air outward, and the floating platform 1 is pushed to the original position through the reaction force, avoiding the separation of the floating platform 1 and the operating platform 2. Since the floating platform 1 is movable, its area can be reduced, and the manufacturing cost is lower. Other compositions and connection relationships are the same as those in the first specific embodiment.

[0033] Specific embodiment three: Combining Figure 3 、 Figure 4 、 Figure 7 Describing this embodiment, the difference between this embodiment and the second specific embodiment is that the valve 18 is a solenoid valve, and a plurality of proximity sensors 20 evenly distributed along the circumferential direction are connected to the inner wall of the avoidance hole 5. The proximity sensors 20 are electrically connected to the solenoid valve. The proximity sensors 20 can automatically detect the positional relationship between the avoidance hole 5 and the sleeve 4. After the sleeve 4 approaches the proximity sensors 20, the proximity sensors 20 release an electrical signal to activate the solenoid valve at the corresponding position, thereby driving the floating platform 1 to move, and there is no need to manually control the floating platform 1 to reset, which is more convenient to use. Other compositions and connection relationships are the same as those in the second specific embodiment.

[0034] Specific embodiment four: Combining Figures 3 to 5 Describing this embodiment, the difference between this embodiment and the third specific embodiment is that the avoidance hole 5 is a circular hole, which has the same shape as the sleeve 4. When the avoidance hole 5 and the sleeve 4 are coaxial, it can be determined that the floating platform 1 has moved to the original position, and it is more convenient to confirm the original position of the floating platform 1. Other compositions and connection relationships are the same as those in the third specific embodiment.

[0035] Specific embodiment five: Combining Figure 5 、 Figure 6 Describing this embodiment, the difference between this embodiment and the first specific embodiment is that a ball 21 is connected to the bottom of the second sleeve 7, and the ball 21 is in rolling connection with the top surface of the floating platform 1. The ball 21 and the top surface of the floating platform 1 are in rolling contact, and the contact area between the two is smaller, so the friction force is also smaller. When the floating platform 1 moves horizontally, the acting force on the operating platform 2 is smaller, thereby improving the stability of the operating platform 2. Other compositions and connection relationships are the same as those in the first specific embodiment.

[0036] Specific embodiment six: Combining Figure 6To describe this embodiment, the difference between this embodiment and the first specific embodiment is that the elastic member 8 is a spring. One end of the spring is connected to the inner top wall of the first sleeve 6, and the other end of the spring is connected to the inner bottom wall of the second sleeve 7. The spring can provide a supporting force while deforming, so as to ensure that the operating platform 2 stays stably at the drilling position. When the floating platform 1 moves upward, the spring will be compressed, and the acting force generated by the spring is transmitted to the anchor claw 12 through the operating platform 2. Since the anchor claw 12 is fixed to the bottom of the water, the height of the operating platform 2 will not change. The other components and connection relationships are the same as those in the first specific embodiment.

[0037] Specific embodiment seven: In combination with Figure 5 To describe this embodiment, the difference between this embodiment and the first specific embodiment is that both the first sleeve 6 and the second sleeve 7 are rectangular tubes. When the rectangular tubes cooperate with each other, they can limit their own rotation, so that the second sleeve 7 can only move up and down, and the movement is more stable. The other components and connection relationships are the same as those in the first specific embodiment.

[0038] Specific embodiment eight: In combination with Figure 4 To describe this embodiment, the difference between this embodiment and the first specific embodiment is that an upwardly extending outer enclosure 22 is connected to the edge position of the floating platform 1, and an upwardly extending inner enclosure 23 is connected to the avoidance hole 5 of the floating platform 1. The outer enclosure 22 and the inner enclosure 23 jointly provide protection to prevent the floating platform 1 from moving horizontally over a long distance and causing the floating platform 1 to separate from the operating platform 2. The other components and connection relationships are the same as those in the first specific embodiment.

[0039] Specific embodiment nine: In combination with Figure 1 、 Figure 2 To describe this embodiment, the difference between this embodiment and the first specific embodiment is that the operating platform 2 has a threaded hole 24 that penetrates up and down. The limiting rod 13 includes a threaded rod 25 and a smooth rod 26. The threaded rod 25 is threadedly connected to the threaded hole 24, and the smooth rod 26 is used to cooperate with the avoidance hole 5. By rotating the threaded rod 25, the smooth rod 26 can be driven to move up and down, and then drive the smooth rod 26 to cooperate with the avoidance hole 5. The thread has self-locking property, which can make the smooth rod 26 stay stably at the corresponding position without using other tools for fixation, and the use is simpler. The other components and connection relationships are the same as any one of the first to eighth specific embodiments.

[0040] Specific embodiment ten: In combination with Figure 1 、 Figure 2 To describe this embodiment, the difference between this embodiment and the ninth specific embodiment is that there are at least two limiting rods 13 arranged symmetrically. In this embodiment, the number of limiting rods 13 is two. The more the number of limiting rods 13, the more fixing points there are, and the floating platform 1 and the operating platform 2 move more stably together. The other components and connection relationships are the same as those in the ninth specific embodiment.

[0041] Usage method of this embodiment:

[0042] In the initial state, the polished rod 26 is inserted into the limit groove 14. After driving the floating platform 1 and the operating platform 2 to move to the drilling position, rotate the threaded rod 25. The threaded rod 25 drives the polished rod 26 to separate from the limit groove 14. At this time, the floating platform 1 only plays a supporting role for the operating platform 2, and the lateral movement of the floating platform 1 will not affect the operating platform 2. When the floating platform 1 moves up and down, it will compress or stretch the spring. The force generated by the spring is transmitted to the anchor claw 12 through the operating platform 2. Since the anchor claw 12 is fixed to the bottom of the water, the height of the operating platform 2 will not change, and there is no need to manually add the casing 4, which greatly reduces the operation difficulty and avoids damage to the casing 4 at the same time.

[0043] When the floating platform 1 moves laterally by a certain distance, a proximity sensor 20 in the avoidance hole 5 will approach the casing 4, thereby releasing a signal to the solenoid valve at the corresponding position. The solenoid valve at this position will then open, and the air nozzle 19 sprays air outward, and the floating platform 1 is pushed back to the original position by the generated reaction force.

[0044] The content of the present invention is not limited to the content of the above embodiments. The combination of one or several specific embodiments can also achieve the purpose of the invention.

Claims

1. An above-water drilling platform, comprising: A floating platform (1) and an operating table (2), characterized in that the operating table (2) is mounted on the top surface of the floating platform (1) so as to be relatively movable in the lateral direction through a plurality of evenly distributed elastic mechanisms (3), a sleeve (4) extending downward is connected to the operating table (2), and the floating platform (1) has a position avoidance hole (5) for passing the sleeve (4); The elastic mechanism (3) comprises a first sleeve (6) and a second sleeve (7) which are plug-connected, the first sleeve (6) being fixedly mounted on the bottom surface of the operating table (2), the second sleeve (7) being slidably mounted on the top surface of the floating platform (1), an elastic member (8) being arranged between the first sleeve (6) and the second sleeve (7), the elastic member (8) having an elastic force for driving the first sleeve (6) and the second sleeve (7) to move away from each other; The operating table (2) is rotatably connected to a plurality of evenly distributed winding rollers (9), the winding rollers (9) are connected to the driving end of a driving member (10), the driving member (10) is used to drive the winding rollers (9) to rotate, an anchor cable (11) is wound around the winding rollers (9), and an anchor claw (12) is connected to the end of the anchor cable (11); The operating platform (2) is connected to a limit rod (13) which can move up and down, and the floating platform (1) has a limit groove (14) which matches the limit rod (13).

2. The above-water drilling platform according to claim 1, characterized in that: The floating platform (1) is connected to a main pipeline (15) and a branch pipeline (16) in communication with the main pipeline (15); the main pipeline (15) is in communication with a high-pressure gas storage tank (17); the branch pipeline (16) has a plurality of branch pipelines evenly distributed along the circumference; and the gas outlet of the branch pipeline (16) is connected to an air nozzle (19) via a valve (18).

3. The above-water drilling platform according to claim 2, characterized in that: The valve (18) is a solenoid valve, and a plurality of proximity sensors (20) evenly distributed along the circumferential direction are connected to the inner wall of the avoidance hole (5), and the proximity sensors (20) are electrically connected to the solenoid valve.

4. The above-water drilling platform according to claim 3, characterized in that: The avoidance hole (5) is a circular hole.

5. The above-water drilling platform according to claim 1, characterized in that: A ball (21) is connected to the bottom of the second sleeve (7), and the ball (21) is rollingly connected to the top surface of the floating platform (1).

6. The above-water drilling platform according to claim 1, characterized in that: The elastic member (8) is a spring, one end of which is connected to the inner top wall of the first sleeve (6), and the other end of which is connected to the inner bottom wall of the second sleeve (7).

7. The above-water drilling platform according to claim 1, characterized in that: The first sleeve (6) and the second sleeve (7) are both rectangular sleeves.

8. The above-water drilling platform according to claim 1, characterized in that: An outer peripheral stopper (22) extending upward is connected to the edge of the floating platform (1), and an inner peripheral stopper (23) extending upward is connected to the avoidance hole (5) of the floating platform (1).

9. An above-water drilling platform according to any one of claims 1 to 8, characterized in that: The operating table (2) has a threaded hole (24) penetrating from top to bottom, and the limiting rod (13) comprises a threaded rod (25) and a smooth rod (26), the threaded rod (25) is threadedly connected to the threaded hole (24), and the smooth rod (26) is used to cooperate with the avoidance hole (5).

10. The above-water drilling platform according to claim 9, characterized in that: The limiting rods (13) have at least two symmetrically arranged ones.

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