Petroleum drilling coring device

Abstract

The utility model relates to the technical field of coring devices, and discloses a petroleum drilling coring device which comprises a main body, a round hole is formed in the main body, a first supporting frame is fixedly connected to the top of the main body, a fixing frame is fixedly connected to the interior of the first supporting frame, a first air cylinder is fixedly connected to the interior of the fixing frame, and a second air cylinder is fixedly connected to the interior of the first air cylinder. A lifting block is fixedly connected to the output end of the first air cylinder, a transmission rod is slidably connected to the outer wall of the cylinder, a fixing rod is rotatably connected to the outer wall of the transmission rod, the top of the fixing rod is fixedly connected to the rotating block, a coring shell is fixedly connected to the bottom of the transmission rod, and a fixing assembly is arranged at the top of the main body. According to the petroleum drilling coring device, the effect that a core sample can be rapidly taken out from the coring shell is achieved, the problems that according to an existing petroleum drilling coring device, after a coring pipe is lifted to the ground from a drill hole, a rock core needs to be taken out from a pipeline manually, and coring is inconvenient are solved, and coring convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coring devices, in particular to a coring device for oil drilling. Background Art

[0002] In the field of oil exploration, drilling coring equipment plays a vital role. With the continuous growth of oil production and the gradual depletion of traditional reserves, the exploration and development of new oil resources has become increasingly urgent. The oil drilling coring equipment is a key geological exploration tool. Its main task is to obtain underground rock samples for geological analysis, exploration evaluation and reservoir reserve estimation, so as to formulate appropriate development strategies and drilling plans.

[0003] The main structures of the existing oil drilling coring device include a drill pipe, a coring tube and a corer. When coring, it is first connected to the corer through the drill pipe, and then the drill pipe rotates to drive the corer into the rock formation. During the drilling process, the cutting part of the corer will cut the rock, isolate and intercept the core part of the rock formation, and this part of the rock core will be retained in the core tube. After the coring is completed, the entire device is gradually lifted to the ground through the drill pipe. At this time, the rock sample in the core tube can be taken out for analysis by geological engineers.

[0004] However, in the existing oil drilling coring device, after the coring tube is lifted from the borehole to the ground, the core is often removed from the pipe manually, which takes a lot of time, especially in deep wells or complex geological conditions. Therefore, an oil drilling coring device is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an oil drilling coring device, which aims to improve the existing oil drilling coring device in the prior art. After the coring tube is lifted from the borehole to the ground, it is necessary to manually knock the core sample tube to shake it out in order to obtain the core sample, which is inconvenient.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an oil drilling coring device, comprising a main body, a circular hole is opened inside the main body, a support frame 1 is fixedly connected to the top of the main body, a fixed frame is fixedly connected inside the support frame 1, a cylinder 1 is fixedly connected to the inside of the fixed frame, a lifting block is fixedly connected to the output end of the cylinder 1, a motor is fixedly connected to the inside of the lifting block, a rotating block is fixedly connected to the output end of the motor, a cylinder 2 is fixedly connected to the inside of the rotating block, a cylinder is fixedly connected to the output end of the cylinder 2, a transmission rod is slidably connected to the outer wall of the cylinder, a fixed rod is rotatably connected to the outer wall of the transmission rod, the top of the fixed rod is fixedly connected to the rotating block, the bottom of the transmission rod is fixedly connected to a coring shell, and a fixing component is arranged on the top of the main body;

[0007] As a further description of the above technical solution: the fixing assembly includes a fixing block 1 and a fixing block 2, the bottom of the fixing block 2 is fixedly connected to the top of the fixing block 1, and the bottom of the fixing block 1 is fixedly connected to the top of the main body;

[0008] As a further description of the above technical solution: the fixed block 2 is rotatably connected to the rotating block 1 inside, and wheels are rotatably connected to both sides of the outer wall of the main body;

[0009] As a further description of the above technical solution: one side of the outer wall of the rotating block is fixedly connected to a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to a rotating column;

[0010] As a further description of the above technical solution: the rotating column 1 is rotatably connected to a connecting block, the connecting block is internally rotatably connected to a transmission column 1, and the transmission column 1 is internally rotatably connected to both sides of the outer wall of the fixed block 1;

[0011] As a further description of the above technical solution: the two sides of the outer wall of the fixed block 1 are rotatably connected to the rotating block 2, one side of the outer wall of the rotating block 2 is fixedly connected to the hydraulic cylinder 2, and the output end of the hydraulic cylinder 2 is fixedly connected to the rotating column 2;

[0012] As a further description of the above technical solution: both ends of the second rotating column are fixedly connected inside the connecting block, and the second transmission column is rotatably connected inside the connecting block;

[0013] As a further description of the above technical solution: the transmission column 2 is internally fixedly connected with a hydraulic cylinder 3, and the output end of the hydraulic cylinder 3 is fixedly connected with a supporting foot.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the cooperation among the cylinder 2, the cylinder, the transmission rod, the fixing rod and the coring shell achieves the effect of quickly taking out the core sample from the coring shell, thereby solving the problem of the existing coring device for oil drilling, that after the coring tube is lifted from the borehole to the ground, the core sample tube needs to be manually knocked to shake it out in order to obtain the core sample, which is inconvenient, and improves the convenience of coring.

[0016] 2. In the utility model, by the coordination among the fixed block 1, the fixed block 2, the rotating block 1, the hydraulic cylinder 1, the rotating column, the transmission column 1, the rotating block, the hydraulic cylinder 2, the connecting block, the transmission column 2, the hydraulic cylinder 3 and the supporting feet, the effect of supporting the device as a whole and making it more solid during the coring operation is achieved, which solves the problem that the lack of a supporting system may cause the drilling coring device to lack sufficient stability during operation, especially when encountering complex formations or high-resistance formations during drilling, the device may shake or deviate from the target trajectory, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a petroleum drilling coring device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a transmission rod of a petroleum drilling coring device proposed by the utility model;

[0019] Figure 3 The utility model is a schematic structural diagram of a transmission column 1 of a petroleum drilling coring device.

[0020] Legend:

[0021] 1. Main body; 2. Support frame 1; 3. Fixed frame; 4. Cylinder 1; 5. Lifting block; 6. Motor; 7. Rotating block; 8. Cylinder 2; 9. Cylinder; 10. Transmission rod; 11. Fixed rod; 12. Core shell; 13. Fixed block 1; 14. Fixed block 2; 15. Rotating block 1; 16. Hydraulic cylinder 1; 17. Rotating column 1; 18. Transmission column 1; 19. Rotating block 2; 20. Hydraulic cylinder 2; 21. Connecting block; 22. Transmission column 2; 23. Hydraulic cylinder 3; 24. Support foot; 25. Wheel; 26. Round hole; 27. Rotating column 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 - Figure 3, the utility model provides an embodiment: a petroleum drilling coring device, including a main body 1, a circular hole 26 is opened inside the main body 1, a support frame 2 is fixedly connected to the top of the main body 1, a fixed frame 3 is fixedly connected inside the support frame 2, a cylinder 4 is fixedly connected inside the fixed frame 3, a lifting block 5 is fixedly connected to the output end of the cylinder 4, a motor 6 is fixedly connected to the lifting block 5, a rotating block 7 is fixedly connected to the output end of the motor 6, a cylinder 2 8 is fixedly connected to the rotating block 7, a cylinder 9 is fixedly connected to the output end of the cylinder 2 8, a transmission rod 10 is slidably connected to the outer wall of the cylinder 9, a fixed rod 11 is rotatably connected to the outer wall of the transmission rod 10, the top of the fixed rod 11 is fixedly connected to the rotating block 7, the bottom of the transmission rod 10 is fixedly connected to the coring shell 12, and a fixed component is arranged on the top of the main body 1;

[0024] Specifically, when using the oil drilling coring device to perform coring work, first start the cylinder 4, then the cylinder 4 drives the lifting block 5 to descend, and indirectly drives the coring shell 12 to descend. When the coring shell 12 descends to the coring position, start the motor 6 to rotate. At this time, the motor 6 indirectly drives the coring shell 12 to rotate through the rotating block 7 and the cylinder 2 8, and at the same time, start the cylinder 4 to apply downward pressure to the coring shell 12, and then coring is performed. After the coring is completed, start the cylinder 4 to contract and bring the coring shell 12 to the ground. At this time, start the cylinder 2 8, and then drive the transmission rod 10 to separate the coring shell 12. At this time, the core sample can be taken out. This mechanism can not only quickly and conveniently take out the core sample, but also prevent the core from being damaged due to careless operation, which may cause data distortion or loss.

[0025] Reference Figure 1 - Figure 3 The fixing assembly includes a fixing block 13 and a fixing block 2 14, the bottom of the fixing block 2 14 is fixedly connected to the top of the fixing block 13, and the bottom of the fixing block 13 is fixedly connected to the top of the main body 1;

[0026] Specifically, when the oil drilling coring device is used, the fixing block 1 13 and the fixing block 2 14 connect the support system and the main body 1 , and the support system transmits stability to the main body 1 through the fixing block 1 13 and the fixing block 2 14 .

[0027] Reference Figure 1 - Figure 3, a rotating block 15 is rotatably connected inside the fixed block 14, wheels 25 are rotatably connected on both sides of the outer wall of the main body 1, a hydraulic cylinder 16 is fixedly connected to one side of the outer wall of the rotating block 15, a rotating column 17 is fixedly connected to the output end of the hydraulic cylinder 16, the rotating column 17 is rotatably connected to the connecting block 21, a transmission column 18 is rotatably connected inside the connecting block 21, the transmission column 18 is rotatably connected inside the fixed block 13 on both sides of the outer wall, the fixed block 13 is rotatably connected to the rotating block 2 19 on both sides of the outer wall, a hydraulic cylinder 20 is fixedly connected to one side of the outer wall of the rotating block 2 19, the output end of the hydraulic cylinder 20 is fixedly connected to the rotating column 27, both ends of the rotating column 27 are fixedly connected inside the connecting block 21, the connecting block 21 is rotatably connected to the transmission column 22, the transmission column 22 is fixedly connected to the hydraulic cylinder 3 23, and the output end of the hydraulic cylinder 3 23 is fixedly connected to the supporting foot 24;

[0028] Specifically, when the oil drilling coring device is not in use, the hydraulic cylinder three 23 is first started, and then the hydraulic cylinder three 23 drives the support foot 24 to rise, and then the hydraulic cylinder one 16 is started, and the hydraulic cylinder one 16 drives the connecting block 21 to rise. When it rises to a certain height, the support system is retracted above the main body 1 through the cooperation of the hydraulic cylinder one 16 and the hydraulic cylinder two 20. This mechanism can not only increase the stability of the device, but also prevent the device from being unable to effectively stabilize in the borehole when the drill rod encounters difficulties or the formation changes, thereby increasing the possibility of accidents, such as drill rod jamming or equipment damage, etc., and the device retracts the support system to the top of the main body 1, which can be more convenient to move and store.

[0029] Working principle: When using the oil drilling coring device, first start the hydraulic cylinder 16 and the hydraulic cylinder 20. The hydraulic cylinder 16 and the hydraulic cylinder 20 drive the connecting block 21 to move through the rotating column 17, thereby driving the transmission column 18 to descend. At the same time, the connecting block 21 drives the transmission column 22 to descend. After the transmission column 22 is vertical to the ground, start the hydraulic cylinder 3 23, and then the hydraulic cylinder 3 23 pushes the supporting foot 24 to descend until it touches the ground, thereby supporting the main body 1. After the support work is completed, start the cylinder 14, and the cylinder 14 pushes the lifting block 5 to descend, and then the lifting block 5 drives the rotating block 7 to descend until the core shell 12 reaches When the coring position is reached, the motor 6 is started at this time, and the motor 6 drives the rotating block 7 to rotate, and then drives the coring shell 12 to rotate. At the same time, the cylinder 4 is started, so that the coring shell 12 descends while rotating, and then the coring work is carried out. After the coring work is completed, the motor 6 is stopped, and the cylinder 4 is started to contract. The contraction of the cylinder 4 will drive the coring shell 12 to rise until it rises to the ground. After the coring shell 12 rises to the ground, the cylinder 2 8 is started to extend, and then the cylinder 9 is pushed down to squeeze the transmission rod 10. After the transmission rod 10 is squeezed, it will rotate and drive the coring shell 12 to open, and the core sample can be taken out at this time.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coring device for oil drilling, comprising a main body (1), characterized in that: A circular hole (26) is provided inside the main body (1); a support frame 1 (2) is fixedly connected to the top of the main body (1); a fixed frame (3) is fixedly connected inside the support frame 1 (2); a cylinder 1 (4) is fixedly connected to the inside of the fixed frame (3); a lifting block (5) is fixedly connected to the output end of the cylinder 1 (4); a motor (6) is fixedly connected to the inside of the lifting block (5); a rotating block (7) is fixedly connected to the output end of the motor (6); a cylinder 2 (8) is fixedly connected to the inside of the rotating block (7); a cylinder 2 (8) is fixedly connected to the output end of the cylinder 2 (8); a transmission rod (10) is slidably connected to the outer wall of the cylinder (9); a fixed rod (11) is rotatably connected to the outer wall of the transmission rod (10); the top of the fixed rod (11) is fixedly connected to the rotating block (7); the bottom of the transmission rod (10) is fixedly connected to a core removal shell (12); and a fixing component is provided on the top of the main body (1).

2. A petroleum drilling coring device according to claim 1, characterized in that: The fixing assembly comprises a fixing block 1 (13) and a fixing block 2 (14), wherein the bottom of the fixing block 2 (14) is fixedly connected to the top of the fixing block 1 (13), and the bottom of the fixing block 1 (13) is fixedly connected to the top of the main body (1).

3. A petroleum drilling coring device according to claim 2, characterized in that: The second fixed block (14) is rotatably connected to the first rotating block (15) inside, and wheels (25) are rotatably connected to both sides of the outer wall of the main body (1).

4. A petroleum drilling coring device according to claim 3, characterized in that: One side of the outer wall of the rotating block 1 (15) is fixedly connected to a hydraulic cylinder 1 (16), and the output end of the hydraulic cylinder 1 (16) is fixedly connected to a rotating column 1 (17).

5. The oil well drilling coring device according to claim 4, characterized in that: The rotating column 1 (17) is rotatably connected to a connecting block (21), the connecting block (21) is internally rotatably connected to a transmission column 1 (18), and the transmission column 1 (18) is internally rotatably connected to both sides of the outer wall of the fixed block 1 (13).

6. The oil well drilling coring device according to claim 5, characterized in that: The two sides of the outer wall of the fixed block 1 (13) are rotatably connected to the rotating block 2 (19), one side of the outer wall of the rotating block 2 (19) is fixedly connected to the hydraulic cylinder 2 (20), and the output end of the hydraulic cylinder 2 (20) is fixedly connected to the rotating column 2 (27).

7. A coring device for oil drilling according to claim 6, characterized in that: The two ends of the second rotating column (27) are fixedly connected inside the connecting block (21), and the connecting block (21) is rotatably connected inside with the second transmission column (22).

8. The oil well drilling coring device according to claim 7, characterized in that: The transmission column 2 (22) is internally fixedly connected to a hydraulic cylinder 3 (23), and the output end of the hydraulic cylinder 3 (23) is fixedly connected to a supporting foot (24).

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