Combination device for inner pipe weighting device and falling rock core treatment

Abstract

The invention relates to the technical field of geological exploration equipment, and discloses an inner tube weighting device and a falling rock core treatment combined device, the inner tube weighting device and the falling rock core treatment combined device comprise an inner tube weighting device and a striking part connected with the inner tube weighting device, and a screw thread is arranged at the joint of the inner tube weighting device and the striking part; the inner pipe weighting device comprises a conical spearhead, a cylindrical concave part is arranged at the bottom of the spearhead, a circular truncated cone is arranged below the concave part, a weighting part is arranged at the bottom of the circular truncated cone, and a first connecting part is arranged at the bottom of the weighting part; the striking part comprises a second connecting part matched with the first connecting part, a striking end is arranged at the bottom of the second connecting part, and a striking cone is arranged at the bottom of the striking end. The diameter of the bottom face of the weighting part is larger than that of the bottom face of the spearhead. The height of the second connecting part is larger than the total height of the spearhead and the concave part. The device can impact a rock core falling into a drill rod and knock the rock core out of a drill bit; the inner pipe weighting device can accelerate the descending process of the wire-line coring inner pipe.

Description

Technical Field

[0001] The invention relates to the technical field of geological prospecting equipment, and in particular to a combined device for processing an inner tube weight and a fallen core. Background Art

[0002] Rope coring technology is an important technology widely used in geological exploration and resource development. From the early simple manual drilling to the current mechanized and automated drilling, rope coring technology is also constantly improving and improving.

[0003] The application direction of rope coring technology is very wide, covering many fields such as geology, metallurgy, non-ferrous metals, coal, chemical industry, nuclear industry and building materials. In geological exploration, rope coring technology is widely used in mineral resource exploration, hydrogeological survey and environmental geological assessment. By drilling to obtain underground rock samples, subsequent geological analysis and evaluation can be carried out to provide a scientific basis for the development and utilization of mineral resources. In the field of metallurgy and non-ferrous metals, rope coring technology is used for ore exploration and geological survey before mining. By drilling to obtain ore samples, the composition and grade of the ore can be analyzed, providing important information for ore mining and processing. In the coal industry, rope coring technology is used for coal seam exploration and geological survey before coal mining, providing technical support for safe production and efficient mining of coal mines.

[0004] Although rope coring technology has made significant progress, there are still some unresolved technical problems in practical application. In the rope coring process, due to the core breaking, the core often falls into the drill pipe when salvaging the core. This not only affects the integrity of the coring, but may also cause difficulties in subsequent drilling. In the rope coring drilling process, especially the thin-walled drilling tool drilling, the gap between the inner tube and the drill pipe is very small, only a few millimeters. In the process of dropping the inner tube, the inner tube is affected by the buoyancy of the mud in the hole and the descent speed is very slow. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides an inner tube weighting device and a combined device for handling dropped cores, which solves the problems of core dropping and slow descent of the inner tube during rope coring drilling in the prior art.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: comprising an inner tube weighting device and a striking component connected to the inner tube weighting device, wherein a threaded thread is provided at the connection between the inner tube weighting device and the striking component;

[0007] The inner tube weighting device comprises a conical spearhead, a cylindrical recessed portion is arranged at the bottom of the spearhead, a truncated cone is arranged below the recessed portion, a weighting portion is arranged at the bottom of the truncated cone, and a first connecting portion is arranged at the bottom of the weighting portion;

[0008] The striking component comprises a second connecting portion matched with the first connecting portion, a striking end is arranged at the bottom of the second connecting portion, and a striking cone is arranged at the bottom of the striking end.

[0009] The beneficial effects of the present invention are as follows: the combined device is composed of an inner tube weighting device and a striking component, which are connected by a threaded connection. This design not only ensures the stability of the connection, but also facilitates disassembly and maintenance. The threaded connection has a self-locking property, which can maintain a stable connection when subjected to a large axial force, and prevent loosening or falling off due to vibration or impact.

[0010] In rope coring drilling, the core often falls into the drill pipe due to breaking, which not only increases the difficulty of salvage, but also often requires the large drill to be pulled out to solve the problem, which seriously wastes time and resources. This device can accurately impact the fallen core without salvaging the entire drill pipe through the striking component, and use the impact force of the striking cone to drive it out of the drill bit, thereby quickly resuming the drilling operation. This design significantly reduces the time required for large-scale drilling due to core falling, improves drilling efficiency, and reduces operating costs.

[0011] When drilling with thin-walled drilling tools, the gap between the inner tube and the drill pipe is extremely small, which makes the inner tube susceptible to the buoyancy of the mud in the hole during the deployment process, and it descends slowly, which not only prolongs the deployment time, but also may cause other problems due to the inner tube hovering for a long time. The inner tube weighter effectively overcomes the influence of mud buoyancy by increasing the overall weight of the device. When the inner tube weighter is deployed together with the inner tube, it can press the inner tube down quickly, significantly reducing the time it takes for the inner tube to reach the bottom.

[0012] Furthermore, in the above-mentioned combined device of the inner tube weighter and the fallen core treatment, the weighting part is a cylinder, and the bottom surface diameter of the weighting part is larger than the bottom surface diameter of the spear head.

[0013] The beneficial effects of adopting the above further solution are: the bottom diameter of the weighted part is larger than the bottom diameter of the spearhead, making the spearhead easier to match with the salvage device. Since the weighted part has a relatively large volume and mass, it can provide more stable support in the hole and reduce the device deviation or rotation caused by mud buoyancy or borehole tilt.

[0014] Furthermore, in the above-mentioned combined device of the inner tube weighter and the detached core processing, the height of the second connecting part is greater than the total height of the spearhead and the recessed part; the threaded thread includes a female thread arranged on the inner side of the first connecting part and a male thread arranged on the outer side of the second connecting part, and the inner diameter of the first connecting part is greater than the bottom diameter of the spearhead and the bottom diameter of the recessed part.

[0015] Furthermore, in the above-mentioned combined device of the inner tube weight and the detached core processing, a striking component is arranged below the inner tube weight, a salvage device is arranged above the inner tube weight, a rope is arranged above the salvage device, one end of the rope away from the salvage device is connected to a winch, and an outer tube is arranged outside the inner tube weight and the striking component.

[0016] The beneficial effect of adopting the above further solution is that during the drilling process, when the core falls into the drill pipe due to breakage or failure of the salvage device, the striking component can effectively knock down the core stuck in the drill pipe by using its weight and impact force. By connecting the rope with the winch, remote control and automatic operation of the salvage device, the striking component and the inner tube weighting device are realized.

[0017] Furthermore, in the above-mentioned combined device for processing the inner tube weight and the detached core, a rope coring inner tube is arranged below the inner tube weight, a salvage device is arranged above the inner tube weight, a rope is arranged above the salvage device, one end of the rope away from the salvage device is connected to a winch, and an outer tube is arranged outside the inner tube weight and the rope coring inner tube.

[0018] The beneficial effect of adopting the above further scheme is: the device sets a rope coring inner tube under the inner tube weighter, connects a salvage device on the top, and realizes remote control through the rope and winch. At the same time, the outer tube on the outside provides protection and guidance, and applies additional pressure to the inner tube through the inner tube weighter, which effectively overcomes the buoyancy of the mud, allowing the inner tube to descend to the predetermined depth more quickly, thereby significantly improving the drilling efficiency.

[0019] Furthermore, the threaded buckle of the above-mentioned inner tube weighting device and the combined device for handling the fallen core is a coarse square buckle.

[0020] The beneficial effects of the present invention are as follows: in response to the phenomenon that the core falls into the drill pipe, the device can effectively knock the core out of the drill bit by impacting the core, thereby avoiding the step of starting the large drill, greatly saving time costs, and significantly improving the coring efficiency.

[0021] When drilling with thin-walled drilling tools, due to the extremely small gap between the inner tube and the drill pipe, the inner tube is affected by the buoyancy of the mud in the hole and descends slowly. This not only affects the drilling progress, but also increases the difficulty of the operation. The use of the inner tube weighting device can significantly accelerate the descent process of the inner tube. After the inner tube is dropped, just hang the device on the salvage device and drop it into the drill pipe, and the inner tube can be quickly lowered by its own weight, thereby greatly reducing the time it takes for the inner tube to reach the bottom and improving drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of the combined device;

[0023] Figure 2is a schematic diagram of the cross-sectional structure of the combined device;

[0024] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Among them: 1. Inner tube weight; 2. Striking component; 3. Threaded thread; 4. Spearhead; 5. Recessed part; 6. Cone; 7. Weighted part; 8. First connecting part; 9. Second connecting part; 10. Striking end; 11. Striking cone; 12. Salvage device; 13. Rope; 14. Winch; 15. Outer tube; 16. Rope coring inner tube. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0028] Example 1

[0029] In the process of geological exploration and oil and gas well drilling, core falling is often encountered, which not only affects the accuracy of exploration data, but also poses a safety hazard to subsequent drilling operations. In order to effectively handle the fallen core and improve drilling efficiency, this embodiment provides a combined device of an inner tube weighter and fallen core treatment. The device realizes effective treatment of fallen cores by combining an inner tube weighter 1 with a striking component 2.

[0030] like Figures 1 to 3 As shown, the device comprises an inner tube weighting device 1 and a striking component 2 connected to the inner tube weighting device 1, and a threaded thread 3 is provided at the connection between the inner tube weighting device 1 and the striking component 2;

[0031] The inner tube weighting device 1 comprises a conical spearhead 4, a cylindrical recessed portion 5 is arranged at the bottom of the spearhead 4, and the recessed portion 5 is designed to enable the salvage device 12 to clamp it. A truncated platform 6 is arranged below the recessed portion 5, a weighting portion 7 is arranged at the bottom of the truncated platform 6, and a first connecting portion 8 is arranged at the bottom of the weighting portion 7;

[0032] The striking component 2 includes a second connecting portion 9 matched with the first connecting portion 8 , a striking end 10 is arranged at the bottom of the second connecting portion 9 , and a striking cone 11 is arranged at the bottom of the striking end 10 .

[0033] The weighted portion 7 is a cylinder, and the bottom diameter of the weighted portion 7 is larger than the bottom diameter of the spear head 4 .

[0034] The heights of the first connecting portion 8 and the second connecting portion 9 are both greater than the total height of the spearhead 4 and the recessed portion 5 .

[0035] A striking component 2 is provided below the inner tube weight 1, and a salvage device 12 is provided above the inner tube weight 1. The salvage device 12 is designed to firmly grasp the inner tube weight 1 and the striking component 2 during the recovery process to ensure that they can be smoothly lifted out of the wellhead. A rope 13 is provided above the salvage device 12, and the end of the rope 13 away from the salvage device 12 is connected to a winch 14. The winch 14 is designed to provide sufficient lifting force to lift the inner tube weight 1, the striking component 2 and any attached detached core out of the wellhead. At the same time, the winch 14 is also equipped with necessary control systems and safety devices to ensure the stability and safety of the lifting process. An outer tube 15 is provided on the outside of the inner tube weight 1 and the striking component 2.

[0036] When in use, the entire device is placed into the well through the rope 13 and the winch 14 until the inner tube weight 1 contacts the detached core. Then, the rope 13 is released by controlling the winch 14, so that the inner tube weight 1 and the striking component 2 fall under the action of gravity, and the striking cone 11 of the striking component 2 strikes the detached core. After the treatment is completed, the rope 13 is lifted by the winch 14, and the inner tube weight 1, the striking component 2 and the attached detached core are lifted out of the wellhead for recovery and treatment.

[0037] Example 2

[0038] In the process of geological exploration and mineral mining, coring is an important means of obtaining underground geological information. However, in actual operation, due to the small gap between the drill rod and the inner tube, the inner tube often has a slow descent speed under the buoyancy of the mud in the hole, which not only affects the efficiency of coring, but also may cause the core to fall off due to the inner tube staying in the hole for too long, further increasing the complexity and cost of the operation. In order to solve this problem, this embodiment provides a combined device for an inner tube weighter and a fallen core treatment device, which aims to accelerate the falling speed of the inner tube by weighting it, while ensuring the integrity of the core and the efficiency of the operation.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, the device includes an inner tube weighter 1 and a striking component 2 connected to the inner tube weighter 1. A threaded buckle 3 is provided at the connection between the inner tube weighter 1 and the striking component 2. The threaded buckle 3 is a coarse square buckle to prevent easy wear.

[0040] The inner tube weighting device 1 comprises a conical spearhead 4, a cylindrical recessed portion 5 is arranged at the bottom of the spearhead 4, a truncated cone 6 is arranged below the recessed portion 5, a weighting portion 7 is arranged at the bottom of the truncated cone 6, and a first connecting portion 8 is arranged at the bottom of the weighting portion 7;

[0041] The striking component 2 includes a second connecting portion 9 matched with the first connecting portion 8 , a striking end 10 is arranged at the bottom of the second connecting portion 9 , and a striking cone 11 is arranged at the bottom of the striking end 10 .

[0042] The weighted portion 7 is a cylinder, and the bottom diameter of the weighted portion 7 is larger than the bottom diameter of the spear head 4 .

[0043] The height of the second connecting part 9 is greater than the total height of the spearhead 4 and the recessed part 5; the threaded thread 3 includes a female thread arranged on the inner side of the first connecting part 8 and a male thread arranged on the outer side of the second connecting part. The inner diameter of the first connecting part 8 is greater than the bottom diameter of the spearhead 4 and the bottom diameter of the recessed part 5, so that when the weighting device is used alone, it can have a high degree of fit with the spearhead part on the rope coring inner tube 16, thereby reducing wear and accidents.

[0044] A rope coring inner tube 16 is arranged below the inner tube weighter 1, a salvage device 12 is arranged above the inner tube weighter 1, a rope 13 is arranged above the salvage device 12, one end of the rope 13 away from the salvage device 12 is connected to a winch 14, and an outer tube 15 is arranged outside the inner tube weighter 1 and the rope coring inner tube 16.

[0045] When the device is in operation, first connect the salvage device 12, the inner tube weight 1 and the rope coring inner tube 16 in sequence through the rope 13, and ensure that the connection is firm. Then, put the combined device into the borehole as a whole, and use the winch 14 to control the lifting and lowering of the rope 13, thereby controlling the position of the inner tube and the weight. The inner tube weight 1 effectively overcomes the influence of mud buoyancy by increasing the overall weight of the device. When the inner tube weight 1 is dropped together with the rope coring inner tube 16, it can press the rope coring inner tube 16 down quickly, significantly reducing the time it takes for the inner tube to reach the bottom.

[0046] The combined device of the inner tube weighter and the fallen core treatment provided by the present invention effectively solves the problems of slow inner tube descent and core falling through the design of the inner tube weighter 1 and the striking component 2, improves the efficiency and accuracy of coring in drilling, and has broad application prospects and market value.

Claims

1. A combined device for an inner tube weighting device and a fallen core treatment device, characterized in that: It comprises an inner tube weighter (1) and a striking component (2) connected to the inner tube weighter (1), wherein a threaded screw (3) is provided at the connection between the inner tube weighter (1) and the striking component (2); The inner tube weight (1) comprises a conical spearhead (4), a cylindrical recessed portion (5) is arranged at the bottom of the spearhead (4), a truncated cone (6) is arranged below the recessed portion (5), a weighted portion (7) is arranged at the bottom of the truncated cone (6), and a first connecting portion (8) is arranged at the bottom of the weighted portion (7); The striking component (2) comprises a second connecting portion (9) matching the first connecting portion (8), a striking end (10) is arranged at the bottom of the second connecting portion (9), and a striking cone (11) is arranged at the bottom of the striking end (10).

2. The combined device for treating the inner tube weight and the fallen core according to claim 1, characterized in that: The weighted portion (7) is a cylinder, and the bottom diameter of the weighted portion (7) is greater than the bottom diameter of the spearhead (4).

3. The combined device for treating the inner tube weight and the fallen core according to claim 1, characterized in that: The height of the second connecting portion (9) is greater than the total height of the spearhead (4) and the recessed portion (5); the threaded screw (3) comprises a female thread arranged on the inner side of the first connecting portion (8) and a male thread arranged on the outer side of the second connecting portion, and the inner diameter of the first connecting portion (8) is greater than the bottom diameter of the spearhead (4) and the bottom diameter of the recessed portion (5).

4. The combined device for treating the inner tube weight and the fallen core according to any one of claims 1 to 3, characterized in that: A striking component (2) is arranged below the inner tube weight (1), a salvage device (12) is arranged above the inner tube weight (1), a rope (13) is arranged above the salvage device (12), an end of the rope (13) away from the salvage device (12) is connected to a winch (14), and an outer tube (15) is arranged outside the inner tube weight (1) and the striking component (2).

5. The combined device for treating the inner tube weighting device and the fallen core according to any one of claims 1 to 3, characterized in that: A rope coring inner tube (16) is arranged below the inner tube weight (1), a salvage device (12) is arranged above the inner tube weight (1), a rope (13) is arranged above the salvage device (12), an end of the rope (13) away from the salvage device (12) is connected to a winch (14), and an outer tube (15) is arranged outside the inner tube weight (1) and the rope coring inner tube (16).

6. The combined device for treating the inner tube weight and the fallen core according to claim 1, characterized in that: The threaded buckle (3) is a coarse square buckle.

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