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

Abstract

The utility model relates to the technical field of geological exploration equipment, and discloses an inner tube weighting device and a falling core processing combined device, which 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 utility model relates to the technical field of geological exploration equipment, in particular to a combined device for processing an inner tube weighting device and a fallen core. Background Art

[0002] Rope coring is an important technology widely used in geological exploration and resource development. From the early days of simple manual drilling to today's mechanized and automated drilling, rope coring technology has continued to advance and improve.

[0003] Rope coring technology has a wide range of applications, encompassing geology, metallurgy, nonferrous metals, coal, chemicals, nuclear industry, and building materials. In geological exploration, rope coring is widely used in mineral resource exploration, hydrogeological surveys, and environmental geological assessments. Drilling to obtain underground rock samples enables subsequent geological analysis and assessment, providing a scientific basis for the development and utilization of mineral resources. In the metallurgical and nonferrous metals sectors, rope coring is used in ore exploration and pre-mining geological surveys. Ore samples obtained through drilling can be analyzed for composition and grade, providing crucial information for ore mining and processing. In the coal industry, rope coring is used for coal seam exploration and pre-mining geological surveys, providing technical support for safe production and efficient mining.

[0004] Despite significant progress in wireline coring technology, several unresolved technical challenges remain in practical application. During wireline coring, core breakage often results in core falling into the drill pipe during recovery. This not only compromises the integrity of the core but can also hinder subsequent drilling. During wireline coring, especially with thin-walled drill tools, the gap between the inner tube and the drill pipe is minimal, only a few millimeters. During the release of the inner tube, the buoyancy of the mud in the hole slows its descent. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a combined device for an inner tube weighter and a dropped core treatment device, 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 purpose of the utility model, the technical solution adopted by the utility model is as follows: 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 includes a conical spearhead, a cylindrical recessed portion is provided at the bottom of the spearhead, a frustum is provided below the recessed portion, a weighting portion is provided at the bottom of the frustum, and a first connecting portion is provided 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 this utility model are as follows: the combined device consists of two parts: 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 is self-locking, maintaining a stable connection even under large axial forces and preventing loosening or falling off due to vibration or impact.

[0010] During wireline coring drilling, cores often break and fall into the drill pipe. This not only increases the difficulty of recovery but also often requires the drill to be pulled out, significantly wasting time and resources. This device uses a striking component to precisely impact the fallen core without salvaging the entire drill pipe. The impact force of the striking cone then dislodges it from the drill bit, allowing drilling operations to resume quickly. This design significantly reduces the time required to pull out the drill due to core drop, improving drilling efficiency and reducing operating costs.

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

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

[0013] The beneficial effects of this further embodiment are: the base diameter of the weighted portion is larger than that of the spearhead, making it easier to fit the spearhead onto the overshot device. Due to the relatively large size and mass of the weighted portion, it provides more stable support within the hole, reducing 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 fallen core processing, the height of the second connecting part is greater than the total height of the spear head 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 spear head and the bottom diameter of the recessed part.

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

[0016] The beneficial effect of this further solution is that during drilling, if the core falls into the drill pipe due to breakage or salvage device failure, the striking component can effectively knock the core out of the drill pipe using its weight and impact force. The connection between the rope and the winch enables remote control and automated operation of the salvage device, the striking component, and the inner tube weighting device.

[0017] Furthermore, in the above-mentioned combined device for processing the inner tube weight and the fallen 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, the 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-mentioned further scheme is as follows: 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, effectively overcoming the buoyancy of the mud, so that the inner tube can be lowered 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 processing the fallen core is a coarse square buckle.

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

[0021] When drilling with thin-walled drilling tools, the inner tube is affected by the buoyancy of the mud in the hole, slowing its descent due to the extremely small gap between the inner tube and the drill pipe. This not only hinders drilling progress but also increases the difficulty of the operation. However, the use of this inner tube weighting device can significantly accelerate the descent of the inner tube. After deploying the inner tube, simply attach the device to the overshot and lower it into the drill pipe. Its own weight will then rapidly lower the inner tube, significantly reducing the time it takes to reach the bottom and improving drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the combined device;

[0023] Figure 2Schematic diagram of the cross-sectional structure of the combined device;

[0024] Figure 3 This is a schematic structural diagram of Example 1 of the present utility model;

[0025] Figure 4 This is a schematic structural diagram of Example 2 of the present utility model;

[0026] Among them: 1. Inner tube weight; 2. Striking component; 3. Thread; 4. Spearhead; 5. Recessed portion; 6. Cone; 7. Weighted portion; 8. First connecting portion; 9. Second connecting portion; 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 methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all utility model creations using the concept of the present invention are protected.

[0028] Example 1

[0029] During geological exploration and oil and gas well drilling, core loss is common, which not only affects the accuracy of exploration data but also poses a safety hazard to subsequent drilling operations. To effectively handle lost cores and improve drilling efficiency, this embodiment provides a combined device for handling lost cores using an inner tube weighting device (1) and a striking component (2). This device effectively handles lost cores by combining an inner tube weighting device (1) with a striking component (2).

[0030] like Figures 1 to 3 As shown, the device includes 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 weight 1 includes a conical spearhead 4, with a cylindrical recess 5 at the bottom. The recess 5 is designed to allow the salvage device 12 to clamp it. A frustum 6 is provided below the recess 5, a weight 7 is provided at the bottom of the frustum 6, and a first connecting portion 8 is provided at the bottom of the weight 7.

[0032] The striking component 2 includes a second connecting portion 9 matched with the first connecting portion 8 , a striking end 10 is provided at the bottom of the second connecting portion 9 , and a striking cone 11 is provided 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 cores out of the wellhead. At the same time, the winch 14 is also equipped with necessary control systems and safety devices to ensure the smoothness 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] During use, the entire device is lowered into the well via a rope 13 and a winch 14 until the inner tube weight 1 contacts the detached core. The winch 14 then releases the rope 13, causing the inner tube weight 1 and striking component 2 to fall under gravity while the striking cone 11 of the striking component 2 strikes the detached core. Once the core is detached, the winch 14 raises the rope 13 again, lifting the inner tube weight 1, striking component 2, and attached detached core out of the wellhead for recovery and processing.

[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. This not only affects the efficiency of coring, but may also 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. 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 includes a conical spearhead 4, a cylindrical recessed portion 5 is provided at the bottom of the spearhead 4, a frustum 6 is provided below the recessed portion 5, a weighting portion 7 is provided at the bottom of the frustum 6, and a first connecting portion 8 is provided 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 provided at the bottom of the second connecting portion 9 , and a striking cone 11 is provided 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, 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, and the 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, the combined device is placed into the borehole as a whole, and the winch 14 is used 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 deployed 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 utility model effectively solves the problems of slow descent of the inner tube and falling core 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 weighting device (1) and a striking component (2) connected to the inner tube weighting device (1), wherein a threaded screw thread (3) is provided at the connection between the inner tube weighting device (1) and the striking component (2); The inner tube weight (1) comprises a conical spearhead (4), a cylindrical recessed portion (5) is provided at the bottom of the spearhead (4), a truncated cone (6) is provided below the recessed portion (5), a weighted portion (7) is provided at the bottom of the truncated cone (6), and a first connecting portion (8) is provided 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 provided at the bottom of the second connecting portion (9), and a striking cone (11) is provided at the bottom of the striking end (10).

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

3. The combined device of inner tube weighting device and fallen core treatment 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 a fallen core and an inner tube weighting device according to any one of claims 1 to 3, characterized in that: A striking component (2) is provided below the inner tube weight (1), a salvage device (12) is provided above the inner tube weight (1), a rope (13) is provided 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 provided outside the inner tube weight (1) and the striking component (2).

5. The combined device for treating a fallen core and an inner tube weighting device according to any one of claims 1 to 3, characterized in that: A rope coring inner tube (16) is provided below the inner tube weighter (1), a salvage device (12) is provided above the inner tube weighter (1), a rope (13) is provided 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 provided outside the inner tube weighter (1) and the rope coring inner tube (16).

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

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