Device for handling drill rod breakage accident in hole and method of using the same

Abstract

The present invention discloses a device for handling drill rod breakage accidents in a hole. The device comprises a mother cone and a ring buckle straightening device; the ring buckle straightening device is connected to the mother cone; the ring buckle straightening device comprises a ring buckle, a connecting rod, and a fixing device; the ring buckle is fixed below its fixing device via the connecting rod and is located below the mother cone; the fixing device is fixed to the lower end of the salvaged drill rod and is arranged outside the upper end of the mother cone; the ring buckle is an annular structure with one end open; the diameter of the broken drill rod is larger than the distance between the open ends of the ring buckle and smaller than the inner diameter of the ring buckle. The present invention has the advantages of greatly increasing the probability of successfully handling drill rod breakage accidents in a hole, avoiding losses caused by waste hole accidents, and thus ensuring the smooth progress of exploration work.

Description

Technical Field

[0001] The present invention relates to the field of drilling technology, and more specifically to a device for handling drill rod breakage accidents in a hole. The present invention also relates to a method for using the device for handling drill rod breakage accidents in a hole. Background Art

[0002] Geological drilling is a crucial method for obtaining accurate subsurface geological data. It utilizes mechanical equipment or tools to drill holes in rock (or soil) strata and retrieve core samples to understand the geological conditions. It is a primary method of engineering geological survey. There are two primary causes of drill rod breakage in holes: First, geological factors, which are particularly prevalent in loose, oversized, and fractured karst formations; and second, damage to the drill rod during processing, storage, transportation, use, and safekeeping, which reduces its lifespan. Dealing with drill rod breakage is challenging and requires significant human and material resources.

[0003] The current method for handling drill pipe breakage is to use male and female tapers for salvage. The male taper has a salvage thread machined onto its circular body, allowing for a salvage loop to be created from the inside of the broken drill pipe. The female taper, on the other hand, has a salvage thread machined onto its inner surface, allowing for a salvage loop to be created from the outside of the broken drill pipe. However, due to the complex conditions within the borehole, broken drill pipe often does not stand upright in the hole, but rather leans against or is inserted at an angle into the hole wall. Since the broken drill pipe clings tightly to the hole wall, the traditional salvage method of directly connecting the drill pipe to the female or male taper makes it difficult to quickly connect the male and female tapers to the broken drill pipe. In most cases, the female taper will hold the fallen drill pipe in place, causing it to become even more firmly lodged in the hole, making salvage more difficult. The potential for a failed hole is very high.

[0004] Therefore, it is necessary to develop a device that can salvage the broken drill pipe that is leaning against or tilted into the hole wall and prevent the waste hole from occurring. Summary of the Invention

[0005] The first purpose of the present invention is to provide a device for handling drill rod breakage accidents in holes, which is a salvage device for solving drill rod breakage in holes in complicated situations, thereby improving the success rate of salvaging broken drill rods that are leaning against or inserted obliquely into the hole wall, greatly increasing the probability of successfully handling drill rod breakage accidents in holes, avoiding the losses caused by waste hole accidents, and thus ensuring the smooth progress of exploration work; and solving the problem that when the situation in the hole is complicated and a broken drill rod is tightly leaning against or inserted obliquely into the hole wall, the existing salvage method is difficult to salvage the broken drill rod.

[0006] The second purpose of the present invention is to provide a method for using the device for handling drill rod breakage accidents in a hole.

[0007] In order to achieve the first object of the present invention, the technical solution of the present invention is: a device for handling drill rod breakage accidents in a hole, characterized by comprising a female cone and a ring buckle straightening device; the ring buckle straightening device is connected to the female cone through its fixing device;

[0008] The ring buckle straightening device includes a ring buckle, a connecting rod, and a fixing device; the ring buckle is fixed below the fixing device through the connecting rod and is located below the female cone;

[0009] The fixing device is fixed to the lower end of the salvage drill pipe and is arranged on the outer side of the upper end of the female cone;

[0010] The buckle is a ring-shaped structure with one end open;

[0011] The diameter of the broken drill rod is larger than the distance between the open ends of the ring buckle and smaller than the inner diameter of the ring buckle.

[0012] In the above technical solution, the upper end of the connecting rod is connected to the lower end of the fixing device, and the lower end is connected to the side end of the buckle and is arranged away from the open end of the buckle.

[0013] In the above technical solution, the ring buckle includes a connecting shaft, a sector ring 1, a sector ring 2, a stopper and a half ring;

[0014] The first sector ring and the second sector ring are symmetrically arranged at intervals;

[0015] Sector ring 1 and sector ring 2 are connected to both ends of the half ring through connecting shafts respectively;

[0016] The fan ring 1 and the fan ring 2 are respectively hinged to the connecting shaft, and limiters are arranged below the connection between the fan ring 1 and the connecting shaft and below the connection between the fan ring 2 and the connecting shaft.

[0017] In the above technical solution, the ring buckle further includes a spring device;

[0018] The spring device is arranged on the outside of the connecting shaft and is connected to the first sector ring and the second sector ring respectively.

[0019] In the above technical solution, the connecting rod is fixed to the middle of the upper end of the half ring;

[0020] The diameter of the broken drill rod is larger than the minimum distance between the sector ring 1 and the sector ring 2, and smaller than the minimum inner diameter of the ring buckle.

[0021] In order to achieve the second object of the present invention, the technical solution of the present invention is as follows: a method for using the device for handling drill rod breakage accidents in a hole, characterized in that: the device is connected to the salvage drill rod and the drilling rig through the threaded opening on the female cone; the power generated by the drilling rig is transmitted to the device through the salvage drill rod;

[0022] The specific steps include:

[0023] Step 1: During use, the device for handling drill rod breakage accidents in a hole is transported to the location where the broken drill rod is located by salvaging the drill rod;

[0024] Step 2: The salvaged drill pipe continues to move downward, and the fan rings 1 and 2 touch the broken drill pipe and open upward until the broken drill pipe enters the ring buckle. The fan rings 1 and 2 are restored to their original positions by the elastic force of the spring device at the connecting shaft;

[0025] Step 3: Then pull the drill pipe upward. Sector ring 1 and sector ring 2 cannot move downward due to the restriction of the limiter. Use the lifting force of the ring buckle straightening device to straighten the broken drill pipe.

[0026] Step 4: After the broken drill pipe is straightened, move the salvage drill pipe downward, and the upper end of the broken drill pipe enters the mother cone. The drilling rig drives the mother cone to rotate and create a buckle on the broken drill pipe, so that the broken drill pipe is connected to the mother cone. Then use the drilling rig to pull the salvage drill pipe upward to complete the salvage work of the broken drill pipe.

[0027] Combining all the above technical solutions, the advantages and positive effects of the present invention are as follows:

[0028] (1) The present invention uses a female cone and a ring buckle straightening device to quickly and effectively salvage a drill rod that has fallen in a hole and is leaning against or inserted obliquely into the hole wall; it greatly increases the probability of successfully handling drill rod breakage accidents in the hole, avoids the losses caused by waste hole accidents, and thus ensures the smooth progress of the survey work; it solves the problem that when the situation in the hole is complicated and a broken drill rod is tightly leaning against or inserted obliquely into the hole wall, it is difficult to salvage the broken drill rod with the existing salvage method;

[0029] (2) The connection between the female cone and the ring buckle straightening device of the present invention is provided with a thread, and the ring buckle straightening device fixing device is connected to the female cone through a threaded connection, which effectively reduces the risk of falling off during the process of salvaging the drill pipe;

[0030] (3) The dimensions D1 (minimum spacing between the open ends of the ring buckle) and D2 (minimum inner diameter of the ring buckle) of the present invention can be adjusted and customized according to the diameter of the dropped drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a schematic diagram of the working structure of the device for handling drill rod breakage accidents in a hole.

[0032] Figure 2 It is a front view of the ring buckle of the ring buckle straightening device in the present invention.

[0033] Figure 3 It is a left side view of the ring buckle of the ring buckle straightening device in the present invention.

[0034] Figure 4It is a bottom view of the ring buckle of the ring buckle straightening device in the present invention.

[0035] Figure 5 The present invention is a structural schematic diagram of a device for handling drill rod breakage accidents in a hole.

[0036] exist Figure 2 In the figure, D1 represents the minimum distance between the open ends of the buckle; D2 represents the minimum inner diameter of the buckle.

[0037] In the figure, 1-salvaged drill pipe, 2-ring buckle straightening device fixing device, 3-female cone, 4-connecting rod of the ring buckle straightening device, 5-ring of the ring buckle straightening device, 6-drilling hole, 7-dropped or broken drill pipe, 8-connecting shaft, 9-sector ring 1, 10-sector ring 2, 11-limiter, 12-half ring, 13-connecting point between connecting rod and ring buckle, 14-spring device, 15-ring buckle straightening device. DETAILED DESCRIPTION

[0038] The following detailed description of the embodiments of the present invention is given in conjunction with the accompanying drawings, which do not limit the present invention but are merely examples. The description makes the advantages of the present invention clearer and easier to understand.

[0039] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", and "tail" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] Referring to the accompanying drawings, it can be seen that: a device for handling drill rod breakage accidents in a hole, comprising a female cone 3 and a ring buckle straightening device 15;

[0041] The buckle straightening device 15 is connected to the female cone 3 through its fixing device 2;

[0042] The ring buckle straightening device 15 includes a ring buckle 5, a connecting rod 4, and a fixing device 2; the ring buckle 5 is fixed below the fixing device 2 through the connecting rod 4 and is located below the female cone 3;

[0043] The fixing device 2 of the ring buckle straightening device is fixed to the lower end of the fishing drill pipe 1 and is arranged on the outer side of the upper end of the female cone 3;

[0044] The ring buckle 5 is a ring structure with one end open;

[0045] The diameter of the broken drill rod 7 is larger than the distance between the open ends of the ring buckle 5 and smaller than the inner diameter of the ring buckle 5 .

[0046] Furthermore, the upper end of the connecting rod 4 is connected to the lower end of the fixing device 2 , and the lower end is connected to the side end of the buckle 5 and is arranged away from the open end of the buckle 5 .

[0047] Furthermore, the ring buckle 5 includes a connecting shaft 8, a sector ring 1 9, a sector ring 2 10, a stopper 11 and a half ring 12;

[0048] The fan ring 1 9 and the fan ring 2 10 are symmetrically arranged at intervals; the distance between the fan ring 1 9 and the fan ring 2 10 forms an opening at one end of the ring buckle 5. When salvaging the broken drill rod 7, the fan ring 1 9 and the fan ring 2 10 are respectively and independently rotated upward along the connecting shaft 8 (the rotation angles of the fan ring 1 9 and the fan ring 2 10 can be the same or different), and are respectively sleeved on the side walls of the salvaged broken drill rod 7. They can be sleeved in any situation (such as the broken drill rod 7 is tilted and stuck in the drill hole, and / or the broken drill rod is tilted and stuck up and down). Both ends are inserted into the borehole wall, and / or the upper end of the broken drill rod is an irregular structure (such as a tooth shape, etc.) of the outer periphery of the broken drill rod 7. At this time, the upper end of the broken drill rod 7 is against the open end of the ring buckle 5, and then continues to move downward, driving the fan ring 1 9 and the fan ring 2 10 to move downward through the connecting rod 4. The fan ring 1 9 and the fan ring 2 10 are restored to their original position due to the action of the spring device 14 at the connecting shaft, so that the broken drill rod 7 enters the interior of the ring buckle 5, and then the drill rod 1 is pulled upward and the fan ring 1 is pulled upward. 9 and fan ring 2 10 cannot move downward due to the restriction of the limiter 11, and the broken drill rod 7 is gradually straightened and straightened by the lifting force of the ring buckle 5 and the connecting rod 4 in the ring buckle straightening device 15, so that the broken drill rod 7 is aligned with the female cone 3, which facilitates the salvage of the broken drill rod 7. During the straightening process, the open end of the ring buckle 5 moves along the broken drill rod 7 from the upper end to the lower end, thereby improving the capture rate of the broken drill rod 7 and thus improving the success rate of salvaging the broken drill rod 7; it overcomes the problem of the prior art using the whole When the broken drill rod 7 is tilted and stuck in the borehole, and / or the upper and lower ends of the broken drill rod are inserted into the borehole wall, and / or the upper end of the broken drill rod has an irregular structure (such as teeth, etc.), the fully enclosed umbrella-shaped catcher or rotating steel claw cannot cover the upper end of the broken drill rod, nor can the broken drill rod be straightened by the gradual shrinkage of the umbrella-shaped catcher or rotating steel claw, resulting in the inability to capture and salvage the broken drill rod 7, and a low success rate in salvaging the broken drill rod 7.

[0049] Sector ring 1 9 and sector ring 2 10 are connected to both ends of the half ring 12 through connecting shaft 8 respectively;

[0050] Sector ring 1 9 and sector ring 2 10 are respectively hinged to connecting shaft 8 and can rotate about connecting shaft 8. A stopper 11 is located below the connection between sector ring 1 9 and connecting shaft 8 and below the connection between sector ring 2 10 and connecting shaft 8. Stopper 11 restricts the downward movement of sector ring 1 9 and sector ring 2 10, and sector ring 1 9 and sector ring 2 10 can only be opened upward. The mother cone 3 and the ring buckle straightening device 15 move downward. Sector ring 1 9 and sector ring 2 10 of the ring buckle 5 contact the broken drill rod 7 and then open upward. Continue to move downward, and the broken drill rod 7 fully enters the ring buckle 5, and sector ring 1 9 and sector ring 2 10 return to their original position. The mother cone 3 and the ring buckle straightening device 15 move upward. Stopper 11 restricts the downward movement of sector ring 1 9 and sector ring 2 10, thereby lifting and straightening the broken drill rod 7. The mother cone 3 and the ring buckle straightening device 15 move downward, and the upper end of the broken drill rod 7 enters the mother cone 3. The drilling rig drives the mother cone 3 to rotate and make a buckle on the broken drill rod 7, so that the broken drill rod 7 is connected to the mother cone 3, and then the drilling rig is used to pull it upward to complete the salvage work.

[0051] Furthermore, the ring buckle 5 also includes a spring device 14;

[0052] The spring device 14 is arranged on the outside of the connecting shaft 8 and is connected to the fan ring 1 9 and the fan ring 2 10 respectively. When there is no obstacle, the fan ring 1 9 and the fan ring 2 10 will return to their original position.

[0053] Furthermore, the connecting rod 4 is fixed to the middle of the upper end of the half ring 12 (i.e., the connecting rod 4 is fixed to the connecting rod and the buckle connection point 13);

[0054] The diameter of the broken drill rod 7 is required to be larger than D1 (the minimum distance between the open ends of the ring buckle 5) and smaller than D2 (the minimum inner diameter of the ring buckle 5), that is, the broken drill rod 7 is required to be able to enter the ring buckle 5.

[0055] Referring to the accompanying drawings, it can be seen that the method of using the device for handling drill rod breakage accidents in a hole is to connect the salvage drill rod 1 and the drilling rig through the threaded opening on the female cone 3; the power generated by the drilling rig is transmitted to the device for handling drill rod breakage accidents in a hole through the salvage drill rod 1;

[0056] The specific steps include:

[0057] Step 1: During use, the device for handling drill rod breakage in a hole is transported to the location of the broken drill rod 7 by salvaging the drill rod 1;

[0058] Step 2: The salvaged drill pipe 1 continues to move downward, and the fan ring 1 9 and the fan ring 2 10 touch the broken drill pipe 7 and then open upward until the broken drill pipe 7 enters the ring buckle 5. The fan ring 1 9 and the fan ring 2 10 return to their original position due to the elastic force of the spring device 14 at the connecting shaft;

[0059] Step 3: Then pull up the salvaged drill pipe 1. The fan ring 1 9 and the fan ring 2 10 cannot move downward due to the restriction of the limiter 11. The broken drill pipe 7 is straightened by the pulling force of the ring buckle straightening device 15.

[0060] Step 4: After the broken drill rod 7 is straightened, move the salvage drill rod 1 downward, and the upper end of the broken drill rod 7 enters the mother cone 3. The drilling rig drives the mother cone 3 to rotate and create a buckle on the broken drill rod 7, so that the broken drill rod 7 is connected to the mother cone 3. Then use the drilling rig to pull the salvage drill rod 1 upward to complete the salvage work of the broken drill rod 7.

[0061] Example

[0062] like Figures 1 to 2 As shown, an embodiment of the present invention provides a device for handling drill rod breakage accidents in a hole, comprising a female cone and a ring buckle straightening device.

[0063] The ring-shaped straightening device is connected to the mother cone through its fixing device. The diameter of the broken drill pipe is larger than D1 (the minimum distance between the ring-shaped open ends) and smaller than D2 (the minimum inner diameter of the ring). The ring-shaped dimensions D1 and D2 can be adjusted and customized according to the diameter of the dropped drill pipe.

[0064] Step 1: During use, the present invention is connected to a salvage drill pipe and a drilling rig via the threaded opening on the female cone. Power generated by the drilling rig is transmitted to the device via the salvage drill pipe. During use, the salvage drill pipe is used to transport the device to the location of the broken drill pipe.

[0065] Step 2: The device for salvaging the drill rod 1 and handling drill rod breakage accidents in the hole continues to move downward, and the fan ring 1 9 and the fan ring 2 10 touch the broken drill rod 7 and open upward until the broken drill rod 7 enters the ring buckle 5. The fan ring 1 9 and the fan ring 2 10 return to their original position due to the elastic force of the spring device 14 at the connecting shaft 8.

[0066] Step 3: Then pull up the salvage drill pipe 1. The fan ring 1 9 and the fan ring 2 10 cannot move downward due to the restriction of the limiter 11. The broken drill pipe 7 is straightened by the pulling force of the salvage drill pipe 1 and the ring buckle straightening device 15.

[0067] Step 4: After the broken drill rod 7 is straightened, the salvage drill rod 1 is moved downward, and the upper end of the broken drill rod 7 enters the mother cone 3. The drilling rig drives the mother cone 3 to rotate and makes a buckle on the broken drill rod 7, so that the broken drill rod 7 is connected to the mother cone 3. Then the drilling rig is used to pull up the salvage drill rod 1 and the device for handling drill rod breakage accidents in the hole to complete the salvage work of the broken drill rod 7.

[0068] In order to more clearly illustrate the advantages of the device and method for handling drill rod breakage accidents in the present invention compared with the prior art, the staff compared the two technical solutions. The comparison results are shown in the following table:

[0069]

[0070] As can be seen from the above table, compared with the prior art, the device and method for handling drill rod breakage accidents in the present invention can quickly and effectively salvage the drill rod that has fallen into the hole and is leaning against or inserted obliquely into the hole wall, greatly increasing the probability of successfully handling drill rod breakage accidents in the hole, avoiding the losses caused by waste hole accidents, and thus ensuring the smooth progress of the exploration work.

[0071] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.

[0072] Other parts not described belong to the prior art.

Claims

1. A device for handling drill rod breakage accidents in a hole, characterized by: It comprises a female cone (3) and a ring buckle straightening device (15); The ring buckle straightening device (15) is connected to the female cone (3); The ring buckle straightening device (15) comprises a ring buckle (5), a connecting rod (4), and a fixing device (2); the ring buckle (5) is fixed below the fixing device (2) through the connecting rod (4) and is located below the female cone (3); The fixing device (2) is fixed to the lower end of the salvage drill rod (1) and is arranged outside the upper end of the female cone (3); The ring buckle (5) is a ring structure with one end open; The diameter of the broken drill rod (7) is larger than the distance between the open ends of the ring buckle (5) and smaller than the inner diameter of the ring buckle (5); The ring buckle (5) comprises a connecting shaft (8), a fan ring (9), a fan ring (10), a stopper (11) and a half ring (12); The fan ring 1 (9) and the fan ring 2 (10) are arranged symmetrically at intervals; Sector ring 1 (9) and sector ring 2 (10) are connected to both ends of the half ring (12) via connecting shafts (8) respectively; The fan ring 1 (9) and the fan ring 2 (10) are respectively hinged to the connecting shaft (8), and a limiter (11) is provided below the connection between the fan ring 1 (9) and the connecting shaft (8) and below the connection between the fan ring 2 (10) and the connecting shaft (8); The buckle (5) further comprises a spring device (14); The spring device (14) is arranged outside the connecting shaft (8) and is connected to the first sector ring (9) and the second sector ring (10) respectively.

2. The device for handling drill rod breakage accidents in a hole according to claim 1, characterized in that: The upper end of the connecting rod (4) is connected to the lower end of the fixing device (2), and the lower end is connected to the upper end of the ring buckle (5) and is arranged away from the open end of the ring buckle (5).

3. The device for handling drill rod breakage accidents in a hole according to claim 2, characterized in that: The connecting rod (4) is fixed to the middle of the upper end of the half ring (12); The diameter of the broken drill rod (7) is larger than the minimum distance between the fan ring 1 (9) and the fan ring 2 (10), and smaller than the minimum inner diameter of the ring buckle (5).

4. The method for using the device for handling drill rod breakage accidents in a hole according to any one of claims 1 to 3, characterized in that: The threaded opening on the female cone (3) is connected to the salvage drill rod (1) and the drilling rig; the power generated by the drilling rig is transmitted to the device for handling drill rod breakage accidents in the hole through the salvage drill rod; The specific steps include: Step 1: During use, the device for handling drill rod breakage accidents in a hole is transported to the location where the broken drill rod is located by salvaging the drill rod (1); Step 2: The salvaged drill rod (1) continues to move downward, and the fan ring (9) and the fan ring (10) touch the broken drill rod (7) and then open upward until the broken drill rod (7) enters the ring buckle (5), and the fan ring (9) and the fan ring (10) are restored to their original positions by the elastic force of the spring device (14) at the connecting shaft; Step 3: Pull up the salvaged drill pipe (1). The fan ring 1 (9) and the fan ring 2 (10) cannot move downward due to the restriction of the limiter (11). The broken drill pipe (7) is straightened by the pulling force of the ring buckle straightening device (15). Step 4: After the broken drill rod (7) is straightened, the salvage drill rod (1) is moved downward, and the upper end of the broken drill rod (7) enters the mother cone (3). The drilling rig drives the mother cone (3) to rotate and makes a buckle on the broken drill rod (7), so that the broken drill rod (7) is connected to the mother cone (3). Then, the drilling rig is used to pull the salvage drill rod (1) upward to complete the salvage work of the broken drill rod (7).

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