Rotary hole forming device

Abstract

The utility model discloses a rotary hole forming device, which relates to the technical field of petroleum geological exploration and comprises a drilling tool assembly, a power head and a power supply, the drilling tool assembly comprises a coring drilling tool, a hollow cavity is formed in the coring drilling tool, a spiral structure and a positioning structure are arranged at the end of the coring drilling tool, and the positioning structure is used for positioning the hole forming position; the power head is connected with the coring drilling tool, and the power head is used for driving the coring drilling tool to rotate so that the spiral structure can cut up a soil layer; the power source is connected with the power head and used for supplying power to the power head. The rotary hole forming device is simple in structure, light and portable, hole digging can be achieved in a rotary soil taking mode, the drilling efficiency is improved, and the technical threshold and the labor intensity of operators are reduced.

Description

Technical Field

[0001] This application relates to the technical field of oil geological exploration, and more particularly, to a rotary hole-forming device. Background Art

[0002] In the loess tableland area, the mountain roads are rough and gully-crossed, and the stratum types are diverse. Limited by the topography and geomorphology, in the exploration and drilling in this area, vibroseis and other mechanical equipment cannot be widely used; while using a manually carried drilling rig, the total mass is large, the relocation is difficult, and the drilling cost is high, so it is generally applied to areas where a Luoyang shovel cannot punch holes, such as gravel layers and oolitic limestone. In the vast loess area, manual drilling with a Luoyang shovel is mainly used for well shooting construction. Manual drilling with a Luoyang shovel is a single-person operation. The operator carries the Luoyang shovel head and the shovel handle on the back and can reach any well position. The operator connects the Luoyang shovel head and the shovel handle in sequence, holds the shovel handle with both hands and vertically impacts the soil layer. After the Luoyang shovel head is filled with soil, it is taken out to dump the soil, and the operation is repeated until the target well depth, generally about 20 meters, and then transferred to the next well position to continue digging holes.

[0003] Drilling with a Luoyang shovel is flexible and mobile, but it requires high skills and has high requirements for operators. At the same time, the labor intensity of forming holes in this way is relatively large, and long-term engagement in this work is likely to damage the operator's body. Summary of the Utility Model

[0004] The purpose of this application is to provide a rotary hole-forming device, aiming to solve the problem of relatively large labor intensity in hole digging with a traditional Luoyang shovel in the prior art.

[0005] This application provides a rotary hole-forming device, including:

[0006] A drill string assembly, a power head and a power supply;

[0007] The drill string assembly includes a core drill. A hollow cavity is formed inside the core drill. A spiral structure and a positioning structure are provided at the end of the core drill. The positioning structure is used to position the hole-forming position;

[0008] The power head is connected to the core drill, and the power head is used to drive the core drill to rotate so as to cut the soil layer with the spiral structure;

[0009] The power supply is connected to the power head and is used to supply power to the power head.

[0010] Through the above technical solution, drilling is realized by the method of driving the core drill to rotate to take soil with the power head, replacing the traditional vertical impact hole-forming method of the Luoyang shovel. The operation is simple, the drilling efficiency is improved, and the technical threshold and labor intensity of the operator are reduced.

[0011] Optionally, the spiral structure includes two spiral blades, and the rotation axes of the two spiral blades are collinear with the axis of the core drill; one end of each spiral blade is connected to the core drill, and a blade is installed at the other end of each spiral blade.

[0012] Through the above technical solution, the blade is fixed at the end of the spiral blade, which is convenient for quickly cutting the soil layer when rotating into the soil and improves the drilling efficiency.

[0013] Optionally, along the radial direction of the core drill, the outer edge of the blade extends beyond the outer wall of the core drill.

[0014] Through the above technical solution, the outer edge of the blade extends beyond the outer wall of the core drill, so that the cutting diameter of the blade in the circumferential direction is slightly larger than the outer diameter of the core drill, ensuring the cutting range and efficiency and the penetration rate.

[0015] Optionally, the positioning structure includes a centering drill bit. One end of the centering drill bit is arranged at the rotation axis of the two spiral blades, and the other end of the centering drill bit extends along the axial direction of the core drill towards the end away from the power head.

[0016] Through the above technical solution, the centering drill bit can accurately locate the position of the drill hole. At the same time, during the drilling process, it can guide the drilling direction and avoid the direction deviation from the axis, which affects the hole forming quality.

[0017] Optionally, through holes are axially formed in the side wall of the core drill along the axial direction of the core drill.

[0018] Through the above technical solution, by forming the through holes, the soil chips generated around the core drill during the drilling process can smoothly enter the inner cavity of the core drill, reducing the accumulation of soil chips at the bottom of the well and facilitating the cleaning and dumping of soil.

[0019] Optionally, the number of the through holes is set to two, and the two through holes are symmetrically distributed on both sides of the core drill.

[0020] Through the above technical solution, by forming through holes on both sides of the side wall of the core drill, the efficiency of the surrounding soil chips entering the inner cavity of the core drill can be further improved.

[0021] Optionally, the drill assembly further includes a drill pipe, and the drill pipe is detachably connected to the core drill.

[0022] Through the above technical solution, by connecting the drill pipe, the total length of the drill assembly can be increased to better meet the requirements of the drilling depth.

[0023] Optionally, the rotary hole forming device further includes a handle, and a clamping groove is arranged in the middle of the handle; a positioning convex block is arranged on the drill pipe, and the clamping groove is in clamping fit with the positioning convex block.

[0024] Through the above technical solution, the connection between the handle and the drill pipe is realized through the snap-fit of the snap groove and the positioning bump. By operating the handle, the installation or disassembly of the drill pipe can be assisted, which helps to improve the operation convenience.

[0025] Optionally, a handle is provided on the power head, and an operation button is provided on the handle. The operation button is used to control the start or stop of the power head.

[0026] Through the above technical solution, by providing a handle, it is convenient for the operator to hold and perform drilling operations. The operation button is provided on the handle, which is convenient for the worker to control the start and stop of the drilling operation.

[0027] Optionally, the power supply includes a lithium battery.

[0028] Through the above technical solution, using a lithium battery as the power supply of the power head can provide good battery life for the power head. At the same time, the lithium battery is small in size and light in weight, which is convenient to carry.

[0029] Beneficial effects:

[0030] 1. The present application provides a rotary hole-forming device, which includes a drill assembly, a power head and a power supply; the drill assembly includes a core drill, a hollow cavity is formed inside the core drill, a spiral structure and a positioning structure are provided at the end of the core drill, and the positioning structure is used to position the position of the hole; the power head is connected to the core drill, and the power head is used to drive the core drill to rotate so as to cut the soil layer with the spiral structure; the power supply is connected to the power head and is used to supply power to the power head; the rotary hole-forming device described in the present application uses the power head to drive the core drill to rotate, and realizes hole digging in a way of rotating and taking soil, replacing the traditional vertical impact hole-forming method of a Luoyang shovel. It not only improves the drilling efficiency, but also reduces the technical threshold and labor intensity of the operator. Ordinary workers can perform drilling operations after simple training, and are not restricted by personnel conditions.

[0031] 2. In the rotary hole-forming device described in the present application, a through hole is axially provided on the side wall of the core drill along the axial direction of the core drill. By providing the through hole, the soil chips generated around the core drill during the drilling process can smoothly enter the inner cavity of the core drill, reducing the accumulation of soil chips at the bottom of the well, facilitating the cleaning and dumping of soil, and improving the efficiency of the drilling operation. Description of the drawings

[0032] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the description of the embodiments of the present application will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of a rotary hole-forming device proposed in an embodiment of the present application;

[0034] Figure 2 is a schematic connection diagram of a power head and a power supply in a rotary hole-forming device proposed in an embodiment of the present application;

[0035] Figure 3 is a schematic structural diagram of a core drill in a rotary hole-forming device proposed in an embodiment of the present application;

[0036] Figure 4 is a schematic structural diagram of a drill pipe in a rotary hole-forming device proposed in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Power head; 2. Drill tool assembly; 3. Power supply; 4. Handle; 5. Core drill; 6. Through hole; 7. Spiral blade; 8. Blade; 9. Centering drill bit; 10. Drill pipe; 11. Positioning convex block. Detailed implementation manners

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the protection scope of the present application.

[0040] In related technologies, in the vast loess areas, manual drilling with a Luoyang shovel is mainly used for well shooting construction. Manual drilling with a Luoyang shovel is a single-person operation. The operator carries the Luoyang shovel head and the shovel handle and can reach any well position. The operator connects the Luoyang shovel head and the shovel handle in sequence, holds the shovel handle with both hands and vertically impacts the soil layer. After the Luoyang shovel head is filled with soil, it is taken out to pour the soil, and the operation is repeated until the target well depth, generally about 20 meters, and then transferred to the next well position to continue digging the hole.

[0041] The use of a Luoyang shovel for drilling is flexible and mobile, but it requires high skills and places high demands on operators. At the same time, the labor intensity of hole formation by this method is relatively high, and long-term engagement in this work is likely to damage the operators' bodies. Currently, the number of drilling workers is limited and is decreasing year by year due to injuries and age growth. The limitation of personnel conditions has become a bottleneck problem in well shooting construction in the loess tableland and loess strata. Therefore, developing a portable and easy-to-operate hole-forming device to reduce labor intensity and lower the operation threshold is an urgent problem to be solved in oil exploration drilling in the loess tableland and loess strata.

[0042] In view of this, an embodiment of the present application proposes a rotary hole-forming device.

[0043] See Figure 1 , the present application provides a rotary hole-forming device, including a drill string assembly 2, a power head 1, and a power supply 3; the drill string assembly 2 includes a core drill 5, a hollow cavity is formed inside the core drill 5, a spiral structure and a positioning structure are provided at the end of the core drill 5, and the positioning structure is used to position the position of the hole formation; the power head 1 is connected to the core drill 5, and the power head 1 is used to drive the core drill 5 to rotate so that the spiral structure cuts the soil layer; the power supply 3 is connected to the power head 1 and is used to supply power to the power head 1.

[0044] Specifically, see Figure 1 , the drill string assembly 2 and the power head 1 are coaxially connected, the power supply 3 is connected to the power head 1 and can supply power to the power head 1. When the power head 1 starts to work, it can drive the drill string assembly 2 to rotate around its axis. The drill string assembly 2 includes a core drill 5, the core drill 5 is a circular shaft structure, and a hollow cavity is formed inside it, which can accommodate the soil chips entering during drilling. At the end of the core drill 5 far from the power head 1, that is Figure 1 as shown in the lower end, a spiral structure and a positioning structure are provided. The spiral structure can enter and cut the soil layer in a rotating manner when the core drill 5 rotates to realize drilling. The positioning structure can position the position of the drill hole and can play a guiding role during the drilling process to prevent deviation and ensure the accuracy of the drill hole position.

[0045] Through the above settings, the embodiment of the present application realizes hole digging in a way of rotating and taking soil, replacing the traditional vertical impact hole-forming method of the Luoyang shovel. It not only improves the drilling efficiency, but also reduces the technical threshold and labor intensity of the operators. Ordinary workers can carry out drilling operations after simple training, without being restricted by personnel conditions.

[0046] Optionally, the spiral structure includes two spiral blades 7, and the rotation axes of the two spiral blades 7 are collinear with the axis of the core drill 5; one end of the spiral blade 7 is connected to the core drill 5, and a blade 8 is installed at the other end of the spiral blade 7.

[0047] Specifically, refer to Figure 3 . In this embodiment, the spiral structure includes two spiral blades 7. The rotation axes of the two spiral blades 7 are collinear with the axis of the core drill 5. One end of the spiral blade 7 is connected to the inner cavity of the core drill 5. Specifically, it can be connected to the inner wall of the core drill 5 by welding. The other end of the spiral blade 7 extends out of the core drill 5 in a direction away from the power head 1, and an alloy blade 8 is fixedly installed at the end, so as to quickly cut the soil layer when rotating into the soil and improve the drilling efficiency.

[0048] Optionally, along the radial direction of the core drill 5, the outer edge of the blade 8 extends beyond the

[0049] outer wall of the core drill 5.

[0050] Furthermore, as Figure 3 shown, along the radial direction of the core drill 5, the outer edge of the blade 8 slightly extends beyond the outer wall of the core drill 5. In this way, when the blade 8 rotates with the spiral blade 7, the cutting diameter of the blade 8 in the circumferential direction is slightly larger than the outer diameter of the core drill 5, ensuring the cutting range and efficiency, enabling the blade 8 to quickly cut the soil layer, and at the same time, the cut soil chips are easily rotated into the inner cavity of the core drill 5 along with the spiral blade 7. As an example, in this embodiment, the outer diameter of the core drill 5 is about 65 mm, and the cutting diameter of the blade 8 is about 70 mm.

[0051] Optionally, the positioning structure includes a centering drill bit 9. One end of the centering drill bit 9 is arranged at the rotation axis of the two spiral blades 7, and the other end of the centering drill bit 9 extends along the axial direction of the core drill 5 towards the end away from the power head 1.

[0052] Refer to Figure 3 . In this embodiment, the positioning structure includes a centering drill bit 9. The centering drill bit 9 is a shaft structure. One end of the centering drill bit 9 is fixedly connected to the center of the two spiral blades 7 by welding, and the other end extends in a direction away from the power head 1. The centering drill bit 9 is coaxial with the core drill 5. Before starting drilling, the centering drill bit 9 can accurately locate the drilling position. During the drilling process, the centering drill bit 9 can guide the drilling direction and avoid affecting the hole-forming quality due to the deviation of the direction from the axis.

[0053] Optionally, through holes 6 are axially formed in the side wall of the core drill 5 along the axial direction of the core drill 5.

[0054] Specifically, through holes 6 are also formed in the side wall of the core drill 5, as Figure 3As shown, the through hole 6 extends along the axial direction of the core drill 5. By opening the through hole 6, the soil chips generated around the core drill 5 during the drilling process can smoothly enter the inner cavity of the core drill 5, reducing the accumulation of soil chips at the bottom of the well and facilitating the cleaning and dumping of soil.

[0055] Optionally, the number of the through holes 6 is set to two, and the two through holes 6 are symmetrically distributed on both sides of the core drill 5.

[0056] Preferably, in this embodiment, two through holes 6 are provided and symmetrically distributed on both sides of the core drill 5, which can further improve the efficiency of the soil chips entering the inner cavity of the core drill 5.

[0057] In practical applications, the specific number and size of the through holes 6 can be flexibly set according to the size of the core drill 5.

[0058] Optionally, the drill string assembly 2 further includes a drill pipe 10, and the drill pipe 10 is detachably connected to the core drill

[0059] 5.

[0060] Furthermore, the drill string assembly 2 further includes a drill pipe 10, and the drill pipe 10 is detachably connected to one end of the core drill 5 away from the spiral structure. In this embodiment, the drill pipe 10 and the core drill 5 are detachably connected by means of a threaded fit. By connecting the drill pipe 10, the total length of the drill string assembly 2 can be increased to adapt to the drilling depth. Preferably, the drill pipe 10 can be made of an aluminum alloy pipe, which has high strength and light weight and is convenient for lifting and handling.

[0061] In practical applications, the number of drill pipes 10 can be configured as multiple according to the needs of the digging depth, and multiple drill pipes 10 can be connected in a detachable manner.

[0062] Optionally, the rotary hole-forming device further includes a handle, and a clamping groove is provided in the middle of the handle; a positioning convex block 11 is provided on the drill pipe 10, and the clamping groove is in clamping fit with the positioning convex block 11.

[0063] Furthermore, to facilitate the replacement of the drill pipe 10, the rotary hole-forming device described in the embodiment of the present application is also provided with a handle. A clamping groove is provided in the middle of the handle, and positioning convex blocks 11 adapted to the clamping groove are provided at the two ends of the drill pipe 10. When the drill pipe 10 needs to be replaced, the handle can be connected to the drill pipe 10 through the clamping fit between the clamping groove and the positioning convex block 11, and the drill pipe 10 can be driven to rotate through the handle to assist in the installation or disassembly of the drill pipe 10, improving the operation convenience.

[0064] Optionally, a handle 4 is provided on the power head 1, and operation buttons are provided on the handle 4, and the operation buttons are used to control the start or stop of the power head 1.

[0065] See Figure 2 Figure 2 , a handle 4 is also arranged on the power head 1, which is convenient for the operator to hold by hand for drilling operations. Operation buttons are arranged on the handle 4, and the power head 1 can be controlled to start or stop through the operation buttons, so as to control the start or stop of drilling.

[0066] Optionally, the power supply 3 includes a lithium battery.

[0067] In this embodiment, the power supply 3 adopts a lithium battery to provide endurance for the power head 1. The lithium battery has a high energy density, is light in weight, relatively small in volume, convenient to carry, and is environmentally friendly and does not produce toxic substances, which is very suitable for the oil exploration drilling scenario in the loess stratum.

[0068] The working process of drilling using the rotary hole-forming device provided by the embodiment of the present application is as follows:

[0069] Before drilling, the operator carries the lithium battery on the back, connects the power head 1 with the core drill 5, and positions the centering drill bit 9 at the hole-forming position;

[0070] During drilling, hold the handle 4 on the power head 1 with both hands, operate the operation buttons on the handle 4 to start the power head 1 to rotate the core drill 5. The centering drill bit 9 guides the drilling direction, and the blade 8 enters the soil and cuts the soil layer as the spiral blade 7 rotates. The scraped soil chips enter the inner cavity of the Luoyang core drill 5 as the spiral blade 7 rotates; as the drilling footage increases, the inner cavity of the core drill 5 is filled with loess, the core drill 5 is lifted out of the hole to dump the soil, and then the core drill 5 is connected to the drill pipe 10, and drilling and soil taking are carried out again, and so on in a cycle until the target well depth is reached;

[0071] After drilling is completed, the drill pipe 10 is removed in sequence, the core drill 5 is taken out, and the operation is completed.

[0072] The rotary hole-forming device provided by the embodiment of the present application realizes drilling by driving the core drill 5 to rotate to take soil with the power head 1, replacing the vertical impact hole-forming method of the traditional Luoyang shovel. The operation is simple, the drilling efficiency is improved, the technical threshold and labor intensity of the operator are reduced, and ordinary workers can carry out drilling operations after simple training, without being restricted by personnel conditions; at the same time, the device is light in weight, small in size, and simple in structure, and can be quickly relocated by one person to reach any well position, without being restricted by terrain conditions; in addition, there is no dust during drilling, which is environmentally friendly and helps to improve the working environment of drillers.

[0073] It should be noted that the various embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts among the various embodiments can be referred to each other.

[0074] It should also be noted that in this text, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations, nor can they be construed as indicating or implying relative importance. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or terminal device comprising the element.

[0075] The technical solutions provided by the present application have been introduced in detail above. Specific examples are used herein to illustrate the principles and implementation manners of the present application. The description of the above embodiments is only for helping to understand the present application, and the content of this specification should not be construed as a limitation to the present application. At the same time, for those of ordinary skill in the art, based on the present application, there will be various forms of changes in the specific implementation manners and application scopes. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A rotary hole-forming device, characterized in that, Comprising: A drill string assembly, a power head, and a power source; The drill string assembly includes a core drill. A hollow cavity is formed inside the core drill. A spiral structure and a positioning structure are provided at the end of the core drill. The positioning structure is used to position the location of the hole formation. The power head is connected to the core drill. The power head is used to drive the core drill to rotate so that the spiral structure cuts up the soil layer. The power source is connected to the power head and is used to supply power to the power head.

2. The rotary hole-forming device according to claim 1, wherein: The spiral structure includes two spiral blades. The rotation axes of the two spiral blades are collinear with the axis of the core drill. One end of the spiral blade is connected to the core drill, and a blade is installed at the other end of the spiral blade.

3. The rotary hole-forming device according to claim 2, wherein: In the radial direction of the core drill, the outer edge of the blade extends beyond the outer wall of the core drill.

4. The rotary hole-forming device according to claim 2, wherein: The positioning structure includes a centering drill bit. One end of the centering drill bit is provided at the rotation axis of the two spiral blades, and the other end of the centering drill bit extends axially along the core drill away from the power head.

5. The rotary hole-forming device according to claim 1, wherein: Through holes are axially formed on the side wall of the core drill along the core drill.

6. The rotary hole-forming device according to claim 5, wherein: The number of the through holes is set to two, and the two through holes are symmetrically distributed on both sides of the core drill.

7. The rotary hole-forming device according to claim 1, wherein: The drill string assembly further includes a drill pipe, and the drill pipe is detachably connected to the core drill.

8. The rotary hole-forming device according to claim 7, wherein: The rotary hole-forming device further includes a handle. A clamping groove is provided in the middle of the handle; a positioning protrusion is provided on the drill pipe, and the clamping groove is in clamping fit with the positioning protrusion.

9. The rotary hole-forming device according to claim 1, wherein: A handle is provided on the power head. Operation buttons are provided on the handle, and the operation buttons are used to control the start or stop of the power head.

10. The rotary hole-forming device according to claim 1, wherein: The power source includes a lithium battery.

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