Screw drilling tool for petroleum drilling

Abstract

The invention belongs to the technical field of petroleum drilling tools, and particularly relates to a petroleum drilling screw drilling tool which comprises a containing cavity, a reaming box is fixedly mounted at the top of the containing cavity, a shaft box is fixedly mounted at the top of the containing cavity, a hydraulic box is arranged at the top of the shaft box, a frame plate is fixedly mounted at the top of the hydraulic box, and a screw drill bit is arranged in the containing cavity. A drill driving assembly is arranged in the shaft box; the reaming cutters can slowly extend out of the inner wall of the reaming box by pushing the reaming cutters to slide on the limiting rods, and when the extending distance of the reaming cutters is the same as the construction hole diameter, the motor can drive the reaming cutters to rotate through the containing cavity when the screw drill bit is driven to rotate, so that the hole diameter drilled by the screw drill bit is subjected to reaming operation; the reaming cutters pull the reset springs on the limiting rods to move, the positions of the reaming cutters can be adjusted in the reaming box, and therefore the reaming cutters can conduct reaming operation of different sizes on drilled holes.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling tools, in particular to a screw drilling tool for oil drilling. Background Art

[0002] Screw drill bits are commonly used downhole power drilling tools in oil drilling. They feature low speed, high torque, and flexible directional control, making them widely used in directional wells, horizontal wells, and wells with complex structures. Due to their high efficiency, flexibility, and precision, screw drill bits have become an indispensable core piece of equipment in drilling projects, playing a particularly crucial role in unconventional oil and gas and deepwater oil and gas development.

[0003] A patent application with publication number CN112065266A discloses a screw drill tool for oil drilling. The tool can limit its own position through a support frame, an adjustable auxiliary support assembly, a support connecting rod and a limit frame. The overall structure of the equipment is simple, the cost is low, and it is easy to operate, which greatly improves the limiting support strength of the screw drill tool.

[0004] In the current existing technology, when using screw drilling tools to drill holes in oil fields, since the diameter of the oil field holes is the same as the diameter of the drilling tools, the holes need to be re-enlarged during the subsequent construction process to ensure that the diameter of the holes meets the construction diameter of the subsequent construction operations. This drilling method not only requires the rearrangement of instruments during the construction process but also requires a certain amount of construction manpower, which is relatively troublesome.

[0005] To this end, the present invention provides a screw drill tool for oil drilling. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the screw drill tool for oil drilling of the present invention comprises a housing, a reaming box is fixedly installed at the bottom of the housing, a shaft box is fixedly installed at the top of the housing, a hydraulic box is provided on the top of the shaft box, a frame is fixedly installed on the top of the hydraulic box, a screw drill bit is provided inside the housing, a drill driving assembly is provided inside the shaft box, the drill driving assembly is used to drive the screw drill bit to drill a hole in the oil field soil layer, a reaming assembly is provided inside the reaming box, the reaming assembly includes a reaming cutter, and the reaming assembly is used to drive the reaming cutter to reaming the drill hole; By arranging a hydraulic mechanism in the hydraulic box, the hydraulic mechanism can drive the screw drill bit to move down for drilling operations. When drilling operations are needed in the oil field, first, a support frame is installed at the bottom of the frame plate, and the device is placed just above the position where the hole needs to be drilled. When the placement is completed, the screw drill bit is driven to rotate by controlling the rotation of the drill drive assembly, and the hydraulic mechanism is used to drive the screw drill bit to move downward, so that the screw drill bit can drill the oil field soil layer. At the same time of the drilling operation, the auxiliary drill assembly in the reaming box cooperates with the screw drill bit to drill the oil field soil layer, thereby speeding up the drilling efficiency of the screw drill bit on the soil layer. When the two are operating on the oil field soil layer, the reaming assembly drives the reaming cutter to reame the hole, so that the hole diameter drilled by the screw drill bit meets the construction hole diameter during construction, thereby avoiding the need to re-reame the hole due to the discrepancy between the drill hole diameter and the construction diameter in the subsequent construction process, which wastes time and also consumes a certain amount of manpower, and is more conducive to the construction operation of oil field drilling.

[0008] Preferably, the drill driving assembly includes a motor, a shift disk is provided at the bottom of the hydraulic box, the motor is fixedly mounted on the bottom of the shift disk, the external rotation of the screw drill bit is connected to the drill sleeve, and the output end of the motor is fixedly mounted with a connecting rod, one end of the connecting rod passes through the inner wall of the drill sleeve and is fixedly connected to the top of the screw drill bit. When the device is installed, the motor is driven to rotate, and the motor can drive the screw drill bit to rotate through the connecting rod. When the screw drill bit rotates, the hydraulic mechanism in the hydraulic box drives the device to move downward through the shift disk, so that the hydraulic mechanism drives the screw drill bit to move downward, and cooperates with the motor to drive the screw drill bit to rotate, so that the screw drill bit can drill holes in the oil field soil layer, thereby driving the screw drill bit to rotate.

[0009] The top of the shaft box is rotatably connected to the bottom of the shift disk. When the motor drives the connecting rod to rotate, the motor also drives the mother wheel to rotate. When the mother wheel rotates, the mother wheel drives the toothed disc to rotate in the opposite direction through the multiple child wheels. The toothed disc will drive the expansion box to rotate in the opposite direction of the rotation direction of the screw drill bit through the cavity, so that when the screw drill bit rotates to drill the soil layer, the auxiliary drill assembly rotates in the opposite direction of the rotation of the screw drill bit, so that the auxiliary drill assembly can better cooperate with the screw drill bit to perform drilling operations, thereby driving the auxiliary drill assembly to rotate in the opposite direction to cooperate with the screw drill bit to drill holes.

[0010] Preferably, the reaming assembly further comprises a limiting rod, and there are multiple limiting rods and reaming cutters, one end of each of the limiting rods is fixedly connected to the outer wall of the receiving cavity, and the inner walls of the multiple reaming cutters are slidably connected to the outer walls of the multiple limiting rods respectively, and a reset spring is provided between one side of each of the multiple reaming cutters and the outer wall of the receiving cavity, and the outer walls of the multiple reaming cutters are slidably connected to the inner wall of the reaming box. When the screw drill bit rotates to drill the soil layer, the reaming cutter is pushed to move, and the reaming cutter pulls the reset spring to slide on the limiting rod, and the reaming cutter moves from the inner wall of the reaming box. Slowly extend it. When the extended distance of multiple reaming knives is the same as the construction hole diameter, at this time, stop pushing the reaming knives to move. When the screw drill bit is driven to rotate by the motor, the motor drives the receiving cavity to rotate. The motor can drive multiple reaming knives to rotate through the receiving cavity, thereby reaming the hole diameter drilled by the screw drill bit, and playing the role of reaming the drill hole diameter. The reaming knife pulls the reset spring on the limit rod to move, and the reaming knife can be adjusted in the reaming box, so that multiple reaming knives can reame holes of different sizes.

[0011] Preferably, the outer walls of the multiple reaming knives are symmetrically fixed with tooth seats, the inner walls of the multiple tooth seats are fixedly installed with push rods, the inner wall of the cavity is slidably connected with multiple sliding rods, the outer walls of the multiple sliding rods are fixedly installed with shaft rods, and one end of the multiple push rods is hinged to the outer walls of the multiple shaft rods in pairs. When the position of the reaming knife needs to be adjusted, the shaft rod can be pushed downward, and the slide rod can move downward in the cavity. Through the hinged setting between the push rod and the shaft rod, when the shaft rod moves downward, the shaft rod can push the push rod to hinge and rotate on the outer wall of the shaft rod, and the push rod can push the tooth seat to move, so that the reaming knife moves outward in the reaming box, thereby determining the diameter of the hole to be reamed, which plays a role in pushing the reaming knife to move and adjust its position.

[0012] Preferably, a plurality of hydraulic rods are symmetrically fixedly installed on the inner wall of the reaming box, and a pressure plate is fixedly installed on the output ends of the plurality of hydraulic rods. The inner wall of the pressure plate is slidably connected to the outer wall of the cavity, and the tops of the plurality of shaft rods are fixedly connected to the bottom of the pressure plate. When the position of the reaming knife needs to be adjusted, the operation is performed by controlling the hydraulic rods, and the hydraulic rods will drive the pressure plate to slide downward on the outer wall of the cavity. When the pressure plate slides down, the pressure plate will push the shaft rod to move downward, so that the shaft rod pushes the reaming knife to move through the push rod, thereby providing power for pushing the reaming knife to move.

[0013] Preferably, an arc disk is fixedly installed on the bottom of the reaming box, and a plurality of rotary cutters are fixedly installed on the outer wall of the arc disk. When the motor drives the screw drill bit to rotate, the motor will drive the cavity to rotate in the opposite direction, and the cavity will drive the arc disk to rotate through the reaming box. The arc disk will drive the plurality of rotary cutters to scrape the soil layer, so that when the screw drill bit drills the soil layer, the arc disk drives the rotary cutters to further expand the drilled hole, which is convenient for the subsequent reaming cutter to expand the hole diameter, thereby playing the role of coarse expansion of the hole diameter.

[0014] Preferably, the auxiliary drill assembly includes auxiliary cutters, and there are multiple auxiliary cutters. The outer walls of the multiple auxiliary cutters are slidably connected to the inner walls of the multiple reaming cutters respectively, the blade ends of the multiple auxiliary cutters are flush with the drill bit position of the screw drill bit, and the multiple auxiliary cutters are arranged in a circular array around the screw drill bit, and the outer walls of the multiple auxiliary cutters are slidably connected to the inner wall of the cavity. When the motor drives the screw drill bit to drill the soil layer, the cavity will be driven by it to rotate in the opposite direction, and the cavity will drive the multiple auxiliary cutters to rotate in the opposite direction at one end of the screw drill bit, so that when the screw drill bit drives the drill bit to drill the soil layer, the multiple auxiliary cutters rotate in the opposite direction on the outer wall of the drill bit, thereby cooperating with the screw drill bit to perform rough drilling operations on the soil layer. When the screw drill bit rotates, the auxiliary cutters rotate in the opposite direction outside the screw drill bit, so that when the two are drilling holes in the relative soil layer, they can better break the soil layer, thereby cooperating with the screw drill bit to drill holes in the soil layer.

[0015] Preferably, the inner wall of the reaming knife is provided with a slider, which is placed on one side of the inner wall of the reaming knife, and a round rod is fixedly installed on one side of the auxiliary knife top, and the outer wall of the round rod is slidably connected to the inner wall of the slider, and a pressure spring is provided between one side of the slider and one side of the auxiliary knife top, and a positioning rod is fixedly installed on the other side of the auxiliary knife top, and the outer wall of the positioning rod is slidably connected to the inner wall of the cavity, and the top of one end of the positioning rod is provided with an inclined sliding surface, and the outer wall of the drill sleeve can be slidably connected to the outer wall of the positioning rod. During installation, the drill sleeve is placed in the cavity from the top of the cavity, and when the drill sleeve moves down into the cavity, the drill sleeve The outer wall will push the positioning rod to move backward, and the positioning rod will drive the auxiliary knife to squeeze the pressure spring in the reaming knife to slide. When the drill bit at the bottom end of the screw drill bit moves to the position flush with the auxiliary knife, at this time, stop moving the drill sleeve, and multiple auxiliary knives will be pushed by the drill sleeve and around the drill bit, thereby determining the position between the auxiliary knife and the drill bit. By setting it up in this way, the position between the auxiliary knife and the drill bit can always be consistent when the device is installed with drill sleeves and screw drill bits of various diameters, which can better cooperate with the drill bit to break the soil layer and play a role in adjusting the position of the auxiliary knife.

[0016] The toothed gear of the two gears is meshed with the teeth on the two gears on the gears respectively.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention relates to a screw drill tool for oil drilling. By pushing the reaming cutter to slide on the limit rod, the reaming cutter will slowly extend from the inner wall of the reaming box. When the extension distance of multiple reaming cutters is the same as the construction hole diameter, when the screw drill bit is driven to rotate by the motor, the motor can drive the multiple reaming cutters to rotate through the receiving cavity, thereby reaming the hole diameter drilled by the screw drill bit. By pulling the return spring on the limit rod to move the reaming cutter, the position of the reaming cutter can be adjusted in the reaming box, so that the multiple reaming cutters can be used to reame holes of different sizes.

[0018] 2. The present invention relates to a screw drill tool for oil drilling. When the motor drives the screw drill bit to rotate, the motor will drive the cavity to rotate in the opposite direction. The cavity will drive the arc disk to rotate through the reaming box. The arc disk will drive multiple rotary cutters to scrape the soil layer. As a result, when the screw drill bit is drilling the soil layer, the arc disk drives the rotary cutters to further expand the drilled hole, making it easier for the subsequent reaming cutter to expand the hole diameter, thereby achieving the effect of coarse expansion of the hole diameter.

[0019] 3. The screw drill tool for oil drilling described in the present invention is that when the motor drives the screw drill bit to drill the soil layer, the cavity will be driven by it to rotate in the opposite direction, and the cavity will drive multiple auxiliary cutters to rotate in the opposite direction at one end of the screw drill bit, so that when the screw drill bit drives the drill bit to drill the soil layer, the multiple auxiliary cutters rotate in the opposite direction on the outer wall of the drill bit, thereby cooperating with the screw drill bit to perform rough drilling operations on the soil layer. When the screw drill bit rotates, the auxiliary cutters rotate in the opposite direction outside the screw drill bit, so that when the two are drilling relative soil layers, the soil layer can be better broken, thereby cooperating with the screw drill bit to drill holes in the soil layer.

[0020] 4. The screw drill tool for oil drilling described in the present invention pushes the positioning rod backward through the outer wall of the drill sleeve, and the positioning rod will drive the auxiliary cutter to squeeze the pressure spring in the reaming cutter to slide. When the drill bit at the bottom end of the screw drill bit moves to a position flush with the auxiliary cutter, at this time, multiple auxiliary cutters will be pushed by the drill sleeve and the surrounding area of ​​the drill bit, thereby determining the position between the auxiliary cutter and the drill bit. By setting it up in this way, when the device is installed with drill sleeves and screw drill bits of various sizes and diameters, the position between the auxiliary cutter and the drill bit can always remain consistent, which can better cooperate with the drill bit to perform soil breaking operations.

[0021] 5. The screw drill tool for oil drilling described in the present invention drives the gear to rotate when the tooth seat moves, and the gear will drive the gear rod to move in the opposite direction through the tooth meshing setting. The gear rod will push the auxiliary cutter to move through the pressure spring. Since one end of the positioning rod is restricted by the drill sleeve, the gear rod will squeeze the pressure spring to move toward the auxiliary cutter. On the one hand, it can ensure that when the reaming cutter moves, the auxiliary cutter will not change position due to the movement of the reaming cutter. On the other hand, a retaining extrusion force can be applied to the auxiliary cutter, so that the auxiliary cutter can be placed more firmly on the outside of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is an overall diagram of the present invention; Figure 2 It is the main figure of the present invention; Figure 3 It is a structural schematic diagram of the reaming cutter in the present invention; Figure 4 It is a structural schematic diagram of the sliding rod in the present invention; Figure 5 It is a structural schematic diagram of the arc disk in the present invention; Figure 6 It is a structural schematic diagram of the push rod in the present invention; Figure 7 It is a structural diagram of the positioning rod in the present invention; Figure 8 It is a structural schematic diagram of the toothed disc in the present invention; Figure 9 It is a structural schematic diagram of the connecting rod in the present invention.

[0024] In the figure: 1. cavity; 101. toothed disc; 2. reaming box; 201. arc disc; 202. rotary cutter; 3. hydraulic box; 301. shift disc; 4. shaft box; 401. motor; 402. sub-wheel; 403. mother wheel; 404. connecting rod; 5. frame plate; 6. drill sleeve; 601. screw drill bit; 7. hydraulic rod; 8. reaming cutter; 801. reset spring; 802. limit rod; 803. positioning rod; 804. tooth seat; 805. gear; 806. gear rod; 807. slide block; 808. pressure spring; 9. pressure plate; 901. shaft rod; 902. push rod; 903. slide bar; 10. auxiliary cutter. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figures 1 to 9 As shown, a screw drill tool for oil drilling according to an embodiment of the present invention includes a housing 1, a reaming box 2 is fixedly installed at the bottom of the housing 1, an axis box 4 is fixedly installed at the top of the housing 1, a hydraulic box 3 is provided on the top of the axis box 4, and a frame 5 is fixedly installed on the top of the hydraulic box 3. A screw drill bit 601 is provided inside the housing 1, a drill driving assembly is provided inside the axis box 4, and the drill driving assembly is used to drive the screw drill bit 601 to drill a hole in the oil field soil layer. A reaming assembly is provided inside the reaming box 2, and the reaming assembly includes a reaming cutter 8, and the reaming assembly is used to drive the reaming cutter 8 to reaming the drill hole. Since the diameter of the hole opened by the oil field drilling is the opening diameter of the drilling tool, it is necessary to re-expand the hole in the subsequent construction process to ensure that the diameter of the hole meets the construction diameter of the subsequent construction operation. This drilling method not only requires the rearrangement of the equipment during the construction process but also requires a certain amount of construction manpower; By setting a hydraulic mechanism in the hydraulic box 3, the hydraulic mechanism can drive the screw drill bit 601 to move down for drilling operations. When drilling operations are required in the oil field, first, a support frame is installed at the bottom of the frame plate 5, and the device is placed just above the position where the hole needs to be drilled. When the placement is completed, the screw drill bit 601 is driven to rotate by controlling the rotation of the drill drive assembly, and the screw drill bit 601 is driven to move down by the hydraulic mechanism. The screw drill bit 601 can then drill holes in the oil field soil layer. During the drilling operation, the hole in the expansion box 2 is The auxiliary drilling assembly cooperates with the screw drill bit 601 to drill the oil field soil layer, speeding up the drilling efficiency of the screw drill bit 601 on the soil layer. When the two are operating on the oil field soil layer, the reaming assembly drives the reaming knife 8 to reame the borehole, so that the hole diameter drilled by the screw drill bit 601 meets the construction hole diameter during construction, avoiding the need to re-reame the borehole during subsequent construction due to the discrepancy between the borehole diameter and the construction diameter, which wastes time and also consumes a certain amount of manpower, and is more conducive to the construction of oil field drilling.

[0027] like Figures 8 and 9 As shown, the driving drill assembly includes a motor 401, a shift plate 301 is provided at the bottom of the hydraulic box 3, the motor 401 is fixedly mounted on the bottom of the shift plate 301, the outer portion of the screw drill bit 601 is rotatably connected to the drill sleeve 6, and a connecting rod 404 is fixedly mounted on the output end of the motor 401, one end of the connecting rod 404 passes through the inner wall of the drill sleeve 6 and is fixedly connected to the top of the screw drill bit 601; When the device is installed, the motor 401 is driven to rotate, and the motor 401 can drive the screw drill bit 601 to rotate through the connecting rod 404. When the screw drill bit 601 rotates, the hydraulic mechanism in the hydraulic box 3 drives the device to move downward through the shift plate 301, so that the hydraulic mechanism drives the screw drill bit 601 to move downward, and cooperates with the motor 401 to drive the screw drill bit 601 to rotate, so that the screw drill bit 601 can drill holes in the oil field soil layer, which plays a role in driving the screw drill bit 601 to rotate. It should be noted here that a soil lifting mechanism is provided inside the drill sleeve 6. When the screw drill bit 601 drills the oil field soil layer, the soil lifting mechanism drives the soil drilled by the screw drill bit 601 to rise and discharge. Since this technology belongs to the existing technical solution, it is only explained in this solution and not represented.

[0028] like Figures 8 and 9 As shown, a mother wheel 403 is fixedly mounted on the outer wall of the connecting rod 404, and the outer wall of the mother wheel 403 is rotatably connected to the inner wall of the shaft box 4. A plurality of toothed discs 101 are rotatably connected to the bottom of the shift disk 301. The teeth on the plurality of toothed discs 101 can mesh with the teeth on the mother wheel 403. A toothed disc 101 is fixedly mounted on the inner wall of the shaft box 4. The teeth on the toothed disc 101 respectively mesh with the teeth on the plurality of sub-wheels 402. The top of the shaft box 4 is rotatably connected to the bottom of the shift disk 301. When the motor 401 drives the connecting rod 404 to rotate, the motor 401 also drives the mother wheel 403 to rotate. When the mother wheel 403 rotates, the mother wheel 403 drives the gear disc 101 to rotate in the opposite direction through multiple sub-wheels 402. The gear disc 101 will drive the reaming box 2 to rotate in the opposite direction of the rotation direction of the screw drill bit 601 through the cavity 1, so that when the screw drill bit 601 rotates to drill the soil layer, the auxiliary drill assembly rotates in the opposite direction of the rotation of the screw drill bit 601, so that the auxiliary drill assembly can better cooperate with the screw drill bit 601 to perform drilling operations, thereby driving the auxiliary drill assembly to rotate in the opposite direction to cooperate with the screw drill bit 601 to drill holes.

[0029] like Figures 4 to 6 As shown, the reaming assembly further includes a limiting rod 802, and there are multiple limiting rods 802 and reaming knives 8. One end of each of the limiting rods 802 is fixedly connected to the outer wall of the receiving cavity 1, and the inner walls of the multiple reaming knives 8 are respectively slidably connected to the outer walls of the multiple limiting rods 802. A return spring 801 is provided between one side of each of the multiple reaming knives 8 and the outer wall of the receiving cavity 1, and the outer walls of the multiple reaming knives 8 are slidably connected to the inner wall of the reaming box 2. When the screw drill bit 601 rotates to drill the soil layer, the reaming cutter 8 is pushed to move, and the reaming cutter 8 will pull the return spring 801 to slide on the limit rod 802, and the reaming cutter 8 will slowly extend from the inner wall of the reaming box 2. When the extended distance of multiple reaming cutters 8 is the same as the construction hole diameter, at this time, the reaming cutters 8 are stopped from being pushed to move. When the screw drill bit 601 is driven to rotate by the motor 401, the motor 401 drives the cavity 1 to rotate, and the motor 401 can drive multiple reaming cutters 8 to rotate through the cavity 1, thereby expanding the hole diameter drilled by the screw drill bit 601, and playing the role of expanding the borehole diameter. By pulling the return spring 801 on the limit rod 802 to move, the reaming cutter 8 can be adjusted in position in the reaming box 2, so that multiple reaming cutters 8 can expand holes of different sizes.

[0030] like Figures 4 to 6 As shown, the outer walls of the multiple reaming knives 8 are symmetrically fixed with tooth holders 804, the inner walls of the multiple tooth holders 804 are fixedly installed with push rods 902, the inner wall of the receiving cavity 1 is slidably connected with multiple sliding rods 903, the outer walls of the multiple sliding rods 903 are fixedly installed with shafts 901, and one end of the multiple push rods 902 is hinged to the outer walls of the multiple shafts 901 in pairs; When the position of the reaming knife 8 needs to be adjusted, the slide rod 903 can be moved downward in the cavity 1 by pushing the shaft 901 downward. Through the hinged setting between the push rod 902 and the shaft 901, when the shaft 901 moves downward, the shaft 901 can push the push rod 902 to hinge and rotate on the outer wall of the shaft 901, and the push rod 902 can push the tooth seat 804 to move, so that the reaming knife 8 moves outward in the reaming box 2, thereby determining the diameter of the hole to be reamed, which plays a role in pushing the reaming knife 8 to move and adjust its position.

[0031] like Figures 4 to 6 As shown, a plurality of hydraulic rods 7 are symmetrically fixedly installed on the inner wall of the expansion box 2, and a pressure plate 9 is fixedly installed on the output end of the plurality of hydraulic rods 7. The inner wall of the pressure plate 9 is slidably connected to the outer wall of the receiving cavity 1, and the tops of the plurality of shafts 901 are fixedly connected to the bottom of the pressure plate 9; When the position of the reaming knife 8 needs to be adjusted, the operation is performed by controlling the hydraulic rod 7, and the hydraulic rod 7 will drive the pressure plate 9 to slide downward on the outer wall of the cavity 1. When the pressure plate 9 slides down, the pressure plate 9 will push the shaft rod 901 to move downward, so that the shaft rod 901 pushes the reaming knife 8 to move through the push rod 902, thereby providing power for pushing the reaming knife 8 to move.

[0032] like Figures 5 and 6 As shown, an arc disk 201 is fixedly installed on the bottom of the reaming box 2, and a plurality of rotary cutters 202 are fixedly installed on the outer wall of the arc disk 201; When the motor 401 drives the screw drill bit 601 to rotate, the motor 401 will drive the cavity 1 to rotate in the opposite direction, and the cavity 1 will drive the arc disk 201 to rotate through the reaming box 2, and the arc disk 201 will drive multiple rotary cutters 202 to scrape the soil layer, so that when the screw drill bit 601 drills the soil layer, the arc disk 201 drives the rotary cutter 202 to expand the drilled hole, which is convenient for the subsequent reaming cutter 8 to expand the hole diameter, thereby playing the role of coarse expansion of the hole diameter.

[0033] like Figures 4 and 5 As shown, the auxiliary drill assembly includes an auxiliary knife 10, and there are multiple auxiliary knives 10. The outer walls of the multiple auxiliary knives 10 are respectively slidably connected to the inner walls of the multiple reaming knives 8. The blade ends of the multiple auxiliary knives 10 are flush with the drill bit position of the screw drill bit 601, and the multiple auxiliary knives 10 are arranged in a circular array around the drill bit of the screw drill bit 601. The outer walls of the multiple auxiliary knives 10 are all slidably connected to the inner wall of the cavity 1; When the motor 401 drives the screw drill bit 601 to drill the soil layer, the cavity 1 will be driven by it to rotate in the reverse direction, and the cavity 1 will drive multiple auxiliary cutters 10 to rotate in the reverse direction at one end of the screw drill bit 601, so that when the screw drill bit 601 drives the drill bit to drill the soil layer, the multiple auxiliary cutters 10 rotate in the reverse direction on the outer wall of the drill bit, thereby cooperating with the screw drill bit 601 to perform rough drilling operations on the soil layer. When the screw drill bit 601 rotates, the auxiliary cutters 10 rotate in the reverse direction outside the screw drill bit 601, so that when the two drill holes in the relative soil layers, they can better break the soil layer and cooperate with the screw drill bit 601 to drill holes in the soil layer.

[0034] like Figures 6 and 7 As shown, the inner wall of the reaming knife 8 is provided with a slider 807, which is placed on one side of the inner wall of the reaming knife 8, and a round rod is fixedly installed on one side of the top of the auxiliary knife 10, and the outer wall of the round rod is slidably connected to the inner wall of the slider 807. A pressure spring 808 is provided between one side of the slider 807 and one side of the top of the auxiliary knife 10, and a positioning rod 803 is fixedly installed on the other side of the top of the auxiliary knife 10, and the outer wall of the positioning rod 803 is slidably connected to the inner wall of the receiving cavity 1, and the top of one end of the positioning rod 803 is provided with an inclined sliding surface, and the outer wall of the drill sleeve 6 can be slidably connected to the outer wall of the positioning rod 803; During installation, the drill sleeve 6 is placed in the cavity 1 from the top of the cavity 1. When the drill sleeve 6 moves down into the cavity 1, the outer wall of the drill sleeve 6 will push the positioning rod 803 to move backward, and the positioning rod 803 will drive the auxiliary knife 10 to squeeze the pressure spring 808 in the reaming knife 8 to slide. When the drill bit at the bottom end of the screw drill bit 601 moves to a position flush with the auxiliary knife 10, at this time, the movement of the drill sleeve 6 is stopped, and multiple auxiliary knives 10 will be pushed by the drill sleeve 6 and the surrounding areas of the drill bit, thereby determining the position between the auxiliary knife 10 and the drill bit. By setting it up in this way, when the device is installed with drill sleeves 6 and screw drill bits 601 of various diameters, the position between the auxiliary knife 10 and the drill bit is always consistent, which can better cooperate with the drill bit to break the soil layer and play a role in adjusting the position of the auxiliary knife 10.

[0035] like Figures 4 to 7 As shown, a sliding box is symmetrically fixedly installed on the inner wall of the reaming box 2, and the outer wall of the sliding box is slidably connected to the outer wall of the reaming knife 8. The inner wall of the sliding box is rotatably connected to a gear 805. The outer wall of the slider 807 is slidably connected to the inner wall of the reaming knife 8. A gear rod 806 is fixedly installed on both ends of the slider 807. One side of the two gear rods 806 is slidably connected to the outer wall of the reaming knife 8. The teeth on the two tooth seats 804 and the gear rod 806 are respectively engaged with the teeth on the two gears 805. When the tooth seat 804 is pushed by the push rod 902, the tooth seat 804 will drive the gear 805 to rotate, and the gear 805 will drive the gear rod 806 to move in the opposite direction through the tooth meshing setting, and the gear rod 806 will push the auxiliary knife 10 to move through the pressure spring 808. Since one end of the positioning rod 803 is restricted by the drill sleeve 6, the gear rod 806 will squeeze the pressure spring 808 to move toward the auxiliary knife 10. On the one hand, it can ensure that when the reaming knife 8 moves, the auxiliary knife 10 will not change position due to the movement of the reaming knife 8. On the other hand, a retaining extrusion force can be applied to the auxiliary knife 10, so that the auxiliary knife 10 can be placed more firmly on the outside of the drill bit, thereby reinforcing the stability of the auxiliary knife 10.

[0036] Working principle: By setting a hydraulic mechanism in the hydraulic box 3, the hydraulic mechanism can drive the screw drill bit 601 to move downward for drilling operations. When drilling operations are required in the oil field, first install the support frame at the bottom of the frame plate 5 and place the device just above the location where the hole needs to be drilled. When the placement is completed, the screw drill bit 601 is driven to rotate by controlling the rotation of the drill drive assembly, and the screw drill bit 601 is driven downward by the hydraulic mechanism. The screw drill bit 601 can then drill holes in the oil field soil layer. While drilling, the hole expansion box The auxiliary drilling assembly in 2 cooperates with the screw drill bit 601 to drill the oil field soil layer, thereby accelerating the drilling efficiency of the screw drill bit 601 on the soil layer. When the two are working on the oil field soil layer, the reaming assembly drives the reaming cutter 8 to reaming the borehole, so that the hole diameter drilled by the screw drill bit 601 meets the construction hole diameter during construction, thereby avoiding the need to re-reame the borehole during subsequent construction due to the discrepancy between the borehole diameter and the construction diameter, which wastes time and also consumes a certain amount of manpower, and is more conducive to the construction of oil field drilling. When the device is installed, the motor 401 is driven to rotate, and the motor 401 can drive the screw drill bit 601 to rotate through the connecting rod 404. When the screw drill bit 601 rotates, the hydraulic mechanism in the hydraulic box 3 drives the device to move downward through the shift plate 301, so that the hydraulic mechanism drives the screw drill bit 601 to move downward, and cooperates with the motor 401 to drive the screw drill bit 601 to rotate, so that the screw drill bit 601 can drill the oil field soil layer, playing the role of driving the screw drill bit 601 to rotate; When the motor 401 drives the connecting rod 404 to rotate, the motor 401 also drives the mother wheel 403 to rotate. When the mother wheel 403 rotates, the mother wheel 403 drives the gear disc 101 to rotate in the opposite direction through the multiple sub-wheels 402. The gear disc 101 will drive the reaming box 2 to rotate in the opposite direction of the rotation direction of the screw drill bit 601 through the receiving cavity 1. As a result, when the screw drill bit 601 rotates to drill the soil layer, the auxiliary drill assembly rotates in the opposite direction of the rotation of the screw drill bit 601, so that the auxiliary drill assembly can better cooperate with the screw drill bit 601 to perform the drilling operation, thereby driving the auxiliary drill assembly to rotate in the opposite direction to cooperate with the screw drill bit 601 to drill the hole; When the screw drill bit 601 rotates to drill the soil layer, the reaming knife 8 is pushed to move, and the reaming knife 8 will pull the return spring 801 to slide on the limit rod 802, and the reaming knife 8 will slowly extend from the inner wall of the reaming box 2. When the extended distance of multiple reaming knives 8 is the same as the construction hole diameter, at this time, the reaming knife 8 is stopped from moving, and the screw drill bit 601 is driven to rotate by the motor 401, and the motor 401 drives the receiving chamber 1 to rotate. The motor 401 can drive multiple reaming knives 8 to rotate through the receiving chamber 1, thereby expanding the hole diameter drilled by the screw drill bit 601, and playing the role of expanding the borehole diameter. The reaming knife 8 is pulled on the limit rod 802 to move the return spring 801, and the reaming knife 8 can be adjusted in position in the reaming box 2, so that multiple reaming knives 8 can expand holes of different sizes. When the position of the reaming knife 8 needs to be adjusted, the shaft 901 is pushed downward, and the sliding rod 903 can move downward in the receiving chamber 1. Through the hinged setting between the push rod 902 and the shaft 901, when the shaft 901 moves downward, the shaft 901 can push the push rod 902 to hinge and rotate on the outer wall of the shaft 901, and the push rod 902 can push the tooth seat 804 to move, so that the reaming knife 8 moves outward in the reaming box 2, thereby determining the diameter of the hole to be reamed, and playing the role of pushing the reaming knife 8 to move and adjust the position; When the position of the reaming knife 8 needs to be adjusted, the hydraulic rod 7 is controlled to operate, and the hydraulic rod 7 drives the pressure plate 9 to slide downward on the outer wall of the cavity 1. When the pressure plate 9 slides down, the pressure plate 9 pushes the shaft rod 901 to move downward, so that the shaft rod 901 pushes the reaming knife 8 to move through the push rod 902, which plays a role in providing power for pushing the reaming knife 8 to move; When the motor 401 drives the screw drill bit 601 to rotate, the motor 401 will drive the cavity 1 to rotate in the opposite direction, and the cavity 1 will drive the arc disk 201 to rotate through the reaming box 2, and the arc disk 201 will drive multiple rotary cutters 202 to scrape the soil layer, so that when the screw drill bit 601 is drilling the soil layer, the arc disk 201 drives the rotary cutters 202 to further expand the drilled hole, which is convenient for the subsequent reaming cutter 8 to expand the hole diameter, thereby playing the role of roughly expanding the hole diameter; When the motor 401 drives the screw drill bit 601 to drill the soil layer, the cavity 1 will be driven by it to rotate in the reverse direction, and the cavity 1 will drive multiple auxiliary cutters 10 to rotate in the reverse direction at one end of the screw drill bit 601, so that when the screw drill bit 601 drives the drill bit to drill the soil layer, the multiple auxiliary cutters 10 rotate in the reverse direction on the outer wall of the drill bit, thereby cooperating with the screw drill bit 601 to perform a rough drilling operation on the soil layer. When the screw drill bit 601 rotates, the auxiliary cutters 10 rotate in the reverse direction outside the screw drill bit 601, so that when the two drill holes in the relative soil layer, the soil layer can be better broken, thereby cooperating with the screw drill bit 601 to drill holes in the soil layer; When the drill bit 601 is at the bottom, the drill sleeve 6 is moved to the position flush with the auxiliary knife 10, and the auxiliary knife 10 is pushed by the drill sleeve 6 and the surrounding area of ​​the drill bit 601, thereby determining the position between the auxiliary knife 10 and the drill bit. When the tooth seat 804 is pushed by the push rod 902, the tooth seat 804 will drive the gear 805 to rotate, and the gear 805 will drive the gear rod 806 to move in the opposite direction through the tooth meshing setting, and the gear rod 806 will push the auxiliary knife 10 to move through the pressure spring 808. Since one end of the positioning rod 803 is restricted by the drill sleeve 6, the gear rod 806 will squeeze the pressure spring 808 to move toward the auxiliary knife 10. On the one hand, it can ensure that when the reaming knife 8 moves, the auxiliary knife 10 will not change position due to the movement of the reaming knife 8. On the other hand, a retaining extrusion force can be applied to the auxiliary knife 10, so that the auxiliary knife 10 can be placed more firmly on the outside of the drill bit, thereby reinforcing the stability of the auxiliary knife 10.

[0037] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw drill tool for oil drilling, characterized by: It includes a cavity, a reaming box is fixedly installed on the bottom of the cavity, an axis box is fixedly installed on the top of the cavity, a hydraulic box is provided on the top of the axis box, a frame is fixedly installed on the top of the hydraulic box, a screw drill bit is provided inside the cavity, a drill driving assembly is provided inside the axis box, the drill driving assembly is used to drive the screw drill bit to drill the oil field soil layer, a reaming assembly is provided inside the reaming box, the reaming assembly includes a reaming knife, and the reaming assembly is used to drive the reaming knife to reaming the drill hole.

2. The screw drill tool for oil drilling according to claim 1, characterized in that: The drill drive assembly includes a motor, a shift disk is provided at the bottom of the hydraulic box, the motor is fixedly installed at the bottom of the shift disk, the external rotation of the screw drill bit is connected to the drill sleeve, and the output end of the motor is fixedly installed with a connecting rod, one end of the connecting rod passes through the inner wall of the drill sleeve and is fixedly connected to the top of the screw drill bit.

3. The screw drill tool for oil drilling according to claim 2, characterized in that: A mother wheel is fixedly mounted on the outer wall of the connecting rod, and the outer wall of the mother wheel is rotatably connected to the inner wall of the shaft box. The bottom of the shift disk is rotatably connected to multiple toothed disks, and the teeth on the multiple toothed disks can engage with the teeth on the mother wheel. A toothed disk is fixedly mounted on the inner wall of the shaft box, and the teeth on the toothed disk engage with the teeth on the multiple sub-wheels respectively. The top of the shaft box is rotatably connected to the bottom of the shift disk.

4. The screw drill tool for oil drilling according to claim 3, characterized in that: The reaming assembly also includes a limit rod, and there are multiple limit rods and reaming knives. One end of each limit rod is fixedly connected to the outer wall of the cavity, and the inner walls of each reaming knife are respectively slidably connected to the outer walls of the multiple limit rods. A reset spring is provided between one side of each reaming knife and the outer wall of the cavity, and the outer walls of each reaming knife are slidably connected to the inner wall of the reaming box.

5. The screw drill tool for oil drilling according to claim 4, characterized in that: The outer walls of the multiple reaming knives are symmetrically fixed with tooth seats, the inner walls of the multiple tooth seats are fixed with push rods, the inner wall of the cavity is slidably connected with multiple sliding rods, the outer walls of the multiple sliding rods are fixed with shaft rods, and one end of the multiple push rods is hinged to the outer walls of the multiple shaft rods in pairs.

6. The screw drill tool for oil drilling according to claim 5, characterized in that: The inner wall of the expansion box is symmetrically fixed with multiple hydraulic rods, and the output ends of the multiple hydraulic rods are fixedly installed with pressure plates. The inner wall of the pressure plate is slidably connected to the outer wall of the cavity, and the tops of the multiple shafts are fixedly connected to the bottom of the pressure plate.

7. The screw drill tool for oil drilling according to claim 6, characterized in that: An arc disk is fixedly installed on the bottom of the hole expansion box, and a plurality of rotary cutters are fixedly installed on the outer wall of the arc disk.

8. The screw drill tool for oil drilling according to claim 7, characterized in that: The auxiliary drill assembly includes auxiliary knives, and there are multiple auxiliary knives. The outer walls of the multiple auxiliary knives are respectively slidably connected to the inner walls of the multiple reaming knives. The blade ends of the multiple auxiliary knives are flush with the drill bit position of the screw drill bit, and the multiple auxiliary knives are arranged in a circular array around the screw drill bit. The outer walls of the multiple auxiliary knives are all slidably connected to the inner wall of the cavity.

9. The screw drill tool for oil drilling according to claim 8, characterized in that: The inner wall of the reaming knife is provided with a slider, which is placed on one side of the inner wall of the reaming knife. A round rod is fixedly installed on one side of the top of the auxiliary knife. The outer wall of the round rod is slidably connected to the inner wall of the slider. A pressure spring is provided between one side of the slider and one side of the top of the auxiliary knife. A positioning rod is fixedly installed on the other side of the top of the auxiliary knife. The outer wall of the positioning rod is slidably connected to the inner wall of the cavity. The top of one end of the positioning rod is provided with an inclined sliding surface, and the outer wall of the drill sleeve can be slidably connected to the outer wall of the positioning rod.

10. The screw drill tool for oil drilling according to claim 9, characterized in that: A sliding box is symmetrically fixed on the inner wall of the reaming box, the outer wall of the sliding box is slidably connected to the outer wall of the reaming knife, the inner wall of the sliding box is rotatably connected to a gear, the outer wall of the slider is slidably connected to the inner wall of the reaming knife, and gear rods are fixedly installed at both ends of the slider, one side of the two gear rods is slidably connected to the outer wall of the reaming knife, and the teeth on the two tooth seats and the gear rods are respectively engaged with the teeth on the two gears.

Images