A drilling device and its application in drilling in complex formations

Abstract

The present invention belongs to the technical field of drilling equipment, specifically a drilling equipment and its application in drilling in complex formations, comprising a base, a mounting block is installed on the base, a lifting rod driven by a lifting motor, a cross plate and a fixing plate are installed on the mounting block, and a drill rod driven by a drilling motor is installed on the fixing plate; a pressure plate is installed below the base, an electric push rod is installed in the mounting block, the lower end of the electric push rod is connected to the pressure plate, a through hole is opened in the middle position of the pressure plate, a contact plate is installed in the through hole, and the drill rod passes through the through hole; a connecting tube is installed below the pressure plate; the present invention has a simple structure, and the pressure plate can be used to shield the wellbore to prevent waste and debris from being re-filled into the wellbore and increasing the workload of the staff, and waste and debris overflowed during drilling can be dispersed and cleaned to avoid their accumulation on the pressure plate and affecting the normal operation of the drilling equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, in particular to a drilling equipment and its application in drilling in complex formations. Background Art

[0002] Mining is the technology and science of extracting mineral resources from the earth's crust and surface. The mining industry is an important raw material industry. Metallic ores are the main raw materials for the smelting industry, and non-metallic ores are important chemical raw materials and building materials. Drilling is required during the mining process.

[0003] During the drilling process of existing drilling equipment, the drilled soil will accumulate near the borehole. If the accumulated soil is not cleaned in time, the soil will re-enter the borehole and "flood" the drill bit, making it difficult for the drill bit to withdraw, and even the drill bit will deviate from the predetermined drilling trajectory due to the force of the soil, affecting the drilling efficiency and effect. At the same time, the soil is also easy to accumulate in other parts of the drilling equipment (such as the drill rod), causing the drilling equipment to be blocked by the soil, affecting the normal progress of the drilling work, and requiring staff to manually clean it, reducing the efficiency of mining. Summary of the invention

[0004] In order to make up for the shortcomings of the existing technology, the wellbore is shielded by a pressure plate to prevent waste and debris from re-filling into the wellbore and increasing the workload of the staff, and the waste and debris overflowed during the drilling process are dispersed and cleaned to avoid their accumulation on the pressure plate and affecting the normal operation of the drilling equipment. The present invention proposes a drilling equipment and its application in drilling in complex formations.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a drilling equipment described in the present invention comprises a base, a support rod is installed on the lower surface of the base, a mounting block is installed on the base, a lifting slot is opened on the mounting block, a lifting rod and a screw are installed in the lifting slot, the screw drives the lifting rod to move up and down, a horizontal plate is installed on the upper end of the lifting rod, a lifting motor and a fixing plate are installed on the horizontal plate, the lifting motor drives the screw to rotate, a drilling motor and a connecting head are installed on the fixing plate, the drilling motor drives the connecting head to rotate, and a drilling rod is installed on the lower end of the connecting head;

[0006] A working window is provided on the base, and the lower end of the drill rod passes through the working window;

[0007] A pressing plate is installed below the base, and the pressing plate is connected to the base through a telescopic rod. An electric push rod is installed in the mounting block, and the lower end of the electric push rod is connected to the pressing plate. A through hole is opened in the middle of the pressing plate, and the drill rod passes through the through hole. A contact plate is installed on the inner wall of the through hole, and the other end of the contact plate contacts the drill rod.

[0008] A connecting tube is installed below the pressing plate, and the connecting tube is inserted around the wellbore drilled by the drill rod.

[0009] Preferably, a guide layer is installed on the pressing plate, and the guide layer protrudes upward, and the protrusion height of the guide layer is the largest at a position close to the drill rod.

[0010] Preferably, a mounting column is mounted on the pressing plate, an elastic rod is mounted on the mounting column, a friction ball is mounted on one end of the elastic rod away from the mounting column, the friction ball is in contact with the drill rod, and the elastic rod is attached to the surface of the guide layer;

[0011] The elastic rods are evenly distributed around the drill rod as the center.

[0012] Preferably, the mounting column comprises an upper portion and a lower portion, the elastic rod is mounted on the upper portion, the upper portion is rotatably mounted on the lower portion, a coil spring is mounted in the lower portion, and the other end of the coil spring is connected to the upper portion.

[0013] Preferably, the guide layer is made of elastic material, the interior of the guide layer is hollow, a spray hole is opened at a position of the guide layer close to the drill rod, and water is pumped into the guide layer;

[0014] The elastic rod is provided with a protrusion, and the height of the protrusion on the elastic rod gradually decreases in the direction toward the drill rod.

[0015] Preferably, the connecting cylinder is mounted on the pressing plate via a connecting block, the connecting block is elastic, and a buffer layer is mounted on the lower surface of the pressing plate;

[0016] The reciprocating motion of the electric push rod drives the pressing plate to vibrate or shake.

[0017] Preferably, a shift plate is installed at the edge of the pressure plate, and the shift plate is arc-shaped and elastic.

[0018] An application of a drilling device in drilling in complex formations, the application being applicable to any one of the drilling devices described above, the application comprising the following steps:

[0019] S1: The staff moves the drilling equipment to the designated drilling location, and then adjusts the support rods to stably support the drilling equipment so that the base is in a horizontal state;

[0020] S2: The controller controls the lifting motor to start, so that the screw drives the lifting rod to move downward, thereby gradually lowering the drill rod, so that the drill rod passes through the working window and the through hole, and the drill bit at the lower end contacts the ground. At the same time, the electric push rod is controlled to extend downward, so that the pressing plate contacts the ground.

[0021] S3: Control the drilling motor to start, drive the drill rod to rotate, and cooperate with the movement of the lifting motor to make the drill rod gradually drill under the ground. At the same time, control the electric push rod to reciprocate in a small amplitude to make the pressure plate vibrate or shake.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The drilling equipment described in the present invention and its application in drilling in complex formations, by providing a pressure plate, a contact plate, a connecting tube, a guide layer, a mounting column and an elastic rod, makes the pressure plate contact the ground and shields the wellbore to prevent the soil near the wellbore from refilling into the hole and increasing the workload of the staff. At the same time, the overflowed waste and debris are guided by the guide layer and pushed and moved by the elastic rod to disperse and clean them, so as to prevent them from accumulating on the pressure plate and affecting the normal use of the drilling equipment.

[0024] 2. The drilling equipment described in the present invention and its application in drilling in complex formations, by arranging an electric push rod, a telescopic rod, a buffer layer, a pressure plate and a paddle, makes the electric push rod reciprocate within a limited range, drives the pressure plate to vibrate or shake, thereby throwing out and flying the waste and debris on the pressure plate, further cleaning the waste and debris on the pressure plate, improving the cleaning effect, and avoiding the accumulation of waste and debris on the pressure plate, which affects the normal use of the drilling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a front view of the drilling equipment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the drilling equipment of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the pressure plate in the drilling equipment of the present invention;

[0029] Figure 4 yes Figure 2 A partial enlarged view of the middle part;

[0030] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle;

[0031] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle;

[0032] Figure 7 It is a flowchart of the steps of using drilling equipment in drilling in complex formations;

[0033] In the figure: base 1, working window 11, mounting block 2, lifting rod 21, lifting slot 211, cross plate 22, fixing plate 221, lifting motor 23, screw 231, drilling motor 24, connector 25, drill rod 3, pressing plate 4, electric push rod 41, telescopic rod 42, contact plate 43, guide layer 44, spray hole 441, connecting tube 45, connecting block 451, buffer layer 46, dial plate 47, elastic rod 48, mounting column 481, friction ball 482. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 7 As shown, a drilling device described in the present invention comprises a base 1, a support rod is installed on the lower surface of the base 1, a mounting block 2 is installed on the base 1, a lifting slot 211 is opened on the mounting block 2, a lifting rod 21 and a screw 231 are installed in the lifting slot 211, the screw 231 drives the lifting rod 21 to move up and down, a transverse plate 22 is installed on the upper end of the lifting rod 21, a lifting motor 23 and a fixing plate 221 are installed on the transverse plate 22, the lifting motor 23 drives the screw 231 to rotate, a drilling motor 24 and a connector 25 are installed on the fixing plate 221, the drilling motor 24 drives the connector 25 to rotate, and a drill rod 3 is installed on the lower end of the connector 25;

[0036] The base 1 is provided with a working window 11, and the lower end of the drill rod 3 passes through the working window 11;

[0037] A pressing plate 4 is installed below the base 1, and the pressing plate 4 is connected to the base 1 through a telescopic rod 42. An electric push rod 41 is installed in the mounting block 2, and the lower end of the electric push rod 41 is connected to the pressing plate 4. A through hole is opened in the middle position of the pressing plate 4, and the drill rod 3 passes through the through hole. A contact plate 43 is installed on the inner wall of the through hole, and the other end of the contact plate 43 contacts the drill rod 3.

[0038] A connecting tube 45 is installed below the pressing plate 4, and the connecting tube 45 is inserted around the wellbore drilled by the drill rod 3;

[0039] During operation, the drilling equipment is moved to the drilling position, and the stability of the drilling equipment and the horizontality of the base 1 are ensured by adjusting the support rods. Then, the lifting motor 23 is started by the controller, so that the lifting motor 23 drives the screw rod 231 to rotate through a synchronous belt or chain, thereby driving the lifting rod 21 to move downward, so that the cross plate 22, the fixed plate 221 and the drill rod 3 begin to descend. When the drill bit at the lower end of the drill rod 3 passes through the working window 11 and the through hole and touches the ground, at the same time, the electric push rod 41 is controlled to extend downward, driving the pressing plate 4 to touch the ground downward. Then, the drilling motor 24 is controlled to start, so that the connecting head 25 and the drill rod 3 begin to rotate, and cooperate with the lifting motor 23 to drive the drill rod 3 to move downward, so that the drill rod 3 and the drill bit begin to drill below the ground;

[0040] During the process of the drill rod 3 drilling downward, a large amount of waste and debris generated by the drilling will overflow from the hole to the ground. Since the connecting tube 45 is inserted around the wellbore being drilled, the waste and debris overflowing upward will be constrained and guided by the connecting tube 45, so that the waste and debris continue to flow upward, pass through the elastic contact plate 43, and overflow onto the surface of the pressing plate 4, thereby avoiding the uneven ground causing a gap between the pressing plate 4 and the ground, causing the waste and debris to overflow from the wellbore and enter the gap below the pressing plate 4, so that the waste and debris accumulate below the pressing plate 4, causing the waste and debris to interfere with the downward drilling process of the drilling equipment;

[0041] At the same time, since the contact plate 43 installed in the through hole is composed of multiple groups of units and the contact plate 43 is elastic, when the waste and debris overflow upward, the contact plate 43 is squeezed, so that gaps are generated between the units of the contact plate 43, which facilitates the waste and debris to pass through the contact plate 43 and continue to move upward, so as to reach the top of the pressure plate 4, so as to facilitate the cleaning of the waste and debris, so as to use the pressure plate 4 to isolate the waste and debris, and avoid the waste and debris from accumulating in the hole and affecting the normal operation of the drilling equipment;

[0042] At the same time, the contact plate 43 can also seal the through hole, so that the waste and debris overflowing upward can move in one direction, preventing the waste and debris from passing through the through hole again and refilling the hole, which would have an adverse effect on the operation of the drilling equipment;

[0043] At the same time, since the electric push rod 41 drives the pressure plate 4 to contact the ground, the pressure plate 4 will press the ground near the drilled hole, reduce the amount of loose soil generated by drilling, avoid the soil near the hole from filling into the hole, and avoid the waste and debris overflowed during drilling from re-filling into the hole, affecting the drilling effect of the drilling equipment, increasing the workload of the staff, and reducing mining efficiency.

[0044] As an embodiment of the present invention, a guide layer 44 is installed on the pressing plate 4, and the guide layer 44 protrudes upward, and the guide layer 44 has the largest protrusion height at a position close to the drill rod 3;

[0045] By installing a guide layer 44 on the upper surface of the pressure plate 4 and utilizing the upwardly protruding shape of the middle position of the guide layer 44, the waste and debris overflowing upward will reach the highest point on the guide layer 44 after passing through the contact plate 43, so that the overflowing waste and debris can move away from the drill pipe 3 under the action of gravity and the vibration generated by the drilling equipment, thereby diffusing and expanding the overflowing waste and debris, and avoiding the accumulation of waste and debris near the drill pipe 3 as much as possible, thereby avoiding interference with the normal use of the drilling equipment.

[0046] As an embodiment of the present invention, a mounting column 481 is mounted on the pressing plate 4, an elastic rod 48 is mounted on the mounting column 481, a friction ball 482 is mounted on one end of the elastic rod 48 away from the mounting column 481, the friction ball 482 is in contact with the drill rod 3, and the elastic rod 48 is attached to the surface of the guide layer 44;

[0047] The elastic rods 48 are evenly distributed around the drill rod 3;

[0048] A friction ball 482 is installed at one end of the elastic rod 48 away from the mounting column 481, and the elastic friction ball 482 is used to contact the drill rod 3, thereby avoiding direct contact between the elastic rod 48 and the drill rod 3, thereby reducing wear between the two. At the same time, since the friction ball 482 contacts the surface of the drill rod 3, during the rotation of the drill rod 3, the end of the elastic rod 48 with the friction ball 482 will be deviated, causing the elastic rod 48 to bend and swing. During this process, the elastic rod 48 attached to the surface of the guide layer 44 will move and push the waste and debris that have reached the top of the pressure plate 4, so that the waste and debris move on the pressure plate 4 in a direction away from the drill rod 3, thereby avoiding the accumulation of waste and debris on the pressure plate 4 due to friction, affecting the dispersion of the waste and debris, causing the waste and debris to accumulate near the drill rod 3, thereby affecting the normal use of the drilling equipment;

[0049] At the same time, since the drill rod 3 is a spiral drill rod 3, that is, a spiral protrusion or guide groove is set on the surface of the drill rod 3, the waste, debris, etc. generated by the drill rod 3 in the process of drilling downward can be conveniently sent upward out of the wellbore, and due to the influence of the protrusion or guide groove on the surface of the drill rod 3, when the friction ball 482 contacts the protrusion or guide groove, the friction ball 482 is more susceptible to impact, driving the elastic rod 48 to swing, and increasing the amplitude of the swing of the elastic rod 48, thereby improving the cleaning effect of the elastic rod 48 on the waste and debris on the pressure plate 4, avoiding the accumulation of waste and debris on the pressure plate 4, affecting the normal operation of the drilling equipment.

[0050] As an embodiment of the present invention, the mounting column 481 includes an upper portion and a lower portion, the elastic rod 48 is mounted on the upper portion, the upper portion is rotatably mounted on the lower portion, a coil spring is installed in the lower portion, and the other end of the coil spring is connected to the upper portion;

[0051] By installing a coil spring in the mounting column 481, the mounting column 481 can rotate, and after the rotation, it can automatically return to its original position under the action of the coil spring, so that when the friction ball 482 on the elastic rod 48 is driven by the drill rod 3 and is deflected, the elastic rod 48 can not only bend, but also rotate around the mounting column 481, thereby increasing the range of the elastic rod 48 to move or push more waste and debris on the pressure plate 4, and promote the waste and debris on the pressure plate 4 to move away from the drill rod 3, thereby avoiding the waste and debris. The accumulation on the pressure plate 4 affects the normal use of the drilling equipment. At the same time, when the drilling equipment works for a long time, there is too much waste and debris on the pressure plate 4, which makes the waste and debris on the pressure plate 4 unable to be easily moved or pushed, thereby causing the waste and debris on the pressure plate 4 to accumulate and pile up again. The staff will manually clean or move the waste and debris on the pressure plate 4 to minimize the accumulation of waste and debris, as well as the possibility of waste and debris re-filling into the drilled hole, thereby reducing the workload of the staff and improving the mining work efficiency.

[0052] As an embodiment of the present invention, the guide layer 44 is made of elastic material, the inside of the guide layer 44 is hollow, and a spray hole 441 is opened at a position of the guide layer 44 close to the drill rod 3, and water is pumped into the guide layer 44;

[0053] The elastic rod 48 is provided with a protrusion, and the height of the protrusion on the elastic rod 48 gradually decreases in the direction toward the drill rod 3;

[0054] During the process of the drill rod 3 drilling downward, as waste and debris overflow upward, dust is likely to appear at the drilling site, affecting the on-site working environment and the health of the workers. Therefore, the water used for purification is pumped into the guide layer 44 by a hose through an external water pump, and then the water is sprayed out from the spray holes 441 on the guide layer 44 to form water mist, thereby cleaning the dust generated during the drilling process and preventing the dust generated during the drilling from affecting the surrounding environment.

[0055] At the same time, since the spray hole 441 is located on the guide layer 44 near the drill rod 3, under the action of the pressing plate 4 and the connecting tube 45, the connection between the drilled wellbore and the outside world is located at the through hole, that is, the position on the guide layer 44 near the drill rod 3, that is, the dust generated during the drilling process will float outward from the through hole. Therefore, the water sprayed from the spray hole 441 can cover and clean the generated dust in the first time, thereby improving the effect of cleaning the dust, reducing the dispersion of dust, and reducing the impact on the surrounding environment;

[0056] At the same time, since a protrusion is provided on the elastic rod 48, and the height of the protrusion is lower the closer to the drill rod 3, when the elastic rod 48 is driven by the drill rod 3 to bend and deflect, the depression formed by the protrusion on the elastic rod 48 away from the drill rod 3 on the guide layer 44 will be deeper, that is, the steepness of the local position of the guide layer 44 is increased, which promotes the waste, debris, etc. on the guide layer 44 to move away from the drill rod 3, so that the waste and debris are dispersed on the pressure plate 4 or fall off the pressure plate 4, thereby reducing the accumulation of waste and debris on the pressure plate 4 as much as possible to avoid affecting the normal use of the drilling equipment.

[0057] As an embodiment of the present invention, the connecting tube 45 is installed on the pressing plate 4 through a connecting block 451, the connecting block 451 is elastic, and a buffer layer 46 is installed on the lower surface of the pressing plate 4;

[0058] The reciprocating motion of the electric push rod 41 drives the pressing plate 4 to vibrate or shake;

[0059] Through the action of the connecting block 451, the connecting tube 45 and the pressure plate 4 are elastically connected, and displacement or skewness is allowed between the two. At the same time, by installing a buffer layer 46 under the pressure plate 4, the buffer layer 46 is used to fill the gap between the pressure plate 4 and the ground, so as to avoid direct contact between the pressure plate 4 and the ground and prevent the pressure plate 4 from shaking. Therefore, by controlling the electric push rod 41, the electric push rod 41 reciprocates within a limited range. Under the action of the telescopic rod 42 on the pressure plate 4, the pressure plate 4 vibrates or shakes, so that the waste, debris, etc. on the pressure plate 4 are dispersed or shaken off the pressure plate 4, and the waste and debris on the pressure plate 4 are cleaned to avoid the accumulation of waste and debris on the pressure plate 4, which affects the normal use of the drilling equipment and the situation where waste and debris refill the hole.

[0060] As an embodiment of the present invention, a dial plate 47 is installed at the edge of the pressure plate 4, and the dial plate 47 is arc-shaped and elastic;

[0061] By installing a paddle 47 on the edge of the pressure plate 4 and utilizing the elasticity and arc shape of the paddle 47, the waste or debris that has just fallen from the pressure plate 4 can be further picked up or thrown away by the paddle 47, thereby preventing the waste and debris that have fallen from the pressure plate 4 from remaining near or around the pressure plate 4 and affecting the normal use of the pressure plate 4. At the same time, it can also prevent the waste and debris from accumulating around the pressure plate 4, resulting in the waste and debris on the pressure plate 4 being unable to be dispersed again or detached from the pressure plate 4, resulting in the waste and debris accumulating on the pressure plate 4 and affecting the normal use of the drilling equipment.

[0062] An application of a drilling device in drilling in complex formations, the application being applicable to any one of the drilling devices described above, the application comprising the following steps:

[0063] S1: The staff moves the drilling equipment to the designated drilling location, and then adjusts the support rods to stably support the drilling equipment so that the base 1 is in a horizontal state;

[0064] S2: The controller controls the lifting motor 23 to start, so that the screw rod 231 drives the lifting rod 21 to move downward, thereby gradually lowering the drill rod 3, so that the drill bit at the lower end of the drill rod 3 passes through the working window 11 and the through hole and contacts the ground. At the same time, the electric push rod 41 is controlled to extend downward, so that the pressing plate 4 contacts the ground.

[0065] S3: Control the drilling motor 24 to start, drive the drill rod 3 to rotate, cooperate with the movement of the lifting motor 23, so that the drill rod 3 gradually starts to drill below the ground. At the same time, control the electric push rod 41 to reciprocate in a small amplitude, so that the pressure plate 4 vibrates or shakes.

[0066] The specific workflow is as follows:

[0067] During operation, the drilling equipment is moved to the drilling position, and the support rod is adjusted. Then, the lifting motor 23 is started through the controller, so that the lifting motor 23 drives the lifting rod 21 to move downward, so that the cross plate 22, the fixing plate 221 and the drill rod 3 begin to descend. When the drill bit at the lower end of the drill rod 3 passes through the working window 11 and the through hole and touches the ground, at the same time, the electric push rod 41 is controlled to extend downward, driving the pressing plate 4 to touch the ground downward. Then, the drilling motor 24 is controlled to start, so that the connecting head 25 and the drill rod 3 start to rotate, and cooperate with the lifting motor 23 to drive the drill rod 3 to move downward, so that the drill rod 3 and the drill bit begin to drill below the ground.

[0068] Since the connecting tube 45 is inserted around the drilled wellbore, the waste and debris overflowing upward will be restrained and guided by the connecting tube 45, so that the waste and debris continue to flow upward, pass through the elastic contact plate 43, and overflow onto the surface of the pressing plate 4;

[0069] At the same time, since the contact plate 43 installed in the through hole is composed of multiple groups of units and the contact plate 43 is elastic, when the waste and debris overflow upward, the contact plate 43 is squeezed, so that gaps are generated between the units of the contact plate 43, which facilitates the waste and debris to pass through the contact plate 43 and continue to move upward, so as to reach the top of the pressure plate 4;

[0070] By utilizing the upwardly convex shape of the middle position of the guide layer 44, the waste and debris overflowing upwards will reach the highest point on the guide layer 44 after passing through the contact plate 43, so that the overflowing waste and debris can move in a direction away from the drill pipe 3 under the action of gravity and the vibration generated by the drilling equipment;

[0071] The elastic friction ball 482 is in contact with the drill rod 3, thereby reducing the wear between the two. At the same time, since the friction ball 482 is in contact with the surface of the drill rod 3, during the rotation of the drill rod 3, the end of the elastic rod 48 with the friction ball 482 will be deviated, causing the elastic rod 48 to bend and swing. During this process, the elastic rod 48 attached to the surface of the guide layer 44 will move and push the waste and debris that have reached the top of the pressure plate 4.

[0072] At the same time, since the drill rod 3 is a spiral drill rod 3, that is, a spiral protrusion or guide groove is provided on the surface of the drill rod 3, waste, debris, etc. generated by the drill rod 3 during the downward drilling process can be conveniently sent upward out of the wellbore, and due to the influence of the protrusion or guide groove on the surface of the drill rod 3, when the friction ball 482 contacts the protrusion or guide groove, the friction ball 482 is more easily impacted, driving the elastic rod 48 to swing, and increasing the amplitude of the swing of the elastic rod 48;

[0073] By installing a coil spring in the mounting column 481, the mounting column 481 can rotate, and after the rotation, it can automatically return to its original position under the action of the coil spring, so that when the friction ball 482 on the elastic rod 48 is driven by the drill rod 3 and is deflected, the elastic rod 48 can not only bend, but also rotate around the mounting column 481, thereby increasing the range of the elastic rod 48 to be moved or pushed;

[0074] The water for purification is pumped into the guide layer 44 by an external water pump through a hose, and then the water is sprayed out from the spray holes 441 on the guide layer 44 to form water mist, thereby cleaning the dust generated during the drilling process;

[0075] At the same time, since the spray hole 441 is located on the guide layer 44 near the drill rod 3, under the action of the pressing plate 4 and the connecting tube 45, the connection between the drilled wellbore and the outside world is located at the through hole, that is, the position on the guide layer 44 near the drill rod 3, that is, the dust generated during the drilling process will float outward from the through hole, so the water sprayed from the spray hole 441 can cover and clean the generated dust in the first time;

[0076] At the same time, since the elastic rod 48 is provided with a protrusion, and the height of the protrusion is lower as it is closer to the drill rod 3, when the elastic rod 48 is driven by the drill rod 3 to bend and deflect, the protrusion on the elastic rod 48 away from the drill rod 3 squeezes the depression formed on the guide layer 44 deeper, that is, the steepness of the local position of the guide layer 44 is increased, and the waste, debris, etc. on the guide layer 44 are promoted to move in the direction away from the drill rod 3;

[0077] By controlling the electric push rod 41, the electric push rod 41 is reciprocated within a limited range, and under the action of the telescopic rod 42 on the pressing plate 4, the pressing plate 4 vibrates or shakes, so that the waste, debris, etc. on the pressing plate 4 are dispersed or shaken off or thrown away from the pressing plate 4;

[0078] By installing a paddle 47 on the edge of the pressing plate 4 and utilizing the elasticity and arc shape of the paddle 47 , the waste or debris that has just fallen from the pressing plate 4 can be further picked up or thrown away by the paddle 47 .

[0079] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drilling equipment, comprising a base, a support rod is installed on the lower surface of the base, a mounting block is installed on the base, a lifting slot is opened on the mounting block, a lifting rod and a screw are installed in the lifting slot, the screw drives the lifting rod to move up and down, a horizontal plate is installed on the upper end of the lifting rod, a lifting motor and a fixing plate are installed on the horizontal plate, the lifting motor drives the screw to rotate, a drilling motor and a connector are installed on the fixing plate, the drilling motor drives the connector to rotate, and a drill rod is installed at the lower end of the connector; Features: A working window is provided on the base, and the lower end of the drill rod passes through the working window; A pressing plate is installed below the base, and the pressing plate is connected to the base through a telescopic rod. An electric push rod is installed in the mounting block, and the lower end of the electric push rod is connected to the pressing plate. A through hole is opened in the middle of the pressing plate, and the drill rod passes through the through hole. A contact plate is installed on the inner wall of the through hole, and the other end of the contact plate contacts the drill rod. A connecting tube is installed below the pressure plate, and the connecting tube is inserted around the wellbore drilled by the drill pipe; A guide layer is installed on the pressing plate, and the guide layer protrudes upward, and the height of the guide layer protruding near the drill rod is the largest; The pressing plate is provided with a mounting column, an elastic rod is provided on the mounting column, a friction ball is provided on one end of the elastic rod away from the mounting column, the friction ball and the drill rod are in contact with each other, and the elastic rod is attached to the surface of the guide layer; The elastic rods are evenly distributed around the drill pipe.

2. A drilling equipment according to claim 1, characterized in that: The mounting column comprises an upper part and a lower part. The elastic rod is mounted on the upper part. The upper part is rotatably mounted on the lower part. A coil spring is mounted in the lower part. The other end of the coil spring is connected to the upper part.

3. A drilling equipment according to claim 1, characterized in that: The guide layer is made of elastic material, the inside of the guide layer is hollow, and a spray hole is opened near the drill pipe, and water is pumped into the guide layer; The elastic rod is provided with a protrusion, and the height of the protrusion on the elastic rod gradually decreases in the direction toward the drill rod.

4. A drilling equipment according to claim 1, characterized in that: The connecting cylinder is installed on the pressing plate through a connecting block, the connecting block is elastic, and a buffer layer is installed on the lower surface of the pressing plate; The reciprocating motion of the electric push rod causes the pressure plate to vibrate or shake.

5. A drilling equipment according to claim 1, characterized in that: A paddle is installed at the edge of the pressing plate, and the paddle is arc-shaped and elastic.

6. Application of a drilling device in drilling in complex formations, characterized in that: The application is applicable to a drilling equipment according to any one of claims 1 to 5 above, and the application comprises the following steps: S1: The staff moves the drilling equipment to the designated drilling location, and then adjusts the support rods to stably support the drilling equipment so that the base is in a horizontal state; S2: The controller controls the lifting motor to start, so that the screw drives the lifting rod to move downward, thereby gradually lowering the drill rod, so that the drill rod passes through the working window and the through hole, and the drill bit at the lower end contacts the ground. At the same time, the electric push rod is controlled to extend downward, so that the pressing plate contacts the ground. S3: Control the drilling motor to start, drive the drill rod to rotate, and cooperate with the movement of the lifting motor to make the drill rod gradually drill under the ground. At the same time, control the electric push rod to reciprocate in a small amplitude to make the pressure plate vibrate or shake.

Images