Acceleration real-time feedback drilling rig

Abstract

The invention discloses an acceleration real-time feedback drilling rig which comprises a drill rod, a data measurement platform is arranged on the inner wall of the drill rod, and a servo micro motor and an acceleration measurement system are arranged in the data measurement platform; the acceleration measurement system comprises a bearing, and a three-axis acceleration sensor is arranged at the center of an inner ring of the bearing; when the drilling rig works, the servo micro motor is used for driving an inner ring of the bearing so as to keep the three-axis acceleration sensor static; a sealing metal cover plate is arranged above the data measurement platform; according to the device, the torque output of the reverse bearing is dynamically adjusted by sensing the rotating speed change of the drill bit in real time, and centrifugal force interference caused by rotating motion to the three-axis acceleration sensor is effectively counteracted. Compared with a traditional scheme, the device has the advantages that the influence of inertia interference on data precision is greatly reduced, and a more reliable near-bit dynamic mechanical parameter source is provided for complex formation drilling.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering geological exploration, and in particular to a drilling device with real-time acceleration feedback. Background Art

[0002] When drilling for complex geological structures and deep resources, traditional drilling methods, due to their reliance on manual experience to control parameters and time-consuming mandatory sampling, have exposed efficiency bottlenecks, escalating costs, increasing accident risks, and difficulty adapting to new demands. There is an urgent need to build a new paradigm for intelligent drilling, break through key technologies, and achieve a paradigm shift in drilling to ensure resource and project safety.

[0003] Traditional drilling technology mainly relies on sensors on the ground or on top of the drill pipe for data collection. Since the signal needs to be transmitted through a long-distance drill string, there is not only significant delay and distortion, but also the inability to accurately capture the dynamic mechanical characteristics of the moment the drill bit contacts the formation. At the same time, the strong inertial force generated by the drill bit during high-speed rotation will directly interfere with the working state of the sensor, causing the acceleration data to drift or even completely fail, seriously affecting the accuracy of the judgment of the drill bit's motion trajectory and formation characteristics. To address this industry problem, this patent proposes an innovative near-drill bit three-axis acceleration real-time monitoring system. Through the embedded integrated design of miniaturized high-precision sensors, the measurement unit is deployed directly in the key force-bearing area behind the drill bit, fundamentally shortening the physical distance of data collection and ensuring the real-time and synchronous acquisition of normal, tangential and vertical acceleration data. Summary of the Invention

[0004] The purpose of the present invention is to provide a drilling device with real-time acceleration feedback in response to the deficiencies of the prior art.

[0005] The objectives of the present invention are achieved through the following technical solutions: a real-time acceleration feedback drilling device, comprising a drill rod, the inner wall of which is provided with a data measurement platform, wherein a servo micro motor and an acceleration measurement system are provided in the data measurement platform; the acceleration measurement system comprises a bearing, wherein a three-axis acceleration sensor is provided at the center of the inner ring of the bearing; when the drilling device is working, the servo micro motor is used to drive the inner ring of the bearing to keep the three-axis acceleration sensor stationary; and a sealing metal cover is provided above the data measurement platform.

[0006] Furthermore, it also includes a soil sampler, one end of which is connected to one end of the drill rod, and the data measurement platform is set on the inner wall of the end of the drill rod connected to the soil sampler.

[0007] Furthermore, it also includes a polyurethane PU rod, which is plug-in connected to the data measurement platform and is clamped and frictionally connected to the outer ring of the bearing.

[0008] Furthermore, the bearing is provided with a bearing anti-slip ring.

[0009] Furthermore, a battery pack is provided in the gap between the inner ring of the bearing and the triaxial acceleration sensor for supplying power to the triaxial acceleration sensor.

[0010] Furthermore, the battery packs are arranged in a ring around the triaxial acceleration sensor and fixed on the inner surface of the inner ring; the battery packs are connected by wires.

[0011] Furthermore, the three-axis acceleration sensor is connected to a Bluetooth signal transmitter for transmitting data measured by the three-axis acceleration sensor in real time; the Bluetooth signal transmitter is fixed on the inner surface of the inner ring of the bearing; The drilling device also includes a signal transmission system and a multifunctional external box, wherein the multifunctional external box is equipped with a ground gateway, a motor power supply battery, and a speed measurement system; The ground gateway is used for protocol conversion and signal transmission of sensor signals; The motor power supply battery is used to power the speed measurement system and the servo micro motor 42; The rotation speed measurement system is used to measure the rotation speed of the drill pipe in real time; The signal transmission system includes a Bluetooth receiving relay station for receiving signals sent by the Bluetooth signal transmitter in real time; The signal transmission line provided in the signal transmission system is connected to the multifunctional external box, and is used to transmit the data measured by the three-axis acceleration sensor to the multifunctional external box in real time; the signal transmission line provided in the signal transmission system is also connected to the servo micro motor, and is used to power the servo micro motor and transmit the rotation speed of the servo micro motor to the multifunctional external box in real time.

[0012] Furthermore, the signal transmission system is fixed on the outer surface of the data measurement platform.

[0013] Furthermore, the at least one fixed steel bar has both ends connected to the inner ring of the bearing, the midpoint of the fixed steel bar is fixedly connected to the output shaft of the servo micromotor, and the midpoint of the fixed steel bar is on the central axis of the inner ring of the bearing. The triaxial acceleration sensor is fixed at the midpoint of the fixed steel bar.

[0014] Furthermore, the servo micro motor is fixed on the sealed metal cover.

[0015] Compared with existing technologies, this invention offers the following advantages: by sensing changes in drill bit speed in real time and dynamically adjusting the torque output of the counter bearing, it effectively offsets the centrifugal force interference caused by rotational motion on the sensor, thereby maintaining the sensor's measurement baseline stability in high-temperature, high-pressure deep-well environments. Compared with traditional solutions, this technology not only significantly improves the response speed of the geosteering system but also significantly reduces the impact of inertial interference on data accuracy, providing a more reliable source of near-bit dynamic mechanical parameters for drilling in complex formations.

[0016] Furthermore, by integrating triaxial acceleration data with formation physical properties, this system can construct a correlation model between drill bit vibration characteristics and lithologic parameters, helping engineers quickly identify geological structural differences such as hard rock formations, fractured zones, and pore structures. This technology seamlessly integrates with existing measurement-while-drilling systems to form a closed-loop control network from data acquisition and real-time analysis to drilling parameter optimization, improving drilling efficiency and safety in complex formations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a layout diagram of a real-time acceleration feedback drilling device provided by the present invention.

[0019] Figure 2 This is a cross-sectional view of the drill pipe.

[0020] Figure 3 Explosion diagram of drilling rig for real-time acceleration feedback.

[0021] Figure 4 This is the internal structure diagram of the data measurement platform.

[0022] Figure 5 Detailed diagram of the acceleration measurement system.

[0023] Figure 6 Top view of the acceleration measurement system.

[0024] Figure 7 Schematic diagram of the signal transmission system.

[0025] Figure 8 This is a schematic diagram with a motor cover.

[0026] In the figure: 1-drill rod; 2-signal transmission system; 3-polyurethane PU rod; 4-motor cover; 5-acceleration measurement system; 6-earth sampler; 7-multi-function external box; 11-data measurement platform; 21-cable guide tube; 22-fixing bolt; 23-Bluetooth receiving relay station; 24-fixed metal cover; 41-sealed metal cover; 42-servo micro motor; 51-fixing bolt; 52-battery pack; 53-fixing steel bar; 54-inner ring; 55-bearing anti-slip ring; 56-bearing ball; 57-outer ring; 58-Bluetooth signal transmitter; 59-three-axis acceleration sensor; 510-wire. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings. Unless there is any conflict, the features of the following embodiments and implementations may be combined with each other.

[0028] A drilling device with real-time acceleration feedback according to the present invention includes a drill rod 1, the inner wall of which is provided with a data measurement platform 11, wherein a servo micro motor 42 and an acceleration measurement system 5 are provided in the data measurement platform 11; the acceleration measurement system 5 includes a bearing, wherein a three-axis acceleration sensor 59 is provided at the center of the inner ring 54 of the bearing; when the drilling device is working, the servo micro motor 42 is used to drive the inner ring 54 of the bearing to keep the three-axis acceleration sensor 59 stationary; a sealing metal cover plate 41 is provided above the data measurement platform 11.

[0029] In one embodiment, a soil sampler 6 is further included, one end of which is connected to one end of the drill rod 1, and the data measurement platform 11 is provided on the inner wall of the end of the drill rod 1 connected to the soil sampler 6. Figure 1 The drill rod 1 is connected to the earth sampler 6, and the two are tightly connected. The data measurement platform 11 is welded to the inner wall of the drill rod 1.

[0030] In one embodiment, see Figure 4 From the outside to the inside, the data measurement platform 11 comprises a polyurethane rod 3 and an acceleration measurement system 5. The polyurethane rod 3 is plugged into the data measurement platform 11 and frictionally engaged with the acceleration measurement system 5, facilitating its removal and position adjustment. A motor cover 4 is located above the data measurement platform 11, with a seal between the two.

[0031] The acceleration measurement system 5 is the core component of the device. It rotates via the servo micro motor 42 in the motor cover 4 and is frictionally connected to the polyurethane PU rod 3.

[0032] In one embodiment, a signal transmission system is provided on the side of the data measurement platform 11, and the signal transmission system 2 is connected to the multifunctional external box 7 on the top of the drill pipe 1 to form a complete measurement system; Figure 7 The signal transmission system 2 includes, from bottom to top, a cable guide 21, a fixing bolt 22, a Bluetooth receiving relay station 23, and a fixed metal cover 24; the fixed metal cover 24 is fixed to the outer surface of the data measurement platform 11 by the fixing bolt 22; the Bluetooth receiving relay station 23 is fixed on the fixed metal cover 24; the signal transmission line in the signal transmission system 2 passes through the cable guide 21 and is connected to the multi-functional external box 7.

[0033] The signal transmission system 2 is provided with a signal transmission line, which is used to transmit the data measured by the three-axis acceleration sensor 59 in real time and to ensure the power supply and signal transmission of the servo micro motor 42.

[0034] In one embodiment, the motor cover 4 is composed of a sealed metal cover 41 and a servo micro motor 42 ; the servo micro motor 42 is provided on the sealed metal cover 41 , wherein the servo micro motor 42 is located in the center of the sealed metal cover 41 .

[0035] In one embodiment, the acceleration measurement system 5 includes a fixing bolt 51, a battery pack 52, a fixing steel bar 53, an inner ring 54, a bearing anti-slip ring 55, a bearing ball 56, an outer ring 57, a Bluetooth signal transmitter 58, a triaxial acceleration sensor 59, and a wire 510; See also Figure 5 The fixed steel bar 53 is welded to the rotating shaft of the servo micro motor 42 . Two fixing bolts 51 are provided on the fixed steel bar 53 , which is fixed to the inner ring 54 through the fixing bolts 51 .

[0036] The battery pack 52 is arranged in a ring around the three-axis acceleration sensor 59 and is located inside the inner ring 54 and fixed to the inner wall of the inner ring 54. The battery pack 52 is connected by a wire 510 to supply power to the three-axis acceleration sensor 59.

[0037] The Bluetooth signal transmitter 58 is adhesively connected to the battery pack 52 on the side wall of the battery pack 52 or the inner surface of the inner ring 54 , and is used to transmit the signal measured by the acceleration measurement system 5 in real time.

[0038] A drill bit is provided at the end of the soil sampler 6, and the three-axis acceleration sensor 59 is used to collect the intimate data of the three-phase acceleration at the drill bit position during the drilling process, and transmit the information to the Bluetooth receiving relay station 23 in real time through the Bluetooth signal transmitter 58. The Bluetooth receiving relay station 23 transmits the information back to the ground information processing platform through a wired connection, wherein the wired connection method can ensure the stability of data transmission.

[0039] In one embodiment, the real-time rotational speed of the servo micro motor 42 is controlled by connecting the signal transmission line in the signal transmission system 2 to the drill rod rotational speed measurement system in the multifunctional external box 7, so as to achieve the purpose of dynamically adjusting the torque output of the reverse bearing and effectively offsetting the centrifugal force interference caused by the rotational motion to the three-axis acceleration sensor 59, that is, keeping the real-time rotational speed of the servo micro motor 42 equal to the real-time rotational speed of the drill rod in opposite directions.

[0040] The multifunctional external box 7 is equipped with a ground gateway, a motor power supply battery, and a speed measurement system; Specifically, the above-mentioned acceleration real-time feedback drilling device is implemented in the following manner: like Figure 1 、 Figure 2 and Figure 8 As shown in the figure, the overall workflow involves measuring the real-time drill pipe speed using the speed measurement system in the multifunctional external box 7. A signal is then sent to the servo micromotor 42 via the cable conduit 21, causing the motor to reverse and counteract the effects of centrifugal force. The measured triaxial acceleration information is transmitted back to the ground processing center via a wireless, wired, and wireless method. A correlation model between the drill bit's vibration characteristics and lithologic parameters is constructed in real time, helping engineers quickly identify geological structural differences such as hard rock formations, fractured zones, and pore structures.

[0041] like Figure 3 As shown, the data measurement platform 11 is welded to Figure 1 The data measurement platform 11 is non-circular on the inner wall of the end of the drill pipe where it connects to the soil sampler 6. This ensures that mud and water can flow smoothly through the drill pipe during drilling, while also providing cooling for the device. The polyurethane rod 3 is inserted into the slot of the data measurement platform 11, followed by the acceleration measurement system 5, which is the main body of the device. The acceleration measurement system 5 is welded to the rotating shaft of the motor cover 4 to form a single unit. The wires in the cable conduit 21 are connected to the servo micromotor 42 to ensure power to the micromotor 42. Finally, the signal transmission system 2 is welded together.

[0042] like Figure 5 and Figure 6 As shown, the installation steps of the main body acceleration measurement system 5 of the equipment are as follows. Its exterior is composed of 10 ball bearings, and a bearing anti-slip ring 55 is used to ensure the operating stability of the entire system. The battery pack 52 inside the inner ring 54 is arranged in a ring around the triaxial acceleration sensor 59. The battery packs 52 are connected by wires 510, and the Bluetooth signal transmitter 58 is glued to the side wall of the battery pack 52. The battery pack 52 and the triaxial acceleration sensor 59 are restrained by fixing bolts 51 and fixing steel bars 53. The triaxial acceleration sensor 59 is located at the center of the main body acceleration measurement system 5. Through the triaxial acceleration sensor 59, intimate data of the drill bit and the soil or rock cutting process can be quickly measured and transmitted back to the ground through the cable conduit 21.

[0043] The above embodiments are intended only to illustrate the design concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of protection of the present invention is not limited to the above embodiments. Therefore, any equivalent changes or modifications made based on the principles and design concepts disclosed in the present invention are within the scope of protection of the present invention.

Claims

1. A drilling device with real-time acceleration feedback, characterized in that: The drilling device comprises a drill rod (1), wherein the inner wall of the drill rod (1) is provided with a data measurement platform (11), wherein a servo micro motor (42) and an acceleration measurement system (5) are provided in the data measurement platform (11); the acceleration measurement system (5) comprises a bearing, wherein a three-axis acceleration sensor (59) is provided at the center of an inner ring (54) of the bearing; when the drilling device is working, the servo micro motor (42) is used to drive the inner ring (54) of the bearing to keep the three-axis acceleration sensor (59) stationary; and a sealing metal cover plate (41) is provided above the data measurement platform (11).

2. The real-time acceleration feedback drilling device according to claim 1, characterized in that: It also includes a soil extractor (6), one end of which is connected to one end of the drill rod (1), and the data measurement platform (11) is provided on the inner wall of the end of the drill rod (1) connected to the soil extractor (6).

3. The real-time acceleration feedback drilling device according to claim 1, characterized in that: It also includes a polyurethane PU rod (3), which is plug-in connected to the data measurement platform and is snap-fitted and frictionally connected to the outer ring (57) of the bearing.

4. The real-time acceleration feedback drilling device according to claim 1, characterized in that: The bearing is provided with a bearing anti-slip ring (55).

5. The real-time acceleration feedback drilling device according to claim 1, characterized in that: A battery pack (52) is provided in the gap between the inner ring (54) of the bearing and the three-axis acceleration sensor (59) for supplying power to the three-axis acceleration sensor (59).

6. The real-time acceleration feedback drilling device according to claim 5, characterized in that: The battery packs (52) are arranged in a ring around the three-axis acceleration sensor (59) and fixed on the inner surface of the inner ring (54); the battery packs (52) are connected via wires (510).

7. The acceleration real-time feedback drilling device according to claim 1, characterized in that: The three-axis acceleration sensor (59) is connected to a Bluetooth signal transmitter (58) for transmitting data measured by the three-axis acceleration sensor (59) in real time; the Bluetooth signal transmitter (58) is fixed on the inner surface of the inner ring (54) of the bearing; The drilling device further comprises a signal transmission system (2) and a multifunctional external box (7), wherein the multifunctional external box (7) is provided with a ground gateway, a motor power supply battery, and a rotation speed measurement system; The ground gateway is used for protocol conversion and signal transmission of sensor signals; The motor power supply battery is used to power the speed measurement system and the servo micro motor (42); The rotation speed measurement system is used to measure the rotation speed of the drill pipe (1) in real time; The signal transmission system (2) includes a Bluetooth receiving relay station (23) for receiving signals sent by a Bluetooth signal transmitter (58) in real time; The signal transmission line provided in the signal transmission system (2) is connected to the multifunctional external box (7) for transmitting data measured by the three-axis acceleration sensor (59) to the multifunctional external box (7) in real time; the signal transmission line provided in the signal transmission system (2) is also connected to the servo micro motor (42) for supplying power to the servo micro motor (42) and transmitting the rotation speed of the servo micro motor (42) to the multifunctional external box (7) in real time.

8. The real-time acceleration feedback drilling device according to claim 7, characterized in that: The signal transmission system (2) is fixed on the outer surface of the data measurement platform (11).

9. The real-time acceleration feedback drilling device according to claim 1, characterized in that: The at least one fixed steel bar (53) has two ends connected to the inner ring (54) of the bearing, a midpoint of the fixed steel bar (53) is fixedly connected to the output shaft of the servo micro motor (42), and the midpoint of the fixed steel bar (53) is on the central axis of the inner ring (54) of the bearing.

10. The real-time acceleration feedback drilling device according to claim 1, characterized in that: The servo micro motor (42) is fixed on the sealing metal cover (41).

Images