阅读说明：本技术 微钻实验平台 (Micro-drilling experiment platform ) 是由 吴景华 王岩 刘华南 谢俊革 高成梁 戚波 刘明东 王思文 谭文浩 于 2020-12-20 设计创作，主要内容包括：一种微钻实验平台,包括回转系统、液压给进系统、钻井液循环系统、移动与夹持装置、数据采集及控制系统。回转系统的同步带传递扭矩,主轴转速可无极调速。液压给进系统提供钻进所需钻压,钻压可调节,主轴钻具沿垂直方向上下移动。钻井液循环系统使钻井液能循环使用,移动与夹持装置包括能夹持块状岩样和圆柱状岩样。数据采集及控制系统可采集并调控进尺深度、转速、工作油压、泵量等参数。本发明结构简单、运行可靠,能够精准显示主要钻进参数。可用来评价钻头以及钻头与地层适应性,判定不同岩样(地层特点)有效选择钻进规程参数之间定量关系等,也可用于教学、科研。(A micro-drilling experimental platform comprises a rotary system, a hydraulic feeding system, a drilling fluid circulating system, a moving and clamping device and a data acquisition and control system. The synchronous belt of the rotary system transmits torque, and the rotating speed of the main shaft can be steplessly regulated. The hydraulic feeding system provides the bit pressure required by drilling, the bit pressure can be adjusted, and the main shaft drilling tool moves up and down along the vertical direction. The drilling fluid circulation system enables the drilling fluid to be recycled, and the moving and clamping device can clamp blocky rock samples and cylindrical rock samples. The data acquisition and control system can acquire and regulate parameters such as depth of footage, rotating speed, working oil pressure, pump capacity and the like. The invention has simple structure and reliable operation, and can accurately display main drilling parameters. The method can be used for evaluating the adaptability of the drill bit and the drill bit to the stratum, judging the quantitative relation among the drilling procedure parameters effectively selected by different rock samples (stratum characteristics) and the like, and can also be used for teaching and scientific research.)

1. The utility model provides a bore experiment platform a little which characterized in that: the drilling fluid circulating system comprises a rotary system, a hydraulic feeding system, a drilling fluid circulating system, a moving and clamping device and a data acquisition and control system;

the rotary system comprises an arc tooth type synchronous belt and a belt pulley (5), a motor (6), a power head (8), a core tube and a drill bit (24), wherein the motor (6) is connected with the power head (8) through the arc tooth type synchronous belt and the belt pulley (5), the power head (8) is connected with a morse shank, the morse shank is connected with the core tube and the drill bit (24), and a clamp spring is arranged in the drill bit;

a motor (6) provides torque, and the arc tooth-shaped synchronous belt and the belt wheel (5) transmit the torque to the power head (8) to drive the core tube and the drill bit (24) to rotate to crush rock;

the hydraulic feeding system comprises a hydraulic station (15) and a hydraulic cylinder (22), wherein an oil inlet and an oil return port of the hydraulic station (15) are connected with the hydraulic cylinder (22), the hydraulic cylinder (22) is connected with a bearing platform (7), the bearing platform (7) is connected with a sliding block, the sliding block is connected with a linear guide rail (3), the bearing platform (7) is connected with a power head (8), and the bearing platform (7) is connected with a tensioning device of a motor (6); the hydraulic station (15) provides working pressure for the hydraulic cylinder (22), and the hydraulic cylinder (22) pushes the bearing platform (7) to move up and down on the linear guide rail (3) so as to provide drilling pressure required by rock crushing;

the drilling fluid circulating system comprises a multistage filtering and settling tank (26), an engineering sewage submersible electric pump (27) is installed in the multistage filtering and settling tank (26), the engineering sewage submersible electric pump (27) is connected with a high-pressure water pipe (17), the high-pressure water pipe (17) is connected with a mechanical seal assembly (4), the mechanical seal assembly (4) is connected with a power head (23), and the mechanical seal assembly (4) is fixed with an arc tooth-shaped synchronous belt and a belt pulley (5) through a flange plate (46); an electronic turbine flowmeter (19) is arranged on the high-pressure water pipe (17), and a control water valve is arranged on the high-pressure water pipe (17); drilling fluid flows through the mechanical seal assembly (4), the power head (8), the core tube and the drill bit (24) through the high-pressure water pipe (17), enters the blowout preventer (12), and flows back to the multistage filtering and settling tank (26) through the drilling fluid circulating water pipe (25);

the rock sample clamping and moving device comprises a cylindrical rock sample clamping device (11), a block-shaped rock sample clamping device (23), a blowout preventer (12) and a cross sliding table (13); a blowout preventer (12) is arranged on the cross sliding table (13), and a cylindrical rock sample clamping device (11) and a blocky rock sample clamping device (23) are arranged in the blowout preventer (12);

the mechanical seal assembly (4) comprises a sleeve (41), a sleeve cover (42), a deep groove ball bearing (43) and a water pipe (44), wherein the sleeve cover (42) is sleeved at the upper end of the sleeve (41), the water pipe (44) penetrates through the sleeve cover (42) and is positioned in the sleeve (41), the deep groove ball bearing (43) is sleeved on the water pipe (44) and is positioned on the inner side of the sleeve cover (42), and a space between the water pipe (44) inside the sleeve (41) and the inner wall of the sleeve (41) is a mechanical seal installation position (45);

the data acquisition and control system comprises a touch control operation screen (21), an encoder (9), a pressure sensor (14), an upper limit sensor (2), a lower limit sensor (10), a depth measuring caliper (20), a frequency converter, a PLC, a BD board and an electronic turbine flowmeter (19); the encoder (9) and the depth measuring caliper (20) can measure the depth of the depth, and the encoder (9) can set the rapid descending height of the drill bit through PLC programming; the pressure sensor (14) can measure the working oil pressure, the upper limit sensor (2) and the lower limit sensor (10) can control the limit, the frequency converter can adjust the rotating speed, the electronic turbine flowmeter (19) can measure the pump capacity, and the PLC programming can set a data acquisition and regulation element to display data and operation on the touch control operation screen (21).

2. The micro-drilling experimental platform according to claim 1, wherein: the touch control operation screen (21) is connected to the micro-drill experiment platform workbench, and the operation angle can be adjusted through the touch control operation screen (21).

3. The micro-drilling experimental platform according to claim 1, wherein: the multistage filtering and settling tank (26) is provided with three tank bodies and is provided with two filtering devices.

4. The micro-drilling experimental platform according to claim 1, wherein: the bottom of the micro-drill experiment platform is provided with a universal wheel and a fixed seat (16).

5. The micro-drilling experimental platform according to claim 1, wherein: the bottom of the multistage filtering and settling tank (26) is provided with universal wheels.

Technical Field

The invention relates to a micro-drilling experimental platform device, in particular to an experimental platform for simulating field drilling. The method can obtain main drilling parameters, evaluate the adaptability of the drill bit and the drill bit to the stratum, judge the quantitative relation among the drilling rule parameters effectively selected by different rock samples (stratum characteristics), and the like.

Background

Reasonable combined drilling methods and regulation parameters need to be selected for geological drilling, and the currently economical and feasible method is to use a micro-drilling experimental platform device to simulate indoor drilling and sampling of rock samples and obtain main drilling parameters such as spindle rotation speed, drilling pressure, pump capacity and the like, so that the combined drilling method adaptive to the characteristics of the stratum is selected. The functions of drilling parameter data acquisition and regulation are realized by using a controllable programming system and a measuring element.

Disclosure of Invention

The invention aims to provide a micro-drilling experiment platform for indoor simulated drilling, which is simple in structure and reliable in operation and can accurately acquire experiment data. The drill bit and the core barrel can be replaced as required, and the rotating speed of the main shaft, the working oil pressure, the pump amount and the depth of the footage can be acquired and regulated. The mechanical seal assembly ensures that the main shaft rotates and the high-pressure water pipe remains relatively stationary when drilling fluid is pumped. The two rock sample clamping devices can clamp blocky and cylindrical rock samples, and a blowout preventer is arranged outside the clamping devices. The multistage filtering and precipitating tank is designed, so that the precipitated rock powder can be effectively filtered. The linear guide rail is matched with the hydraulic cylinder to realize the linear reciprocating motion of the main shaft drilling tool. Intelligent drilling control is realized, and an automatic mode and a manual mode are set.

A micro-drilling experimental platform comprises a rotary system, a hydraulic feeding system, a drilling fluid circulating system, a moving and clamping device and a data acquisition and control system;

the rotary system comprises an arc tooth type synchronous belt, a belt wheel, a motor, a power head, a core tube and a drill bit, wherein the motor is connected with the power head through the arc tooth type synchronous belt and the belt wheel, the power head is connected with a Morse cutter handle, the Morse cutter handle is connected with the core tube and the drill bit, and a clamp spring is arranged in the drill bit. The motor provides torque, the arc tooth-shaped synchronous belt and the belt wheel transmit the torque to the power head, and the core tube and the drill bit are driven to rotate to crush rock.

The hydraulic feeding system comprises a hydraulic station and a hydraulic cylinder, an oil inlet and an oil return port of the hydraulic station are connected with the hydraulic cylinder, the hydraulic cylinder is connected with a bearing platform, the bearing platform is connected with a sliding block, the sliding block is connected with a linear guide rail, the bearing platform is connected with a power head, and the bearing platform is connected with a motor tensioning device. The hydraulic station provides working pressure for the hydraulic cylinder, and the hydraulic cylinder pushes the bearing platform to move up and down on the linear guide rail so as to provide drilling pressure required by rock crushing.

The drilling fluid circulating system comprises a multistage filtering and settling tank, an engineering sewage submersible electric pump is arranged in the multistage filtering and settling tank and is connected with a high-pressure water pipe, the high-pressure water pipe is connected with a mechanical seal assembly, the mechanical seal assembly is connected with a power head, and the mechanical seal assembly is fixed with an arc tooth-shaped synchronous belt and a belt wheel through a flange plate. The high-pressure water pipe is provided with an electronic turbine flowmeter and a control water valve. The drilling fluid flows through the mechanical seal assembly, the power head, the core tube and the drill bit through the high-pressure water pipe, enters the blowout preventer, and flows back to the multistage filtering and settling tank through the drilling fluid circulating water pipe.

The rock sample clamping and moving device comprises a cylindrical rock sample clamping device, a block-shaped rock sample clamping device, a blowout preventer and a cross sliding table; and a blowout preventer is arranged on the cross sliding table, and a cylindrical rock sample clamping device and a blocky rock sample clamping device are arranged in the blowout preventer.

The mechanical seal assembly comprises a sleeve, a sleeve cover, a deep groove ball bearing and a water pipe, wherein the sleeve cover is sleeved at the upper end of the sleeve, the water pipe penetrates through the sleeve cover to be positioned in the sleeve, the deep groove ball bearing is sleeved on the water pipe and positioned on the inner side of the sleeve cover, and the space between the water pipe inside the sleeve and the inner wall of the sleeve is a mechanical seal installation position.

The multistage filtering and settling tank is provided with three tank bodies and is provided with two filtering devices.

The data acquisition and control system comprises a touch control operation screen, an encoder, a pressure sensor, an upper limit sensor, a lower limit sensor, a depth measuring caliper, a frequency converter, a PLC, a BD board and an electronic turbine flowmeter; the encoder and the depth measuring caliper can measure the depth of the depth, and the encoder can set the rapid descending height of the drill bit through the programming of the PLC; the pressure sensor can measure the working oil pressure, the upper limit sensor and the lower limit sensor can control the limit, the frequency converter can adjust the rotating speed, the electronic turbine flowmeter can measure the pump capacity, the PLC programming can set a data acquisition and regulation element, and data and operation are displayed on the touch control operation screen.

The data acquisition and control system further comprises a distribution box, wherein the distribution box comprises a PLC (programmable logic controller), a frequency converter, a V power supply, a motor alternating current contactor and a water pump alternating current contactor, the touch control operation screen is connected with a PLC (programmable logic controller), and the PLC is connected with a data acquisition and control element.

The frequency converter is connected with the motor and the PLC, and realizes stepless speed regulation of the main shaft drilling tool.

PLC and 3M hold-in range band pulley are connected to the encoder, 3M hold-in range band pulley connects the 3M hold-in range, 3M hold-in range and leg joint, the support is connected with load-bearing platform, and load-bearing platform reciprocates and drives the hold-in range and rotate, the code. The data acquisition and control of the main shaft drilling tool depth can be realized.

The electronic turbine flow meter realizes the display of the pump volume (flushing liquid flow).

The control system uses PLC programming, which includes an automatic mode and a manual mode.

The automatic mode comprises the steps of setting the fast descending height and the rotating speed of the main shaft, fast descending to the designated height, rotating the main shaft according to the set speed, automatically pumping drilling fluid, drilling to the bottom of a rock sample, and automatically carrying a rock core to ascend. The automatic mode comprises one-key stop, and working oil pressure, depth of penetration, pump amount and main shaft rotating speed are displayed.

The manual mode comprises manual starting and one-key stopping, the main shaft and the water pump can be started and stopped in the manual mode, and the main shaft can be controlled to ascend, descend, stop and control the rotating speed of the main shaft in the manual mode.

The hydraulic station can regulate and control working pressure, and the micro-drilling experiment platform is provided with an upper limiting sensor and a lower limiting sensor to control the stroke.

The bottom of the micro-drill experiment platform is provided with a universal wheel and a fixed seat.

The bottom of the multistage filtering and settling tank is provided with universal wheels, so that the multistage filtering and settling tank is convenient to move.

The touch control operation screen is connected to the micro-drill experiment platform workbench, and the operation angle can be adjusted through the touch control operation screen.

The invention has the beneficial effects that:

the invention has simple structure and reliable operation, and can accurately display main drilling parameters. The method can be used for evaluating the adaptability of the drill bit and the drill bit to the stratum, judging the quantitative relation among the drilling procedure parameters effectively selected by different rock samples (stratum characteristics) and the like, and can also be used for teaching and scientific research.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a circuit diagram of the present invention.

FIG. 3 is a front view of the multistage filtration settling tank of the present invention

FIG. 4 is a top view of the multistage filter settling tank of the present invention,

Fig. 5 is a left side view of the multistage filtration settling tank of the present invention.

FIG. 6 is a top view of the clamping device and blowout preventer of the present invention.

Fig. 7 is a sectional view a-a in fig. 6.

Fig. 8 is a sectional view taken along line B-B in fig. 6.

FIG. 9 is a cross-sectional view of the mechanical seal assembly of the present invention.

Wherein: 2-an upper limit sensor; 3-a linear guide rail; 4-a mechanical seal assembly; a circular arc tooth type synchronous belt and a belt wheel; 6-an electric motor; 7-a load-bearing platform; 8-a power head; 9-a rotary encoder; 10-a lower limit sensor; 11-a cylindrical rock sample holding device; 12-a blowout preventer; 13-a cross slide; 14-a pressure sensor; 15-a hydraulic station; 16-universal wheel and fixed seat; 17-a high-pressure water pipe; 18-a protective housing; 19-electronic turbine flow meter; 20-depth measuring caliper; 21-touch control operation screen; 22-hydraulic cylinder; 23-a block rock sample holding device; 24-core barrel and drill bit; 25-drilling fluid circulating water pipe; 26-a multistage filtration settling tank; 27-engineering sewage submersible electric pump.

Detailed Description

As shown in fig. 1, 3, 4 and 5, a micro-drilling experimental platform comprises a rotation system, a hydraulic feeding system, a drilling fluid circulating system, a moving and clamping device and a data acquisition and control system;

the rotary system comprises an arc tooth type synchronous belt and belt wheel 5, a motor 6, a power head 8, a core tube and a drill bit 24, wherein the motor 6 is connected with the power head 8 through the arc tooth type synchronous belt and the belt wheel 5, the power head 8 is connected with a morse knife handle, the morse knife handle is connected with the core tube and the drill bit 24, and a clamp spring is arranged in the drill bit. The motor 6 provides torque, the arc tooth-shaped synchronous belt and the belt wheel 5 transmit the torque to the power head 8, and the core tube and the drill bit 24 are driven to rotate to crush rock.

The hydraulic feeding system comprises a hydraulic station 15 and a hydraulic cylinder 22, an oil inlet and an oil return port of the hydraulic station 15 are connected with the hydraulic cylinder 22, the hydraulic cylinder 22 is connected with a bearing platform 7, the bearing platform 7 is connected with a sliding block, the sliding block is connected with a linear guide rail 3, the bearing platform 7 is connected with a power head 8, and the bearing platform 7 is connected with a tensioning device of a motor 6. The hydraulic station 15 provides working pressure to the hydraulic cylinder 22, and the hydraulic cylinder 22 pushes the bearing platform 7 to move up and down on the linear guide rail 3, so that the required drilling pressure for rock crushing is provided.

The drilling fluid circulating system comprises a multistage filtering and settling tank 26, an engineering sewage submersible electric pump 27 is arranged in the multistage filtering and settling tank 26, the engineering sewage submersible electric pump 27 is connected with a high-pressure water pipe 17, the high-pressure water pipe 17 is connected with a mechanical seal assembly 4, the mechanical seal assembly 4 is connected with a power head 23, and the mechanical seal assembly 4 is fixed with an arc tooth-shaped synchronous belt and a belt wheel 5 through a flange 46. The high-pressure water pipe 17 is provided with an electronic turbine flowmeter 19, and the high-pressure water pipe 17 is provided with a control water valve. The drilling fluid flows through the mechanical seal assembly 4, the power head 8, the core barrel and the drill bit 24 through the high-pressure water pipe 17, enters the blowout preventer 12, and flows back to the multistage filtering and settling tank 26 through the drilling fluid circulating water pipe 25.

As shown in fig. 6, 7 and 8, the rock sample clamping and moving device comprises a cylindrical rock sample clamping device 11, a block-shaped rock sample clamping device 23, a blowout preventer 12 and a cross sliding table 13; and a blowout preventer 12 is arranged on the cross sliding table 13, and a cylindrical rock sample clamping device 11 and a block-shaped rock sample clamping device 23 are arranged in the blowout preventer 12.

As shown in fig. 9, the mechanical seal assembly 4 includes a sleeve 41, a sleeve cover 42, a deep groove ball bearing 43 and a water pipe 44, the sleeve cover 42 is sleeved on the upper end of the sleeve 41, the water pipe 44 passes through the sleeve cover 42 and is located in the sleeve 41, the deep groove ball bearing 43 is sleeved on the water pipe 44 and is located on the inner side of the sleeve cover 42, and a space between the water pipe 44 inside the sleeve 41 and the inner wall of the sleeve 41 is a mechanical seal installation site 45.

As shown in fig. 3 and 4, the multistage filter settling tank 26 has three tanks, and two filters are provided.

As shown in fig. 1 and fig. 2, the data acquisition and control system includes a touch control operation screen 21, an encoder 9, a pressure sensor 14, an upper limit sensor 2, a lower limit sensor 10, a depth measuring caliper 20, a frequency converter, a PLC, a BD board, and an electronic turbine flowmeter 19; the encoder 9 and the depth measuring caliper 20 can measure the depth of the depth, and the encoder 9 can set the rapid descending height of the drill bit through PLC programming; the pressure sensor 14 can measure the working oil pressure, the upper limit sensor 2 and the lower limit sensor 10 can control the limit, the frequency converter can adjust the rotating speed, the electronic turbine flowmeter 19 can measure the pump amount, and the PLC programming can set a data acquisition and regulation element, so that the data and the operation are displayed on the touch control operation screen 21.

The data acquisition and control system further comprises a distribution box, wherein the distribution box comprises a PLC (programmable logic controller), a frequency converter, a 24V power supply, a motor alternating current contactor and a water pump alternating current contactor, the touch control operation screen 21 is connected with a PLC (programmable logic controller) controllable programmer, and the controllable programmer is connected with a data acquisition and control element.

The frequency converter is connected with the motor 6 and the PLC, and realizes stepless speed regulation of the main shaft drilling tool.

PLC and 3M hold-in range band pulley are connected to encoder 9, 3M hold-in range band pulley connects the 3M hold-in range, 3M hold-in range and leg joint, support and bearing platform 7 are connected, and bearing platform 7 reciprocates and drives the hold-in range and rotate, and encoder 9 counts. The data acquisition and control of the main shaft drilling tool depth can be realized.

The electronic turbine flow meter 19 realizes a pump volume (flushing fluid flow) display.

The control system uses PLC programming, which includes an automatic mode and a manual mode.

The automatic mode comprises the steps of setting the fast descending height and the rotating speed of the main shaft, fast descending to the designated height, rotating the main shaft according to the set speed, automatically pumping drilling fluid, drilling to the bottom of a rock sample, and automatically carrying a rock core to ascend. The automatic mode comprises one-key stop, and working oil pressure, depth of penetration, pump amount and main shaft rotating speed are displayed.

The manual mode comprises manual starting and one-key stopping, the main shaft and the water pump can be started and stopped in the manual mode, and the main shaft can be controlled to ascend, descend, stop and control the rotating speed of the main shaft in the manual mode.

The hydraulic station can regulate and control working pressure, and the micro-drilling experiment platform is provided with an upper limiting sensor and a lower limiting sensor to control the stroke.

And the bottom of the micro-drill experiment platform is provided with universal wheels and a fixed seat 16.

The bottom of the multistage filtering and settling tank 26 is provided with universal wheels, so that the multistage filtering and settling tank is convenient to move.

The touch control operation screen 21 is connected to the micro-drill experiment platform workbench, and the touch control operation screen 21 can adjust the operation angle.