AU2020100280A4 - Testing Device for Measuring Rock Drillability - Google Patents
Testing Device for Measuring Rock Drillability Download PDFInfo
- Publication number
- AU2020100280A4 AU2020100280A4 AU2020100280A AU2020100280A AU2020100280A4 AU 2020100280 A4 AU2020100280 A4 AU 2020100280A4 AU 2020100280 A AU2020100280 A AU 2020100280A AU 2020100280 A AU2020100280 A AU 2020100280A AU 2020100280 A4 AU2020100280 A4 AU 2020100280A4
- Authority
- AU
- Australia
- Prior art keywords
- bit
- rock
- testing device
- drillability
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000011435 rock Substances 0.000 title claims abstract description 84
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 57
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B45/00—Measuring the drilling time or rate of penetration
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
Abstract The invention discloses a testing device for measuring rock drillability, which comprises a frame, and a driving device, a rock breaking weight-on-bit device and a micro drill bit rock breaking weight-on-bit measuring mechanism which are arranged in the frame; the rock breaking weight-on-bit device comprises a telescopic drill rod and a micro drill bit, one end of the telescopic drill rod is connected with an output end of the driving device, and the other end is connected with the micro drill bit; and the micro drill bit rock breaking weight-on-bit measuring mechanism comprises a pressure sensor arranged on the telescopic drill rod, a torque sensor and a displacement sensor arranged on a walking beam lifting mechanism. The invention solves the technical problem that rock drillability is difficult to evaluate, and has the advantages of being novel in design, easy and convenient to operate and fully automatic in experimental measurement, thus greatly improving the efficiency of single experimental test and saving experiment time and cost. 13g1 Fig. 1
Description
Testing Device for Measuring Rock Drillability
Technical Field
The invention relates to the technical field of rock drillability tests, in particular to a testing device for measuring rock drillability.
Background Art
In the prior art, the most important thing in oil/natural gas drilling engineering is the process of rock breaking and borehole drilling, and the basic properties of formation rock are objective factors affecting rock breaking efficiency. With the rapid development of drilling technology and theory, it is found that the drillability of rock is very complicated, and it is not accurate to evaluate the drillability of rock directly according to some physical properties of rock. The accuracy of understanding the properties of rock determines the rationality of the actual drilling process, and the drillability of rock is closely related to the drilling technology. During the measurement of the drillability of rock, the accurate and real data can be obtained only by drilling and breaking actual rock. Therefore, on the one hand, the physical and mechanical properties of rock and the law of rock breakage should be fully studied; and on the other hand, formation lithology should be accurately predicted.
The concept of rock drillability was first proposed in 1927 by Tillson at the Columbia University Mining Engineering Conference. It refers to the difficulty of rock being broken by rock breaking tools under certain technical conditions. A direct method is to characterize the drillability of rock by using the drilling index of a micro drill bit. With laboratory experimental equipment and testing tools, simulated drilling experiment is conducted on the rock taken out from the actual drilling formation, and the micro drilling speed when a drilling tool breaks the rock is used to reflect the comprehensive index of a certain drilling condition and technology. The micro-drilling method can truly reflect the drillability range of the drilled formation, provides powerful parameters for bit selection and geological stratification, and is also a reliable basis for verifying the accuracy of other drillability evaluation methods. At present, the Oil and Gas Industry Standard of the People's Republic of China (SY/T5426-2016) stipulates the method of rock drillability measurement and classification, but does not reveal in depth the physical and mechanical properties of rock, the rock breaking law, and prediction of formation lithology to guide bit selection, which are key problems needing to be solved urgently in drilling engineering.
Summary of the Invention
The purpose of the invention is to provide a testing device for measuring rock drillability so as to solve the technical problem that rock drillability is difficult to evaluate in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
A testing device for measuring rock drillability comprises a frame, and a driving device, a rock breaking weight-on-bit device and a micro drill bit rock breaking weight-on-bit measuring mechanism which are arranged in the frame;
the rock breaking weight-on-bit device comprises a telescopic drill rod and a micro drill bit, one end of the telescopic drill rod is connected with an output end of a variable speed motor, and the other end is connected with the micro drill bit;
and the micro drill bit rock breaking weight-on-bit measuring mechanism comprises a pressure sensor arranged on the telescopic drill rod, a torque sensor and a walking beam lifting mechanism, and the walking beam lifting mechanism is provided with a displacement sensor.
Alternatively or preferably, the driving device is a variable speed motor.
Alternatively or preferably, a brake is further arranged on an output shaft of the variable speed motor.
Alternatively or preferably, both ends of the walking beam lifting mechanism are connected with a rail in an upright post of the frame through gears respectively.
Alternatively or preferably, a jacket is arranged inside the upper end of the frame, and a jacket fixing end of the jacket is fixed at the top of the frame.
Alternatively or preferably, a material receiving plate is arranged on the telescopic drill rod and located below the micro drill bit.
Alternatively or preferably, one side of the upright post of the frame is provided with a displacement limiter for limiting the walking beam lifting mechanism.
Alternatively or preferably, the micro drill bit may be a cone bit or a PDC bit; the lower end of a main body of the cone bit is provided with a first plug pin type joint which is convenient to replace, the middle of a fixed pressing plate on the left side of the upper end is provided with a shaft, a plurality of groups of blades are arranged in the shaft, a plurality of supporting gaskets which support the load of the plurality of groups of blades are arranged between the cones, and the right side is provided with a detachable pressing plate for fixing the blades; the middle of the main body of the cone bit is provided with a first screw hole, and the first screw hole is provided with a first screw for fixing the detachable pressing plate; and the lower end of a main body of the PDC bit is provided with a second plug pin type joint which is convenient to replace, the upper end is provided with a second screw hole, a pressing plate and a composite PDC sheet, the second screw hole is provided with a second screw for fixing the pressing plate, and the pressing plate fixes the composite PDC sheet.
Based on the above technical scheme, the embodiment of the invention may at least generate the following technical effects:
The telescopic drill rod in the invention is connected to the variable speed motor so as to drive the micro drill bit to rotate. The walking beam lifting mechanism drives the telescopic drill rod to ascend and maintain a certain load, so that the micro drill bit is driven to move upwards and press into the rock to break it. The rock core is a cylinder with a diameter of 50 mm and a height of 70 mm, which is fixed through screws on both sides of the jacket, the jacket fixing end is fixed at the top of the frame, and the rock is clamped through the screws. The micro drill bit is placed under the jacket in an inverted mode, the material receiving plate is arranged at the same time, broken rock debris is separated and collected by gravity to form the repeated breaking condition, and the safety and cleanness of an instrument are ensured. The displacement sensor, the pressure sensor and the torque sensor on a micro-drilling test bench are used to test the micro drill bit. By changing the weight-on-bit and the rotating speed, the influence relation of the rock drilling speed, the weight-on-bit and the rotating speed under a single factor condition is obtained. By randomly combining the weight-on-bit and the rotating speed and changing drilling, the rate of penetration of the rock is obtained. The invention is novel in design, easy and convenient to operate, and fully automatic in experimental measurement. Multiple groups of rock drillability values are tested through a single deep drilling experiment, so that the efficiency of single experimental test is greatly improved, thus saving experiment time and cost.
2020100280 25 Feb 2020
Brief Description of the Drawings
In order to more clearly explain the embodiment of the invention or the technical scheme in the prior art, the drawings needed in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative labor.
Fig. 1 is the structural diagram of a main body of the invention;
Fig. 2 is the structural diagram of a cone bit in the invention;
Fig. 3 is the structural diagram of a PDC drill bit in the invention;
Fig. 4 is an experimental data graph of rock drillability of a micro cone bit under different weights-on-bit in the experimental process of the invention;
Fig. 5 is a curve comparison graph of bottoming drillability before and after processing in the experimental process of the invention;
Fig. 6 is a graph of weight-on-bit per unit diameter and per unit area in the experimental process of the invention;
Fig. 7 is a comparison graph of drilling speed between experimental test and theoretical calculation in the experimental process of the invention;
Fig. 8 is a comparison graph of drillability grade between experimental test and theoretical calculation in the experimental process of the invention.
In the figures: 1-frame; 2-torque sensor; 3-pressure sensor; 4-telescopic drill rod; 5-walking beam lifting mechanism; 6-material receiving plate; 7-micro drill bit; 8-jacket; 9-jacket fixing end; 10-variable speed motor; 11-brake; 12-displacement limiter; 13-rock core; 16-first plug pin type joint; 17-cone bit; 18-first screw; 19-detachable pressing plate; 20-supporting gasket; 21-blade; 22-pressing plate; 23-second screw hole; 24-composite PDC sheet; 25-displacement sensor; 26-PDC bit; 27-second plug pin type joint.
2020100280 25 Feb 2020
Detailed Description of the Invention
In order to make the purpose, technical scheme and advantages of the invention clearer, the technical scheme of the invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope protected by the invention.
A testing device for measuring rock drillability comprises a frame 1, and a driving device, a rock breaking weight-on-bit device and a micro drill bit rock breaking weight-on-bit measuring mechanism which are arranged in the frame 1;
the rock breaking weight-on-bit device comprises a telescopic drill rod 4 and a micro drill bit 7, one end of the telescopic drill rod 4 is connected with an output shaft of a variable speed motor 10, and the other end is connected with the micro drill bit 7; and the micro drill bit rock breaking weight-on-bit measuring mechanism comprises a pressure sensor 3 arranged on the telescopic drill rod 4, a torque sensor 2 and a walking beam lifting mechanism 5, and the walking beam lifting mechanism 5 is provided with a displacement sensor 25.
As an alternative embodiment, the driving device is a variable speed motor 10.
As an alternative embodiment, a brake 11 is further arranged on the output shaft of the variable speed motor 10.
As an alternative embodiment, both ends of the walking beam lifting mechanism 5 are connected with a rail in an upright post of the frame 1 through gears respectively.
As an alternative embodiment, a jacket 8 is arranged inside the upper end of the frame 1, and a jacket fixing end 9 of the jacket 8 is fixed at the top of the frame.
As an alternative embodiment, a material receiving plate 6 is arranged on the telescopic drill rod 4 and located below the micro drill bit 7, so that broken rock debris is separated and collected by gravity to form the repeated breaking condition, and the safety and cleanness of an instrument are ensured.
2020100280 25 Feb 2020
As an alternative embodiment, one side of the upright post of the frame 1 is provided with a displacement limiter 12 for limiting the walking beam lifting mechanism 5.
As an alternative embodiment, the micro drill bit 7 may be a cone bit 17 or a PDC bit 26; the lower end of a main body of the cone bit 17 is provided with a first plug pin type joint 16 which is convenient to replace, the middle of a fixed pressing plate on the left side of the upper end is provided with a shaft, eight groups of blades 21 are arranged in the shaft, seven supporting gaskets 20 which support the load of the eight groups of blades 21 are arranged between the cones, and the right side is provided with a detachable pressing plate 19 for fixing the blades 21; the middle of the main body of the cone bit 17 is provided with a first screw hole, and the first screw hole is provided with a first screw 18 for fixing the detachable pressing plate 19; and the lower end of a main body of the PDC bit 26 is provided with a second plug pin type joint 27 which is convenient to replace, the upper end is provided with a second screw hole 23, a pressing plate 22 and a composite PDC sheet 24, the second screw hole 23 is provided with a second screw for fixing the pressing plate 22, and the pressing plate 22 fixes the composite PDC sheet 24.
The working process of the invention is as follows:
SI: Weight-on-Bit and Rotating Speed Experiment under Single Factor Condition
SI 1: First, open the jacket 8, place the rock core 13 and install the screws, start the variable speed motor 10, start a speed control system to control the rotating speed, finally start the walking beam lifting mechanism and the displacement sensor 25, and start a weight-on-bit control system to control the weight-on-bit. (During weight-on-bit experiment, fix the rotating speed and change the weight-on-bit; and during rotating speed experiment, fix the weight-on-bit and change the rotating speed.)
S12: Obtain real-time drilling depth, weight-on-bit and torque parameters of the rock 13 through the displacement sensor 25, the pressure sensor 3 and the torque sensor 2.
S13: Stop the variable speed motor 10, lower the walking beam lifting mechanism 5 and the displacement sensor 25, and close all instruments after the experiment.
For example, a cone bit is used to perform a weight-on-bit experiment on sandstone. An improved rock drillability test using a micro cone bit is performed on sandstone. Each test point has a fixed
2020100280 25 Feb 2020 rotating speed of 55 rpm, and 850 N, 800 N, 750 N, 700 N, 600 N and 510 N of weight-on-bit is applied for testing successively. The experimental results are shown in Fig. 4.
As can be seen from Fig. 4, the slope of the rock drillability curve obviously increases with the increase of the weight-on-bit, indicating that the change of the weight-on-bit will have a significant impact on the drilling speed, thus affecting rock drillability. In addition, the drillability curve of the micro cone bit under different weights-on-bit has obvious periodic fluctuation in Fig.
4. Therefore, a moving average method is needed to process original data to smooth the rock drillability curve. It can be considered that the weights of elements in each window of the periodic fluctuation are equal, i.e. the experimental original data are preprocessed according to the simple moving average method. For the processed experimental data, take the drilling time corresponding to the effective drilling depth of 2.4 mm (i.e. a drilling depth of 0.2 mm ~ 2.6 mm), and obtain the rock drillability grade and drilling speed under the corresponding weight-on-bit, as shown in Table
1.
Table 1 Rock Drillability Grade and Drilling Speed Test Results under Different Weights-on-Bit
| Weight-on-bit (N) | Drilling | Drilling speed (mm/s) | |
| time (s) | Grade | ||
| 850 | 12.800 | 3.678 | 0.19104 |
| 800 | 15.200 | 3.926 | 0.15485 |
| 750 | 19.667 | 4.298 | 0.12240 |
| 700 | 21.000 | 4.392 | 0.11574 |
| 600 | 25.133 | 4.651 | 0.09456 |
| 510 | 34.334 | 5.102 | 0.06956 |
| S2: Drillability Experiment |
S21: First, open the jacket 8, place the rock core 13 and install the screws, start the variable speed motor 10, start a speed control system, finally start the walking beam lifting mechanism 5 and the displacement sensor 25, and start a weight-on-bit control system. Drilling is carried out by means of a computer compiled program, and drilling time is measured. (Rotating speed 55 r/min; weight-on-bit: cone bit 890 N, PDC bit 500 N)
S22: Obtain real-time drilling depth, weight-on-bit and torque parameters of the rock 13 through the displacement sensor 25, the pressure sensor 3 and the torque sensor 2.
S23: Save the data and close the program after the experiment, stop the variable speed motor 10, lower the beam lifting mechanism and the displacement sensor 25, and close all instruments.
For example, a cone bit is used to perform a weight-on-bit experiment on sandstone. The diameter (or area) of a bottom hole crater formed in the drilling process of the micro cone bit into the rock core gradually increases until a maximum crater is formed when the drilling depth reaches 16 mm. This drilling process is called bottoming rock drillability experiment. Sandstone samples are used to carry out an improved bottoming rock drillability test using a micro cone bit. During the experiment, adopt a fixed weight-on-bit of 890 N, a rotating speed of 55 rpm, and a one-off drilling depth of 16 mm, and obtain the drill bit and rock sample crater after the experiment. The experimental results are shown in Fig. 5.
Similar to the improved rock drillability experiment using the micro cone bit under different weights-on-bit, the bottoming rock drillability curve of the micro cone bit also has periodic fluctuation, and original data can be processed by the simple moving average method. According to the calculation method of the simple moving average method, take n as 5, 10, 15, 20, 25 ... to process the original data of the drillability curve. When n=25 is finally determined, the distortion of the original data is reduced as much as possible while the processed curve is stable and smooth. The bottoming drillability curves before and after processing are shown in Fig. 5.
According to programming calculation, obtain the weight-on-bit per unit diameter and per unit area at any drilling depth corresponding to a weight-on-bit of 890 N, as shown in Fig. 6.
The weights-on-bit per unit diameter and per unit area at a drilling depth of 2.6 mm corresponding to a weight-on-bit of 850 N, 800 N, 750 N, 700 N, 600 N and 510 N are calculated respectively, and corresponding points are found in Fig. 6, thus obtaining corresponding drilling depth points. According to the drilling depth point, find out a corresponding drilling time point on the processed curve in Fig. 5, finally intercept an effective drilling depth of 2.4 mm upward by taking the drilling depth point as a start point, obtain a corresponding drilling time, and calculate the drilling speeds and drillability grades corresponding to the weights-on-bit per unit area and per unit diameter respectively, as shown in Table 2.
Table 2 Drilling Speed and Drillability Grade Calculated according to Pressure Per Unit Area and Per Unit Diameter
| Weight-on-bit (N) | Unit area Weight-on-bit (N/mm 2) | Drilling | Unit diameter Weight-on-bit (N/mm) | Drilling | ||
| speed (mm/s) | Drillability grade | speed (mm/s) | Drillability grade | |||
| 850 | 1.162 | 0.159 | 3.920 | 27.855 | 0.151 | 3.988 |
| 800 | 1.094 | 0.155 | 4.012 | 26.216 | 0.145 | 4.047 |
| 750 | 1.025 | 0.122 | 4.030 | 24.578 | 0.133 | 4.175 |
| 700 | 0.957 | 0.116 | 4.047 | 22.939 | 0.114 | 4.392 |
| 600 | 0.820 | 0.095 | 4.243 | - | - | - |
| 510 | 0.697 | 0.069 | 4.415 | - | - | - |
| Note: the drilling depth corresponding to unit area and unit diameter is 2.6 | mm; | |||||
| indicates | that the weight-on-bit per | unit diameter exceeds the | value range | of Fig. 6, so | ||
| corresponding parameters cannot be calculated. |
According to the data of Table 1 and Table 2, the drilling speed comparison graph (Fig. 7) and the drillability grade comparison graph (Fig. 8) between the measured results of drillability under different weights-on-bit and the calculated results based on the weight-on-bit per unit area and per unit diameter are obtained.
It can be seen from Fig. 7 that the measured drilling speed shows sound linear growth with the increase of the weight-on-bit, and there is also a good linear growth relationship between the drilling speed and the weight-on-bit calculated based on the weight-on-bit per unit area and per unit diameter. By comparing the three, it can be seen that the drilling speed calculated based on the weight-on-bit per unit diameter is closer to the measured value.
It can be seen from Fig. 8 that the measured drillability grade shows sound linear growth with the reduction of the weight-on-bit, and there is also a good linear growth relationship between the drillability grade and the weight-on-bit calculated based on the weight-on-bit per unit area and per unit diameter. By comparing the three, it can be seen that the drillability grade calculated based on the weight-on-bit per unit diameter is closer to the measured value.
In general, the drilling speed and the rock drillability calculated based on the weight-on-bit per unit diameter are in good agreement with the measured values, which are closer to the experimental values. It indicates that the specific weight-on-bit affects the rate of penetration by the weight-on-bit per unit diameter. Further, to study the comprehensive influence of multiple drilling parameters (weight-on-bit, rotating speed and fluid column pressure) on the drilling speed,
2020100280 25 Feb 2020 a drilling speed equation model needs to be established to quantify the comprehensive influence of each parameter on the drilling speed.
S3: Drilling Speed Experiment
S31: First, open the jacket 8, place the rock core 13 and install the screws, start the variable speed motor 10, start a speed control system, finally start the walking beam lifting mechanism and the displacement sensor 25, and start a weight-on-bit control system. A computer compiled program is used to automatically control the systems to realize the random drilling of the weight-on-bit and rotating speed.
S32: Obtain real-time drilling depth, weight-on-bit and torque parameters of the rock 13 through the displacement sensor 25, the pressure sensor 3 and the torque sensor 2.
S3 3: Save the data and close the program after the experiment, stop the variable speed motor 10, lower the beam lifting mechanism and the displacement sensor 25, and close all instruments.
The above are only specific embodiments of the invention, but the protection scope of the invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the invention, which should be covered by the protection scope of the invention. Therefore, the protection scope of the invention shall be subject to the protection scope of the said claims.
Claims (8)
- Claims1. A testing device for measuring rock drillability, characterized by comprising a frame (1), and a driving device, a rock breaking weight-on-bit device and a micro drill bit rock breaking weight-on-bit measuring mechanism which are arranged in the frame (1);wherein the rock breaking weight-on-bit device comprises a telescopic drill rod (4) and a micro drill bit (7), one end of the telescopic drill rod (4) is connected with an output end of the driving device, and the other end is connected with the micro drill bit (7); and the micro drill bit rock breaking weight-on-bit measuring mechanism comprises a pressure sensor (3) arranged on the telescopic drill rod (4), a torque sensor (2) and a walking beam lifting mechanism (5); the walking beam lifting mechanism (5) is provided with a displacement sensor (25), and the sensors are all connected with a dynamic control card in a computer mainframe, run by a control program and output data.
- 2. The testing device for measuring rock drillability according to claim 1, characterized in that the driving device is a variable speed motor (10), which is run by a control program and outputs data.
- 3. The testing device for measuring rock drillability according to claim 2, characterized in that a brake (11) is further arranged on an output shaft of the variable speed motor (10).
- 4. The testing device for measuring rock drillability according to claim 1, characterized in that both ends of the walking beam lifting mechanism (5) are connected with a rail in an upright post of the frame (1) through gears respectively.
- 5. The testing device for measuring rock drillability according to claim 1, characterized in that a jacket (8) is arranged inside the upper end of the frame (1), and a jacket fixing end (9) of the2020100280 25 Feb 2020 jacket (8) is fixed at the top of the frame.
- 6. The testing device for measuring rock drillability according to claim 1, characterized in that a material receiving plate (6) is arranged on the telescopic drill rod (4) and located below the micro drill bit (7).
- 7. The testing device for measuring rock drillability according to claim 1, characterized in that one side of the upright post of the frame (1) is provided with a displacement limiter (12) for limiting the walking beam lifting mechanism (5).
- 8. The testing device for measuring rock drillability according to claim 1, characterized in that the micro drill bit (7) may be a cone bit (17) or a PDC bit (26); the lower end of a main body of the cone bit (17) is provided with a first plug pin type joint (16) which is convenient to replace, the middle of a fixed pressing plate on the left side of the upper end is provided with a shaft, a plurality of groups of blades (21) are arranged in the shaft, a plurality of supporting gaskets (20) which support the load of the plurality of groups of blades (21) are arranged between the cones, and the right side is provided with a detachable pressing plate (19) for fixing the blades (21); the middle of the main body of the cone bit (17) is provided with a first screw hole, and the first screw hole is provided with a first screw (18) for fixing the detachable pressing plate (19); and the lower end of a main body of the PDC bit (26) is provided with a second plug pin type joint (27) which is convenient to replace, the upper end is provided with a second screw hole (23), a pressing plate (22) and a composite PDC sheet (24), the second screw hole (23) is provided with a second screw for fixing the pressing plate (22), and the pressing plate (22) fixes the composite PDC sheet (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020100280A AU2020100280A4 (en) | 2020-02-25 | 2020-02-25 | Testing Device for Measuring Rock Drillability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020100280A AU2020100280A4 (en) | 2020-02-25 | 2020-02-25 | Testing Device for Measuring Rock Drillability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020100280A4 true AU2020100280A4 (en) | 2020-04-02 |
Family
ID=69994591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020100280A Ceased AU2020100280A4 (en) | 2020-02-25 | 2020-02-25 | Testing Device for Measuring Rock Drillability |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2020100280A4 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697572A (en) * | 2020-12-18 | 2021-04-23 | 浙江华东工程咨询有限公司 | Indoor test method suitable for argillaceous siltstone crushing |
| CN113006779A (en) * | 2021-03-03 | 2021-06-22 | 中国石油大学(北京) | Evaluation method and correction method for drillability level value of conglomerate stratum rock |
| CN113137222A (en) * | 2021-05-20 | 2021-07-20 | 西安科技大学 | Test system and test method for rapid drilling of complex rock stratum |
| CN114136673A (en) * | 2021-11-15 | 2022-03-04 | 西南石油大学 | Full-size myriawatt-level laser auxiliary mechanical rock breaking test bed |
| CN114486479A (en) * | 2022-01-26 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Concrete strength detection device and method |
-
2020
- 2020-02-25 AU AU2020100280A patent/AU2020100280A4/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697572A (en) * | 2020-12-18 | 2021-04-23 | 浙江华东工程咨询有限公司 | Indoor test method suitable for argillaceous siltstone crushing |
| CN112697572B (en) * | 2020-12-18 | 2023-08-29 | 浙江华东工程咨询有限公司 | Indoor test method suitable for crushing argillaceous siltstone |
| CN113006779A (en) * | 2021-03-03 | 2021-06-22 | 中国石油大学(北京) | Evaluation method and correction method for drillability level value of conglomerate stratum rock |
| CN113137222A (en) * | 2021-05-20 | 2021-07-20 | 西安科技大学 | Test system and test method for rapid drilling of complex rock stratum |
| CN113137222B (en) * | 2021-05-20 | 2022-06-21 | 西安科技大学 | Test system and test method for rapid drilling of complex rock stratum |
| CN114136673A (en) * | 2021-11-15 | 2022-03-04 | 西南石油大学 | Full-size myriawatt-level laser auxiliary mechanical rock breaking test bed |
| CN114486479A (en) * | 2022-01-26 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Concrete strength detection device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020100280A4 (en) | Testing Device for Measuring Rock Drillability | |
| CN210264683U (en) | Test device for measuring rock drillability | |
| CN105938070B (en) | Multi-functional true triaxial rock drilling test macro and the test method for characterizing rock mass characteristic | |
| RU2582896C2 (en) | Testing stiffness based on acoustic emission with low noise coefficients | |
| Rajesh Kumar et al. | Prediction of uniaxial compressive strength, tensile strength and porosity of sedimentary rocks using sound level produced during rotary drilling | |
| RU2550314C2 (en) | Testing of rigidity based on acoustic emission for pdc, pcbn or other hard or superhard materials | |
| CN202544844U (en) | Tester for determining rock drillability and drilling parameter sensitivity | |
| CN107288162B (en) | Device and method for detecting pile bottom sediment thickness of bored concrete pile | |
| CN108801357A (en) | A kind of portable multi-function soil body injection integrated test facility and device based on fiber grating | |
| CN112257254B (en) | Stratum drillability evaluation method based on grey prediction | |
| CN103674739A (en) | Mud shale brittle nature experimental device and experimental analysis method thereof | |
| RU2422588C2 (en) | Procedure for soil impact probing and device for its implementation | |
| CN109991103B (en) | Shear strength testing device and shear strength and static cone penetration test method thereof | |
| CN205333304U (en) | Miniature probing laboratory bench of hole bottom power drilling tool | |
| CN116595809B (en) | Underground engineering surrounding rock drilling pressure relief-detection evaluation method | |
| CN106839960A (en) | It is a kind of for timber structure Tenon node size and the lossless detection method of internal flaw | |
| CN111139812B (en) | Static sounding device and method for geotechnical geological exploration | |
| CN103105290A (en) | Test method of rock breaking with full gauge drilling bit | |
| CN117350144A (en) | Rock mass strength characteristic prediction method based on machine learning | |
| CN113310829B (en) | Drillability testing device and experimental method for rock in impact mode | |
| CN115182321A (en) | Sensing controllable cavity sounding coring device and using method thereof | |
| CN209040098U (en) | A kind of test of circular cone dynamic sounding, standard penetration test (SPT) feeler lever guide device | |
| CN103091006A (en) | Test method used for rock breaking performance of drill gear ring | |
| CN209525202U (en) | For studying the experiment loading system of underground Rock Masses Fractures problem | |
| CN202391405U (en) | Scaling device of MWD (measurement while drilling) apparatus for drilling pressure and torque in petroleum drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |