Device and method for automatically measuring multi-scale in-situ information of deep stratum while drilling

Abstract

The invention discloses an automatic measurement-while-drilling device for multi-scale in-situ information of a deep stratum and further discloses an automatic measurement-while-drilling method for the multi-scale in-situ information of the deep stratum. A high-frequency sound wave assembly, an intermediate-frequency sound wave assembly and a low-frequency sound wave assembly are arranged at the same time, and through cooperative work of the high-frequency sound wave assembly, the intermediate-frequency sound wave assembly and the low-frequency sound wave assembly, the measurement accuracy is improved; by combining the cooperation of a ground sensor module and a drill rod measuring short section, the multi-scale in-situ information acquisition of a small-scale rock core internal structure of a deep stratum, the characteristics of a stratum around a medium-scale drill hole and a large-scale regional geologic structure is realized; according to the method, an RGB color coding mode is adopted, multiple parameters such as a structure field, a stress field and an intensity field are mapped into visual color information, visual expression of complex geological parameters is achieved, and key information such as the integrity and the stress state of a feature stratum can be conveniently and rapidly recognized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of geological engineering and deep resource exploration, and particularly relates to a deep formation multi-scale in-situ information while-drilling automatic measuring device and a deep formation multi-scale in-situ information while-drilling automatic measuring method. BACKGROUND

[0002] With the deepening of the development and utilization of deep underground resources in China, the scale of deep underground engineering construction is increasing, and the accurate acquisition of multi-scale in-situ information of deep formation is in urgent need. In the process of drilling in deep formation, it is important to comprehensively and accurately master the structure of rock mass in the scale of borehole wall, the scale of borehole surrounding and the scale of borehole and ground, and to obtain the internal structure information, peripheral morphology information and stress distribution information of core under in-situ state in borehole, so as to ensure the safety of engineering, improve the efficiency of construction and optimize the design of engineering. However, the existing measurement techniques have many limitations. On the one hand, the existing in-situ testing methods, such as borehole acoustic wave, borehole water pressure, borehole elastic modulus and cross-hole CT, mainly understand the physical and mechanical properties of rock-soil body through indirect methods, and have problems such as long test period, high cost and lagging measurement results, which makes it difficult to realize real-time in-situ testing of rock mass structure and mechanical parameters. Moreover, these methods can only obtain a single or a few parameters, which cannot meet the demand of comprehensive acquisition of multi-scale and multi-type information of deep formation. For example, when measuring the mechanical properties of rock mass around the borehole, the detection of rock mass structure characteristics cannot be considered at the same time, which leads to insufficient comprehensive understanding of the formation. On the other hand, the existing while-drilling measurement devices and methods have defects in functional integration and measurement accuracy. Some measurement devices can only test one physical property parameter at a time, which greatly increases the field work time and improves the risk of damage to the test probe. Moreover, some test probes need to be connected with cables in real time, and the probes enter the borehole by their own weight, which greatly limits the measurement depth and cannot meet the measurement requirements of deep formation. In addition, the existing technology lacks effective means for synchronous acquisition of internal structure information, peripheral morphology information and stress distribution information of core in borehole, and it is difficult to realize comprehensive automatic acquisition of key in-situ information of deep formation. SUMMARY

[0003] The present application aims to solve the above problems in the prior art, and provides a deep formation multi-scale in-situ information while-drilling automatic measuring device and a deep formation multi-scale in-situ information while-drilling automatic measuring method, which are especially suitable for scenes such as deep mineral resource (such as oil and gas, metal mine, coal, etc.) exploration, geological disaster (such as fault activity, rock burst, etc.) early warning, underground engineering (such as tunnel, shaft) stability evaluation and deep geological structure research, and aims to realize real-time acquisition, analysis and visual presentation of multi-scale in-situ information of deep formation from microscale to macroscale.

[0004] The above object of the present application is achieved by the following technical means:

[0005] A deep formation multi-scale in-situ information while drilling automatic measurement method, comprising the following steps:

[0006] Step 1, judge the perception threshold interval of the characteristic area, when it is determined to be in the characteristic area, go to step 2;

[0007] Step 2, when in the characteristic area, shrink the inner drill bit to the fidelity zone, start to extract the core, monitor the torque data of the torque sensor of the inner drill bit, when increased to the set threshold value, the in-situ processing of the core is completed, go to step 3;

[0008] Step 3, measure the start feedback, start the low-frequency acoustic assembly to emit a low-frequency test signal, after the ground sensor module and the ground control system perceive the low-frequency test signal, the drilling machine stops working, go to step 4;

[0009] Step 4, sequentially start the medium-frequency acoustic assembly, the high-frequency acoustic assembly, the thrust module, and the low-frequency acoustic assembly, respectively, to collect small-scale in-situ information, medium-scale borehole in-situ information, core compressive strength, and large-scale in-situ information;

[0010] Step 5, after the multi-scale in-situ information collection of the formation at the current drilling depth is completed, return to step 1 until the measurement of all drilling depths is completed, go to step 6;

[0011] Step 6, respectively perform structural parameter inversion and stress field parameter inversion on the large-scale in-situ information, the medium-scale in-situ information, and the small-scale in-situ information, obtain the corresponding structure field and stress field, construct the strength field corresponding to the large-scale in-situ information and the small-scale in-situ information according to the torque data, construct the strength field corresponding to the medium-scale in-situ information according to the core compressive strength data, respectively take the structure field, the stress field, and the strength field corresponding to the large-scale in-situ information, the medium-scale in-situ information, and the small-scale in-situ information as the three-dimensional directions of a cube, and respectively color code the three-dimensional directions of the cube with the three primary colors of RGB, to obtain the stereoscopic in-situ information description of the large-scale in-situ information, the medium-scale in-situ information, and the small-scale in-situ information based on RGB color coding;

[0012] Step 7, repeat step 6 to obtain the stereoscopic in-situ information description of each scale at different core depths.

[0013] As described above, the stereoscopic in-situ information description based on RGB color coding is constructed in the following way:

[0014] Firstly, take the structure field, the stress field, and the strength field as the three-dimensional directions of a cube;

[0015] Secondly, the maximum value DJMAX and the minimum value DJMIN of the structure field are obtained, the maximum value DYMAX and the minimum value DYMIN of the stress field are obtained, and the maximum value DQMAX and the minimum value DQMIN of the intensity field are obtained;

[0016] Finally, the maximum values of DJMAX, DYMAX and DQMAX correspond to the maximum values of three primary colors, the minimum values of DJMIN, DYMIN and DQMIN correspond to the maximum values of three primary colors, and the remaining intermediate values are mapped in proportion to obtain the three-dimensional in-situ information description based on the RGB color coding.

[0017] The perception threshold interval of the feature area in step 1 is set by the following method:

[0018] Firstly, the torsion data of the current stratum is sampled by the torsion sensor, and the sampled torsion data sequence is analyzed in real time by the control acquisition module. Specifically, M torsion data is taken as a group of sub-data, the sampled torsion data sequence is grouped to obtain sub-data M1~Mp, and the mean deviation N1~Np of each group of sub-data is calculated in turn;

[0019] Secondly, the stratum with a mean deviation Ni+1 less than Ni by k times is selected, the strata where the sub-data Mi+1 and Mi are located are taken as reference strata, the support vector machine method is used to train the sub-data Mi and Mi+1 to obtain a prediction interval, the subsequent sub-data is input into the trained support vector machine, if the prediction value corresponding to the subsequent sub-data exceeds the prediction interval, the perception threshold interval of the feature area is met, and the corresponding stratum is in the feature area; if the prediction value corresponding to the subsequent sub-data does not exceed the prediction interval, the perception threshold interval of the feature area is not met, and the corresponding stratum is not in the feature area, wherein i is a serial number, and i takes 1~p;

[0020] If no reference stratum is found for the current k value, the k value is changed, and the search is continued from M1 until the reference stratum is found.

[0021] The step 2 as described above further includes the following steps:

[0022] While the inner drill bit is retracted to the fidelity zone, the geometric feature collection of the drilling hole at the position of the high-frequency acoustic wave assembly is realized, the stress field parameter inversion of the stratum at the position of the high-frequency acoustic wave assembly is realized by using the stress field inversion method based on the geometric feature of the drilling hole, the control acquisition module calculates the stress size of the current core depth, the control acquisition module drives the inner and outer obturators to work and expand to the maximum to realize the obturation of the inside and outside of the measurement zone, and then the water pressure pump generates water pressure consistent with the stress of the stratum at the position of the high-frequency acoustic wave assembly, so that the core formed by processing is kept consistent with the stress state before processing.

[0023] Step 4 specifically comprises the following steps as described above:

[0024] Step 4.1, scanning the medium-frequency acoustic signal around the borehole, collecting full waveform acoustic signals reflected from the medium-frequency acoustic signal around the borehole, and obtaining mesoscale in-situ information;

[0025] Step 4.2, scanning the high-frequency acoustic signal on the surface and inside of the core in the borehole, collecting full waveform acoustic signals reflected and transmitted from the high-frequency acoustic signal on the surface and inside of the core in the borehole, and obtaining small-scale in-situ information;

[0026] Step 4.3, continuously extruding the upper surface of the core by the thrust module, recording the thrust value collected by the thrust module in real time, if the thrust value of the thrust module suddenly decreases greatly after a period of time, converting the instantaneous value of the sudden large decrease of the thrust value of the thrust module into the compressive strength value of the core;

[0027] Step 4.4, when the thrust value suddenly decreases greatly, the thrust module stops extending, then the low-frequency acoustic assembly is started to emit low-frequency acoustic signals, when the ground sensor module and the ground control system perceive the low-frequency acoustic signals, an alarm information is sent, at the same time, the ground sensor module collects the low-frequency acoustic signals to obtain large-scale in-situ information, after the ground control system sends the alarm information, the drilling rig starts the drilling process, and enters step 5.

[0028] A deep formation multi-scale in-situ information while-drilling automatic measuring device, which implements the deep formation multi-scale in-situ information while-drilling automatic measuring method as described above, comprises a drill rod measuring sub, the drill rod measuring sub comprises a drilling area, a measuring area, a fidelity area and a control area from bottom to top, the drilling area comprises an outer drill bit in the form of a circular ring located at the outer periphery and an inner drill bit located at the inner side, the inner drill bit is in the form of a cylinder or a concave cylinder, a torque sensor is arranged in the inner drill bit, and a drill bit slurry hole is further arranged in the inner drill bit.

[0029] The measuring area is located above the drilling area, a core containing cavity is arranged in the center of the measuring area, a high-frequency acoustic module, a medium-frequency acoustic module and a low-frequency acoustic module are arranged in the interlayer between the side wall of the measuring area and the side wall of the core containing cavity, the high-frequency acoustic module comprises a plurality of self-emitting and self-receiving high-frequency acoustic assemblies arranged uniformly in the circumferential direction, the medium-frequency acoustic module comprises a plurality of self-emitting and self-receiving medium-frequency acoustic assemblies arranged uniformly in the circumferential direction, and the low-frequency acoustic module comprises a plurality of low-frequency acoustic assemblies arranged uniformly in the circumferential direction, the outer side wall of the core containing cavity and the inner side wall of the measuring area are both provided with high-frequency acoustic assemblies, and the medium-frequency acoustic assemblies and the low-frequency acoustic assemblies are both fixedly arranged on the inner side wall of the measuring area.

[0030] The fidelity area is located above the measuring area, and an inner drill bit storage cavity is arranged in the fidelity area.

[0031] The control area is located above the fidelity area, and the control area comprises a drill rod slurry passage, a thrust module, a pressurized water pump, an inner sealing device, an outer sealing device, and a connecting assembly, the bottom of the drill rod slurry passage is communicated with the measurement area, and the top of the drill rod slurry passage is communicated with a mud medium injection device arranged on the ground; the thrust module is connected with the inner drill bit, and the thrust module drives the inner drill bit to move up and down; the output pipe of the pressurized water pump is communicated with the drill rod slurry passage, and the pressurized water pump provides pressurized water to the measurement area to simulate the confining pressure before the core is formed; the inner sealing device is arranged inside the control area and seals the drill rod slurry passage by expansion; the outer sealing device is fixedly arranged on the outer wall of the drill rod measurement short section, and the outer sealing device seals the gap between the drill rod measurement short section and the borehole wall by expansion; the connecting assembly is arranged at the top of the drill rod measurement short section, and the drill rod measurement short section is connected with the bottom of the drill rod through the connecting assembly at the top.

[0032] The control area further comprises a control and acquisition module and a power module, the control and acquisition module is connected with the thrust module, the pressurized water pump, the inner sealing device, and the outer sealing device of the control area, the control and acquisition module is further connected with the high-frequency acoustic wave assembly, the medium-frequency acoustic wave assembly, and the low-frequency acoustic wave assembly of the measurement area, the control and acquisition module is further connected with the outer drill bit, the inner drill bit, and the torque sensor of the drilling area, the control and acquisition module controls and drives the thrust module, the pressurized water pump, the inner sealing device, the outer sealing device, the high-frequency acoustic wave assembly, the medium-frequency acoustic wave assembly, the low-frequency acoustic wave assembly, the outer drill bit, and the inner drill bit, and the control and acquisition module further receives the acquisition data of the high-frequency acoustic wave assembly, the acquisition data of the medium-frequency acoustic wave assembly, and the acquisition data of the torque sensor.

[0033] The ground sensor module comprises a plurality of arrayed low-frequency acoustic wave collectors, and the ground control system is connected with the ground sensor module and the control and acquisition module through a signal transmission line.

[0034] The present application has the following beneficial effects relative to the prior art:

[0035] (1) Multi-scale information fusion perception is realized: the prior art is mostly limited to single-scale stratum information measurement, and it is difficult to establish a correlation from small-scale observation to large-scale. Through the cooperative work of the high-frequency, medium-frequency, and low-frequency acoustic wave assemblies, combined with the cooperation of the ground sensor module and the drill rod measurement short section, the present application realizes multi-scale in-situ information acquisition of small-scale core internal structure, medium-scale stratum features around the borehole, and large-scale regional geological structure, and builds a complete information chain of "core-borehole-region", thereby providing comprehensive data support for geological analysis.

[0036] (2) While drilling automation measurement, improve efficiency and continuity: traditional measurement needs to interrupt the drilling process for offline detection, which has the problems of low efficiency and discontinuous data. The application synchronously integrates drilling and measurement through the cycle process of automatic sensing of feature area, in-situ processing and measurement of core, and completes the information collection of feature formation without stopping, greatly improving the working efficiency of deep drilling and ensuring the continuity of full borehole data.

[0037] (3) In-situ measurement ensures data authenticity: in the prior art, the physical properties of the core after being taken out are easily changed due to environmental changes, affecting the measurement accuracy, and the stress of the taken-out core is released, so there is a large difference between the indoor test and the in-situ state data. The application completes data collection of the core in the original formation environment and stress state through the fidelity area and in-situ measurement mode, avoids the distortion of the properties of the core after being taken out of the in-situ state, and ensures the authenticity of the structural field, stress field and other parameters.

[0038] (4) Multi-parameter visualization presentation, improve data interpretation efficiency: traditional geological data is mostly presented in the form of numerical values or curves, which is difficult to interpret. The application innovatively uses RGB color coding method to map multiple parameters such as structural field, stress field and strength field into intuitive color information, realizing the visualization expression of complex geological parameters, and facilitating the rapid identification of key information such as the integrity of feature formation and stress state. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structural schematic view of the device of the application;

[0040] Figure 2 is a structural schematic view of the drill rod measuring sub of the device of the application;

[0041] Figure 3 is a state schematic view of the feature area sensing of the application;

[0042] Figure 4 is a state schematic view of the push module contraction driving the inner drill bit to shrink to the fidelity area of the application;

[0043] Figure 5 is a state schematic view of the in-situ processing of the core of the application;

[0044] Figure 6 is a state schematic view of the measurement start feedback of the application;

[0045] Figure 7 is a schematic view of in-situ signal collection of the medium frequency signal of the application;

[0046] Figure 8 is a schematic view of in-situ signal collection of the high frequency signal of the application;

[0047] Figure 9 A state schematic diagram of core compressive strength test of the present application;

[0048] Figure 10 A state schematic diagram of drill pipe measuring sub drilling of the present application;

[0049] Figure 11 A formation in-situ information description schematic diagram of the present application;

[0050] Brief description of drawings and corresponding component names:

[0051] 1-drill pipe measuring sub; 2-ground sensor module; 3-ground control system; 11-drilling area; 12-measuring area; 13-fidelity area; 14-control area; 111-inner drill bit; 112-outer drill bit; 113-torque sensor; 114-drill bit through slurry hole; 121-high frequency acoustic wave assembly; 122-medium frequency acoustic wave assembly; 123-low frequency acoustic wave assembly; 141-drill pipe through slurry hole; 142-thrust module; 143-control acquisition module; 144-power supply assembly; 145-pressurized water pump; 146-inner obturator; 147-outer obturator; 148-connection assembly. DETAILED DESCRIPTION

[0052] In order to facilitate those skilled in the art to understand and implement the present application, the present application will be further described in detail below in conjunction with examples, which are only used to illustrate and explain the present application, and are not a limitation on the present application.

[0053] Example 1:

[0054] A deep formation multi-scale in-situ information while-drilling automatic measuring device, comprising a drill pipe measuring sub 1, the drill pipe measuring sub 1 sequentially comprises a drilling area 11, a measuring area 12, a fidelity area 13, and a control area 14 from bottom to top;

[0055] The drilling area 11 is located at the bottom of the drill pipe measuring short section 1, and is used for drilling and core processing. The drilling area 11 includes an outer drill bit 112 located at the outer periphery and an inner drill bit 111 located at the inner side. The outer drill bit 112 is annular, and the inner drill bit 111 is cylindrical or concave cylindrical. When the inner drill bit 111 is extended, the outer drill bit 112 drills a hole together with the inner drill bit 111. When the inner drill bit 111 is retracted to the fidelity area 13, the outer drill bit 112 and the inner drill bit 111 perform in-situ core processing and sampling. The core is stored in the measuring area 12. A torque sensor 113 is arranged inside the inner drill bit 111. The torque sensor 113 measures the torque of the inner drill bit 111, thereby judging whether the current drill pipe measuring short section 1 is located in a characteristic area, and whether the core processing is completed. A drill bit slurry passage hole 114 is further arranged inside the inner drill bit 111. The drill bit slurry passage hole 114 is used for the circulation of mud during the drilling of the drill pipe measuring short section 1, thereby ensuring the cooling and lubrication of the drilling area 11 during drilling.

[0056] The measuring area 12 is located above the drilling area 11. A core receiving cavity is arranged at the center of the measuring area 12. High-frequency acoustic wave modules, medium-frequency acoustic wave modules, and low-frequency acoustic wave modules are arranged in the interlayer between the side wall of the measuring area 12 and the side wall of the core receiving cavity. The high-frequency acoustic wave modules include a plurality of self-sending and self-receiving high-frequency acoustic wave assemblies 121 arranged uniformly in the circumferential direction. The high-frequency acoustic wave assemblies 121 are arranged on the outer side wall of the core receiving cavity and the inner side wall of the measuring area 12, thereby realizing three-dimensional acoustic imaging of small-scale structures inside the core, three-dimensional geometric contour measurement of the outer contour of the core, and distribution measurement of the wave velocity of the core. In the working mode of the rotation of the drill pipe measuring short section 1, the geometric feature of the drilling hole can also be collected. The medium-frequency acoustic wave modules include a plurality of self-sending and self-receiving medium-frequency acoustic wave assemblies 122 arranged uniformly in the circumferential direction. The medium-frequency acoustic wave assemblies 122 are fixedly arranged on the inner side wall of the measuring area 12. The medium-frequency acoustic wave assemblies 122 can realize three-dimensional acoustic imaging of the medium-scale structure around the drilling hole wall outside the measuring area 12 through directional circumferential scanning measurement. The low-frequency acoustic wave modules include a plurality of low-frequency acoustic wave assemblies 123 arranged uniformly in the circumferential direction. The low-frequency acoustic wave assemblies 123 are fixedly arranged on the inner side wall of the measuring area 12. The low-frequency acoustic wave assemblies 123 are used for realizing three-dimensional acoustic imaging of large-scale structures of the stratum between the measuring area 12 and the ground.

[0057] The high-frequency range of the embodiment is 500 KHz-10 MHz, the medium-frequency range is 10 KHz-500 KHz, and the low-frequency range is 10 Hz-10 KHz. The small scale refers to the structure size between 10% and 90% of the diameter size of the core. The medium scale refers to the structure size between 10% and 90% of the scale around the hole wall that can be scanned by the medium frequency. The large scale refers to the structure size between 10% and 90% of the scale of the stratum between the measuring area 12 and the ground sensor module 2.

[0058] Since the frequency levels of the high-frequency acoustic wave assembly 121, the medium-frequency acoustic wave assembly 122 and the low-frequency acoustic wave assembly 123 are quite different, the measurement area 12 can easily distinguish the acoustic wave signals generated by the high-frequency acoustic wave assembly 121, the medium-frequency acoustic wave assembly 122 and the low-frequency acoustic wave assembly 123 through frequency filtering processing.

[0059] The fidelity area 13 is located above the measurement area 12, and the fidelity area 13 is provided with an inner drill bit 111 storage cavity. When it is necessary to process and sample the rock core in situ, the inner drill bit 111 is retracted into the inner drill bit 111 storage cavity of the fidelity area 13. When the torque data collected by the torque sensor 113 on the inner drill bit 111 suddenly increases to a set threshold value, it indicates that the top of the rock core contacts the inner drill bit 111, and the processing and sampling of the rock core in situ are completed.

[0060] The control area 14 is located above the fidelity area 13, and the control area 14 includes a drill rod slurry passage 141, a thrust module 142, a pressurized water pump 145, an inner sealing device 146, an outer sealing device 147, and a connecting assembly 148. The bottom of the drill rod slurry passage 141 is in communication with the measurement area 12, and the top of the drill rod slurry passage 141 is in communication with a mud medium injection device arranged on the ground. The thrust module 142 is connected with the inner drill bit 111. The thrust module 142 adopts a telescopic assembly, and the thrust module 142 drives the inner drill bit 111 to extend and retract through the telescopic belt. When drilling is needed, the thrust module 142 drives the inner drill bit 111 to extend, and the inner drill bit 111 and the outer drill bit 112 jointly realize drilling. When in-situ processing and sampling of the core are needed, the thrust module 142 drives the inner drill bit 111 to retract into the fidelity area 13, realizes in-situ processing of the core, and judges whether the processing is completed through the torque sensor 113. The thrust module 142 is arranged at the bottom of the control area 14. A water injection port is arranged between the bottom of the control area 14 and the top of the measurement area 12. The output pipe of the pressurized water pump 145 is in communication with the water injection port. The pressurized water pump 145 provides pressurized water to the measurement area 12, simulates the confining pressure before the core is formed, and ensures that the confining pressure of the core in the measurement area 12 is consistent with the confining pressure before the hole is formed. The inner sealing device 146 is arranged inside the control area 14, blocks the drill rod slurry passage 141 by expansion, and realizes water pressure maintenance in the measurement area 12. Before the inner sealing device 146 is started, the inner sealing device 146 is in a retracted state, and the drill rod slurry passage 141 can pass water and mud. After the inner sealing device 146 is started, the inner sealing device 146 is in an expanded state, and the drill rod slurry passage 141 cannot pass water and mud. The outer sealing device 147 is fixedly arranged on the outer wall of the drill rod measurement sub 1. The outer sealing device 147 blocks the gap between the drill rod measurement sub 1 and the hole wall by expansion. Before the outer sealing device 147 is started, the outer sealing device 147 is in a retracted state, and there is a gap between the control area 14 and the hole wall. After the outer sealing device 147 is started, the outer sealing device 147 is in an expanded state, and there is no gap between the control area 14 and the hole wall. The connecting assembly 148 is arranged at the top of the drill rod measurement sub 1. The drill rod measurement sub 1 is connected with the bottom of the drill rod through the connecting assembly 148 at the top. The connecting assembly 148 includes multiple connection forms and sizes, and ensures that the drill rod measurement sub 1 can be carried on different drill rods.

[0061] The control area 14 also includes a control acquisition module 143 and a power module 144. The control acquisition module 143 is connected to the thrust module 142, the pressurized water pump 145, the inner plug 146, and the outer plug 147 of the control area 14. The control acquisition module 143 is also connected to the high-frequency sound wave component 121, the medium-frequency sound wave component 122, and the low-frequency sound wave component 123 of the measurement area 12. The control acquisition module 143 is also connected to the outer drill bit 112, the inner drill bit 111, and the torque sensor 113 of the drilling area 11. Block 143 controls and drives the thrust module 142, the pressurized water pump 145, the inner sealer 146, the outer sealer 147, the high-frequency acoustic wave component 121, the intermediate-frequency acoustic wave component 122, the low-frequency acoustic wave component 123, the outer drill bit 112, and the inner drill bit 111. The control acquisition module 143 also receives the collected data of the high-frequency acoustic wave component 121, the collected data of the intermediate-frequency acoustic wave component 122, and the collected data of the torque sensor 113; the power supply module 144 realizes the voltage transformation, power supply and voltage stabilization of each electronic component in the drill pipe measuring short section 1.

[0062] It also includes a ground sensor module 2 and a ground control system 3. The ground sensor module 2 includes multiple low-frequency acoustic wave collectors arranged in an array (such as a rectangular or ring shape) to realize the collection of large-scale structural information of the formation between the drill pipe measurement short section 1 and the ground sensor module 2. The ground control system 3 is connected to the ground sensor module 2 and the control acquisition module 143 through a signal transmission line.

[0063] Example 2:

[0064] A method for automatic measurement of multi-scale in-situ information of deep formations while drilling, comprising the following steps:

[0065] Step 1: Determine the perception threshold interval of the characteristic area. During the drilling process, monitor the torque data of the torque sensor 113 on the inner drill bit 111 to determine whether the formation at the current drilling depth is in the characteristic area. If it is determined to be in the characteristic area, proceed to step 2. Step 1 specifically includes the following process:

[0066] The perception threshold interval of the characteristic area is set in the following manner: first, the torque data of the current formation is sampled by the torque sensor 113 and the sampled torque data sequence is transmitted to the control acquisition module 143. The control acquisition module 143 performs real-time analysis on the sampled torque data sequence. The capacity of the search box is set to M, that is, M torque data are grouped as a group of sub-data, and the sampled torque data sequence is grouped to obtain sub-data M1 to Mp. The mean deviation N1 to Np of each group of sub-data is calculated in sequence.

[0067] Secondly, select the stratum with mean deviation Ni+1 less than k times of Ni, take the strata of sub-data Mi+1 and Mi as reference strata, use support vector machine method to train sub-data Mi and Mi+1 to obtain a prediction interval, input the subsequent sub-data into the trained support vector machine, if the prediction value corresponding to the subsequent sub-data exceeds the prediction interval, the perception threshold interval of the characteristic region is met, and the corresponding stratum is in the characteristic region; if the prediction value corresponding to the subsequent sub-data does not exceed the prediction interval, the perception threshold interval of the characteristic region is not met, and the corresponding stratum is not in the characteristic region, wherein i is a serial number, i takes 1-p;

[0068] If no reference stratum is found for the current k value, change the k value and continue to find the reference stratum from M1 until the reference stratum is found.

[0069] Step 2, when in the characteristic region, the inner drill bit 111 is retracted to the fidelity zone 13, the core is extracted into the core containing cavity of the measuring zone 12, and when the torque data of the torque sensor 113 of the inner drill bit 111 increases to a set threshold value, the in-situ machining of the core is completed, and step 3 is entered; step 2 specifically includes the following processes:

[0070] The control acquisition module 143 sends a retraction instruction to the thrust module 142, and the thrust module 142 retracts the inner drill bit 111 to the fidelity zone 13. During the retraction process of the thrust module 142, the drill rod measuring sub 1 still performs deep spiral rotation under the driving of the drilling. Since the relative position movement occurs between the inner drill bit 111 and the outer drill bit 112, the amount of rock drilled by the inner drill bit 111 will be significantly less than the amount of rock drilled by the outer drill bit 112. The columnar core in the drill rod measuring sub 1 will gradually form. When the torque data collected by the torque sensor 113 suddenly increases to a set threshold value, it indicates that the top of the core contacts the inner drill bit 111, that is, the in-situ machining of the core is completed,

[0071] Step 2 further comprises the following process: while the control acquisition module 143 sends the contraction instruction to the thrust module 142, the control acquisition module 143 sends the working instruction to the high-frequency acoustic wave assembly 121, the high-frequency acoustic wave assembly 121 realizes the acquisition of the geometric feature of the drilling hole at the position of the high-frequency acoustic wave assembly 121 through high-frequency sound, and the stress field parameter inversion of the deep stratum at the position of the high-frequency acoustic wave assembly 121 is realized by using the stress field inversion method based on the geometric feature of the drilling hole, the control acquisition module 143 calculates the stress size at the depth, and the control acquisition module 143 drives the inner and outer obturators 146 and 147 to work and expand to the maximum to realize the obturation inside and outside the measurement area 12, then the control acquisition module 143 sends the working instruction to the pressurized water pump 145, the pressurized water pump 145 generates the pressure consistent with the stress of the deep stratum at the position of the high-frequency acoustic wave assembly 121, and ensures that the rock core formed by processing is consistent with the stress state before processing, thereby providing the measurement state consistent with the stress state of the deep stratum for subsequent in-situ measurement.

[0072] Step 3, measurement start feedback; the control acquisition module 143 sends the measurement start feedback instruction, the low-frequency acoustic wave assembly 123 starts to work, the low-frequency acoustic wave assembly 123 sends the modulated low-frequency acoustic wave signal, the low-frequency acoustic wave assembly 123 sends the acoustic wave without directionality, when the ground sensor module 2 and the ground control system 3 which are always in working state sense the signal sent by the low-frequency acoustic wave assembly 123, the ground control system 3 sends the alarm information, the drilling machine stops working, and the interference signal caused by the working of the drill pipe measurement sub 1 due to drilling is reduced, and step 4 is entered.

[0073] Step 4, the medium-frequency acoustic wave assembly 122, the high-frequency acoustic wave assembly 121, the thrust module 142 and the low-frequency acoustic wave assembly 123 are opened in sequence to respectively collect the small-scale in-situ information of the internal structure of the rock core, the medium-scale in-situ information of the surrounding stratum feature, the compression strength of the rock core, and the large-scale in-situ information of the regional geological structure, and realize the multi-scale in-situ information collection, which specifically comprises the following process:

[0074] Step 4.1, the control acquisition module 143 sends the in-situ information collection, first, the medium-frequency acoustic wave assembly 122 starts to work, the medium-frequency acoustic wave assembly 122 realizes the scanning of the medium-frequency acoustic wave signal around the drilling hole by using the self-generation and self-reception mode, the control acquisition module 143 collects the full waveform acoustic wave signal reflected by the medium-frequency acoustic wave assembly 122 around the drilling hole, and after the data acquisition of the medium-frequency acoustic wave assembly 122 is completed, the medium-scale in-situ information is obtained.

[0075] Step 4.2, the control acquisition module 143 drives the high-frequency acoustic wave assembly 121 located inside the cylinder of the measurement area 12 to start working, and the high-frequency acoustic wave assembly 121 realizes the scanning of the high-frequency acoustic wave signals on the surface and inside of the core in the borehole by using the self-sending and self-receiving and single-sending and single-receiving combination mode, the control acquisition module 143 acquires the full waveform acoustic wave signals reflected and transmitted by the core in the borehole to the high-frequency acoustic wave assembly 121, and the control acquisition module 143 completes the data acquisition of the high-frequency acoustic wave assembly 121 to obtain the small-scale in-situ information;

[0076] Step 4.3, the control acquisition module 143 drives the push module 142 to issue an extension instruction, and the push module 142 continuously presses the upper surface of the core, the control acquisition module 143 records the push force value collected by the push module 142 in real time, and if the push module 142 suddenly and greatly reduces after a period of time, it means that the core is crushed, and the sudden and great reduction of the push force value of the push module 142 can be converted into the compressive strength value of the core.

[0077] Step 4.4, at the same time, the control acquisition module 143 issues an instruction to stop the extension of the push module 142, then the control acquisition module 143 drives the low-frequency acoustic wave assembly 123 to start working, the low-frequency acoustic wave assembly 123 emits the low-frequency acoustic wave signals after modulation processing, the acoustic wave emitted by the low-frequency acoustic wave assembly 123 has no directionality, when the ground sensor module 2 and the ground control system 3 which are always in working state perceive the signal emitted by the low-frequency acoustic wave assembly 123, the ground control system 3 issues an alarm information, and at the same time, the ground control system 3 records the signal collected by the ground sensor module 2 from the low-frequency acoustic wave assembly 123 to obtain the large-scale in-situ information, after the ground control system 3 issues the alarm information, the drilling rig starts the drilling process, and enters step 5.

[0078] Step 5, after the multi-scale in-situ information acquisition of the stratum at the current drilling depth is completed, return to step 1 until the measurement of all drilling depths is completed, and enter step 6.

[0079] The step 5 specifically comprises the following steps: the control collection module 143 sends a stop working instruction to the inner sealing device 146, the outer sealing device 147 and the pressurized water pump 145, the inner sealing device 146 and the outer sealing device 147 shrink to the original state, the pressurized water pump 145 unloads the water pressure, the control collection module 143 drives the thrust module 142 to send an extension instruction, the thrust module 142 drives the inner drill bit 111 to gradually extend away from the thrust module 142, in the process of extension of the thrust module 142, the drill rod measuring sub 1 still performs deep spiral rotation under the driving of drilling, due to the fact that the high layer difference between the inner drill bit 111 and the outer drill bit 112 is smaller and smaller, under the double action of the thrust of the thrust module 142 and the drill rod, the rock amount drilled by the inner drill bit 111 will be obviously larger than the rock amount drilled by the outer drill bit 112, the columnar rock core height in the drill rod measuring sub 1 will gradually shorten, when the length of the extension of the thrust module 142 ensures that the high layer between the inner drill bit 111 and the outer drill bit 112 is in the installation state of the characteristic region perception, the thrust module 142 stops working, and enters the step 1,

[0080] Thus, the drilling and the automatic multi-scale in-situ information collection and measurement of the characteristic stratum of the whole borehole can be realized according to the depth, and the whole process is ended.

[0081] Step 6, the large-scale in-situ information of the current rock core depth is respectively subjected to structural parameter inversion and stress field parameter inversion, respectively obtaining a first structural field and a first stress field of the current rock core depth, a first strength field of the current rock core depth is constructed according to the torque data, the first structural field, the first stress field and the first strength field of the current rock core depth are taken as three-dimensional directions of a cubic, and the three-dimensional directions of the cubic are respectively color-coded by RGB three primary colors, to obtain large-scale RGB color-coded three-dimensional in-situ information description;

[0082] Among them, the large-scale in-situ information of the current rock core depth is subjected to structural parameter inversion to obtain a first structural field of the current rock core depth, specifically: on the basis of the full pulse acoustic wave signal emitted by the low-frequency acoustic wave assembly 123 collected by the ground sensor module 2, combined with seismic full waveform inversion (FWI), structural parameter inversion of the stratum between the drill rod measuring sub 1 and the ground sensor module 2 is realized, a first structural field of the current rock core depth is constructed, a maximum value (the structural field parameter with the best integrity) DJMAX1 of the first structural field is obtained, and a minimum value (the structural field parameter with the worst integrity) DJMIN1 of the first structural field of the current rock core depth is obtained;

[0083] The stress field parameters of the large-scale in-situ information at the current core depth are inversed to obtain a first stress field at the current core depth, specifically: the stress field parameter inversion of the formation between the drill rod measuring sub 1 and the ground sensor module 2 is realized in combination with the ground stress inversion method based on the wave velocity distribution, the first stress field at the current core depth is constructed, and the maximum value DYMAX1 and the minimum value DYMIN1 of the first stress field at the current core depth are obtained;

[0084] The first strength field at the current core depth is constructed according to the torsion data, specifically: the torsion data of the formation between the drill rod measuring sub 1 and the ground sensor module 2 collected by the torsion sensor 113 is taken as the strength field parameter, the first strength field at the current core depth is constructed, and the maximum value DQMAX1 and the minimum value DQMIN1 of the first strength field at the current core depth are obtained;

[0085] The three-dimensional directions of the cube are color-coded with the three primary colors of RGB respectively to obtain a large-scale RGB color-coded three-dimensional in-situ information description at the current core depth, specifically: based on the principle that any color can be mixed with red (R), green (G) and blue (B) three colors in appropriate proportions, the colors of the large-scale in-situ information are encoded with RGB matching values, DJMAX1, DYMAX1 and DQMAX1 correspond to the maximum values of the three primary colors respectively, DJMIN1, DYMIN1 and DQMIN1 correspond to the maximum values of the three primary colors respectively, and the remaining intermediate values are mapped in proportion to obtain the large-scale RGB color-coded three-dimensional in-situ information description at the current core depth.

[0086] The structure parameter inversion and the stress field parameter inversion are respectively performed on the mesoscale in-situ information at the current core depth to obtain a second structure field and a second stress field at the current core depth, the second structure field, the second stress field and the second strength field at the current core depth are taken as the three-dimensional directions of the cube, and the three-dimensional directions of the cube are color-coded with the three primary colors of RGB respectively to obtain a mesoscale RGB color-coded three-dimensional in-situ information description.

[0087] The structure parameter inversion is performed on the mesoscale in-situ information at the current core depth to obtain a second structure field at the current core depth, specifically: on the basis of collecting the full waveform acoustic wave signals reflected from the medium frequency acoustic wave assembly 122 around the borehole by the control collection module 143, the structure parameter inversion of the formation at the depth of the drill rod measuring sub 1 is realized in combination with the borehole surrounding rock structure inversion method based on directional acoustic wave scanning, the second structure field at the current core depth is constructed, the maximum value (the structure field parameter with the best integrity) DJMAX2 of the second structure field is obtained, and the minimum value (the structure field parameter with the worst integrity) DJMIN2 of the second structure field at the current core depth is obtained;

[0088] The stress field parameters of the current core depth are inversely calculated based on the mesoscale in-situ information to obtain a second stress field. Specifically, the full waveform acoustic signals reflected by the high-frequency acoustic assembly 121 from the core surface in the borehole are collected by the control acquisition module 143, the geometric profile of the core is calculated, the stress field parameters of the stratum at the depth of the drill rod measuring sub 1 are inversely calculated based on the borehole shape, the second stress field of the current core depth is constructed, the maximum value DYMAX2 and the minimum value DYMIN2 of the second stress field are obtained;

[0089] The second strength field of the current core depth is constructed based on the core compressive strength data. Specifically, the core compressive strength data at different depths is taken as the strength field parameters to construct the second strength field of the current core depth, and the maximum value DQMAX2 and the minimum value DQMIN2 of the second strength field of the current core depth are obtained.

[0090] The three-dimensional directions of the cube are color-coded with the three primary colors of RGB to obtain the mesoscale RGB color-coded three-dimensional in-situ information description of the current core depth. Specifically, DJMAX2, DYMAX2 and DQMAX2 correspond to the maximum values of the three primary colors, DJMIN2, DYMIN2 and DQMIN2 correspond to the minimum values of the three primary colors, and the remaining intermediate values are mapped in proportion to obtain the mapping values of the core compressive strength data of the current core depth. The mapping values of the core compressive strength data of the current core depth are color-coded as the strength field of the current core depth to obtain the mesoscale RGB color-coded three-dimensional in-situ information description of the current core depth.

[0091] The structure parameters and the stress field parameters of the small-scale in-situ information of the current core depth are inversely calculated to obtain a third structure field and a third stress field of the current core depth, respectively. The third strength field of the current core depth is constructed based on the torsion data. The third structure field, the third stress field and the third strength field of the current core depth are taken as the three-dimensional directions of the cube, and the three-dimensional directions of the cube are color-coded with the three primary colors of RGB to obtain the small-scale RGB color-coded three-dimensional in-situ information description of the current core depth.

[0092] The small-scale in-situ information of the current core depth is inversely calculated to obtain a third structure field of the current core depth, specifically: based on the acquisition of the full waveform acoustic signals reflected by the high-frequency acoustic assembly 121 from the core inside the borehole by the control acquisition module 143, the structure parameter inversion of the core at the depth of the drill rod measuring sub 1 is realized in combination with the core internal structure inversion method based on full waveform inversion, the third structure field of the current core depth is constructed, the maximum value (the structure field parameter with the best integrity) DJMAX3 of the third structure field is obtained, and the minimum value (the structure field parameter with the worst integrity) DJMIN3 of the third structure field is obtained.

[0093] The small-scale in-situ information of the current core depth is inversely calculated to obtain a third structure field of the current core depth, specifically: based on the acquisition of the full waveform acoustic signals reflected by the high-frequency acoustic assembly 121 from the core inside the borehole by the control acquisition module 143, the structure parameter inversion of the core at the depth of the drill rod measuring sub 1 is realized in combination with the core internal structure inversion method based on full waveform inversion, the third structure field of the current core depth is constructed, the maximum value (the structure field parameter with the best integrity) DJMAX3 of the third structure field is obtained, and the minimum value (the structure field parameter with the worst integrity) DJMIN3 of the third structure field is obtained.

[0094] The third strength field of the current core depth is constructed according to the torque data, specifically: the torque sensor 113 collects the formation torque data of the drill rod measuring sub 1 during the core in-situ drilling process of the depth formation as the strength field parameter, the third strength field of the current core depth is constructed, the maximum value DQMAX3 and the minimum value DQMIN3 of the third strength field are obtained.

[0095] The three-dimensional directions of the cube are color-coded with the three primary colors of RGB, respectively, to obtain the small-scale RGB color-coded three-dimensional in-situ information description of the current core depth, specifically: DJMAX3, DYMAX3, and DQMAX3 correspond to the maximum values of the three primary colors, respectively, DJMIN3, DYMIN3, and DQMIN3 correspond to the maximum values of the three primary colors, respectively, and the remaining intermediate values are mapped in proportion to obtain the small-scale RGB color-coded three-dimensional in-situ information description of the current core depth.

[0096] Step 7, repeat step 6 to obtain the three-dimensional in-situ information description of different scales of different core depths, realize the in-situ information description of the large, medium and small scales of the whole area of the formation, and intuitively present the large, medium and small scale information of the typical formation.

[0097] It should be noted that the embodiments described in the present application are only examples to illustrate the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A method for automatic measurement of multi-scale in-situ information of deep formations while drilling, characterized in that: The following steps are involved: Step 1: Determine the perception threshold interval of the feature area. If it is determined to be in the feature area, proceed to step 2. Step 2: When in the characteristic area, the inner drill bit (111) is retracted to the fidelity zone (13), and the torque data of the core through the torque sensor (113) monitoring the inner drill bit (111) is extracted. When the torque data increases to a set threshold, the core in-situ processing is completed and step 3 is entered; Step 3: measuring the start feedback, starting the low-frequency acoustic wave component (123) to send out a low-frequency test signal, and after the ground sensor module (2) and the ground control system (3) sense the low-frequency test signal, the drilling rig stops working and proceeds to step 4; Step 4: sequentially start the medium-frequency acoustic wave component (122), the high-frequency acoustic wave component (121), the thrust module (142), and the low-frequency acoustic wave component (123) to respectively perform small-scale in-situ information collection, medium-scale drilling in-situ information collection, core compressive strength, and large-scale in-situ information collection; Step 5: After the multi-scale in-situ information of the stratum at the current borehole depth is collected, return to step 1 until all borehole depths are measured, and then proceed to step 6; Step 6: Perform structural parameter inversion and stress field parameter inversion on the large-scale in-situ information, the mesoscale in-situ information, and the small-scale in-situ information, respectively, to obtain corresponding structural fields and stress fields; construct strength fields corresponding to the large-scale in-situ information and the small-scale in-situ information based on the torsion data; construct strength fields corresponding to the mesoscale in-situ information based on the core compressive strength data; use the structural fields, stress fields, and intensity fields corresponding to the large-scale in-situ information, the mesoscale in-situ information, and the small-scale in-situ information as three-dimensional directions of a cube, and color-code the three-dimensional directions of the cube using the three primary colors of RGB to obtain three-dimensional in-situ information descriptions based on RGB color coding corresponding to the large-scale in-situ information, the mesoscale in-situ information, and the small-scale in-situ information; Step 7: Repeat step 6 to obtain three-dimensional in-situ information descriptions of various scales at different core depths.

2. The method for automatic measurement of multi-scale in-situ information of deep formations while drilling according to claim 1, characterized in that: The RGB color coding-based stereo in-situ information description is constructed in the following manner: First, the structural field, stress field, and strength field are taken as the three-dimensional directions of the cube; Secondly, obtain the maximum value DJMAX and minimum value DJMIN of the structure field, obtain the maximum value DYMAX and minimum value DYMIN of the stress field, and obtain the maximum value DQMAX and minimum value DQMIN of the intensity field; Finally, DJMAX, DYMAX, and DQMAX correspond to the maximum values ​​of the three primary colors respectively, and DJMIN, DYMIN, and DQMIN correspond to the maximum values ​​of the three primary colors respectively. The remaining intermediate values ​​are mapped according to the proportion to obtain a three-dimensional in-situ information description based on RGB color coding.

3. The method for automatic measurement of multi-scale in-situ information of deep formations while drilling according to claim 2, characterized in that: The perception threshold interval of the feature area in step 1 is set in the following way: First, the torque data of the current formation is sampled by the torque sensor (113), and the acquisition module (143) is controlled to perform real-time analysis on the sampled torque data sequence, specifically: M torque data are grouped as a group of sub-data, the sampled torque data sequence is grouped to obtain sub-data M1~Mp, and the mean deviation N1~Np of each group of sub-data is calculated in sequence; Secondly, select the stratum whose mean deviation Ni+1 is less than k times of Ni, and use the sub-data Mi+1 and the stratum where Mi is located as the reference stratum. Use the support vector machine method to train the sub-data Mi and Mi+1 to obtain the prediction interval, and input the subsequent sub-data into the trained support vector machine. If the prediction value corresponding to the subsequent sub-data exceeds the prediction interval, it meets the perception threshold interval of the characteristic area, and the corresponding stratum is in the characteristic area; if the prediction value corresponding to the subsequent sub-data does not exceed the prediction interval, it does not meet the perception threshold interval of the characteristic area, and the corresponding stratum is not in the characteristic area, where i is the sequence number, i ranges from 1 to p; If the reference layer is not found for the current k value, change the k value and continue searching from M1 until the reference layer is found.

4. The method for automatic measurement of multi-scale in-situ information of deep formations while drilling according to claim 3, characterized in that: The step 2 further comprises the following steps: While the inner drill bit (111) is retracted to the fidelity zone (13), the geometric features of the borehole at the location of the high-frequency acoustic wave component (121) are collected, and the stress field parameter inversion of the depth stratum at the location of the high-frequency acoustic wave component (121) is achieved by using the ground stress field inversion method based on the geometric features of the borehole. The acquisition module (143) is controlled to calculate the stress magnitude at the current core depth. The acquisition module (143) is controlled to drive the inner plugger (146) and the outer plugger (147) to work and expand to the maximum, thereby achieving the internal and external plugging of the measurement area (12). Subsequently, the pressurized water pump (145) generates a water pressure consistent with the stress of the depth stratum at the location of the high-frequency acoustic wave component (121), so that the processed core is in the same stress state as before the processing.

5. The method for automatic measurement of multi-scale in-situ information of deep formations while drilling according to claim 4, characterized in that: The step 4 specifically includes the following steps: Step 4.1, scanning the area around the borehole with a medium-frequency acoustic signal, collecting full-waveform acoustic signals reflected from the area around the borehole to obtain mesoscale in-situ information; Step 4.2: Scan the surface and interior of the core in the borehole with high-frequency acoustic signals, collect full-waveform acoustic signals reflected and transmitted by the surface and interior of the core in the borehole, and obtain small-scale in-situ information; Step 4.3, continuously compressing the upper surface of the rock core by the thrust module (142), and recording the thrust value collected by the thrust module (142) in real time. If the thrust value of the thrust module (142) suddenly decreases significantly after a period of time, the instantaneous value of the thrust value of the thrust module (142) suddenly decreases significantly is converted into the compressive strength value of the rock core; Step 4.4: When the thrust value suddenly drops significantly, the thrust module (142) stops extending, and then the low-frequency acoustic wave component (123) is started to emit a low-frequency acoustic wave signal. When the ground sensor module (2) and the ground control system (3) sense the low-frequency acoustic wave signal, an alarm message is issued. At the same time, the low-frequency acoustic wave signal is collected through the ground sensor module (2) to obtain large-scale in-situ information. After the ground control system (3) issues the alarm message, the drilling rig starts the drilling process and enters step 5.

6. A device for automatically measuring multi-scale in-situ information of deep formations while drilling, implementing a method for automatically measuring multi-scale in-situ information of deep formations while drilling as claimed in claim 5, comprising a drill pipe measuring sub (1), characterized in that: The drill pipe measuring sub (1) includes a drilling area (11), a measuring area (12), a fidelity area (13), and a control area (14) from the bottom to the top. The drilling area (11) includes an outer drill bit (112) in an annular shape located on the periphery and an inner drill bit (111) located on the inner side. The inner drill bit (111) is cylindrical or concave cylindrical. The torque sensor (113) is arranged inside the inner drill bit (111). A drill bit slurry hole (114) is also provided inside the inner drill bit (111). The measuring area (12) is located above the drilling area (11), and a core accommodating cavity is provided at the center of the measuring area (12). A high-frequency acoustic wave module, a medium-frequency acoustic wave module, and a low-frequency acoustic wave module are provided in the interlayer between the side wall of the measuring area (12) and the side wall of the core accommodating cavity. The high-frequency acoustic wave module includes a plurality of self-generating and self-collecting high-frequency acoustic wave components (121) uniformly distributed along the circumference, the medium-frequency acoustic wave module includes a plurality of self-generating and self-collecting medium-frequency acoustic wave components (122) uniformly distributed along the circumference, and the low-frequency acoustic wave module includes a plurality of low-frequency acoustic wave components (123) uniformly distributed along the circumference. The high-frequency acoustic wave components (121) are provided on the outer wall of the core accommodating cavity and the inner wall of the measuring area (12), and the medium-frequency acoustic wave components (122) and the low-frequency acoustic wave components (123) are fixedly provided on the inner wall of the measuring area (12); The fidelity zone (13) is located above the measuring zone (12), and an inner drill bit (111) storage cavity is provided in the fidelity zone (13).

7. The deep formation multi-scale in-situ information automatic measurement while drilling device according to claim 6, characterized in that: The control area (14) is located above the fidelity area (13). The control area (14) includes a drill rod slurry hole (141), a thrust module (142), a pressurized water pump (145), an internal plug (146), an external plug (147), and a connecting assembly (148). The bottom of the drill rod slurry hole (141) is connected to the measurement area (12), and the top of the drill rod slurry hole (141) is connected to a mud medium injection device arranged on the ground; the thrust module (142) is connected to the inner drill bit (111), and the thrust module (142) drives the inner drill bit (111) to move up and down; the output pipe of the pressurized water pump (145) is connected to the inner drill bit (111). The pressure pump (145) is connected to the drill pipe slurry hole (141), and provides pressurized water to the measuring area (12) to simulate the confining pressure before the core is formed; the internal plug (146) is arranged inside the control area (14), and blocks the drill pipe slurry hole (141) by expansion; the external plug (147) is fixedly arranged on the outer wall of the drill pipe measuring short section (1), and the external plug (147) blocks the gap between the drill pipe measuring short section (1) and the borehole wall by expansion; the connecting assembly (148) is arranged on the top of the drill pipe measuring short section (1), and the drill pipe measuring short section (1) is connected to the bottom of the drill pipe through the connecting assembly (148) at the top.

8. The deep formation multi-scale in-situ information automatic measurement while drilling device according to claim 7, characterized in that: The control area (14) further includes a control acquisition module (143) and a power supply module (144). The control acquisition module (143) is connected to the thrust module (142), the pressurized water pump (145), the inner plug (146), and the outer plug (147) of the control area (14). The control acquisition module (143) is also connected to the high-frequency sound wave component (121), the medium-frequency sound wave component (122), and the low-frequency sound wave component (123) of the measurement area (12). The control acquisition module (143) is also connected to the outer drill bit (112), the inner drill bit (11 1), and the torque sensor (113), the control acquisition module (143) controls and drives the thrust module (142), the pressurized water pump (145), the inner occluder (146), the outer occluder (147), the high-frequency sound wave component (121), the medium-frequency sound wave component (122), the low-frequency sound wave component (123), the outer drill bit (112), and the inner drill bit (111), and the control acquisition module (143) also receives the collected data of the high-frequency sound wave component (121), the collected data of the medium-frequency sound wave component (122), and the collected data of the torque sensor (113).

9. The deep formation multi-scale in-situ information automatic measurement while drilling device according to claim 8, characterized in that: It also includes a ground sensor module (2) and a ground control system (3), wherein the ground sensor module (2) includes a plurality of low-frequency sound wave collectors arranged in an array, and the ground control system (3) is connected to the ground sensor module (2) and the control acquisition module (143) via a signal transmission line.

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