317 results about "Measurement while drilling" patented technology

The invention relates to the technical field of unconventional oil-gas exploration, and discloses a well-seismic integrated horizontal well geosteering risk evaluation method, which comprises the following steps: S1, acquiring three-dimensional seismic data, measurement while drilling data and geological logging data through a well-seismic integrated data acquisition platform; s2, constructing a horizontal well geosteering dynamic model based on multi-source heterogeneous data, and integrating a seismic inversion result and real-time drilling parameters; by establishing a well-seismic data dynamic fusion mechanism and a multi-source risk quantification model, the problem of space-time dislocation of seismic inversion and measurement-while-drilling data is solved, the recognition precision of a fault boundary, a lithologic interface and a pressure abnormal zone is ensured to be matched with drilling position changes in real time, risk misjudgment caused by model updating lag in a traditional method is eliminated, and the accuracy of the method is improved. The accuracy and timeliness of geosteering decision making of the complex structure area are improved; by monitoring well track deviation and geological model prediction deviation in real time, the risks of well wall instability and target deviation are avoided, and the operation safety of the horizontal well in the full life cycle is guaranteed.

The invention relates to the field of measurement while drilling in drilling operation, in particular to a small-diameter resistivity while drilling measuring device which comprises a drill bit installed at the bottom of a drill rod, a main shaft rotationally arranged in the drill rod, hinged plates symmetrically arranged at the upper end of the drill rod, and an annular cavity formed in the drill rod. Annular frames with U-shaped sections are symmetrically arranged in the annular cavity in a sliding manner, a receiving end and a transmitting end are respectively mounted in the annular frames which correspond to each other up and down, and mounting units for limiting the transmitting end and the receiving end are arranged in the annular frames. The high-efficiency detection of measured objects with different depths and angles in a complex geological environment is realized, the vibration generated in the drilling process of the drill bit is effectively absorbed, the transmitting end and the receiving end are ensured to work in a stable environment, the measurement error caused by the vibration is avoided, and the detection precision and reliability are greatly improved.

The invention is applicable to the technical field of coal mine tunneling, and provides a coal mine tunneling working method based on a digital twinning system, which comprises the following steps: S1, constructing a three-dimensional dynamic geological twinning model integrating geological radar, measurement while drilling and optical fiber sensing; s2, in the three-dimensional dynamic geological twinborn model, rock stratum characteristic changes are predicted through a digital twinborn body, and a self-adaptive cutting control instruction is generated; s3, simulating gas diffusion and roof stress distribution in real time while the control instruction is sent out, and triggering a grading early warning mechanism; s4, optimizing cutting parameters and emergency plans in a virtual environment according to early warning conditions, reversely controlling physical equipment, setting geological-equipment two-way closed-loop control, breaking through a traditional one-way data acquisition mode, realizing real-time two-way interaction between a geological model and tunneling equipment, establishing a digital twinning driven tunneling process parameter optimization standard library, and realizing real-time two-way interaction between the geological model and the tunneling equipment. Data support is provided for iteration of the technology, and improvement of coal mine tunneling work is facilitated.

The invention relates to the technical field of oil well drilling, and discloses an MWD (measurement while drilling) device which comprises a main body, a pressure sensor is fixedly connected to the inner wall of the left side of the main body, a plurality of circular through holes are formed in the outer surface of the main body, the plurality of circular through holes form a group, the pressure sensor serves as a center circumference array, and the two groups of circular through holes are distributed at equal intervals; a plurality of rectangular through holes are formed in the outer surface of the main body. When the scraping ring slides back and forth, the situation that when slurry enters the main body through a circular through hole and a rectangular through hole, blockage occurs due to large particles in the slurry, then flowing of the slurry entering the main body is affected, and consequently signals of the pressure sensor cannot be normally generated or transmitted can be reduced; and therefore, the mud pulse signal can be smoothly transmitted to the ground, and the precision and the feasibility of measured data are improved.

Methods and related systems for drilling a subterranean wellbore includes rotating a bottomhole assembly (BHA) to drill the wellbore. The BHA includes a cutting tool and at least one sensor. The at least one sensor is configured to make measurements while drilling. These measurements are processed to compute a magnetic field profile, which is further processed to identify and characterize a signature or pattern in the magnetic field profile that is representative of a target well proximate to the wellbore being drilled. At least one of a distance or a direction to the target well can be computed based on characteristics of the signature or pattern in the magnetic field profile. The computed distance or direction to the target well can be used to control the direction of drilling of the wellbore.

The invention relates to the technical field of coal mine gas disaster prediction, in particular to a while-drilling sensing coal face gas danger area division method which comprises the following steps: S1, in a detection drill hole drilling process of a coal face, detecting the gas danger area of the coal face; the method comprises the following steps: synchronously acquiring three types of parameters: direct gas parameters, drilling kinetic parameters and hole wall geophysical parameters through a measurement-while-drilling system; the measurement while drilling system comprises a sensor array arranged on a drilling tool and a data transmission module communicating with a ground data processing system. S2, performing space-time alignment and fusion analysis on the multi-source parameters acquired in the step S1, and adopting a mode recognition method based on mutation point detection and multi-parameter association; through multi-source information fusion and dynamic coupling modeling, accurate identification and graded early warning of a gas dangerous area are realized, the detection precision and early warning timeliness are improved, and a closed-loop prevention and control system integrating perception, evaluation and management and control is formed.

The invention discloses an intelligent hydraulic steering drilling system and method. The system comprises a high-precision measuring system, an intelligent control system, a hydraulic vehicle and an omnibearing hydraulic steering mechanism, the high-precision measurement system is used for acquiring measurement while drilling data and transmitting the measurement while drilling data to the intelligent control system; the intelligent control system is used for receiving and analyzing the measurement while drilling data, and if the data exceed a working threshold value, a first control signal is sent to the hydraulic vehicle; the posture of the drill bit is monitored in real time, and if the posture of the drill bit deviates, a second control signal is sent to the omni-directional hydraulic steering mechanism; the hydraulic vehicle receives the first control signal and transmits high-pressure liquid to the underground; and the all-directional hydraulic steering mechanism receives the second control signal, opens a corresponding nozzle and sprays high-pressure liquid, adjusts the posture of the drill bit and controls the drill bit to complete steering. The whole drilling process can be intelligently controlled, control signals are processed and transmitted in time, the drilling track of a drill bit is intelligently controlled, and well resources are effectively utilized and activated.

The invention discloses a well track control method, and relates to the technical field of oil and gas resource development. Comprising the following steps: selecting a characteristic value from measurement-while-drilling LWD data; predicting and identifying the characteristic values through a BP neural network to obtain upper boundary line data and lower boundary line data, and drawing a stratum profile map; constructing a drilling environment according to the stratigraphic profile map; determining an action award function according to the distance between the current position of the drill bit and the next target spot and the deviation angle; performing interactive training by adopting a deep Q network algorithm DQN to obtain a trained neural network model; in the process that the drill bit reaches the well bottom from the drilling point, the total value of the action reward function obtained by the trained neural network model is made to be maximum by continuously selecting control actions, the optimal drilling path of the drill bit is obtained, and the optimal drilling path of the drill bit serves as the optimal well track. Dynamic interaction of the drill bit and the drilling environment can be achieved, and the well track is controlled in real time to extend along the target reservoir to drill all target spots.

The invention relates to the technical field of rock mass mechanical monitoring, and particularly discloses a stope roof fracture intelligent early warning system based on hard rock damage evolution, which comprises a rock-soil physical property detection module for obtaining rock-soil physical property parameters of rock-soil below a stope roof based on measurement while drilling in the drilling process, and sending the rock-soil physical property parameters to the early warning module; the parameters comprise stress response, wave velocity change, fracture evolution and porosity of rock and soil; the drilling data acquisition module is used for acquiring drilling process data including bit pressure, torque and drilling speed in the drilling process, and the drilling data acquisition module comprises a sensor array connected with drilling equipment; and the data processing module is used for obtaining an analysis result associated with the damage state of the stope roof by combining a hard rock damage evolution algorithm according to the rock-soil physical property parameters and the drilling process data, and determining the fracture risk of the stope roof according to the analysis result. The early warning of the fracture risk of the stope roof is realized by integrating rock-soil physical properties and drilling data in real time and applying a hard rock damage evolution algorithm.

The invention relates to an intelligent prediction system and method for gas overrun of a mine stope face, and the system comprises a data collection module, a gas concentration analysis module, a ground stress analysis module, and a gas overrun early warning module. The data acquisition module is used for collecting gas extraction drill hole single-hole accurate metering data and ground stress measurement while drilling data in the working face recovery process; the gas concentration analysis module and the crustal stress analysis module are used for performing corresponding fitting analysis on the acquired single-hole accurate measurement data of the gas extraction drill hole and the crustal stress while-drilling monitoring data to obtain gas and crustal stress early warning indexes; and the gas over-limit early warning module carries out cooperative early warning on gas over-limit accidents in the recovery process according to the fitting result. According to the invention, real-time early warning of gas overrun of the mining roadway is realized, and the production safety of a mine is effectively ensured.

The invention discloses an underground coal mine self-charging through cable type gyroscope measurement-while-drilling system and method. The system comprises a gyroscope measurement-while-drilling device, a single-bend screw motor, a through cable drill rod, a through cable water feeder, a directional drilling machine and an anti-explosion computer. The gyroscope measurement-while-drilling device comprises an instrument outer tube, an instrument protection shell, an adapter, a generator assembly shell, a gyroscope assembly, a control panel, a battery pack, an electric control circuit board and a generator assembly, wherein the gyroscope assembly, the control panel, the battery pack and the electric control circuit board are arranged in the instrument protection shell and sequentially connected, and the generator assembly is arranged in the generator assembly shell. A turbine rotor and a turbine stator are arranged on the outer wall of the generator assembly shell. The influence of a ferromagnetic material in a screw drill and a drill rod is avoided, the distance between a measurement-while-drilling probe and a drill bit is shortened, the timeliness of drilling track measurement is remarkably improved, unnecessary measurement errors are avoided, the drilling efficiency is improved, power output is stable and continuous, a plurality of sets of vibration reduction and righting assemblies are arranged, and the production cost is reduced. The device can be applied to strong vibration working conditions of hard stratum construction.

The invention discloses a multi-parameter dynamic calibration method and system for measurement while drilling under a mining mine, and relates to the technical field of parameter dynamic calibration, and the method comprises the steps: dynamically selecting at least one main monitoring parameter from a measurement while drilling parameter set based on an underground multi-parameter data flow obtained in real time; continuously collecting a time sequence measurement value of the main monitoring parameter, and calculating a comprehensive confidence influence value of each tail end parameter node; generating a to-be-calibrated parameter sequence sorted according to the calibration priority, and matching the calibration operation type of each parameter; according to the to-be-calibrated parameter sequence and the calibration operation type, calibrating to-be-calibrated parameters; and when an environment sudden change is monitored, triggering a re-decision process of the main monitoring parameter. The method has the advantages that the main monitoring parameters are dynamically selected for environment error sensing, resource waste and misjudgment risks caused by all-parameter scanning are eliminated, and the timeliness and reliability of calibration of the key working conditions of drilling are ensured by mainly breaking through error source rapid positioning under environment sudden change.

The invention discloses an underground coal mine large-diameter directional drilling system and a hole forming method. The system comprises a directional drill bit, a single-bend screw motor, a non-magnetic drilling tool, a packing cross short section, a double-wall drilling rod and a double-channel water injection and slag discharge device which are connected in sequence, and a mud pulse measurement-while-drilling instrument is arranged in the non-magnetic drilling tool; the packing crossed short section comprises a short section body and a limiting connector which are connected, and the outer wall of the short section body is sleeved with a sliding sleeve. A double-wall drill rod local reverse circulation mode is adopted for deslagging, compared with a conventional direct circulation mode, the circulating water amount needed for deslagging is greatly reduced, the water supply and pollution discharge requirements of a directional drilling site are greatly reduced, the rated discharge capacity and power of a matched slurry pump are greatly reduced, circulating water flows in an annular channel and a center channel of the double-wall drill rod, and the water supply efficiency is greatly improved. The overflow section is not influenced by the hole wall stratum, the reverse circulation flow deslagging efficiency is high, the cleaning effect in the hole is good, and the technical problems that the amount of circulating flushing liquid needed by a conventional large-diameter directional hole drilling system is large, and the hole wall stability maintaining capacity is poor are solved.

The utility model provides a near-bit measurement-while-drilling nipple based on an eccentric water hole. The near-bit measurement-while-drilling nipple structurally comprises an outer pipe, an electronic bin framework, a wireless transmitting nipple, a battery assembly, a gamma measurement module, an inclination angle measurement module and a measurement circuit board. The electronic bin framework is fixed in the outer pipe, the battery assembly, the gamma module and the inclination angle module are annularly arranged, near-bit track and geological parameter measurement is achieved, and occupied space is reduced. One end of the wireless transmitting short section is connected with the outer pipe through straight threads, and the other end is connected to the screw motor through taper threads. The wireless transmitting short section transmits measurement data through wireless signals, and transmission of the measurement data across the screw motor is achieved. The intrinsic safety type circuit design ensures that the explosion-proof requirement of a coal mine is met. The device is compact in structure, meets the requirement of small-diameter drilling of a coal mine, and realizes high-precision and real-time measurement and stable data transmission.

A while-drilling acoustic auto-tracking wellbore tool and a method for using same. The tool comprises: a power generation and communication system (100), which comprises a power generation system and a communication system, wherein the communication system is used for bidirectional transfer of measurement data and a control instruction; a power and measurement and control system (200), which comprises a measurement while drilling system, wherein the measurement while drilling system is used for measuring inclination and azimuth data of a newly drilled borehole, and transmitting the data to the communication system; and an acoustic measurement and guidance system (300), which comprises an acoustic emission and measurement and control system, wherein the acoustic emission and measurement and control system is used for emitting an acoustic signal in the newly drilled borehole, receiving a return signal and transmitting the return signal to the communication system. The solution solves the difficult problems of communicating a newly drilled well and an old borehole, determining the distance between a drill bit and the old borehole in real time, etc. The acoustic emission and measurement and control system emits the acoustic signal in the newly drilled borehole, receives the return signal and transmits the return signal to the communication system, and the position of a wellbore is dynamically scanned and monitored in an acoustic while-drilling manner, thereby achieving the aim of performing measurement while drilling.

A magnetic ranging system for use with a drilling assembly in a borehole in a formation, the drilling assembly including a drill string, a drill bit and a bottomhole assembly (BHA) connected to the drill bit, the BHA including a measurement-while-drilling (MWD) system, a bi-directional MWD telemetry interface, and a steerable component, may comprise at least one ranging magnetometer incorporated into the BHA. The ranging magnetometer may be configured to collect ranging measurements from behind the drill bit and the ranging magnetometer may be configured to transmit measurement data. The magnetic ranging system may include at least two ranging magnetometers, with one ranging magnetometer positioned above the MWD system and one ranging magnetometer positioned below the MWD system.

The invention discloses a wireless measurement-while-drilling directional drilling protection pore-forming drilling tool which comprises a directional drill bit, a hollow screw motor short section, a hollow non-magnetic short section, a drill rod and a water feeder which are sequentially communicated from front to back, and the water feeder is connected with a pressure sensor; a first overflowing channel is arranged in the directional drill bit; a second overflowing channel is arranged in the hollow screw motor short section; the hollow non-magnetic short section comprises a non-magnetic short section outer pipe and a recoverable wireless measurement-while-drilling instrument assembly arranged in the non-magnetic short section outer pipe in a sleeved mode. According to the drilling tool, the recoverable wireless measurement-while-drilling instrument assembly is arranged in the non-magnetic short section outer pipe, wireless measurement-while-drilling in the drilling process can be achieved, and the measurement instrument assembly can be recovered without lifting the drill after measurement is completed; after the recoverable wireless measurement-while-drilling instrument assembly is lifted out, a physical channel can be provided for lowering of the screen pipe while drilling, and therefore wireless measurement-while-drilling directional drilling and protection integrated construction is achieved.

The invention discloses a coal rock quality near-bit while-drilling evaluation device adaptive to a mining directional drilling machine, which comprises a PDC (Polycrystalline Diamond Compact) bit, a near-bit while-drilling measurement nipple, a screw drill, a while-drilling sound wave detector, a track measurement exploring tube and a central through cable drill rod which are connected in sequence, the near-bit measurement-while-drilling nipple comprises a cylinder, a first internal thread connecting part, a first external thread connecting part and a detection module arranged on the cylinder, and the detection module comprises a rotating speed sensor, a positive pressure strain gauge and a rotating torque strain gauge; the method comprises the following steps: 1, mounting the coal rock quality near-bit while-drilling evaluation device; 2, drilling and data acquisition of a to-be-detected coal seam; and 3, obtaining coal rock quality evaluation indexes of the coal seam to be detected. The method is reasonable in design, the near-bit while-drilling data are processed to obtain the corrected rock mass basic quality index, and the coal rock mass quality grade near-bit while-drilling quantitative judgment is performed according to the corrected rock mass basic quality index.

The invention provides a regulation and control method and system for hole wall instability of a horizontal drill hole in a high ground stress environment, and belongs to the technical field of horizontal drilling. The method comprises the steps that a high ground stress hole wall instability model based on elastic-plastic damage mechanics is established, and a high ground stress correction coefficient, a dynamic damage variable and a multi-field coupling equation are introduced into the model; model parameters are corrected in real time based on measurement while drilling data, and the hole wall stability is dynamically predicted; according to the prediction result, the model prediction error can be greatly reduced through the method, the progressive damage process of the rock mass in the high ground stress environment can be accurately described, and the technical problem of inaccurate prediction of a traditional static model is solved. By correcting model parameters in real time and dynamically adjusting a wall protection strategy, the hole wall instability accident rate is reduced, and the drilling operation safety is remarkably improved.

The invention relates to the technical field of soft coal operation equipment, in particular to a measurement-while-drilling exploring tube with a flow and pressure measuring function, which comprises a tube body, a turbine flowmeter and a fluid pressure synchronizing component, the tube body can rotate around the axis of the tube body, the tube body is connected with a drilling tube, the drilling tube is connected with a rotating shaft of a directional drill, and the drilling tube is driven by the rotating shaft of the directional drill to rotate. And then the drilling pipe drives the pipe body to rotate, and fluid is conveyed into the pipe body from one end of the pipe body. According to the turbine flowmeter, the fluid pressure synchronization assembly is arranged, when fluid in the pipe body passes through the position where the fluid pressure synchronization assembly is located, the fluid pressure synchronization assembly enables the fluid in the pipe body and the pipe body to rotate at the same speed, and therefore an impeller in a measurement area of the turbine flowmeter is only pushed by the acting force of the fluid in the axial direction of the pipe body to rotate; therefore, the turbine flowmeter can accurately measure the flow velocity of the fluid in the pipe body, so that a worker can accurately and conveniently control the pump-out flow velocity of the pump according to the flow velocity of the fluid measured by the turbine flowmeter.

The invention provides an underground drilling working condition identification method and device based on data driving. The method comprises the following steps: before underground drilling, introducing contribution values to quantify the importance of different working condition characteristics, and carrying out interpretability analysis on the output of a working condition classifier of each working condition; a judgment matrix of each working condition is constructed according to contribution values of different working condition characteristics to each working condition, so that a weight vector of each working condition is obtained, and a data-driven objective weight distribution method is established; during underground drilling, underground measurement while drilling data are collected, and underground drilling parameter data can be directly obtained; according to the weight vector of each working condition and the working condition index value of each working condition, the working condition of each window is decided through multi-classifier fusion; and when a preset number of different working conditions are accumulatively output every time, updating the feature vector of each window and the working condition index threshold value of each working condition, and establishing a dual dynamic updating strategy pair to adapt to a complex and changeable drilling environment. According to the method, the accuracy and the real-time performance of working condition identification are improved.

A coal-mine underground composite mud pulse measurement while drilling system and a method. The system comprises a rotary valve sub (1), a positive pulse sub (2), a drive sub (3), and a circuit conversion adapter (4) which are connected in sequence, wherein the rear end of the circuit conversion adapter (4) is sequentially connected to a battery cylinder sub and a measurement while drilling sub; the drive sub (3) can control a piston (204) in the positive pulse sub (2) to act so as to control blocking or opening of a conical flow channel to generate a positive pressure pulse; a measurement while drilling sub acquisition module can acquire a measurement parameter, and a measurement while drilling sub master control module can control working of a servo motor in the rotary valve sub (1), so that the overlapping area between stator flow passing channels (1031) and rotor flow passing channels (1044) in the rotating valve sub (1) changes periodically to form mud continuous pulses.

The invention discloses a coal seam roof and floor aquifer advanced area treatment grouting drill hole layout method. The method comprises the steps that an advanced area grouting transformation layer position in a coal seam roof and / or a coal seam floor is determined; the first diffusion radius of the grouting slurry in the water-bearing stratum is obtained through theoretical calculation, the second diffusion radius of the grouting slurry in the water-bearing stratum is obtained through numerical simulation calculation, and the smaller one of the first diffusion radius and the second diffusion radius is the diffusion radius of the grouting slurry; determining hole distribution shapes of the grouting drill holes, wherein the hole distribution shapes of the grouting drill holes comprise a fan shape, a feather shape and a comb shape; determining grouting drilling track design parameters; and directional advanced drilling construction is conducted according to the grouting drilling track design parameters, drilling parameters are obtained in real time through the measurement-while-drilling device in the construction process, and the drilling track is adjusted in real time according to the grouting drilling track design parameters till grouting drilling hole distribution operation is completed. By the adoption of the method, selection of the grouting transformation layer position is more accurate and reasonable; the problems that grouting drill holes in an advanced area are not scientific and inaccurate in layout and low in design efficiency are solved.

The invention discloses a lithology data drive identification method based on new Austrian tunnel excavation while-drilling data, and relates to the technical field of lithology identification. According to the method, an ADASYN oversampling method is adopted to process the MWD data, and the problem of multi-dimensional data imbalance of the MWD data is solved; hyper-parameter optimization is carried out on the lithology identification model by using a grid search algorithm, so that the generality capability and the identification capability of the identification model are further improved; and the optimized GS-ADASYN-XGBoost is selected to classify the measurement while drilling (MWD) data, so that the accuracy of an identification result can be effectively improved.

The invention relates to an underground multi-mode overflow monitoring system and method, and belongs to the technical field of well drilling monitoring, the system is arranged in an axial through hole of a drill collar body, and the system comprises a central fluid channel assembly comprising a Venturi tube section communicated with the through hole; the annular sensor array assembly comprises a barrel which is arranged on the outer side of the Venturi tube section in a sleeving mode and attached to the inner wall of the drill collar body, an annular flow channel is formed in the position, corresponding to a high-pressure area of the Venturi tube section, in the barrel, one end of the annular flow channel is closed, and the other end of the annular flow channel is a Venturi drainage ejector communicated to the high-pressure area of the Venturi tube section; the annular flow channel is provided with a plurality of drainage channels, and the annular flow channel is provided with a multi-mode sensor along the circumferential inner wall of the annular flow channel; a plurality of sampling holes communicated with the drainage channel are formed in the drill collar body; the system further comprises a processor, all the sensors are connected with the processor, and the processor communicates with the measurement-while-drilling system. The method and the device have the effect of improving the stability of monitoring work in a complex drilling environment.

The invention relates to a method for sidetrack drilling of a short-radius horizontal well through a continuous pipe, which relates to the field of drilling engineering and comprises the following steps that: step 1, an integrated whipstock is tripped into a well by a whipstock drilling tool assembly when the continuous pipe drills once; 2, a continuous pipe one-time drilling windowing drilling tool assembly conducts windowing along the integrated whipstock; 3, drilling the deflecting section from the window by a continuous pipe sidetrack drilling short-radius horizontal well deflecting section drilling tool assembly; and 4, drilling the horizontal section from the deflecting section by the continuous pipe sidetrack drilling short-radius horizontal well horizontal section drilling tool assembly. The device has the beneficial effects that continuous circulation can be achieved during tripping of the coiled tubing, and the risk that the coiled tubing is stuck due to sand setting is reduced. A wet joint is not required to be connected with an underground measurement-while-drilling instrument, and the electrical connection mode is continuous and reliable. The drilling tool does not need to be frequently connected / disassembled at a wellhead; and tripping speed is high.

The invention discloses a logging system and method based on while-drilling azimuth gamma imaging, and the system comprises a data collection device which is used for collecting the motion parameters of a gamma sensor in real time in the while-drilling measurement process, and the gamma information, collected by the gamma sensor, in a stratum; the sector configuration device is used for dividing the well circumference into a plurality of sectors according to preset azimuth intervals; the tool face measuring device is used for collecting magnetic tool face information in real time in the measurement while drilling process and combining the magnetic tool face information with the motion parameters to obtain a dynamic gravity tool face so as to determine the actual distribution condition of gamma information in each sector; and the imaging device is used for generating a dynamic while-drilling azimuth gamma image according to the actual distribution condition of the gamma information in each sector. According to the method, accurate while-drilling azimuth gamma imaging is obtained, and dynamic while-drilling azimuth gamma imaging can be generated for the whole while-drilling measurement process.

The invention discloses a real-time guiding control system and method for a borehole track of a wireless measurement-while-drilling instrument, and belongs to the technical field of drilling engineering.The real-time guiding control method comprises the steps that the wireless measurement-while-drilling instrument collects borehole attitude data and environmental factor data, and fusion data is generated; based on the fusion data and the historical guiding effect data, generating adaptive control parameters through an adaptive learning mechanism; performing channel adaptation processing and dynamic compensation on the adaptive control parameter to generate a compensation control signal; the compensation control signal is used for controlling the operation posture of the guiding tool, the deviation between the actual well track data and preset target well track data is calculated, and track deviation data is generated; and learning parameters of the adaptive learning mechanism are updated based on the trajectory deviation data. Multi-source data fusion perception, intelligent decision based on a self-adaptive learning mechanism, dynamic compensation communication of channel adaptation and closed-loop feedback updating based on trajectory deviation are adopted, and real-time guiding control over the well trajectory can be achieved.

According to the technical scheme, the method comprises the steps that the basic depth value of a current drilled well is determined; in the drilling process, a depth increasing mark is generated according to first position information obtained through sensing of the first position sensor and second position information obtained through sensing of the second position sensor, and the sensing information represents the position of a detection point; a drilling depth value is determined based on the depth increase mark and the base depth value. According to the scheme of the embodiment of the invention, the drilling distance of the tool is determined according to the data measured by the two detection points in the measurement-while-drilling tool, and the drilling underground depth is obtained through accumulation, so that depth information required for track closed-loop control in drilling construction operation is provided; the problems that an existing measurement-while-drilling tool cannot obtain the drilling depth underground, and underground closed-loop control is difficult to carry out are solved.

The invention discloses a digital twinning-based intelligent control system and method for butt-joint drilling of a horizontal well penetrating through a goaf coal pillar, and relates to the technical field of drilling and coal mine safety. The system comprises a data acquisition and transmission module for acquiring and transmitting multi-source heterogeneous data of a to-be-drilled goaf; the digital twinning module constructs a digital twinning model; the while-drilling perception and dynamic risk assessment module is used for acquiring and processing while-drilling measurement data and fusing the data with digital twinborn model data to generate a visual dynamic risk field; the intelligent decision and control module is used for generating a safe drilling path and a drilling parameter control instruction; the execution and well control module executes the control instruction and regulates and controls drilling equipment and a well control device; and the man-machine interaction module is used for displaying the risk information and realizing man-machine According to the method, the conversion of drilling safety from passive response to active prediction and intelligent control is realized, and the safety and the success rate of drilling operation penetrating through the goaf coal pillar are improved.