649 results about "Directional drilling" patented technology

The invention discloses a directional drilling track accurate control technology based on machine learning, and relates to the technical field of drilling engineering. The directional drilling track accurate control technology comprises the following steps that underground parameters of a drilling tool during underground operation are obtained; establishing a dynamic model based on the drilling tool structure and the motion state; based on the dynamic model, introducing a long-short-term memory neural network, and constructing a hybrid prediction model; drilling parameters are input into the hybrid prediction model, and trend information of multiple tracks is output; based on current geological conditions, drilling tool configuration and operation safety constraints, performing simulation evaluation on the trend information of the plurality of candidate tracks, and screening out an optimal track meeting track precision and underground safety requirements from the candidate tracks; based on the optimal track, control strategy input is constructed, and a state space containing a tool face angle, target azimuth deviation and a drilling tool state is set; and through a deep reinforcement learning method, an advanced adjustment instruction for the guiding tool is generated, and drilling operation is executed according to the optimal track and the advanced adjustment instruction.

The invention relates to a geotechnical engineering geological investigation system and an investigation method thereof, which are used for solving the problems of drilling redundancy, repeated model correction and long period caused by traditional uniform hole distribution. The system comprises a geophysical exploration module, a rock-soil body structure feature extraction module, a geological abnormal area identification module, a survey detection point dynamic optimization module, a drilling sampling analysis module and a geotechnical engineering stability evaluation module. Earth material exploration is carried out on representative points to obtain a comprehensive geophysical prospecting data set, inversion is carried out according to the comprehensive geophysical prospecting data set to obtain a three-dimensional rock-soil structure, an abnormal area is recognized, accordingly, the drilling layout is dynamically optimized, and stability evaluation is completed at a time after a small amount of directional drilling sampling is carried out. By adopting the system, a high-precision geologic model and a stable evaluation result can be obtained with fewer drilled holes in a preliminary exploration stage, the cost is remarkably reduced, and the period is shortened.

The invention discloses an earth surface directional drilling high-pressure deep hole grouting construction method based on steel sleeve hole fixing. The earth surface directional drilling high-pressure deep hole grouting construction method comprises the following steps that firstly, a directional drilling machine is used for vertically drilling a grouting hole downwards; secondly, a plurality of steel floral tubes are sequentially put down in the three-opening first branch grouting hole; thirdly, cement-bentonite-based sleeve shell materials are continuously injected into the first section of the steel floral tube to the inner bottom of a first branch grouting hole of the three-opening hole, and an annular space between the first branch grouting hole of the three-opening hole and the steel floral tube string is filled with the cement-bentonite-based sleeve shell materials; fourthly, a packer is lowered to the bottom of the three-opening first branch grouting hole; a packing section is formed in front of the packer; and fifthly, cement grout is injected into the grouting pipe, grouting is conducted on the packing section, the finally-set cement-bentonite-based casing material is split and damaged under the effect of grouting pressure, and the grouting grout is injected into the stratum to be reinforced through the grout channel. According to the method, the hole collapse phenomenon when the grouting hole penetrates through the unfavorable geological section can be prevented, the grouting stopping effect of the packer is guaranteed, and retreating type segmented grouting construction is guaranteed.

The invention relates to the technical field of mine underground equipment, in particular to crawler-type high-gas coal seam drilling equipment based on a double-channel drill rod, which comprises a walking chassis, the double-channel drill rod, a hydraulic slotting system and a negative pressure deslagging device. Crawler-type composite drilling equipment is provided, process integration is carried out through breakthrough of three core technologies, directional drilling (a diamond drill bit and a spiral groove drill rod), hydraulic slotting and negative pressure deslagging are integrated into single equipment, the working procedure switching time is shortened, synchronous slotting and deslagging operation is achieved through a double-channel drill rod, and the working efficiency is improved. The problems of energy consumption and blockage are solved; and meanwhile, gas accidents are prevented.

The invention discloses a boulder dense stratum geological radar detection method based on horizontal directional drilling, which comprises the following steps of: firstly, drilling into a stratum from the earth surface at a smaller incidence angle by adopting the horizontal directional drilling, and drilling along the central axis of a shield tunnel to form a drill hole with the diameter of about 30cm; after drilling is completed, the geological radar is fixed to the rear portion of the drill bit through a rigid connecting device, and the geological radar synchronously advances and rotates along with the drill bit. Four rolling balls are arranged at the bottom of the geological radar to reduce motion resistance and are tightly attached to the inner wall of a drill hole to ensure detection stability. The geological radar is driven by rotation of a drill bit to rotate by 360 degrees for detection, so that stratum information around a drill hole is obtained; then, performing image recognition on drilling slag, and establishing a corresponding relation between a geological radar image and a stratum type so as to optimize interpretation precision of geological radar data; and finally, in combination with geological radar detection data and a drilling deslagging analysis result, generating a boulder distribution profile map, and predicting the boulder distribution condition on the tunneling path of the shield tunneling machine.

The invention relates to the technical field of coal mine underground drilling equipment, in particular to a gyrator for a coal mine directional drilling machine and a using method.The gyrator comprises a shell, an input shaft and an output shaft, the shaft extension end of the output shaft is provided with a pressure balance type multiple dynamic sealing system, and the sealing system comprises a main sealing unit, a pressure balance unit and a dustproof sealing unit; the pressure balance unit comprises a sealing cavity, a lubricating grease injection channel and a grease injection nozzle; pressure lubricating grease is injected into the sealing cavity through the grease injection nozzle, so that a dynamic positive pressure barrier higher than the internal medium pressure of the gyrator and the external pressure of the environment is formed in the sealing cavity; through a triple sealing structure formed by combining the spring seal main seal, the pressurization balance cavity and the V-shaped dustproof ring and by combining an active injection and dynamic balance using method, passive blocking of traditional sealing is converted into active defense, the problem of invasion of high-pressure slurry and pulverized coal is effectively solved, and the service life of the sealing device is prolonged. And the working reliability and the service life of the equipment are obviously improved.

The invention belongs to the technical field of coal mine green mining and disaster prevention and control, and particularly relates to a caving area gangue grouting and filling method for recycling underground coal mine water resources. And zero emission and efficient cyclic utilization of water resources are realized. The coal gangue is used as a main filling aggregate and is directly digested underground, so that the problems of land occupation and environmental pollution caused by ground stockpiling are avoided, and harmless and large-scale treatment of the coal gangue is realized. A water treatment system and a gangue treatment system are combined into a whole, the comprehensive operation cost of a mine in the aspects of water disaster prevention and control, gangue treatment and outsourcing of a water source is remarkably reduced through a cyclic operation mode, and the cost benefit is high. Accurate detection and effect verification of the previous and later ponding areas are carried out through a geophysical prospecting means, and measures such as directional drilling and safety monitoring are combined, so that controllability and safety of the whole operation process are ensured, and the safety and reliability are high.

The invention discloses a small hole heat conduction and gas migration channel construction system and method based on seabed horizontal directional drilling, and relates to the technical field of ocean engineering and energy exploitation. A sea surface operation module is used for controlling all modules of the system to work cooperatively and supplying energy to the system; the seabed drilling guide module is used for realizing layer-entering drilling and channel pre-construction; the signal detection module is used for monitoring the spatial position and attitude parameters of the seabed drilling guide module in a seabed bottom layer in real time; the small hole perforation flow guide module is used for constructing a heat conduction and gas migration channel network after the drill bit enters a target hydrate layer; after the heat conduction and gas migration channel network is formed, the seabed drilling guide module continues to drill out of the seabed bottom layer, and a channel formed by the seabed drilling guide module is used for dragging a pipeline into a reservoir. A reusable mining channel suitable for the deep sea environment is constructed, the gasification efficiency is effectively improved, and stratum disturbance and energy consumption are reduced.

The invention discloses a ground single-hole multi-branch water jet radial coal breaking and permeability increasing extraction method, which comprises a directional drilling system, a filling system, a water jet coal breaking system, a deslagging system and a gas extraction system, and is characterized in that a vertical drilling hole is constructed on the ground, a centralizer and a whipstock are arranged at a coal seam junction, and a drill bit deflects to enter a coal seam construction horizontal branch drilling hole; three horizontal branch drill holes are constructed in each coal seam, the included angle is 120 degrees, after horizontal branch drill hole construction is completed, water jet coal breaking is carried out once every time a drill rod is withdrawn, coal seam air permeability is improved until all the drill rods are withdrawn, the process is repeated, drilling and water jet coal breaking work is carried out on other horizontal branch drill holes, and drill rods and drilling tools are withdrawn after all the work is completed. And the flange of the ground casing pipe is connected into an extraction system. The gas extraction work of the ground drilling coal seam group is realized; drill retreating and water jet coal breaking are carried out synchronously, and the air permeability of a coal seam is improved; gas extraction work of the coal seam group is achieved through ground drilling, and the gas control level is improved.

The invention discloses a ground directional drilling goaf passing leaking stoppage method which comprises the steps that hole data of a goaf are obtained, and the hole data comprise the hole depth and the crack width; when the width of the crack is larger than 5 mm, a foundation plugging material is adopted for conducting foundation plugging on the hole of the goaf, and the foundation plugging material is an inert material and cement paste; judging whether basic plugging fails or not to obtain a first judgment result; if the first judgment result shows that the basic plugging fails, a flexible plugging material is adopted for conducting medium-term plugging on the holes in the goaf, and the flexible plugging material is a material formed by mixing hemp fiber, sawdust, soybeans and water. According to foundation plugging, a large channel is filled through particle bridging, a primary plugging layer is formed after cement paste is solidified, the flexible material can adapt to trace deformation of surrounding rock through deformation filling, and micro cracks of a foundation layer are plugged. Through graded gradient filling, the leaking stoppage effect can be greatly improved.

The invention discloses an autonomous rock-soil body drilling instrument based on the bionic principle and a drilling method thereof.The autonomous rock-soil body drilling instrument comprises a drill bit, a propelling steering mechanism, an anchoring mechanism, an electric control integrated module and a ground control unit, and the drill bit, the propelling steering mechanism and the electric control integrated module are sequentially connected; anchoring mechanisms are arranged between the drill bit and the propelling steering mechanism and between the propelling steering mechanism and the electric control integrated module; the drill bit is used for cutting a rock-soil body and backwards conveying and discharging the cut rock-soil body to the outside of the drill bit; the propulsion steering mechanism is used for driving the drilling instrument to linearly advance and steer; the anchoring mechanism is used for providing counterforce required by drilling or resetting for the drilling instrument through meshing and separation with surrounding rock and soil bodies; and the electric control integrated module is connected with the ground control unit through an integrated communication cable. The device simulates an anchoring-propelling mechanism of natural organisms, realizes autonomous drilling without an external counter-force device, a slurry protection wall and a probe rod, and has the capabilities of multi-directional drilling, active obstacle avoidance and real-time acquisition of a continuous geological section.

The invention relates to the technical field of coal mines, in particular to an underground high-confined aquifer area treatment method which comprises the following steps: S1, performing underground directional drilling treatment, layering a high-confined aquifer according to the thickness and rich water distribution characteristics of the high-confined aquifer, and constructing a plurality of main directional drill holes in a directional drill site, then a plurality of branch directional drill holes extend from the same layer or different layers of each main directional drill hole to the plane direction of the treatment area from the directional drill site, and a grouting channel is formed; s2, grouting is conducted on the directional drill hole; and S3, underground common drill verification is carried out, and the treatment effect is checked through common drill holes which are arranged in parallel at equal intervals. Compared with a common drilling treatment working face, average construction drilling holes are greatly reduced, casing pipes and cement materials can be saved, the moving frequency and construction time of a drilling machine are reduced, and manpower and material resources are reduced.

The invention relates to the technical field of circuit load state monitoring, and discloses a directional drilling pipeline surface coating damage characteristic analysis method based on data inversion, which comprises the following steps: injecting a dual-frequency composite excitation signal into a pipeline transmission loop; locking a current phase, collecting a magnetic flux gradient vector and performing orthogonal decomposition; according to the method, impedance distortion caused by medium heterogeneity is eliminated through the pilot frequency response difference, the problem of misjudgment caused by the fact that traditional detection depends on medium isomorphism hypothesis is solved, and the detection accuracy is improved. And accurate identification of transmission load leakage impedance abnormity is realized.

The invention discloses a guiding system and method for penetrating through a special site through horizontal directional drilling, and relates to the technical field of horizontal directional drilling. Comprising a control system, a sensor arranged at the end of a drill rod or a drill bit and used for collecting position signals of the end of the drill rod or the drill bit, a guiding instrument used for receiving signals of the sensor and a carrying device used for carrying the guiding instrument, and the guiding instrument is used for transmitting the received signals of the sensor to the control system. And data analysis and processing are carried out through the control system. By arranging the carrying device, the guiding instrument synchronously moves along with the drill rod, the problems that the guiding instrument cannot be held by a person to reach a special site in a long distance or the guiding positioning is unstable and the precision is reduced when the guiding instrument is carried by a ship are solved, the personnel safety is ensured, and the position of a drill bit is corrected in real time through the control system; the drill bit is kept at the preset position all the time, and it is guaranteed that an actual guide hole is consistent with a penetrating design curve track.

A method can include receiving data acquired via a drillstring in a borehole in a subsurface environment; determining boundary locations for formations in the subsurface environment using at least a portion of the data, where an end of the borehole is disposed in one of the formations; determining extended boundary locations in the subsurface environment for a region beyond the end of the borehole using the boundary locations; determining a target location in the region; generating a trajectory from an end of the borehole location to the target location; and executing a directional drilling system to control directional drilling of the drillstring that extends the borehole beyond the end of the borehole towards the target location.

The invention relates to the field of underground coal mine drilling, in particular to an intelligent optimization method for rotation stable inclination parameters for pneumatic directional drilling, which comprises the following steps of: preprocessing acquired actual drilling data, complementing missing values through an average number filling method, and perfecting a drilling data set; based on the complemented data set, a mutual information analysis method is adopted to analyze the correlation between the characteristic quantity and the target value, and the final characteristic quantity is determined; fitting parameters of the drilling speed prediction model, the wind pressure prediction model and the pulling pressure prediction model by adopting a feedforward neural network method; and finally, forming a multi-objective optimization problem by taking the obtained drilling speed model, the wind pressure model and the pulling pressure model as objective functions and taking upper and lower bounds of the feeding pressure, the wind volume and the rotation pressure as constraint conditions, and solving by adopting an NSGA-II algorithm to obtain optimal operation parameters. The drilling efficiency can be improved, and the safety and economical efficiency of operation are enhanced.

The invention discloses a main machine for directional drilling construction, an angle adjusting device and an angle adjusting control method of the main machine. Comprising a feeding device, a middle angle adjusting device arranged below the rear portion of the feeding device, a front angle adjusting device arranged at the front end of the feeding device, a carriage device and a sliding centralizer which are arranged on the feeding device, a gyrator installed on the carriage device, a driving drill rod set in the gyrator, and a clamping shackle device arranged on the feeding device. The rod loading and unloading mechanical arm is arranged on the middle angle adjusting device; the orifice blowout prevention device is arranged at the front end of the clamping shackle device; the carriage device can drive the gyrator to move on the guide rail of the feeding device, and the gyrator and the driving drill rod set are coaxial with the clamping shackle device. The automatic directional drilling machine is suitable for underground coal mine automatic directional drilling machine construction, the drilling machine can achieve integral layout, and the structure is compact.

The invention discloses a ballasting deviation rectifying construction device for a rectangular pipe gallery in a soft soil stratum and a design method of the ballasting deviation rectifying construction device. The construction device comprises a ballasting device, a lifting device, a horizontal hole digging device and a sediment discharging device. The ballasting device lowers the high position of the pipe gallery through a counterweight measure, the lifting device limits the low position of a pipe joint, the horizontal hole digging device digs soil bodies on the inclined high position and the low side of the pipe gallery, and the silt discharging device transfers and discharges the soil bodies, squeezed into the pipe gallery, on the inclined high position and the low side of the pipe gallery in the ballasting process. The design method comprises correction work of the inclined pipe gallery, ground work arrangement and design checking calculation of a horizontal directional drilling scheme, and has the advantages that the excavation volume is reduced, the construction period is shortened, the water leakage risk is avoided, the construction effect can be ensured to reach an expected target through comprehensive evaluation and careful arrangement of construction devices, and the construction efficiency is improved through a horizontal directional drilling machine. And accurate drilling operation can be carried out according to actual construction requirements.

The invention belongs to the technical field of geological exploration, and particularly discloses a directional drilling exploration method, which comprises the following steps: constructing a three-dimensional fracture network model of a rock mass to be explored; based on the three-dimensional fracture network model, dynamically optimizing the axis of the main drill hole and the tracks of the multiple spiral branch drill holes; a rock mass integrity index is obtained through the while-drilling sound wave testing system; drilling parameters are dynamically regulated and controlled in real time according to the rock mass integrity index and the uniaxial compressive strength; drilling is carried out according to the dynamically regulated and controlled drilling parameters, the dynamically optimized axis of the main drill hole and the tracks of the multiple spiral branch drill holes, and the occurrence parameters of the structural plane in the hole are determined according to the information in the hole in the drilling process. According to the method, the main drill hole axis and the spiral branch drill hole track are dynamically optimized through the three-dimensional fracture network model, and the structural plane exposure angle error can be reduced; through a space detection network formed by combining the main drill holes and the spiral branch drill holes, the three-dimensional geological information acquisition density and the number of unit footage revealing structural surfaces are greatly improved.

The invention relates to the technical field of coal mine overlying strata separation layer grouting and filling mining, and particularly discloses an overlying strata separation layer grouting and filling mining underground grouting drilling construction method and a grouting system.The grouting system comprises a ground slurrying system, a slurry conveying drilling hole, an underground grouting pool, a high-pressure plunger pump, a directional drilling structure and a grouting pressure control system; slurry is prepared on the ground surface, and the slurry is pumped to an underground grouting pool through a slurry conveying drill hole; a high-pressure plunger pump is used for injecting slurry into the overlying strata separation layer through a directional drilling structure; the construction of the underground directional grouting drilling is carried out before the working face is mined, the track of the underground directional grouting drilling comprises a trepanning linear section, a pitching-up section, a linear section, a pitching-down section and an open hole section which are connected in sequence, upward penetrating and downward penetrating of a grouting key layer bottom plate are achieved, and a final hole is located below the key layer bottom plate by 5 m. The problem that ground drilling construction cannot be carried out under the complex terrain is solved, and the method has the advantages of being low in investment, high in efficiency and capable of releasing pressing and covering coal resources.

Methods and systems are provided for automatically controlling a drilling trajectory during directional drilling of a build portion or curve or bend of a wellbore.

This invention discloses a method and system for graded backfilling of goaf areas after end-face mining, relating to the field of goaf filling technology. The method includes: acquiring the structure of the target goaf, dividing it into backfilling units to obtain multiple backfilling units; acquiring multiple state-aware data sequences; acquiring multiple state-aware features; identifying the risk levels of the multiple backfilling units to obtain multiple identified backfilling units; performing independent analysis of graded backfilling schemes to obtain multiple independent backfilling schemes, correcting for adjacent influences, and obtaining a target graded backfilling scheme; remotely controlling an unmanned forklift to place prefabricated lightweight inflatable blocks according to the target graded backfilling scheme; using a directional drilling rig to construct grouting boreholes; and performing secondary grouting control on the initial backfilling area of ​​the prefabricated lightweight inflatable blocks. This solves the technical problem in existing technologies where uneven distribution of backfilling strength leads to insufficient overall stability and safety, achieving the technical effect of improving the stability and safety of goaf backfilling.

This invention relates to the field of exploration and development, and discloses a method, system, and equipment for quantitative analysis of friction resistance in directional drilling. The method includes: acquiring logging information and drill bit speed in the drilled section; constructing a drilling speed prediction model using the drill bit speed and the composite drilling data; determining a bottom hole pressure prediction model based on the directional drilling data and the drilling speed prediction model; combining the bottom hole pressure prediction model with the surface pressure to determine a drill string axial friction resistance model; and calculating the axial friction resistance in the real-time directional drilling process using the drill string axial friction resistance model based on the logging information and drill bit speed. The quantitative friction resistance analysis method disclosed in this application solves the problem of difficulty in accurately assessing bottom hole pressure and axial friction resistance, enabling dynamic assessment of theoretical bottom hole pressure and axial friction resistance. It allows for full-process monitoring and post-drilling analysis of sliding drilling, providing a basis for improving the bottom hole drill string load condition.

The application discloses a downhole large-diameter drilling equipment, which comprises a large-diameter pipe-following drilling machine, a large-diameter pipe-following directional drilling system, a collapsed body metal detection and breaking system and a self-moving multifunctional rescue operation cabin; wherein the large-diameter pipe-following drilling machine is used for efficiently constructing a large-diameter horizontal hole as a rescue passage; the large-diameter pipe-following directional drilling system adopts a first-level, second-level or third-level hole protection mode according to the length of a collapsed body and a stratum; the system can realize efficient drilling and accurate guidance in a complex collapsed stratum, and guarantee that the drilling quality and the drilling track meet the requirements; the collapsed body metal detection and breaking system can finely detect metal components in the collapsed body, determine the accurate position and scale of the metal components, and realize rapid cutting of the metal components; and the self-moving multifunctional rescue operation cabin can be used as an auxiliary obstacle removing at the bottom of a rescue hole to improve the rescue drilling construction efficiency while guaranteeing the safety of personnel in the cabin.

The application relates to a directional drilling structure for a navigable river and an application method thereof, and relates to the drilling technology field; the directional drilling structure for the navigable river comprises a drill bit body, an agitating frame is rotationally connected to the end of the drill bit body, a control element is arranged on the drill bit body, and the control element is used for driving the agitating frame to rotate; the application has the effect of reducing the possibility of yaw in the drilling process of the drilling equipment.

The utility model relates to the technical field of directional drill auxiliary devices, in particular to an auxiliary support for a directional drill to penetrate through a geological fault, which is characterized in that a U-shaped frame is hinged to the upper end of a frame, a mounting plate is integrally arranged on the U-shaped frame, an angle adjusting device is arranged below the mounting plate, and the angle adjusting device is connected with the U-shaped frame. The lower end of the frame is fixedly connected with four groups of adjustable supporting leg devices which are arranged in a rectangular array; each adjustable supporting leg device comprises a supporting plate fixedly connected with the frame, the supporting plate is rotationally connected with an adjusting shaft, the adjusting shaft is integrally and coaxially provided with an adjusting screw rod, the adjusting screw rod is coaxially and correspondingly provided with a ground supporting rod, the ground supporting rod is coaxially provided with a threaded hole matched with the adjusting screw rod in a threaded mode, and the adjusting screw rod is provided with a threaded hole matched with the adjusting screw rod in a threaded mode. The upper edge of the ground supporting rod is fixedly connected with two connecting rods which are symmetrically arranged about the axis of the ground supporting rod, the end of each connecting rod is fixedly connected with a guide sleeve, and the lower end of the mounting plate is fixedly connected with two guide rods which correspond to the guide sleeves in a one-to-one mode and are vertically connected with the guide sleeves in a sliding mode.

The application provides a rotary steering drilling mechanism, which comprises a drill bit, a drill collar with a mud channel, multiple groups of push assembly for adjusting the drilling direction of the drill bit, a on-off valve assembly for leading mud in the mud channel into a designated push assembly, and a detection control assembly for adjusting the communication position of the on-off valve assembly and the push assembly, wherein the drill collar is connected with the drill bit; multiple groups of the push assembly are arranged along the circumference of the drill bit; the on-off valve assembly is located in the drill collar and connected with the drill bit; and the detection control assembly is fixedly installed in the drill collar. The application has the advantages of simple structure, convenient operation, high directional drilling accuracy and the like.

The utility model discloses a directional drilling unjamming device relates to directional drilling unjamming technical field, including base, be equipped with lifting assembly on the base and be located opening both sides respectively, be equipped with hammering subassembly on the base and be located opening rear, the utility model will the fixed mounting of bottom plate be in the drill rod, and make the drill rod embed in the opening and the mouth, the plug -in block is inserted into the dovetail groove through the dovetail rod at this time, the plug -in block is installed at the mouth, the first through -hole and the second through -hole are located on the same axis at this time, insert the limiting bolt into the first through -hole and the second through -hole, and the limiting nut is screwed on the limiting bolt, the upper slip body is inserted into the upper slip seat at this time, and then the drill rod is fixed, the upper slip seat is pushed through the lifting assembly, and then the upward thrust is provided to the drill rod, and the vibration force and the knocking force are provided to the upper slip seat through the hammering subassembly, and then the drill rod is unjammed.

This invention provides a method for expanding the functionality of directional boreholes for grouting in Ordos limestone aquifers. The method includes acquiring and analyzing mine hydrogeological data, determining the lithological structure characteristics, sedimentary characteristics, geological structural distribution parameters, and hydrogeological parameters of the coal seam floor, constructing a stratigraphic structure model, analyzing the hydrogeological parameters based on the stratigraphic structure model to determine the treatment strata in the Ordos limestone aquifer, analyzing the geological structural distribution parameters based on the stratigraphic structure model to determine the trajectory design parameters for the directional borehole, determining the function of the directional borehole according to the project objective and pre-defined directional borehole function classification information, and designing the directional borehole corresponding to the treatment strata and / or the borehole trajectory design parameters. This method refines the functional classification of directional boreholes, provides design methods for directional boreholes with different functions, expands the functionality of directional boreholes, and makes the surface area treatment technology for Ordos limestone water hazards more comprehensive, applicable, and targeted.

The utility model discloses a guide drilling tool for horizontal directional drilling pipe laying construction, which comprises a drill rod, a probe chamber and a replaceable drilling tool which are connected in sequence, and during complex stratum construction, a guide drill bit at the front end of the probe chamber can be quickly replaced by a drill bit suitable for different geological conditions for drilling operation through a second connecting sleeve. Or the reamer is replaced for reverse reaming operation. According to the utility model, the drill bit is quickly and conveniently detached; besides, during reverse reaming operation, due to the fact that the probe chamber is reserved, when the drill bit or the reamer is clamped by debris such as broken stones and metal pieces in the ground layer, the accurate clamping position of the drill bit or the reamer can be obtained by means of a detection signal sent by the probe in the probe chamber, accurate basis is provided for troubleshooting treatment, and construction efficiency is improved.