1564results about "Directional drilling" patented technology

A method can include rendering a graphical user interface to a display; receiving data; responsive to determining boundary locations for formations in the subsurface environment using the data, automatically rendering the boundary locations in the graphical user interface; responsive to determining extended boundary locations in the subsurface environment for a region beyond an end of the borehole using the boundary locations, automatically rendering the extended boundary locations in the graphical user interface; responsive to determining a target location in the region using the extended boundary locations, automatically rendering the target location in the graphical user interface; and, responsive to generation of a trajectory from an end of the borehole location to the target location, automatically rendering the trajectory in the graphical user interface.

A method can include acquiring resistivity measurements using a downhole tool of a drillstring disposed in a borehole in a subsurface environment; performing a resistivity measurement-based inversion to generate a structural representation of a portion of the subsurface environment that includes an end of the borehole; generating a control instruction using an artificial intelligence framework and the structural representation, where the control instruction is for lengthening the borehole along a current borehole trajectory or a different borehole trajectory; and controlling the drillstring to lengthen the borehole based on the control instruction.

This disclosure relates to a predictive lookahead system that generates simulated or predicted wellbore trajectory plans in a drilling environment and determines when a simulated wellbore trajectory plan is at risk based on various lookahead metrics, such as torque and drag (T&D) metrics and hydraulic pressure metrics. For instance, the predictive lookahead system uses a predictive framework with various steps to determine if drilling metrics for a predictive wellbore trajectory plan, such as T&D metrics and / or hydraulic pressure metrics corresponding to subsurface formations, may exceed one or more risk threshold limits and cause damage to the drill bit, drill string, casing, and / or surface rig. The predictive lookahead system determines whether a predictive wellbore trajectory, which aims to converge with a previously planned wellbore trajectory, can proceed safely along the projected trajectory without exceeding T&D, pressure window, or other lookahead metric limits in the wellbore.

The disclosure describes an expanding drill device for expanding a pilot bore by moving the expanding drill device along a specified drilling line comprising: a housing; a drill head that has a cutting wheel which is arranged on the drill side of the expanding drill device so as to be rotatably mounted and driven about a rotational axis and relative to the housing and on which at least one drill tool for loosening the ground or the rock is arranged; and a drill-side connection for producing a connection to a pipe section located in the pilot bore on the drill side, wherein the drill side centrally has at least one receiving chamber for the loosened ground or the loosened rock, said receiving chamber being connected to a material conveyor device of the expanding drill device.

The invention discloses a directional drilling track self-adjusting measuring system. Relates to the technical field of directional drilling. The method is used for solving the problem that the current coal mine directional drilling track control technology cannot meet the requirements of underground safety production for high precision, fast response and strong adaptation. According to the technical scheme, the system comprises a multi-dimensional sensor module, a data processing module, a control module, an execution mechanism and a feedback module. According to the technical scheme, the directional drilling track self-adjusting measuring system is provided, the system response speed and track adaptability are remarkably improved, and the track qualification rate is increased to 98% or above from 70%-80%.

The invention relates to the technical field of geological engineering, in particular to a while-drilling target optimization method and system based on geological engineering integration, and the method comprises the steps: constructing a digital twinborn body of a while-drilling process; driving the digital twinborn body and the real drilling borehole state to update synchronously; comparing the actual drilling data with the model prediction value through the digital twinborn body; results of various track adjustment schemes in a future preset well section are automatically simulated through a digital twinborn body; compared with a scheme which mainly depends on artificial experience to carry out lagging analysis and decision making, is slow in information transmission and low in multidisciplinary collaboration efficiency in the prior art, the method has the advantages that geological and engineering data are deeply fused and automatically processed by constructing a real-time closed-loop decision making system driven by a digital twinborn body; the response speed and decision making scientificity of the underground complex working conditions are remarkably improved, and the crossing from passive response to active optimization is achieved.

A force balanced valve apparatus for downhole steering tools that includes a valve actuator (214), first and second valve bodies (218, 220), an inverse travel linkage (230), and a flow twisting section (208) for pressure balancing. The flow twisting section reorients fluid flow paths by approximately 180°from an uphole valve section (207) of the apparatus to a downhole steering pressure generation section (210). Hydraulic forces are balanced across the valve apparatus are balanced by force balancing pistons (222, 224) responsive to pressures in the steering pressure generation section. The force balanced valve apparatus may generate steering pressure differentials for directional drilling and mud pulse telemetry by modulating fluid flow.

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 provides a drilling control method and system for a self-propelled complex drill bit, and the method comprises the steps: setting a rated cutting torque through obtaining roadbed soil, hydraulic power and geometric parameters, calculating the total propulsion resistance based on the roadbed strength to control the axial jacking force, and carrying out the safety verification of the drag force; calculating a critical flow velocity according to the characteristics of the drilling slag to adjust the discharge capacity and negative pressure of the slurry pump so as to determine an operation boundary; drilling and deslagging are cooperatively executed under the boundary, and the trajectory is corrected by combining a PID algorithm and the propulsion speed is optimized based on the theoretical mechanical drilling speed. According to the method, the technical problems that existing trenchless construction depends on experience to set parameters, scientific quantitative calculation of the slag discharge flow speed and the safety drag force is lacked, and then pipe cable blockage and drainage pipe damage are caused can be solved, and full-system cooperative efficient control of drilling, propelling, slag discharge and guiding based on multi-field coupling calculation is achieved.

The invention relates to the technical field of pre-splitting hole drilling, in particular to a pre-splitting hole angle control device. According to the pre-splitting hole angle control device, the drilling angle and position can be locked during drilling, and the situation that vibration affects the drilling precision is avoided. A pre-splitting hole angle control device comprises a vehicle body, an adjusting frame, a first butt joint frame and the like, the upper side of the right portion of the vehicle body is rotationally connected with the adjusting frame, and the upper side of the adjusting frame is connected with the first butt joint frame. The motor is started to drive the bidirectional lead screw to rotate, so that the limiting frames get close to each other, the first clamping frames are clamped and matched with the limiting frames under the acting force of the torsional springs, the first clamping frames are prevented from moving rightwards, the first clamping frames are locked in a one-way mode, and then the movable frame, the first connecting rod and the adjusting frame are locked; the effects that the air cylinder can be prevented from being damaged when the drilling machine vibrates, and the drilling precision is prevented from being affected are achieved.

Methods and systems are provided for drilling a secondary wellbore relative to a target wellbore, which involve drilling the secondary wellbore with a bottomhole assembly (BHA) that extends from a drill string. The BHA includes a magnetic field detector, a steering component, a drill bit, and at least one processor. The magnetic field detector is configured to detect a time- varying magnetic field generated from a rotating magnetic source of a drilling tool disposed in the target wellbore. The at least one processor is configured to i) use data output by the magnetic field detector to continually determine distance and direction or azimuth of the magnetic source relative to the BHA while drilling, and ii) use the distance and direction or azimuth of the magnetic source relative to the BHA while drilling to adjust the steering of the drilling performed by the BHA as controlled by the steering component of the BHA. The operations of the least one processor can be configured to adjust steering of the drilling of the BHA in order to maintain a set distance and direction or azimuth relative to the target wellbore, autonomously without surface input or interference, whilst drilling with the BHA.

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 water-rich stratum underground cavity targeted treatment method, and relates to the field of underground cavity targeted treatment, and the method comprises the steps: constructing an underground cavity recognition model through improved YOLOv8, and recognizing an underground cavity in a water-rich stratum; a three-dimensional geologic model is constructed, a drilling track pointing to the cavity from the earth surface or the existing structure is designed, targeted drilling is constructed, and a treatment channel is formed; with the cavity as the center, curtain grouting holes are formed, rapid-hardening type double-liquid grout is injected, and a three-dimensional waterproof curtain is formed; underground water in the three-dimensional waterproof curtain is guided and drained through part of targeted drill holes, and desilting is conducted; and self-compacting filling materials are pumped into the cavity through the other targeted drill holes for main body backfilling, and cavity cracks are reinforced by adopting a sleeve valve pipe grouting technology. And the filling and reinforcing effect is verified, and a monitoring system is arranged to monitor the stratum stability. Through a technical path of combining artificial intelligence identification, three-dimensional accurate positioning and active three-dimensional water stop, safe and efficient targeted treatment of the underground cavity of the water-rich stratum is realized.

The invention discloses a multi-source sensing data fused rotary excavating hole-forming verticality online monitoring system and method, and the system comprises a drill bit inclination angle monitoring device which collects and stores the roll angle and the pitch angle of a drill bit, and transmits the roll angle and the pitch angle to a cloud server; the drill rod rotation angle monitoring device collects the rotation angle of the drill rod relative to the machine body and transmits the rotation angle to the drill bit azimuth angle resolving unit; the fuselage attitude monitoring device collects a roll angle, a pitch angle and an azimuth angle of the fuselage and transmits the roll angle, the pitch angle and the azimuth angle to the drill bit azimuth angle resolving unit; the drill azimuth angle resolving unit is used for calculating a drill azimuth angle and transmitting the drill azimuth angle to the cloud server; the cloud server calculates the track of the drill bit and the perpendicularity of the formed hole by combining the formed hole depth and the drill bit position data provided by the rotary drilling rig; and the visual terminal displays the track of the drill bit and the perpendicularity of the formed hole by accessing the cloud server. According to the invention, real-time monitoring of the perpendicularity of the formed hole can be realized, and the construction efficiency and quality of the rotary drilling hole are improved.

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 slope soil layer drilling device, and relates to the field of soil layer drilling, the slope soil layer drilling device comprises a drilling guide sleeve for a drill rod to rotatably and movably pass through, and the outer wall of the drilling guide sleeve is connected with a limiting mechanism for limiting and supporting the drilling guide sleeve in a drill hole; a fine adjustment deviation rectifying mechanism is movably arranged below the limiting mechanism; the limiting mechanism is used for being supported in a drill hole, and the fine adjustment deviation rectifying mechanism is used for conducting fine adjustment deviation rectifying and reducing the risk of hole inclining and the like. When the drilling device is used, a certain supporting effect can be achieved on the side wall of a drilled hole, disturbance of a drill bit on the periphery of the soil body of the drilled hole in the drilling process is reduced, the risk of hole collapse is reduced, deviation correction adjustment is conducted in the drilling process, unqualified holes such as inclined holes are avoided, and the construction quality is guaranteed; and the drilling device is convenient to mount and dismount, and can further guarantee the construction period and quality and save the construction cost in the construction of soil bodies with uneven geology such as slopes.

The utility model relates to the field of drilling tools for wells, in particular to a self-adaptive rotary steering drilling tool which comprises a drill bit body and a damping column, a plurality of blades are sequentially arranged on the crown portion of the drill bit body in the circumferential direction, the cutting faces of the blades are fixedly connected with a plurality of cutting teeth, and mounting holes are formed in the outer side faces of the blades. Steel sleeves are fixedly arranged in the mounting holes, the damping columns are movably inserted in the steel sleeves, the ends, located in the steel sleeves, of the damping columns are fixedly connected with connecting bases, adjusting plates are arranged between the connecting bases and the bottoms of the steel sleeves, and outer-layer low-rigidity spiral springs are connected between the adjusting plates and the connecting bases. An inner layer high-rigidity conical spring is arranged on the inner side of the outer layer low-rigidity spiral spring, and an adjusting assembly for adjusting the adjusting plate and the bottom of the steel sleeve is arranged on the steel sleeve. The drill bit can better adapt to different pressure requirements, and the drill bit is prevented from bearing overlarge impact force, so that the cutting teeth are protected, and the service life of the drill bit is prolonged.

The invention discloses an electro-hydraulic control underground adjustable angle device and an adjusting method thereof. A translation assembly and a rotating assembly in a shell assembly are sequentially arranged from outside to inside, a sliding sleeve of the translation assembly slides in the axial direction of a shell of the shell assembly, and a spiral rod of the rotating assembly is matched with the sliding sleeve through a spiral key to achieve rotating movement and axial movement of the spiral rod; the lower end of the rotating assembly is meshed with the rotating joint assembly through a spherical gear to realize rotation of a rotating joint; the lower end of the shell is connected with the rotary connector through a gear ring, and the included angle between the axis of the gear ring and the vertical axis of the shell is larger than 0 degree. The device has the advantages of being simple in structure, convenient to operate, reliable in performance and high in structure bending angle adjustment control precision; the bend angle is adjusted underground, the requirement for track control of a well with a complex structure is met, and the purpose of completing drilling track control of the well with the complex structure with low cost, high efficiency and high precision is achieved.

The invention discloses geological resource exploration, detection and sampling equipment, and relates to the technical field of geological exploration and detection, the geological resource exploration, detection and sampling equipment comprises a supporting box, four supporting columns are arranged at the bottom of the supporting box, and moving wheels are arranged on the outer sides of the bottom ends of the four supporting columns. According to the geological resource exploration, detection and sampling equipment, two worms rotate synchronously through cooperation of a servo motor, a synchronous wheel and a synchronous belt, a transmission shaft and a transmission square rod are driven to rotate synchronously through meshing transmission between the two worms and four first worm wheels, and an external threaded column and a screw are driven to rotate through cooperation of the transmission square rod and a square groove; the external thread column and the screw are driven to move downwards through thread fit between the external thread column and the internal thread circular groove, so that the screw is screwed into the ground, and the device is fixed through resistance between a spiral blade on the side part of the screw and the ground, so that the device is prevented from being jacked upwards under the counter-acting force of the sampling barrel, and smooth sampling of the sampling barrel is ensured.

A transmitter is carried proximate to an inground tool for sensing a plurality of operational parameters relating to the inground tool. The transmitter customizes a data signal to characterize one or more of the operational parameters for transmission from the inground tool based on the operational status of the inground tool. A receiver receives the data signal and recovers the operational parameters. Advanced data protocols are described. Pitch averaging and enhancement of dynamic pitch range for accelerometer readings are described based on monitoring mechanical shock and vibration of the inground tool.

A rotary steerable drilling system for drilling a borehole comprising a rotary drill bit and a drill string defining a fluid passageway and a drilling fluid for flowing through the fluid passageway. The drill string comprising a bottom hole assembly including a housing, a flow7 channel in the fluid passageway and a valve disposed in the fluid passageway and aligned with the flow7 channel. An actuator is connected to the valve and allowed to move the valve relative to the flow channel to generate a pressure pulse in the drilling fluid in the fluid passageway based on varying a relative position between the valve and the flow channel and creating a differential pressure across the fluid passageway. A piston in hydraulic communication with the differential pressure extends radially from the housing and engages the borehole wall upon the differential pressure.

Provided is a whipstock and well system. The whipstock, in one aspect, includes a coupling section having a first radius of curvature, the coupling section configured to engage with a mill bit when running in hole. The whipstock, in accordance with this aspect, further includes a casing breakthrough section having a second radius of curvature, and a controlled exit section having a third radius of curvature, wherein the second radius of curvature is less than the third radius of curvature.

The invention discloses a horizontal well while-drilling method and system suitable for ultra-deep oil and gas reservoir development, and belongs to the technical field of oil exploration and development. (2) accurate target entering is guaranteed through a marker bed control method and a stable inclination top detection method; and 3) predicting the position of the drill bit after target entering to guide the adjustment of the horizontal well. The horizontal well track is adjusted in real time by measuring stratigraphic layering and well deviation data during drilling, the drilling rate of a reservoir can be effectively increased, and an effective technical means can be provided for efficient development of deep oil and gas reservoirs.

The invention discloses a coal seam gas enhanced mining method based on methane in-situ burning explosion fracturing. A top plate horizontal well and a bottom plate horizontal well are drilled in a top plate and a bottom plate correspondingly; the sand-carrying fluid forms high-speed and high-pressure jet flow through a perforating device and impacts a bottom plate, holes are formed in the coal seam, and meanwhile a plurality of cracks are generated in the surfaces of the holes; a plurality of fishbone wells are drilled downwards in the horizontal well section of each roof horizontal well; fracturing operation is conducted on the holes through liquid CO2; coal ash and oxygen are injected into the horizontal well section of the bottom plate horizontal well together, and a mixture is formed; detonating the mixture, and generating impact on the coal seam by utilizing instantaneous high pressure generated by burning explosion, so that the crack continues to expand; performing underground methane burning and explosion operation for multiple times, and forming a highly-fractured impact crack network near the horizontal well section; meanwhile, part of coal is mixed with oxygen to be combusted, and a coal seam loosening ring with weak bearing capacity is formed near the bottom plate; closing the well for mineralization reaction; and gas extraction operation. According to the method, the gas extraction efficiency can be remarkably improved.

The embodiment of the invention relates to the technical field of petroleum machinery, and provides a pure sealing cavity integrated whipstock which comprises a whipstock body used for setting in a borehole, a sealing cavity, a sealing cavity and a sealing cavity. And the windowing milling cone is arranged on the whipstock and is provided with an inner cavity, the inner cavity is provided with a first communication port and a second communication port, and drilling fluid in the borehole can flow into the first communication port and is sent out from the second communication port, so that impurities in the drilling fluid in the borehole are taken away. Another embodiment of the invention provides a setting method which comprises the following steps: S1, drilling fluid reverse circulation: feeding drilling fluid carrying impurities at the to-be-set position of the borehole into the first communication port of the windowing milling cone, and feeding away the drilling fluid from the second communication port, so that the impurities at the to-be-set position are removed; and S2, drilling fluid positive circulation is conducted, specifically, drilling fluid is fed into a second communication port of the windowing milling cone and flows to the whipstock to enable the whipstock to be sealed. According to the technical scheme, the technical problem that the interior of the whipstock is prone to being polluted or blocked before the whipstock is set in the prior art is solved.

The invention belongs to the related technical field of ocean engineering, and discloses a horizontal ice drilling transmission mechanism based on a flexible shaft, which comprises a drill bit assembly, the flexible shaft, a sleeve joint chain, an upper end joint assembly, a lower end joint assembly and a guide pipe, the sleeve joint chain is formed by hinging a plurality of sleeve joints end to end through pin shafts and is accommodated in the guide pipe; a channel used for guiding and restraining the sleeve joint chain is arranged in the guide pipe. The flexible shaft is arranged in an inner cavity of the sleeve joint chain in a penetrating mode. The upper end of the flexible shaft is connected with an external rotation driving device through an upper end connector assembly. The upper end of the sleeve joint chain is connected with an external lifting driving device through an upper end connector assembly. The whole transmission mechanism is compact in structure and small in radial size, the space of a small-diameter vertical ice hole can be fully utilized, and large-depth drilling from the vertical direction to the horizontal direction is achieved; and a more stable and efficient drilling process can be realized, and the requirements of different ice layer hardness and drilling depth are met.

The invention relates to the technical field of sidewall contact force control, and discloses a well wall sidewall contact force control method, which comprises the following steps of: acquiring fluid pressure gradient data, synchronously acquiring contact stress distribution of a working surface, performing synchronous association, acquiring associated data of time-space alignment, and performing fusion processing to eliminate irregular fluctuation; a smoothed pressure and stress correlation data set is obtained; the local stress concentration state is detected in real time, and a control instruction used for adjusting the displacement of the contact execution mechanism is generated; constructing a nonlinear relation model between a pressure and stress associated data set and contact force output, embedding a dynamic compensation mechanism, correcting and fusing the input real-time data to generate a collaborative feedback quantity, and adjusting the displacement of the contact execution mechanism in real time through the collaborative feedback quantity. And the response delay in the adjustment process is compared with a preset time range, and parameters of the dynamic compensation mechanism are adjusted according to a comparison result to form closed-loop control. According to the invention, high-precision and high-robustness control of the sidewall pushing force can be realized.

The invention discloses a drill rod tension type vertical shaft tunneling process which comprises the following steps: constructing a pilot shaft into a stratum by utilizing a raise boring machine, constructing a starting shaft, sequentially hoisting a tunneling machine and a hanging scaffold system into the starting shaft by utilizing hoisting equipment, and driving a tension drill rod to sequentially penetrate through the hanging scaffold system and the tunneling machine by utilizing the raise boring machine, and the tunneling machine continues to be lowered into the lower horizontal roadway and is fixed through the drill rod tensioning device, the tunneling machine starts to conduct tunneling circulating operation downwards along the tension drill rod through the stepping mechanism, and the hanging scaffold system conducts well wall supporting circulating operation downwards along the tension drill rod through the stepping mechanism till the tunneling machine conducts tunneling to the lower horizontal roadway. The tension drill rod serves as a main fixing structure and can bear the weight of the heading machine, the rock breaking positive pressure and the weight of the hanging scaffold, and the heading effect is supported not to be affected and limited by the stratum; the tension drill rod provides guidance, and the tunneling machine is guided on a correct tunneling path in real time, so that the construction efficiency and the tunneling well completion quality are improved.

A method may include drilling a portion of a borehole with a bottomhole assembly (BHA) including the downhole tool in an automated drilling routine. A method may include receiving, at a control unit of the BHA, a disengagement downlink communication having a disengagement magnitude and disengagement duration. A method may include, based at least partially on the disengagement downlink communication, disengaging the automated drilling routine.

The invention relates to the technical field of engineering equipment, and discloses a guardrail breakdown van. Comprising a device body and a drilling rig mechanism, the top of the device body is provided with the drilling rig mechanism, one side of the drilling rig mechanism is provided with a crane, the top of the device body is fixedly connected with an oil-gas separator, and one side of the oil-gas separator is provided with a radiator. An original engine of an automobile is utilized, additional installation is not needed, normal walking of the automobile is guaranteed, energy is directly supplied to the drilling frame mechanism, the working efficiency is greatly improved, in the aspect of heat dissipation, the drilling frame mechanism adopts a double-rotation and double-transverse-movement mode, a base is flexible, and large-range transverse movement and 360-degree rotation can be achieved; the drilling mechanism and the piling mechanism are installed in an interchange mode, the turning step is reduced, the truck-mounted crane is telescopic and can hoist goods of 3 tons, the truck is stabilized during working, space is saved when the truck-mounted crane does not work, and convenience and high efficiency of first-aid repair operation are improved in an all-around mode.