1096results about "Borehole drives" patented technology

This invention relates a drill head (4) for use with a microtunneling apparatus (1) having a cutter bar (12) that is rotatable to produce swarf in a working zone. The drill head (4) includes a movable imaging device (46) that is adapted to capture images in the working zone (13). The imaging device (46) is adapted to move from a position within an annular shell (11) to a position external from the annular shell (11).

A milling bit valve is disclosed for improved debris collection within a wellbore. The check valve can be part of a debris removal tool that includes a motor, pump, gearbox, bailer, milling bit, check valve, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On its downhole end, the milling bit can be configured for debris removal with cutting edges. The downhole end can also include openings that provide access to an internal cavity of the milling bit. The internal cavity can extend the entire length of the milling bit. This allows the pump to pull drilling fluid into the bailers through the milling bit and check valve. As a result, the debris removal tool can simultaneously remove obstructions in a wellbore and collect debris from the obstruction removal.

Shown and described herein is a choke assembly for use with a downhole drill string. The choke assembly may include a rotating choke carrier, a stationary seat disposed on the rotating choke carrier and a rotating choke positioned adjacent to the stationary seat to create a seal surface. The choke assembly may further comprise a biasing mechanism applying a biasing force to press the rotating choke against the stationary seat and a flow port within the stationary seat which controls drilling fluid to allow some drilling fluid to become a bypass fluid and pass through the stationary seat.

The invention discloses a directional deflecting wire-line coring drilling device and a directional deflecting wire-line coring drilling method, relates to the field of drilling of soil layers or rocks, and solves the problems that an existing drilling device is high in deflecting direction control difficulty and small in deflecting amplitude. According to the technical scheme, the directional deflecting wire-line coring drilling device comprises a deflecting short section, a top short section and a bottom short section, the top short section and the bottom short section are arranged at the upper end and the lower end of the deflecting short section, a drill rod connector is arranged at the upper end of the top short section, and the lower end of the bottom short section is connected with a hollow motor. A cylindrical coring cavity is formed in the top short section, the deflecting short section, the bottom short section, the hollow motor and the drill bit; the top short section and the deflecting short section, every two adjacent deflecting short sections and the deflecting short section and the bottom short section are connected through deflecting connecting structures, two pull rope holes are formed between the top short section and the upper end face and the lower end face of each deflecting short section, pull ropes penetrate through the pull rope holes, and the postures of the deflecting connecting structures can be adjusted through the pull ropes. And linear drilling and directional drilling are realized.

Apparatus and methods relate to a gear reducer, which may be used downhole to reduce rotational speed output from a downhole motor, such as a turbine motor, to a slower speed desired for rotation of a drill bit. The gear reducer includes a planetary gear arrangement coupled to receive rotational input from the downhole motor and a cycloidal gear arrangement driven by rotation resulting from the planetary gear arrangement. An output shaft couples to the cycloidal gear arrangement and rotates during operation slower than the rotational input from the downhole motor.

The invention provides a reverse-circulation large-diameter binding type down-hole hammer reamer bit and a slag discharging method. The reverse-circulation large-diameter binding type down-hole hammer reamer bit specifically comprises a drill bit shroud, an air distribution chamber, a central pipe combination, a down-hole sub hammer and a slag suction opening, wherein the slag suction opening is formed in the bottom of a central pipe and used for sucking crushed rock slag into a drill rod through negative pressure so as to discharge the rock slag. For bedrock large-diameter water-containing stratum reaming drilling, the unique slag suction opening is formed in the bottom of the center pipe, tail gas of the down-the-hole hammer forms entrainment airflow to push liquid in a drill hole to return to the ground surface from the slag suction opening, and the stable continuous reverse circulation slag discharging effect is achieved by means of gas lift water level rising of tail gas pressure of the down-the-hole hammer; and the drilling efficiency of the large-diameter binding type down-the-hole hammer is improved, and the stable and continuous deslagging effect is extremely good in construction application.

The invention provides a rotary impact type ultrasonic sampling device for deep rocks, which relates to the technical field of drilling and coring and comprises an anchoring unit, a feeding unit, a rotary unit, an impact unit and a coring unit which are sequentially connected from top to bottom. The device has the beneficial effects that the sampling device is firstly placed in a rock hole, and each anchoring tooth is fixed in the rock hole; then an ultrasonic transducer of the impacting unit and a motor of the rotating unit drive a drilling barrel to rotationally impact the rock, an electromagnet of the feeding unit drives a hydraulic cylinder to push the drilling barrel to drill downwards, the rock core enters the drilling barrel, and after the rock core in the drilling barrel reaches the needed length, the rock core pushes a push plate to move upwards to drive the lower end of a limiting rod to release a sliding block; the sliding block drives the core cutting rope to contract inwards to be in attached contact with a rock core, the core cutting rope cuts off the lower end of the rock core along with rotation of the drilling barrel, and therefore automatic drilling and coring can be achieved, coring operation is completed, the integrity of a rock core sample is guaranteed, and the core cutting device is particularly suitable for coring of deep hard rock.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an underground non-circular gear intelligent impact tool which comprises a power module, an axial impact module and a circumferential impact module, the power module enables drilling fluid to impact a turbine in a directional mode through a drainage disc, hydraulic energy is converted into mechanical energy, and the mechanical energy is transmitted to the axial impact module. The power is transmitted to the axial impact module and the circumferential impact module, the axial impact module lifts a rack punch hammer to compress a spring through meshing of an incomplete gear and the rack punch hammer, and when the incomplete gear is disengaged from the rack punch hammer, the spring releases energy to generate axial impact downwards. The circumferential impact module is composed of two groups of incomplete gears and racks which are arranged in an up-down 90-degree staggered mode, the rack punch hammer compresses a spring through meshing of the incomplete gears and the rack punch hammer, and the spring is released to generate circumferential impact when the incomplete gears and the rack punch hammer are disengaged. Periodic impact can be achieved, the mechanical rock breaking efficiency is effectively improved, and the stick-slip phenomenon at the drill bit is reduced.

The invention provides a hydraulic control and hydraulic drive coiled tubing tractor. The problems that an existing tractor is complex in structure and low in control stability are solved. The first piston cylinder, the second piston cylinder and the third piston cylinder are sequentially arranged on the center pipe in the length direction of the center pipe. Connecting rod supporting mechanisms are arranged at the ends, away from the second piston cylinder, of the first piston cylinder and the third piston cylinder, and the first piston cylinder and the third piston cylinder are used for controlling the two connecting rod supporting mechanisms to be folded and unfolded alternately; the first piston cylinder and the second piston cylinder are installed on the center pipe, the third piston cylinder is installed on a piston rod of the second piston cylinder, a hydraulic control driving assembly used for controlling the first piston cylinder, the second piston cylinder and the third piston cylinder to move is installed on the outer wall of the center pipe, and a drilling fluid inlet is formed in the side wall of the center pipe and communicated with the liquid inlet end of the hydraulic control driving assembly. The single telescopic hydraulic cylinder is adopted, the traction period is shortened, the traction speed is increased, meanwhile, only the pressure of drilling fluid needs to be controlled in the traction process of the tractor, and the system operation stability is high.

The invention belongs to the field of drilling, and particularly relates to a large-diameter cluster type pneumatic down-the-hole hammer raise-boring reamer bit and a drilling method.The bit comprises a center pipe, a cluster body, an air chamber, a down-the-hole hammer, a synchronous check valve, an air chamber pressure balance control assembly and a concave slag falling channel and is used for transmitting torque and rotating speed and conveying high-pressure air; the top of the central pipe is sleeved with a flange used for being connected with a drill rod, the central pipe is sequentially sleeved with a front guide wing plate, an upper fixing plate, a middle plate, a high-frequency rear seat, an air chamber peripheral cylinder and an air chamber lower cover plate in the extending direction of the central pipe, and the front guide wing plate, the upper fixing plate, the middle plate, the high-frequency rear seat, the air chamber lower cover plate and the central pipe jointly form a cluster body; two ends of the air chamber peripheral cylinder are respectively connected with the high-frequency rear seat and the air chamber lower cover plate to form an air chamber; according to the drill bit, the multiple down-the-hole hammers are integrated through the cluster body, efficient rock breaking and continuous slag discharging are achieved in combination with air chamber energy gathering, synchronous check valve control and a concave slag falling channel, and the drilling efficiency is improved by more than 10 times.

A downhole mud motor includes a driveshaft rotatably disposed in a driveshaft housing, a bearing mandrel coupled to the driveshaft, wherein the bend adjustment assembly includes a first configuration that provides a first deflection angle between the driveshaft housing and the bearing mandrel, wherein the bend adjustment assembly includes a second configuration that provides a second deflection angle between the driveshaft housing and the bearing mandrel, and a locking assembly including a locked configuration configured to lock the bend adjustment assembly into one of the first configuration and the second configuration until the downhole mud motor has at least one of reached a predefined depth in the wellbore, and a mud weight has reached a predefined mud weight threshold at a given depth, in response to which the locking assembly is configured to actuate from the locked configuration to an unlocked configuration.

Methods for identifying mud motor stall events are provided herein. One method includes receiving drilling sensor data including a pressure measurement signal, calculating a smoothed pressure signal, calculating a pressure fluctuation signal, determining a pressure fluctuation distribution dataset, and calculating a set of statistical values from the pressure fluctuation distribution dataset, where the set includes a pressure fluctuation value for a selected percentile value and probability distribution parameters that characterize a selected theoretical probability distribution function. The method also includes calculating a theoretical pressure fluctuation value for another selected percentile value using the probability distribution parameters, identifying mud motor stall event(s) when a pressure measurement value from the pressure fluctuation signal is greater than the calculated pressure fluctuation value and the calculated theoretical pressure fluctuation value multiplied by a prescribed numerical value, and utilizing the identified mud motor stall event(s) to manage the borehole drilling operation.

An electronically controlled full rotary clutch controller includes a drive assembly, an executive assembly and an auxiliary assembly. The device can have two working states: directional drilling and compound drilling. When compound drilling, drilling parameter information is obtained through the main control board, and the data is fed back to a ground processing system, which transmits a control signal to the main control board. The main control board controls a rotating motor, and pushes a screw sleeve and a push block shaft on a ball screw. The push block shaft pushes a push block radially, and a mandrel shell transmits torque to a roller shell through the push block. The roller shell and the mandrel shell rotate together to realize compound drilling. When directional drilling, the main control board reverses the rotary motor, the push block shaft pulls the push block radially, and the roller shell does not rotate.

The invention belongs to the technical field of slope construction, and particularly relates to a down-the-hole drill and a vertical blast hole blasting high and steep slope construction method. The method comprises the following steps: S1, firstly designing and arranging holes, firstly determining a blasting area, then determining a chassis resistance line, then determining the row pitch of the holes, and calculating the drill hole spacing and the row pitch according to the drill hole diameter and the blast hole density coefficient; s7, carrying out quality acceptance; when a drilling machine is used for drilling vertical deep holes with different depths, a slope surface is subjected to blasting and layered excavation to a slope bottom line, vertical downward excavation is firstly performed to a slope toe, then the slope is brushed to the slope toe along a slope top line, a breaking hammer is used for trimming a local under-excavation part, and finally a permanent slope is formed. The slope engineering standardization work of a project is greatly improved, the over-excavation and under-excavation phenomena are reduced, and powerful support is provided for permanent slope formation.

The invention relates to a composite percussion drilling speed increasing tool, and belongs to the technical field of drilling tools. The reciprocating hammering unit comprises a hammer body and an impact hammer, the hammer body is axially and slidably connected into the sleeve, the impact hammer is rotatably connected into the hammer body, a reversing sleeve is rotatably connected into the impact hammer, a reversing cabin is arranged on the reversing sleeve, and a reversing runner hole is formed in the hammer body; the flow channel switch unit comprises a baffle ring arranged on the surface of the hammer body and a transmission mechanism connected between the sleeve and the baffle ring, and the transmission mechanism is used for converting axial motion of the baffle ring into rotary motion so as to open or close the reversing flow channel hole. When the drilling tool is lifted, the axial movement of the baffle ring can be converted into rotary movement, so that the baffle ring rotates relative to the hammer body while axially displacing along with the hammer body, a reversing flow channel hole is shielded, and high-pressure drilling fluid cannot flow into a reversing cabin, so that high-frequency composite impact is stopped, vibration and abrasion caused by idling are avoided, and the service life of the drilling tool is prolonged. And the service life and the safety of the tool are improved.

A mechanical service tool that may include one or more anchors, a cutter, a communication and control system, and one or more sensors, as well as methods for operating the mechanical service tool, are provided. The one or more anchors may extend radially from the mechanical service tool and the cutter may move relative to the mechanical service tool. The cutter may include a drilling bit. The communication and control system may obtain remote commands that control the cutter, the one or more anchors, or both. The one or more sensors may detect operational conditions of the mechanical service tool and may be operatively coupled to the communication and control system.

The invention relates to a multi-stage universal variable-lead all-metal screw motor which comprises a first-stage screw motor, a second-stage screw motor and a third-stage screw motor, a bearing joint is installed at the output end of the first-stage screw motor, and a drill bit is installed on the bearing joint; the first-stage screw motor, the second-stage screw motor and the third-stage screw motor are sequentially arranged in the direction away from the drill bit. Each of the first-stage screw motor, the second-stage screw motor and the third-stage screw motor comprises a stator and a rotor matched with the stator, and the screw pitches and the leads of the rotors corresponding to the first-stage screw motor, the second-stage screw motor and the third-stage screw motor are gradually reduced; a universal connecting joint for connecting the first-stage screw motor with the second-stage screw motor is arranged between the first-stage screw motor and the second-stage screw motor, and a universal connecting joint is also arranged between the second-stage screw motor and the third-stage screw motor; each universal connecting joint is further provided with a deviation rectifying assembly, and the deviation rectifying assemblies can adjust the angle of the first-stage screw motor and the angle of the second-stage screw motor. The driving device has the effect of better driving the drill bit to work.

The present invention discloses a fully hydraulic power head drill suitable for drilling in loose and broken strata. It includes a chassis assembly, a centering gripper, a pipe ramming machine, a power head, a drill rig guide rail, a fixed pulley block, a support oil cylinder and a feed oil cylinder; the power head is fixedly connected to the feed oil cylinder and is slidably connected to the drill rig guide rail; the drill rig guide rail is installed on the chassis assembly; the fixed pulley block is fixed at the top of the drill rig guide rail to change the direction of the wire rope and form a traction mechanism in cooperation with the winch on the drill rig, and when necessary, pull the power head and the drill pipe string to the starting position; the support oil cylinder and the feed oil cylinder are hinged and fixed on the chassis assembly. The present invention has the advantages of realizing the rotary feed function of an ordinary core drill while realizing impact rotary compound drilling and improving the working efficiency of pipe ramming drilling.

The present invention relates to a wireline intervention tool string (1) for operating in a well (2) having a longitudinal axis, a top (51) and a bottom (52), comprising a tool housing (3) having a longitudinal tool axis, a first part connected to a wireline and configured to face the top of the well, the first part comprising an anchoring section (6) and configured to be rotationally stationary during operation, an operational tool (7) configured to rotate relative to the first part during operation, a driving unit (8) arranged in the first part and configured to provide rotational force to the operational tool, the driving unit being powered via the wireline, and a vibration-generating unit (9) for providing vibration force to the operational tool, wherein the wireline intervention tool string further comprises a vibration-dampening unit (10) arranged in a longitudinal position uphole relative to the operational tool for preventing vibrations generated by the vibration-generating unit from releasing tool sections from other tool sections of the wireline intervention tool string, at least in the first part. The invention also relates to downhole tool system comprising the wireline intervention tool string and a driving section / downhole tractor (15).

A milling bit is disclosed for debris collection within a wellbore. A check valve can be part of a debris removal tool that includes a motor, a pump, a gearbox, a bailer, the milling bit, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On its downhole end, the milling bit can be configured for debris removal with cutting edges. The downhole end can also include openings that provide access to an internal cavity of the milling bit. The internal cavity can extend the entire length of the milling bit. This allows the pump to pull drilling fluid into the bailers through the milling bit and check valve. As a result, the debris removal tool can simultaneously remove obstructions in a wellbore and collect debris from the obstruction removal.

The invention relates to a mortar anchor rod construction device and a mortar anchor rod construction method. The construction device comprises a drill rod, an impactor and a drill bit which are sequentially connected, and is further provided with a wall protection sleeve, the rear end of the drill rod is connected with an output shaft of the rotary driving device, the wall protection sleeve is arranged on the outer side of the drill rod in a sleeving mode, a rotary fit clearance is reserved between the wall protection sleeve and the drill rod, the rear end of the wall protection sleeve is connected with an output shaft flange of the rotary driving device, and an annular drill bit structure is arranged at the front end of the wall protection sleeve. The construction device is used for drilling an anchor rod hole, after drilling is completed, the protection casing pipe is disconnected from the driving shaft of the rotary driving device, the mortar anchor rod construction device is returned, and the protection casing pipe is reserved in the anchor rod hole in situ. The device is suitable for occasions where surface layer covering soil is thick or loose, hole collapse can be effectively avoided, and the working efficiency can be improved.

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 present application provides a pneumatic buffering and stabilizing drilling device, which relates to the field of drilling technology. The device includes a sleeve and a transmission shaft, one end of the sleeve is used to connect to a drill rod; the first end of the transmission shaft is used to connect to a drill bit, the second end of the transmission shaft is inserted into a receiving cavity of the sleeve, and an air storage space is provided between the transmission shaft and the sleeve; a limiting portion is provided on the inner wall of the receiving cavity, and a limiting member is provided on the transmission shaft, and the limiting portion and the limiting member are used to limit the engagement when the air storage space is filled with gas; during drilling, the drill rod drives the sleeve to slide relative to the transmission shaft in a first direction to compress the inert gas in the air storage space, so that the transmission shaft continuously pushes the drill bit. With this arrangement, during drilling, the drill bit can be continuously pushed by gas pressure, thereby improving the matching degree between drilling speed and cutting efficiency, and preventing excessive gas from being filled into the air storage space, ensuring that the air pressure meets the requirements, and ensuring a dynamic balance between efficient cutting and rock wall reaction force.

The invention relates to the technical field of petroleum and natural gas drilling, in particular to a bottom drilling tool assembly for deviation prevention and straightening of hard formation composite drilling, which comprises a drill collar, a first stabilizer, a short drill collar, a single bent screw, a torsion impactor and a drill bit which are sequentially connected together from right to left, and a second stabilizer is arranged on the outer side of the single-bending screw rod corresponding to the position between the bending point and the torsion impactor. The device is reasonable and compact in structure, and the distance between the first stabilizer and the second stabilizer or the distance between the second stabilizer and a drill bit can be adjusted according to different stratigraphic dip angles so as to determine proper drilling tool combination parameters; the sizes of various drilling tools on a drilling site are difficult to change, the deviation prevention capacity of the bottom drilling tool combination is controlled by adjusting the length of the short drill collar, the phenomenon that adjustment is difficult due to the fact that the sizes of the various drilling tools on the drilling site are difficult to change can be avoided, and the stick-slip vibration phenomenon of drilling a hard stratum can be avoided through the torsion impactor.

The invention discloses a large-diameter down-hole hammer ring seal packer and a reverse circulation forming device and method, solves the problems that a sealing device in a reverse circulation forming device in the prior art is prone to leakage and not easy to replace, and has the beneficial effects of being not prone to leakage and high in structural stability. Comprising an inner pipe and an outer pipe, the inner pipe is inserted into the outer pipe, the inner pipe and the outer pipe are arranged at intervals, one end of the inner pipe and one end of the outer pipe can be connected with a double-wall drill rod, the outer pipe is annularly sleeved with an inflation inner sleeve, a plurality of through holes are annularly formed in the inflation inner sleeve, and an inflatable air bag is arranged on the outer side face of the inflation inner sleeve; the air outlet is communicated with the through hole of the inner inflation sleeve, one end of the inner inflation sleeve is limited by the outer pipe, the two ends of the inflatable air bag are fastened by the inner inflation sleeve and the annular component, and the annular component is detachable relative to the outer pipe so that the inflatable air bag can be replaced conveniently.

The invention discloses directional drilling grouting plugging equipment which comprises a drilling system, a grouting system and a control system, the drilling system comprises a drill bit, a hydraulic driving structure, a bearing, a spiral winch and a drilling disc, the drilling disc is installed at the bottom of the drill bit through the bearing, and the hydraulic driving structure is installed in the drill bit; the hydraulic driving structure comprises a main body part, a gear transmission assembly, a first connecting shaft, a second connecting shaft, an oil inlet valve and an oil outlet valve, the main body part is installed in the drill bit, the gear transmission assembly is installed in the main body part, one end of the first connecting shaft and one end of the second connecting shaft are connected with the gear transmission assembly, and the other end of the first connecting shaft is connected with the drill disc; the other end of the second connecting shaft is connected with the spiral winch, the spiral winch is installed on the drill bit through a bearing, one end of the grouting system penetrates through the drill bit and is exposed out of the bottom of the drill bit, and the control system is electrically connected with the hydraulic driving structure and the grouting system. The drilling direction of the drilling operation is more convenient to control, the equipment maintenance cost is reduced, and the operation efficiency is improved.

A mechanical service tool that may include one or more anchors, a cutter, a communication and control system, and one or more sensors, as well as methods for operating the mechanical service tool, are provided. The one or more anchors may extend radially from the mechanical service tool and the cutter may move relative to the mechanical service tool. The cutter may include a drilling bit. The communication and control system may obtain remote commands that control the cutter, the one or more anchors, or both. The one or more sensors may detect operational conditions of the mechanical service tool and may be operatively coupled to the communication and control system.

A trenchless in-situ pipe replacement construction device includes a pulling mechanism and a crushing mechanism. The pulling mechanism is used to pull the new pipe through the old pipe. The pulling mechanism includes a directional drill, a directional drill rod, and a traction rod. The ends of the traction rod are detachably connected to the new pipe and the directional drill rod, respectively. The crushing mechanism is used to crush the old pipe as the new pipe passes through it. The crushing mechanism includes a pneumatic hammer, a motor, and a rotating drum. The pneumatic hammer is mounted on the traction rod. The rotating drum rotates and is mounted on the outside of the new pipe. The motor is used to drive the rotating drum and is located inside the new pipe. While the pneumatic hammer crushes the old pipe and the pulling mechanism pulls the new pipe forward, the motor drives the rotating drum outside the new pipe to rotate. The rotating drum can squeeze the soil around the pipe and obstacles such as broken pipes, preventing damage to the outer wall of the new pipe caused by obstacles. It also prevents damage to the inner wall of the new pipe caused by obstacles falling into the new pipe after falling off.

The invention discloses a coal rock drilling operation state while-drilling monitoring system and method. The system is characterized in that a pressure and flow sensor I is mounted on a circulating hydraulic pipeline of a feeding oil cylinder; a pressure and flow sensor II is mounted on a circulating hydraulic pipeline of the hydraulic rotary motor; a displacement sensor is mounted on the feeding oil cylinder; the video collector is mounted above a coal wall of a construction roadway; the data acquisition and processing module is connected with each sensor; the video analysis module is connected with the video collector; the state determination module is connected with the data acquisition and processing module and the video analysis module. The method comprises the following steps: acquiring a multi-source drilling state signal and working image data; preprocessing the data; respectively acquiring state classification feature information and drill rod operation state image data, and inputting the state classification feature information and the drill rod operation state image data into a double-flow neural network to extract feature vectors; vector splicing is carried out through a Softmax gating fusion mechanism, and then a judgment result is output through a Softmax classifier. According to the method, the running state of the coal rock drilling can be efficiently and accurately judged.