1239results about "Directional drilling" patented technology

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%.

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 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 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.

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.

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 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.

Wellbore operations include rotating a drill string in a wellbore. The drill string includes a rotary steerable system having at least three pads configured to contact the wellbore wall to steer a direction of drilling. The pads are simultaneously actuated while rotating the drill string to mitigate high frequency torsional oscillations.

The invention provides a rotary drilling rig for building pile foundation hole forming, and relates to the technical field of rotary drilling rigs, the rotary drilling rig comprises a movable workbench and a rotary drilling barrel, a drill rod is fixedly mounted at the top of the rotary drilling barrel, a drill rod driver for driving the drill rod to rotate is arranged on the movable workbench, and an annular groove is formed in the inner wall of the rotary drilling barrel; three cavities are formed in the rotary excavating drill cylinder, the rotary excavating assembly is installed in the cavity in the lowermost layer of the rotary excavating drill cylinder, the reaming assembly is installed in the cavity in the uppermost layer of the rotary excavating drill cylinder, and the two driving assemblies are installed in the cavity in the middle layer of the rotary excavating drill cylinder and used for adjusting the rotary excavating assembly and the reaming assembly. By means of the technical scheme, when rotary excavating is conducted according to different geology or different reaming requirements, underground rotary head replacement is achieved by adjusting the rotary excavating assembly and the reaming assembly, the working efficiency is improved, and the rotary excavating efficiency is improved. And the rotary excavating stability is ensured through locking of the locking assembly.

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

The invention provides a drilling operation method adopting a pipe shed drilling machine, and belongs to the technical field of drilling operation of drilling machines. Initial positioning deviation is controlled through three-dimensional positioning calibration of a guide pipe and a space stabilization structure, drilling track deviation correction is achieved through real-time monitoring of a hole inclination angle and an eccentric drilling tool; the method comprises the following steps: dynamically adjusting drilling parameters according to a geological radar detection lithology type, establishing a slurry seepage diffusion fluid-solid coupling model to calculate a slurry diffusion radius and a filling rate, establishing a double-layer game optimization model to solve a Nash equilibrium point of grouting pressure and a slurry water-cement ratio, and adopting double-slurry pre-plugging combined with superfine cement reinforcement for a fracture zone. A drill rod and stratum interaction finite element model is established to recognize the dangerous section position, and a stabilizer or a thickened drill rod is additionally arranged, so that the technical problem that grouting reinforcement parameters and drilling track control precision are difficult to optimize synchronously in the pipe shed drilling process is solved.

The invention discloses a tunnel plateau complex geology accurate exploration method based on ultra-deep horizontal drilling, which comprises the following steps: step (1) horizontal drilling layout: selecting a construction site on the ground of a to-be-tunneled tunnel, and planning a horizontal drilling track along a tunnel line; (2) horizontal drilling and multi-dimensional geological exploration are constructed, specifically, according to the planned horizontal drilling track, a petroleum drilling machine is used for constructing horizontal drilling; logging operation is carried out in the horizontal drilling construction process, and comprehensive logging and transient electromagnetic detection are carried out after horizontal drilling construction is completed; and step (3), integration and analysis of geological exploration data information: integrating and analyzing the data information collected by multi-dimensional geological exploration, determining geological conditions along the tunnel line, and identifying geological abnormal sections. According to the invention, the problems of discontinuous exploration and poor accuracy of traditional vertical drilling and geophysical prospecting means can be solved, and high-precision and continuous exploration of geological conditions near the tunnel line is realized.

This invention relates to a drill string (32) for use with micro tunnelling apparatus (1) having a cutter (21) at a distal end of the drill string (32) and external drive mechanism (2) at a proximal end of the drill string (32). The drill string (32) being formed by a plurality of connected string segments (13), each string segment (13) with a drive shaft (33) aligned along the central axis for rotation there about and an elongate casing (34) that houses the drive shaft (33). The front end of one string segment (13) is adapted to connect with the back end of another string segment (13) to form the drill string (32) by way of a latch connection, the latch connection being adjustable so as to vary the tolerance between said front end of one string segment (13) and said back end of another string segment (13) while connected.

The invention discloses a drilling machine guiding and drilling optimization method and system based on real-time geological model self-adaptive updating. The method comprises the steps that underground multi-dimensional data are sensed in real time through an underground intelligent sensing and regulation subsystem; using the physical information neural network model to update the digital twinborn body in the drilling process in real time; prospectively optimizing a drilling strategy in the updated digital twinborn body to obtain an optimal drilling control parameter combination; and finally, cooperatively controlling the ground drilling equipment and the underground drilling tool to execute the optimization instruction in a closed loop manner. The system correspondingly comprises an underground intelligent sensing and regulation subsystem, a ground digital twinning and optimization decision subsystem and a ground drilling machine automatic control execution subsystem. According to the method, the influence caused by geological uncertainty can be overcome, passive well drilling response is changed into active predictive control, and the efficiency, safety and economical efficiency of well drilling operation are effectively improved.

This invention relates to a reamer assembly (6) for enlarging a substantially horizontal pilot hole (14) in the ground to produce a bore hole (18), including a cutter (21) which is rotatable about an axis X-X. A gear box (20) is positioned on a first side of the cutter (21) for interacting with a drive shaft (33) which is rotated about the axis X-X by a drive apparatus (2) outside the pilot bore hole (14) and a body (15) positioned on a second side of the cutter (21) for transferring thrust from a thrust apparatus (4) outside of the enlarged bore hole (18) to the cutter (21).

The utility model relates to a mining angle-adjustable deep hole drilling machine. The mining angle-adjustable deep hole drilling machine comprises a crawler, a hydraulic arm, a connecting seat, a supporting frame, a driving mechanism, a lifting block, a drill rod, a drilling motor, a drill bit and a guide frame. A hydraulic arm is installed on the crawler, a connecting base is arranged at the end of the hydraulic arm and can be adjusted in the left-right direction under the action of a hydraulic rod, and a supporting frame is rotatably installed on the left side and can achieve angle adjustment in the front-back direction through a driving mechanism. The lifting block ascends and descends along the supporting frame under constraint of the guide frame, the lower side of the lifting block is connected with the drill rod and the drill bit, and the drilling motor drives the drill rod and the drill bit to rotate to complete drilling operation. According to the structure, multi-direction automatic leveling and precise drilling of the drilling machine under the uneven terrain are achieved, the adaptability, precision and safety of drilling operation are improved, and the drilling machine is suitable for deep hole drilling operation under complex working conditions such as mines.

Wellbore operations include rotating a drill string in a wellbore. The drill string includes a rotary steerable system having at least three pads configured to contact the wellbore wall to steer a direction of drilling. These are simultaneously actuated while rotating the drill string to mitigate stick slip, harmonic stick slip, or backward whirl oscillations.

A method for passively producing hydrogen from a geological formation includes drilling a plurality of lateral wellbores into an iron-rich geological formation from a mother wellbore extending from a surface location. Each of the plurality of lateral wellbores has an inclination along its length of less than 90 degrees. A biocide configured to inactivate hydrogen-consuming microbes is placed into the plurality of lateral wellbores and thereby into formation water that is flowed from the geological formation into the plurality of wellbores. Hydrogen gas effervesced from the formation water in the plurality of lateral wellbores is collected via the mother wellbore. The hydrogen gas is generated at least in part from a water reduction reaction of minerals of the geological formation with the formation water and risen through the plurality of lateral wellbores passively by buoyancy effects without pumping.

A perforating gun includes a gun assembly and a gun barrel. The gun assembly includes a charge tube comprising at least one shaped charge. A pin contact assembly is operably attached to a first end of the charge tube and includes a contact spacer and a through pin configured to provide electrical communication between respective perforating guns. An addressable switch assembly is attached to a second end of the charge tube and comprises an addressable switch and a detonator. The gun assembly is situated within the gun barrel and is configured to self-orient inside the gun barrel.

The utility model belongs to the field of mining drilling machines, and relates to an asynchronous rotating device for adjusting the inclination angle of a drilling machine, which comprises a lifting sleeve serving as a carrier of the asynchronous rotating device; the lifting oil cylinder is used for installing the lifting sleeve on a rotary platform of the drilling machine in a vertical lifting manner; the transporter gyrator is mounted on the lifting sleeve and is configured to adjust the inclination angle of the drill rod transporter; the dip angle gyrator is installed on the lifting sleeve, the dip angle gyrator and the transporter gyrator are located on the same side of the lifting sleeve, and the dip angle gyrator is configured to adjust the dip angle of the rack; wherein the transporter gyrator and the dip angle gyrator can be operated independently so as to adjust the dip angle of the drill rod transporter and the dip angle of the rack respectively. The asynchronous rotating device is introduced, so that the inclination angles of the drill rod transporter and the rack can be independently adjusted. Therefore, the drilling inclination angle range can be expanded to the whole circumference, the flexibility of the drilling machine is greatly improved, and more complex drilling requirements are met.

The invention discloses an ultra-short radius directional horizontal well windowing sidetrack drill and a drilling construction method thereof, and relates to the field of drilling construction. According to the ultra-short radius directional horizontal well windowing sidetrack drill and the drilling construction method thereof, a titanium alloy drill rod and a flexible drill rod are connected, a flexible universal joint is arranged between the titanium alloy drill rod and the flexible drill rod, a non-magnetic flexible drill rod is connected with the flexible drill rod, a flexible screw motor is connected with the non-magnetic flexible drill rod, and a centralizer is connected with the flexible screw motor. According to the well drilling construction method, horizontal well drilling is carried out after the bottom of a lateral window is drilled through a drill bit along a whipstock, a new operation instruction is transmitted into an MWD wireless orientator while drilling in a flexible screw motor through a drill bit track adjusting system, and the drill bit is controlled through a bent connector to change the moving track. According to the method, in the horizontal drilling process, the moving track of the drill bit can be changed according to the requirements of customers.

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.

The utility model provides blasting drilling equipment with a dust falling function, which relates to the technical field of drilling equipment and comprises a base, a driving mechanism is mounted at the top end of the base close to the left side, and a dust falling component is mounted at the top end of the base and positioned on the back of the driving mechanism. A water tank is installed at the corner, close to the right side and the back side, of the top end of the base, a control box is installed at the top end of the base and located on the front face of the water tank, the driving mechanism comprises a fixing base, a driving assembly is installed in the fixing base, a fixing block is installed at the top end of the fixing base, and a first motor is installed at the top end of the fixing block; water in the water tank is pumped out through the water pump and conveyed to the interior of the annular pipeline through the hose, surrounding type water spraying dust falling is conducted on the drill bit and the drill hole through the first spray head and the second spray head, and compared with a traditional dust falling mode, manpower consumption is greatly reduced, and practicability is effectively improved.