88results about "Thermal drilling" patented technology

Systems and methods disclosed herein may comprise a bottom hole assembly; and a cable disposed in the wellbore. In examples, the cable may comprise a superconducting material configured to provide at least power to the bottom hole assembly; one or more liquid supply channels configured to supply a fluid to reduce temperature of the superconducting material; and one or more liquid return channels. Further, cryogenic liquid may be pumped through the liquid supply channels.

An electro-crushing drill bit is to drill a wellbore, wherein the electro-crushing drill bit comprises a bit body; a ground structure coupled to the bit body; and at least one electrode coupled to a power source and the bit body, the at least one electrode positioned within the ground structure, wherein the at least one electrode comprises, a fixed plate; and a movable plate that is movable relative to the fixed plate.

This invention discloses a novel combined microwave-drilling device for hard rock, belonging to the field of rock breaking technology. It includes a ground control system and a microwave generator. One end of the ground control system is connected to the microwave generator; a power box is connected to the bottom of the microwave generator, and a rock-breaking motor is installed inside the power box. The drilling tool of this invention consists of a pre-drilling small drill bit and a reaming large drill bit. The pre-drilling small drill bit acts as a pilot tool, drilling a guide hole on the rock surface through high-speed rotation. Simultaneously, it utilizes the local high stress concentration effect of its cutting edge to pre-damage the rock mass surrounding the hole wall, forming a micro-crack network, significantly reducing the integrity and strength of the rock mass. The reaming large drill bit efficiently enlarges the drilling cross-section of the weakened rock mass. Through the synergistic effect of mechanical fracturing and microwave thermal assistance, the drilling cross-section is rapidly enlarged, while reducing energy loss and tool wear during pure mechanical drilling.

A wellbore is drilled in a subterranean zone with a drill bit of a drilling string. The drilling string includes tubing and a fluid separator uphole of the drill bit. While drilling, a drilling fluid is flowed through an interior of the drilling string and through the fluid separator. The fluid separator separates, from the drilling fluid, a fluid stream having a higher water-to-oil ratio than a remainder of the drilling fluid Uphole of the drill bit, the fluid stream is diverted from the fluid separator to an annulus around the exterior of the drilling string based on a specified temperature of a drilling string component while the remainder of the drilling fluid flows from the fluid separator to the drill bit.

An optical energy system includes a laser device (110) configured to output a laser beam (125); an array (125) of a plurality of sensors (102) radially positioned apart from a path of the laser beam, where each of the plurality of sensors is configured to capture energy scattered from a transversal energy (120) distribution of the laser beam and output an electric current at a value (206) in proportion to the captured energy; and a control system (400) communicably coupled to each of the sensors. The controller is configured to perform operations including aggregating the output electric currents from the plurality of sensors into a time-dependent array of electric current values; determining an anomaly in the laser beam based on at least one of (i) a shape of the laser beam, or (ii) digitized output electric current data from the electric current values; and controlling the laser device based on the determined anomaly in the laser beam.

The present disclosure relates to a rock drilling arrangement, a rock drilling rig and a method The rock drilling arrangement comprises a drill string extending along a central axis and a drill head comprising at least two electrodes located at a lower end of said drill string. The drill head is configured to be applied to a mineral substrate and form a drilled hole in the mineral substrate by passing a high voltage current pulse between the at least two electrodes via the mineral substrate. The rock drilling arrangement further comprises a cylindrical casing encompassing the drill head and encompassing at least a lower poron of the drill string extending along the central axis to the drill head. The rock drilling arrangement also includes a fluid transfer arrangement comprising a fluid supply conduit to supply a liquid fluid to an applicaon area of the drill head. The cylindrical casing has a posion aligned to the posion of the drill head and is configured to be adjacent to the mineral substrate during drilling.

A laser tool apparatus includes a tool body, an optical fiber cable disposed in the tool body, the optical fiber cable including a laser head that emits a laser beam, a shaping optic coaxially disposed downstream of the optical fiber cable, the shaping optic shaping the laser beam emitted from the laser head, and a flexible cable attached to the shaping optic. The flexible cable flexibly directs the laser beam to a desired angle within a borehole.

A pulsed power drilling system for breaking a mineral substrate and to a method for breaking a mineral substrate by passing a pulsed electrical current through the mineral substrate via at least one fluid volume that is at least partly ionized by use of microwave radiation. The disclosed pulsed power drilling system and method use microwave radiation for at least partly ionizing a fluid volume extending between an electrode and the surface of the mineral substrate and. The disclosed pulsed power drilling system and method may for example be applied in rock drilling, concrete processing, mineral processing, and continuous mining. The present disclosure further relates to a drill rig comprising a pulsed power drilling system and the use of a pulsed power drilling system.

The invention discloses a laser-drilling tool collaborative rock breaking drilling system under high-temperature and high-stress conditions, which comprises an integrated control box, a control panel mounted on the outer wall of one side of the integrated control box and a hollow column vertically arranged on one side of the integrated control box, and an integrated data wire is mounted on the outer wall of one side of the integrated control box; the integrated control box is used for sending a cooperative control instruction to all other modules, the control panel is used for providing a man-machine interaction interface to display the system state and receive an input instruction of an operator, and the hollow column serves as a main body bearing structure and an internal channel of the system. The cooling protection module is used for providing a cooling channel for the laser emission module and the drilling tool module in the working state, so that waste heat generated by a heating part is collected and guided out, and the defects that heat dissipation points are large in number and low in cooling efficiency are overcome.

Drilling in a wellbore in a subterranean zone with a drilling string including a coiled tubing. The coiled tubing having a bulk, length normalized radial thermal resistance to heat transfer through a wall of the tubing of at least 0.008 m K / W. Flowing a drilling fluid through the drilling string while drilling, where a ratio of a drilling string bulk density to a drilling fluid bulk density is 2 or less.

An electro-crushing drill bit is to drill a wellbore, wherein the electro-crushing drill bit comprises a bit body; a ground structure coupled to the bit body; and at least one electrode coupled to a power source and the bit body, the at least one electrode positioned within the ground structure, wherein the at least one electrode comprises, a fixed plate; and a movable plate that is movable relative to the fixed plate.

Some implementations include a system comprising at least one coiled tubing extending from a surface of a wellbore to a bottomhole assembly (BHA); a power cable to be housed either inside or outside the at least one coiled tubing and to electrically couple a power supply at the surface of the wellbore with the BHA. The BHA comprises at least one capacitor to store electrical power received from the power supply via the power cable housed in the at least one coiled tubing; and at least one electrode electrically coupled to the at least one capacitor to receive the stored electrical power from the at least one capacitor and to periodically emit pulsed power discharges into a subsurface formation to drill the wellbore based on the stored electrical power received from the at least one capacitor.

The application discloses a kind of laser-assisted drilling rock breaking intelligent control system and method, comprising: perception module, for obtaining the state information of each component of laser drill, tunneling parameter and drill drilling force;Decision module is used to determine whether the operation of laser drill is normal according to the state information of each component of laser drill, determine the surrounding rock grade under the current tunneling state according to tunneling parameter, and determine the drilling pressure difference between each drill tooth according to drill drilling force, and determine whether the drilling direction of drill is deviated by the drilling direction deviation occurrence threshold value;Execution module is used to determine whether to issue alarm and close laser drill according to the operation of laser drill determination result, select to start corresponding drilling mode according to surrounding rock grade, and adjust laser beam exit angle according to the drilling direction of drill determination result.Advantages: improve tunneling efficiency, ensure drilling stability and safety.

An electrocrushing drilling apparatus may include a downhole electrocrushing drill assembly that is part of a bottomhole assembly coupled to a downhole end of a coiled tubing drill string. The coiled tubing drill string can be deployed into a wellbore of a hydrocarbon well to advance the wellbore by way of an electrocrushing drilling operation whereby formation rock is fractured by high voltage electrical energy pulses emitted by electrodes of a drill bit of the electrocrushing drill assembly. Potential damage to electronic or other components of the bottomhole assembly due to excess heat generated by power losses of electrocrushing drill assembly can be minimized or prevented by actively cooling the electronic or other components of the bottomhole assembly using a liquid coolant that is conveyed from an earth surface of the well downhole to the bottomhole assembly and passed through the electronic or other components of the bottomhole assembly.

A drill head (1) and corresponding method for drilling a borehole (2) into a sub-surface formation (3) comprises at least one drill housing (4) configured to be arranged sub-surface, and at least one gyrotron (5, 5a, …). The gyrotron (5, 5a, …) comprises an electron gun (6) configured to produce an electron beam, at least one magnet (7) configured to produce a magnetic field, and a cavity (8) configured to receive the electron beam and to generate microwaves by a resonance coupling between the electron beam and the magnetic field produced by the magnet (7). The microwaves are injectable into the sub-surface formation (3) for drilling the borehole (2). The gyrotron (5, 5a, …) is at least partially arranged in the drill housing (4) such, that the microwaves are generated sub-surface.

This invention discloses a soft robot system and its working method for sampling polar ice layers, applied in the field of polar drilling technology. It includes a soft robot and an ice surface working platform. The soft robot comprises a sub-ice drilling soft body and an ice surface sealing soft body. The sub-ice drilling soft body includes a soft body main unit and a heat-fusion module located at the front end of the soft body main unit. The ice surface sealing soft body includes a soft body main unit. Both soft body main unit one and soft body main unit two are provided with hollow channels, and several air chambers are provided inside soft body main unit one on both sides of the hollow channels. The ice surface working platform includes a pneumatic system, a pipeline system, a water storage system, and a main controller. The main controller is electrically connected to the pneumatic system, the pneumatic system pipelines are connected to the pipeline system, and the pipeline system pipelines are connected to the water storage system and the air chambers. The pipeline system passes through the hollow channels and connects soft body main unit one and soft body main unit two in series. This invention meets the existing requirements of unmanned drilling, flexible selection of sampling locations, no complex mechanical structure, and low propulsion resistance in ultra-deep drilling.

A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250 degrees Celsius. While drilling, a drilling fluid is flowed at a temperature at the rock face such that a difference between the inherent temperature of the rock adjacent the rock face and the temperature of the drilling fluid at the rock face is at least 100 degrees Celsius.

A method is provided for utilizing a millimeter wave drilling rig (300). The method can include monitoring the permeability of a first portion of a borehole in a well while forming the borehole using the drilling rig, the drilling rig including a drill bit for mechanically removing material from within the borehole. The method can also include determining, based on at least the permeability of the borehole being below a permeability threshold, to utilize a millimeter wave drilling rig including a waveguide (430) configured for insertion into the borehole. The method can further include, in response to the determination, forming a second portion of the borehole using the millimeter wave drilling rig. A method is also provided for controlling downhole pressure in a well. An associated system for performing the method is also provided.

A device for frozen soil construction in an alpine region belongs to the field of devices for building construction, and comprises a vehicle body, a steam generator, a hydraulic platform assembly, a moving unit and a soil slowing device, the steam generator and the hydraulic platform assembly are fixed in the vehicle body, the moving unit is fixed on the inner top surface of the vehicle body, and the soil slowing device is fixed on the moving unit. The problems that in the background technology, building construction in the alpine region is affected by weather, construction cannot be carried out due to soil freezing in winter, constructors need to break soil through steel chisels and ironware, and the mode wastes time and labor and is slow in soil breaking progress can be solved, and besides the mode, an excavator and a blasting method can be used, so that the construction efficiency is improved. The problems that in a narrow construction site, an excavator cannot rotate and work cannot be carried out are solved, the danger is high when a blasting method is used for ground breaking, constructors are prone to being injured, and impact generated by blasting easily causes change of a geological structure are solved.

A wellbore is drilled in a subterranean zone with a drill bit of a drilling string. The drilling string includes tubing and a fluid separator uphole of the drill bit. While drilling, a drilling fluid is flowed through an interior of the drilling string and through the fluid separator. The fluid separator separates, from the drilling fluid, a fluid stream having a higher water-to-oil ratio than a remainder of the drilling fluidUphole of the drill bit, the fluid stream is diverted from the fluid separator to an annulus around the exterior of the drilling string based on a specified temperature of a drilling string component while the remainder of the drilling fluid flows from the fluid separator to the drill bit.

Disclosed is a pulse drilling device, including: a plurality of drill rods (100), a plurality of drill bits, a plurality of energy storage capacitors (300) and a plurality of discharge switches (400). Each of the drill rods is correspondingly connected to the energy storage capacitor, the energy storage capacitor is configured to charge the drill rod connected to the energy storage capacitor, the drill bit is connected to the drill rod, the discharge switch is connected to the drill rod to control the drill rod to discharge to the drill bit to break rocks, and the plurality of the drill rods are configured to continuously and alternately charge and discharge. The discharge switch can control the charging state of each of the drill rods correspondingly. When one of the drill rods is in the discharging state, the other drill rods are in the charging state. The drill rod in the discharging state switches to the charging state after the electric energy is exhausted, and at the same time, the drill rod in the fully charged state is continuously discharged. As a result, the plurality of drill rods can be continuously charged and discharged alternately, thereby greatly improving the drilling efficiency.

Apparatus and methods for monitoring emissions from a borehole to determine the composition of earthen material removed from the borehole are described. Monitoring can be done in real time as the borehole is being deepened with a millimeter-wave drilling beam.

A simulating and testing platform system for laser-mechanical combined efficient drilling and rock breaking, comprising a laser-mechanical combined drilling tool being fixed on a position adjusting device through a drilling tool carrying device to achieve adjustment of a drill hole space and a relative angle, a driving device configured to drive the drilling tool to rotate and advance to achieve a rock breaking function, and a confining pressure loading device configured to perform confining pressure loading of a sample to simulate a real terrestrial stress environment. Wherein, the position adjusting device achieves all-around and multi-angle continuous drilling; the confining pressure loading device simulates the real terrestrial stress environment to increase the combined rock breaking efficiency in a manner of biasing laser.

The application discloses a laser-dry ice jet combined rock breaking device and method, which comprises two mechanical arms (102, 103) and laser cutting heads (203) and dry ice jet spray guns (302) arranged on the two mechanical arms (102, 103) respectively. In the rock breaking operation, the two mechanical arms (102, 103) drive the laser cutting heads (203) and the dry ice jet spray guns (302) to break rocks in front and back respectively. The application utilizes dry ice and laser to break rocks, and greatly improves the rock breaking capacity. First, the laser breaks rocks through the thermal cracking principle, and at the same time, the temperature of the rocks is raised. Then, the dry ice jet impacts the heated area. On the one hand, the impact force contained in the dry ice jet itself can cause the rock mass to break and can also take away the molten rock. On the other hand, the dry ice contacts the high-temperature rock, rapidly sublimates, causes local rapid cooling, and the rock mass is damaged due to the uneven heating and inconsistent shrinkage. When the dry ice sublimates, its volume expands by more than 800 times, and the "micro-explosion" effect further breaks the rock.

A kind of deep hard rock hole wall-hole end while drilling fracturing microwave drill bit and method, including microwave drill bit, microwave drill bit is successively equipped with support frame front plate, metal sleeve and water inlet ring, metal sleeve is connected with the rotary drive I installed on support frame front plate, microwave drill bit is connected with microwave mode converter and microwave shunt II respectively, microwave mode converter and microwave shunt II are connected with microwave shunt I by rectangular waveguide respectively, microwave shunt I is successively connected microwave rotary joint, fixed waveguide and microwave generating device, microwave rotary joint is connected with the rotary drive II installed on support frame rear plate;Support frame front plate, support frame rear plate and microwave generating device are installed on the equipment mobile platform of fixed base, counterforce support of fixed base is connected between support frame front plate by driving, the present application realizes hard rock fast drilling while hole wall rock mass fracturing release stress, improves the efficiency of microwave stress release technology.

According to an embodiment, a method for determining the efficiency of a drilling process performed by an electric pulse drilling rig is disclosed, the rig including a drill bit (103) driven by a Max generator (100) configured to generate a discharge current (200, 300) penetrating a medium, the discharge current (200, 300) flowing between a first drill tip and a second drill tip, and the discharge current (200, 300) originating from a high-voltage pulse generated by the Max generator (100), the Max generator including a set of spark gaps (110-113) located between capacitors (130-133), the method comprising the steps of: capturing radiation at the spark gaps (110) of the Max generator, the radiation being generated when the Max generator (100) discharges; filtering the captured radiation at a predefined wavelength; and measuring the duration for which the filtered radiation is above a predefined threshold; and determining the efficiency of the drilling process based on the measured duration (201, 301).

A workstring includes a first section defining a waveguide therethrough. The first section is configured to operate up to a first temperature. A second section further defines the waveguide therethrough. The second section is at an uphole end of the workstring. The second section is configured to operate up to a second temperature lower than the first temperature.

The technology disclosed relates to a pulsed power drilling system and methods for measuring properties of a mineral substrate by using at least one of the electrodes of the drill head of the pulsed power drilling system for measurement purposes. In particular, at least one of the electrodes of the drill head that is configured to be connected to a first electrical circuit for generating high voltage current pulses is also configured to be connected to a second circuit used for the purpose of measuring properties of the mineral substrate. At least one of the plurality of electrodes of the drill head that is configured to be used for passing a high voltage current pulse between two electrodes of the drill head via the mineral substrate for the purpose of breaking the mineral substrate may thereby also configured to function as a measurement electrode. The disclosed pulsed power drilling system and method may for example be applied in rock drilling, concrete processing, mineral processing, and continuous mining. The present disclosure further relates to a drill rig comprising a pulsed power drilling system and the use of a pulsed power drilling system.

Drilling in a wellbore in a subterranean zone with a drilling string including a coiled tubing. The coiled tubing having a bulk, length normalized radial thermal resistance to heat transfer through a wall of the tubing of at least 0.008 m K / W. Flowing a drilling fluid through the drilling string while drilling, where a ratio of a drilling string bulk density to a drilling fluid bulk density is 2 or less.