161results about "Thermal drilling" patented technology

The utility model discloses a millimeter wave deep well drilling platform, which belongs to the technical field of drilling equipment and comprises a drilling machine, a drilling rod and a gyrotron, the drilling machine and the gyrotron are arranged above the ground surface, one end of the drilling rod is connected with a drilling winch on the drilling machine, and the other end of the drilling rod extends into the ground from a drilling well. The drill rod comprises a drill rod shell and a waveguide tube in the drill rod shell, one end of the waveguide tube is communicated with the waveguide collector, the other end of the waveguide tube is provided with an opening and extends into the ground along with a drill bit of the drill rod, and the gyrotron is provided with a dynamic waveguide and movably connected with the waveguide collector through the dynamic waveguide. The dynamic waveguide comprises a waveguide leading-in pipe, a tail pipe and a plurality of groups of waveguide transmission pipes which are connected in sequence, and a plurality of millimeter wave reflection devices are arranged in the dynamic waveguide. Millimeter wave drilling is utilized, the problems of drill bit abrasion, replacement and the like in traditional drilling are solved through millimeter wave drill bit drilling, and the drilling cost is reduced.

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

The application discloses a tunnel laser drilling device and relates to the technical field of tunnel drilling. The device comprises a first positioning device for laser positioning of a top hole, a second positioning device for laser positioning of a side wall hole, an auxiliary arm drilling device, a work platform for rotary and lifting movements, and a control device. The auxiliary arm drilling device is used for drilling operation of the top hole and the side wall hole. The first positioning device, the second positioning device, the auxiliary arm drilling device, and the work platform are all connected with the control device. The device can realize quick and accurate positioning and drilling operation, and is also beneficial to reducing the labor intensity of operators.

The invention belongs to the technical field of lunar exploration equipment, and provides a step-by-step laser-assisted rock breaking drilling tool and method for a lunar-based extreme environment, the drilling tool comprises a conversion disc, a rock drilling tool and a laser head, the laser head and the rock drilling tool are integrated in the same drilling tool structure through the conversion disc, laser or mechanical rock breaking modes can be switched according to working conditions, and the laser or mechanical rock breaking modes can be switched according to the working conditions. And step-by-step rock breaking is realized. The drilling tool is suitable for extreme environments such as low gravity, vacuum, high dust and severe temperature change of the moon, has the advantages of being compact in structure, flexible in switching and high in energy utilization rate, and can be widely applied to tasks such as lunar soil stripping, lunar rock mining, underground structure detection and lunar base construction.

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.

The technology disclosed relates to a pulsed power drilling system 100 for breaking a mineral substrate 400 and to a method for breaking a mineral substrate 400 by passing a pulsed electrical current through the mineral substrate 400. The disclosed pulsed power drilling system 100 and method 500 using microwave radiation for affecting the electric field and electric charge distribution inside ionizable inclusions in the mineral substrate 400 to create localized ionizations inside the mineral substrate 400. The disclosed pulsed power drilling system 100 and method 500 may for example be applied in rock drilling, concrete processing, mineral processing, and continuous mining. The present disclosure further relates to a drill rig 600 comprising a pulsed power drilling system 100, a computer program product comprising instructions, and the use of a pulsed power drilling system 100.

A system for performing subsurface laser perforation includes a tubing deployed within a wellbore including a target layer for perforation, the tubing in communication with a surface location, and a slim laser subsurface tool operatively coupled to the tubing, the laser subsurface tool including a body coupled to the tubing, a telescoping laser head disposed within the body and including a plurality of nested segments, a smallest of the plurality of nested segments defining an orifice at an output end of the telescoping laser head, and a lens supported by the smallest of the plurality of nested segments and covering the orifice at the output end.

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.

The application provides a laser rock breaking drilling tool protection device, and belongs to the technical field of laser rock breaking, which comprises a shell, a cavity for accommodating a laser head is formed in the shell, a through hole is formed in the shell, a lens is installed in the through hole, the lens is used for allowing a light source of the laser head to pass out while preventing rock debris from entering the shell to damage the laser head, a cleaning structure is used for cleaning the outer side surface of the lens away from the laser head to prevent rock debris from adhering to the lens, a protection structure is used for protecting the lens to prevent rock debris from impacting the lens to cause scratches on the lens, the protection structure comprises a movable protective cover, the protective cover has a protection position and a working position on its movable stroke, the shell can isolate gas and liquid pollutants, the laser head is installed in the protective shell, the laser head can normally work in a harsh environment such as dust and water, and the service life of the laser head is reduced due to the impact in the pressure environment in the working and standby states.

The invention relates to a drill head (1) for a drilling tool, the drill head (1) extending along a longitudinal axis (Z) and comprising a drilling end (10) and an attachment end (11), wherein the attachment end (11) is configured to be fitted to the drilling tool, and wherein the drilling end (10) comprises a centre (10- A) and at least one pair of electrodes (100), wherein the at least one pair of electrodes (100) comprises a high-voltage electrode (100-1) and a ground electrode (100-2), wherein the high-voltage electrode (100-1) and the ground electrode (100-2) are radially aligned with the centre (10-A) of the drilling end (10), and wherein the drilling end (10) comprises at least one intermediate electrode (102) mounted between the high-voltage electrode (100-1) and the ground electrode (100-2), wherein the intermediate electrode (102) is mounted on an insulating support (104).

The systems and techniques described herein illustrate mass flow configurations for non-contact boring. Mass flow described herein may be utilized for various different purposes. In certain embodiments, a conical head may be disposed on the system of the non-contact boring system and may cause air to circulate in a manner that causes spoil to be airborne in front of the bore face, allowing for improved excavation of spoil generated by the non-contact boring.

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 novel construction method and device for a rotary drilling rig. The novel rotary drilling rig utilizes a high-energy pulse power supply to excite a super-energy plasma torch, the plasma torch fuses rock, and the rock is efficiently drilled in cooperation with an alloy drill bit. According to a traditional rotary drilling rig, the gravity of a drilling tool is utilized, the downward probing force of a drilling rod acts on a drill bit, and hard cutting is conducted on rocks. According to the novel plasma drilling tool designed by the invention, hard cutting and electric blasting are fused, so that the drill bit can quickly enter rock, and the novel plasma drilling tool is an efficient and energy-saving rock breaking tool.

The invention relates to the technical field of steam drills, and discloses an integrated steam drill which comprises a drill rod, the drill rod comprises a drill bit, and a steam generator and a gas-liquid mixing assembly are sequentially arranged at the position, close to the drill bit, of the drill rod; the gas-liquid mixing assembly comprises a liquid storage part and a gas conveying pipeline capable of being communicated with an external high-pressure gas source, an atomizer is connected to the gas conveying pipeline, and a gas-liquid mixing cavity is formed in the atomizer. A coil pipe and a combustion mechanism are arranged in the steam generator, the inlet end of the coil pipe is communicated with the outlet end of the gas conveying pipeline, and the combustion mechanism is close to the coil pipe and can be communicated with an external gas source. The combustion mechanism heats the gas-liquid mixed medium in the coil pipe into steam by combusting gas; one end of the drill bit is connected with the steam generator, and the other end of the drill bit is provided with a nozzle communicated with the outlet end of the coil. The drill bit is directly connected with the steam generator, so that the heat loss of the steam in the conveying process can be reduced, and the working efficiency of the drill bit is ensured.

A system and method for applying an insulative coating to an inner surface of a coiled tubing. A tractor is mounted inside a coiled tubing, wherein the tractor includes a tractor body having a tractor propulsion system; and a spray head connected to the tractor body. The spray head is propelled along approximately an entire length of the coiled tubing, wherein propelling includes spraying an insulative coating on an interior surface of the coiled tube, the coating, when applied to the interior surface of the coiled tube and cured, including at least 50 percent Hydro-NM-Oxide.

A method of controlling a drilling apparatus, the drilling apparatus comprising: a drill bit having at least two electrodes; the pulse power generator is used for generating high-voltage current pulses; and a fluid removal system comprising a first fluid removal device, and the method comprises: during a drilling operation, controlling the drilling apparatus in a first operating state in which the drill bit breaks the mineral matrix and forms a hole in the mineral matrix; and controlling the drilling apparatus in a second operating state during a fluid pumping operation subsequent to the drilling operation in which the first fluid removal device removes liquid from the holes formed in the mineral matrix.

A pulsed power drilling system for crushing a mineral matrix and a method of crushing a mineral matrix by passing a pulsed current through the mineral matrix via at least one fluid zone that is at least partially ionized by using microwave radiation. The disclosed pulsed power drilling systems and methods use microwave radiation for at least partially ionizing a fluid region extending between an electrode and a surface of a mineral matrix. The disclosed pulsed power drilling systems and methods may be applied, for example, in rock drilling, concrete processing, mineral processing, and continuous mining. The present disclosure further relates to a drilling machine comprising the pulsed power drilling system and a use of the 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.

To provide suitable hybrid excavation Shimoiwa.SOLUTION: A method for utilizing a millimeter wave drilling apparatus (300) is provided. The method can include monitoring a permeability of a first portion of a borehole of a well while forming the borehole using a drilling apparatus including a drill bit for mechanically removing material from within the borehole. The method can also include determining to utilize a millimeter wave drilling apparatus including a waveguide (430) configured for insertion into the borehole based at least on the permeability of the borehole being below a permeability threshold. The method can further include, in response to the determining, forming a second portion of the borehole utilizing the millimeter wave drilling apparatus. A method for controlling downhole pressure of a well is also provided. An associated system for performing the method is also provided.SELECTED DRAWING: Figure 3

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.