Abstract: Disclosed are methods of deflecting expandable bullnose assemblies. One method includes introducing a bullnose assembly into a main bore of a wellbore, the bullnose assembly including a body and a bullnose tip arranged at a distal end of the body and being configured to move between a default configuration, where the bullnose tip exhibits a first diameter, and an actuated configuration, where the bullnose tip exhibits a second diameter different than the first diameter, advancing the bullnose assembly to a deflector arranged within the main bore and defining a first channel that exhibits a predetermined diameter and communicates with a lower portion of the main bore, and a second channel that communicates with a lateral bore, and directing the bullnose assembly into either the lower portion of the main bore or the lateral bore based on a diameter of the bullnose tip as compared to the predetermined diameter.

Abstract: The present invention relates to a downhole system for performing an operation in a well downhole. The system comprises an elongated tubing string (3) for conducting fluid in the well; a turbine (7) driven by the fluid for driving a shaft (8); a generator (9) driven by the turbine by means of the shaft, a fluid-driven driving section (5) comprising a pump (6) driven by the fluid supplied through the shaft for propelling the fluid-driven driving section and the tubing string forward in the well, and an electrically driven driving section (10) comprising an electrical motor (11) powered by the generator (9) for propelling the driving section and the tubing string forward in the well, wherein the fluid-driven driving section (5) is arranged between the generator (9) and the electrically driven driving section (10).

Abstract: This invention relates to a movable collecting device (1) for downhole separation and removal of particulate matter (8) from a petroleum well, the collecting device (1) having a first end portion (11) and a second end portion (12), an exterior and an interior; the collecting device (1) comprising an outer wall (4) extending axially from the first end portion (11) and to the second end portion (12), a portion of the wall (4) surrounding a collecting chamber (5); a nose (2) at the first end portion (11) comprises at least one external inlet (23), the external inlet (23) being in fluid communication with the collecting chamber (5); a drive unit (3) positioned at the second end portion (12); and a means (6) for transporting the particulate matter (8) from the exterior of the collecting device (1) to the interior of the collecting device (1) through the external inlet (23), and a portion of the wall (4) comprises a screen in fluid communication with the collecting chamber (5) and the collecting device's (1) exteri

Abstract: An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured tool body assembly having valving members (e.g., safety or kelly values) and valving members holding plugs, balls, or darts to be dropped. In one embodiment, the ball(s), dart(s) or plug(s) are contained in a sliding sleeve that shifts position responsive to valve rotation. An optional indicator indicates to a user or operator that a ball or plug has passed a selected one of the valving members. A transmitter (or transceiver) provides an ability to generate a wireless signal that is received by receivers (or transceivers) on the tool body assembly. Each receiver (or transceiver) controls an electrical actuator that engages a valving member or the indicator. Wireless signals can be used to open or close a valve or to reset a “tripped” indicator.

Abstract: A sealing element comprises two distinct materials of different melting points. An outer shell material has a higher melting point than an inner core material. The core material can be a relatively low melting point metal, plastic or polymer. The seal is positioned in the wellbore and, in response to heating to a selected temperature, such as a bottom hole static temperature, the core material melts or softens. Upon melting or softening of the inner material, the outer shell's elastic modulus decreases, allowing longitudinal compression and radial expansion of the sealing element. The inner material can also thermally expand and thereby assist or cause radial expansion of the outer shell. The sealing element can provide a metal-to-metal seal with a casing or tubing. The cross-sectional shape of the outer shell can take various shapes to promote controlled compression, expansion and sealing.

Abstract: A plugging device, apparatus, and method. The plugging device includes an expandable member configured to move from a first, retracted position to a second, expanded position, a counter configured to count a number of restrictions in a conduit that the plugging device passes through, and an actuator configured to move the expandable member from the first position to the second position in response to the counter counting a predetermined number of restrictions. The expandable member in the expanded position prevents the plugging device from passing through a target restriction.

Abstract: Methods and compositions are provided that utilize magnesium metal ore waste in well cementing. A method of cementing may comprise introducing a cement composition into a subterranean formation, wherein the cement composition comprises water and a cement component comprising magnesium metal ore waste; and allowing the cement composition to set.

Abstract: A zone isolation system comprising an isolation flow path arranged radially outwardly with respect to an internal bore of a production tubing. An isolation valve assembly is arranged in the isolation flow path. The isolation flow path is fluidly connected to a screen flow path defined by the annular space between a filtering assembly and a basepipe. The isolation flow path may traverse one or more zones and can extend to the wellhead, connecting to an isolation pump. The basepipe may further comprise an inflow control device such as a sliding sleeve.

Abstract: Disclosed are subsurface safety valves having an expanding piston used to increase the opening force for the safety valve. One disclosed safety valve includes a housing having a piston bore defined therein and configured to receive hydraulic fluid pressure, the piston bore providing a tapered portion having a first end and a second end, wherein a cross-sectional diameter of the tapered portion progressively increases from the first end to the second end, and a piston assembly movably arranged within the piston bore and comprising a piston rod that extends longitudinally within at least a portion of the piston bore and an expanding piston coupled to the piston rod, wherein the expanding piston is configured to move between a contracted configuration and an expanded configuration to sealingly engage the tapered portion as the piston assembly moves between the first and second ends.

Abstract: A valve can include a closure device which selectively permits and prevents fluid communication between an interior and an exterior of the valve, an incremental displacement device which incrementally displaces the closure device in response to pressure differentials between the interior and the exterior of the valve, and an accelerator device which accelerates displacement of the closure device in response to a predetermined pattern of the pressure differentials. A method of operating a valve in a well can include applying a predetermined pattern of pressure differentials between an interior and an exterior of a tubular string in which the valve is connected, thereby incrementally displacing a closure device of the valve, and accelerating displacement of the closure device in response to the predetermined pattern of pressure differentials, thereby displacing the closure device to a selected one of an open and a closed position.

Abstract: A method for completing a wellbore in a subsurface formation includes providing a first base pipe and a second base pipe. Each base pipe comprises a tubular body forming a primary flow path and has transport conduits along an outer diameter for transporting fluids as a secondary flow path. The method also includes connecting the base pipes using a coupling assembly. The coupling assembly has a manifold, and a flow port adjacent the manifold that places the primary flow path in fluid communication with the secondary flow path. The method also includes running the base pipes into the wellbore, and then causing fluid to travel between the primary and secondary flow paths. A wellbore completion apparatus is also provided that allows for control of fluid between the primary and secondary flow paths.

Abstract: The present invention is for a downhole tool having a perforator gun portion disposed within a housing of the downhole tool for perforating an oil and gas formation. The downhole tool also includes a bypass passageway for directing fluid past the perforator gun portion in the downhole tool to permit fluid flowing into the downhole tool to flow out of the downhole tool to facilitate an oil and gas operation. Furthermore, the downhole tool is used in a method of performing the oil and gas operation in a wellbore by pumping fluid through the downhole tool.

Abstract: The device for the decolmatation of the critical area of exploitation and injection wells includes a generator of electromagnetic pulses of resonant frequency, which is equipped with a controller (not depicted), and a coaxial cable which connects the generator to a downhole instrument, in which at least two converters for converting electromagnetic energy into mechanical energy are arranged, the converters operating at different frequencies. Furthermore, the converters for converting electromagnetic energy into mechanical energy are arranged in the downhole instrument in series in order of decreasing resonant frequency, and the dimensions of each of the converters are determined by the magnitude of the resonant frequency, each of which differs from the previous one by an integer of octaves.

Abstract: A method of evacuating hydrocarbons from a plurality of nested tubulars of a well pipe that extends from an underwater well tree includes an initial step of attaching a fluid transmission line to the underwater well tree, the fluid transmission line having one end portion forming the attachment to the tree and the other end portion attached to a pump that forces fluid under pressure to the tree and attached nested tubulars. Openings are formed through one or more tubulars of the nested tubulars at a selected location. A specially configured fitting is attached to the tubulars. The fitting seals the openings. The fitting has an expandable seal that is expandable responsive to rotation of a rotating member that rotates upon a saddle, pulling a tapered mandrel against the seal. The saddle surrounds the mandrel and bears against an outer tubular of the nested tubulars. The fitting mandrel has a bore. Hydrocarbons escape from the tubulars via the mandrel bore.

Abstract: A power system adapted for supplying power in a high temperature environment is disclosed. The power system includes a rechargeable energy storage that is operable in a temperature range of between about seventy degrees Celsius and about two hundred and fifty degrees Celsius coupled to a circuit for at least one of supplying power from the energy storage and charging the energy storage; wherein the energy storage is configured to store between about one one hundredth (0.01) of a joule and about one hundred megajoules of energy, and to provide peak power of between about one one hundredth (0.01) of a watt and about one hundred megawatts, for at least two charge-discharge cycles. Methods of use and fabrication are provided. Embodiments of additional features of the power supply are included.

Abstract: Methods and systems are described for improved drilling operations through the use of real-time drilling data to predict bit wear, lithology, pore pressure, a rotating friction coefficient, permeability, and cost in real-time and to adjust drilling parameters in real-time based on the predictions. The real-time lithology prediction is made by processing the real-time drilling data through a multilayer neural network. The real-time bit wear prediction is made by using the real-time drilling data to predict a bit efficiency factor and to detect changes in the bit efficiency factor over time. These predictions may be used to adjust drilling parameters in the drilling operation in real-time, subject to override by the operator. The methods and systems may also include determining various downhole hydraulics parameters and a rotary friction factor. Historical data may be used in combination with real-time data to provide expert system assistance and to identify safety concerns.

Abstract: A technique facilitates formation of a gravel pack. Gravel slurry is delivered downhole at least in part along a transport conduit from one screen joint to the next. Downstream of a joint connection between two adjacent screen joints, gravel slurry from the transport conduit flows into a gravel slurry chamber. From the gravel slurry chamber, the gravel slurry flows into at least one packing conduit or into at least one packing conduit and at least one transport conduit. The packing conduits are used to discharge the gravel slurry for formation of a gravel pack in a wellbore annulus surrounding the gravel packing system, and the transport conduits are used to deliver the gravel slurry to downstream screen joints for discharge at a more distant location along the wellbore.

Abstract: Disclosed are circulating sleeves that can be opened and closed and permanently closed. A disclosed completion system includes a completion string having a circulating sleeve movably arranged therein, the circulating sleeve having a locking profile defined on an outer radial surface thereof and a shifting profile defined on an inner radial surface thereof, a service tool configured to be arranged at least partially within the completion string and including a shifting tool having one or more shifting keys configured to mate with the shifting profile, wherein, when the shifting keys locate and mate with the shifting profile, an axial load applied on the service tool axially moves the circulating sleeve, and a release shoulder assembly arranged within the completion string and comprising a release shoulder that defines a channel configured to receive a locking mechanism occluded within the channel until the release shoulder is moved axially.

Abstract: The present invention notably concerns a method for repairing a hanger (D) of a liner (B), with a view to making it leak-tight, this liner (B) being placed inside and in the continuation of the casing (A) of a well.

Abstract: A device and a method are for perforating downhole casings. The method includes arranging a device on a drill string, running the device into a bore hole, dropping a ball down through the drill string down to the device for causing a first sequence of pressure rise and relief, causing a firing system to trigger a charge for punching one or more holes through a surrounding casing wall in response to the first sequence of pressure rise and relief, driving the pressure inside of the drill string up to a second level, and causing a rupture disc at the second level to burst so as to establish a fluid communication between the inside and outside of the drill string through the opening in the pipe wall of the pipe section.

Abstract: A system and method for boosting the pressure of multi-phase fluids to enable handling of slug flow from oil and gas wells. The system is arranged to include a cyclonic separator having outlets of a first gas-rich line and a first liquid-rich line, a gravitational separator having outlets of a second gas-rich line and a second liquid-rich line, downstream of the cyclonic separator. There is also a gas compressor for boosting pressure in the second gas-rich line and a liquid pump for boosting pressure in the second liquid-rich line. The boosted gas and liquid is received by a commingler downstream which outputs a combined fluid flow. Control valves are provided at various stages of the system that are activated in response to slug flow detected by flow regime detectors upstream of the cyclonic separator.

Abstract: Pumping a pre-flush composition into a subterranean reservoir may contact at least a portion of non-polar material within a reservoir path. The pre-flush composition may have or include a polar fluid and at least one surfactant. The pre-flush composition may in situ form an in situ fluid in the reservoir path. The in situ formed fluid may include a portion of the non-polar material from the reservoir path, a polar phase from the polar fluid, and at least one surfactant. Pre-flushing the reservoir path may allow for greater hydrocarbon recovery when performing a subsequent operation as compared to an otherwise identical operation absent the pre-flushing the reservoir.

Abstract: Suspensions comprising amphiphilic nanoparticles and at least one carrier fluid. The amphiphilic nanoparticles may be formed from a carbon-containing material and include at least a hydrophilic portion and a hydrophobic portion. The hydrophilic portion comprises at least one hydrophilic functional group and the hydrophobic portion includes at least one hydrophobic functional group. Methods of forming the flooding suspension and methods of removing a hydrocarbon material using the flooding suspensions are disclosed.

Abstract: Disclosed are systems and methods of injecting steam into a wellbore. One disclosed injection tool includes a body defining an inner bore and a radial flow channel, one or more fluid conduits defined in the body at the radial flow channel, a shroud arranged about the body such that an annulus is defined and in fluid communication with the one or more fluid conduits and the surrounding wellbore environment, a sleeve arranged within inner bore and movable between a first position, where the sleeve occludes the one or more fluid conduits, and a second position, where the one or more fluid conduits are exposed, and first and second seals generated at opposing axial ends of the radial flow channel when the sleeve is in the first position.

Abstract: The present invention relates to a downhole system for a well producing hydro-carbon-containing fluid. The downhole system comprises a casing comprising a first casing part and a second casing part, the second casing part having a casing thickness and comprising at least one sleeve having an inner face, and the second casing part being substantially a monobore in that the second casing part has an inner diameter which varies by less than twice the casing thickness; and a drop device for being immersed into the casing having at least one sleeve having an inner face. The drop device comprises a body having a width; a leading end; and a trailing end. The body further comprises an expandable sealing element arranged between the leading end and the trailing end, moving from a first position in which fluid is allowed to pass the device and a second position in which the sealing element abuts the inner face of the sleeve and seals off a first zone in the well from a second zone in the well.

Abstract: The method and apparatus for enhancing of the formation fracturing around a wellbore the regime of resonance by means of applying vibrations to the formation surrounding wellbore which is undergoing pressures exceeding the fracture gradient pressure of the formation. The method includes the steps of arranging a device attached to the end of tubing inside the wellbore in the vicinity of perforations, providing a fracturing fluid via tubing into a device for generating vibrations on a resonant frequency fr in accordance with following expression: f r = c 2 ? ? ? r 1.2 ? HL ? ( r + W ) , where fr is the frequency of resonance, c is a speed of sound in fluid, ? equals 3.1415, r is the required width of fracture, H is a combined thickness of a casing and a cement bond surrounding the casing, W is a distance on a casing arch between an adjacent perforations, L is the required length of fracture.

Abstract: An apparatus and methods for forming a transverse fracture in a subterranean formation surrounding a wellbore including measuring a property along the length of the formation surrounding the wellbore, forming a stress profile of the formation, identifying a region of the formation to remove using the stress profile, removing the region with a device in the wellbore, and introducing a fluid into the wellbore, wherein a transverse fracture is more likely to form than if the region was not removed. Some embodiments benefit from computing the energy required to initiate and propagate a fracture from the region, optimizing the fluid introduction to minimize the energy required, and optimizing the geometry of the region.

Abstract: For increasing productivity of oil, gas and water wells, a horizontal or inclined well is excavated, a plurality of cavities are formed transversely to the direction of elongation of the well so as to provide partitions between them, and hydrocracking is carried out to act on the partitions between the cavities.

Abstract: A gas separator for separating gas from a fluid in a production stream in a producing hydrocarbon well is described. The gas separator includes a central tube sized to fit into a well casing of the producing hydrocarbon well and having an input at its lower end for receiving the production stream and perforations at its upper end to allow the production stream to flow into the space between the central tube and the well casing. A suction tube is located inside the central tube, the suction tube is operable to draw fluid from the space between the central tube and the well casing and to deliver the fluid to an artificial lift mechanism.

Abstract: A method and control apparatus for controlling more than one rock drilling rig operating on the same working site, and a rock drilling rig. A master unit controls the drilling by the rock drilling rigs via a wireless network and sends the rig the necessary information about the drilling plan of the working site.

Abstract: A well-logging system may include a tool assembly to be positioned within a borehole of a subterranean formation and to store second data including a second time marker related to a first time marker. The well-logging system may include a controller above the subterranean formation. The controller may process first data including the first time marker, recover the second data, and synchronize the second data based upon the second time marker and the first time marker.

Abstract: Embodiments of the disclosure may include systems and methods for estimating an acoustic property of an annulus in a cement evaluation system. In one embodiment, a casing arrival signal is acquired at acoustic receivers a cement evaluation tool. A spectral amplitude ratio is calculated based on the casing arrival signal. The spectral amplitude ratio is scanned to detect and identify discontinuities. If discontinuities are detected, the frequency at the discontinuity may be used to estimate a wavespeed of the annulus. If discontinuities are not detected, attenuation dispersions are calculated and estimated, and an estimated wavespeed and parameters are updated until the calculated and estimated attenuation dispersions match.

Abstract: A system for detecting fluid influxes and losses can include a sensor which detects floating vessel movement, and a neural network which receives a sensor output, and which outputs a predicted flow rate from a wellbore. A method can include isolating the wellbore from atmosphere with an annular sealing device which seals against a drill string, inputting to a neural network an output of a sensor which detects vessel movement, the neural network outputting a predicted flow rate from the wellbore, and determining whether the fluid influx or loss has occurred by comparing the predicted flow rate to an actual flow rate from the wellbore. Another method can include inputting to a neural network actual flow rates into and out of the wellbore, and an output of a sensor which detects vessel movement, and training the neural network to output a predicted flow rate from the wellbore.

Abstract: A system for acquiring environmental data from a plurality of sensors is provided with a microprocessor having a sensor input for receiving data from a sensor, a memory access port for communicating with a memory system, and an output port for issuing data. Plural sensors each produce associated sensor signals responsive to respective characteristics of an environment. The sensor signals are propagated to the sensor input of the microprocessor, and a memory system is coupled to the memory access port of the microprocessor for storing calibration data associated with the plurality of sensors. A communications arrangement is coupled to the output port of the microprocessor.

Abstract: A drilling optimization collar for use proximate a drilling tool within a wellbore includes a fiber optic sensor filament that is sized and configured to fit within a groove formed within the drilling optimization collar. The drilling optimization collar may be a pipe segment that is sized and configured to be installed in a drill string proximate the drilling tool, and may have a plurality of sensor elements. All or a portion of the sensor elements may be formed by discrete segments of the sensor filament, and as such, the sensor filament includes sensor elements that are configured to sense a condition of the wellbore and a load on the drilling optimization collar.

Abstract: The present disclosure relates to a system, apparatus and method for guiding a drill bit based on forces applied to a drill bit, and drilling methods related to same.

Abstract: In one embodiment, a method includes drilling a wellbore in a formation with a drilling tool. The method further includes receiving electromagnetic radiation using an opto-analytical device coupled to the drilling tool. The method also includes determining a distance between a portion of the drilling tool and the formation based on the received electromagnetic radiation.

Abstract: The present invention is a drill-hole survey and geoscientific data acquisition system that includes a down-hole tool including: a sensor control module, at least one sensor module, and data, control and electrical power connection means, wherein the sensor control module, the at least one sensor module, and the connection means are each sized and shaped so that they can be placed within a drill-hole and can travel along the length of the drill-hole, and can travel along the drill-hole. the sensor control module is a discreet control module, and each of said at least one sensor modules are also each a discreet sensor module, and each of the discreet control and sensor modules are inter-connectable via said data, control and electrical power connection means so that the series of modules are connected end to end to make one continuous elongate tool that contains a series of interconnected modules.

Abstract: A system and method for downhole signal enhancement. The system includes a downhole tool having one or more sensors coupled thereto. The one or more sensors may measure internal pressure and one or more parameters selected from the group consisting of external pressure, pressure sensor temperature, weight on bit, torque on bit, bending moment, roll gyro, tangential acceleration, radial acceleration, and axial acceleration. A noise estimator may be coupled to the downhole tool and estimate a downhole noise component in the one or more parameters. A telemetry modulator may be coupled to the downhole tool and generate a signal that includes the estimated downhole noise component and a telemetry component. The downhole noise component in the signal may be reduced based at least partially upon the estimate.

Abstract: An MWD apparatus has a bottomhole assembly for supporting a tool string and an antenna. The tool string has a sensor and an electromagnetic telemetry device. The tool string affixes in a muleshoe and carrier sub of the assembly using a stinger and fastener. An antenna disposes in an emitter sub of the assembly. The antenna is attached to extend from the tool string so the antenna is in electrical communication with the telemetry device. Finally, the portions of the assembly are connected together, and the antenna is affixed in the uphole portion of the assembly using a conductive landing and one or more fasteners. In this way, the tool string and the antenna are held in tension inside the assembly. The MWD apparatus can be used with an air drilling assembly having an air hammer and a motor coupled downhole of the apparatus. Non-magnetic and regular drill collars can couple uphole of the apparatus, along with a jet sub.

Abstract: A method and a system determine multi-zones commingling in oil field production. The system includes a processing circuitry configured to: identify a plurality of zones in a well to be analyzed based on first differences in properties or flow performance; calculate a normalized bubble point pressure; define a first bottom hole flowing pressure for the well; define flowing pressures after excluding the zone with the highest saturation pressure; calculate a normalized bottom-hole flowing pressure and a corresponding flow rate ratio; plot the flow rate ratio versus the normalized bottom-hole flowing pressure and the flow rate ratio versus the bottom-hole flowing pressure in a Cartesian scale; and determine the feasibility to produce from all the zones.

Abstract: In one embodiment, a downhole drilling tool configured to engage a formation to form a wellbore includes one or more channels formed in a bit body, the channels configured to direct electromagnetic radiation. The downhole drilling tool also includes an opto-analytical device integrated with the downhole drilling tool, the opto-analytical device configured to receive electromagnetic radiation directed through the one or more channels and detect a drilling characteristic based on the received electromagnetic radiation.

Abstract: The present disclosure provides systems, tools, and methods for enhancing a measurement of a fluid in a borehole, pipe, conduit and/or the like. The systems, tools, and methods may involve an electromagnetic measurement tool that includes a transmitting antenna configured to transmit electromagnetic energy, a receiving antenna configured to receive the electromagnetic energy, and a metamaterial element comprising a negative refractive index. The metamaterial element may focus the electromagnetic energy. The electromagnetic system may comprise one or more antennas that are disposed adjacent to or in contact with the fluid, electromagnetic energy may be transmitted via the transmitting antenna, and the electromagnetic energy may be received with the receiving antenna to measure a property of the fluid.

Abstract: Apparatus and methods for improved fluid sampling are disclosed. A sampling bottle for collection of a fluid sample comprises concentrically arranged first, second and third sampling containers (304A, 304B, 304C). First, second and third check valves (311, 312, 314) regulate flow of the sampling fluid from outside the sampling bottle into the first sampling container, and into the second and third sampling container.

Abstract: Methods and equipment have been developed that combine the use of continuous miners, flexible conveyor trains, and longwall mining techniques to provide flexible and efficient removal of resources from subterranean formations. Some systems include: a main gate; and a tailgate connected to the maingate by an active mine face; wherein the active mine face extends at an angle between 95° and 135° relative to the maingate.

Abstract: The invention relates to a method pertaining to a bolting configuration (299) where a drilling unit and a bolting unit are arranged to be supported by a bottom carriage (330) via a respective top carriage (271; 272), wherein said bottom carriage (330) is arranged to be supported by a feed beam (230), relative to which said bottom carriage (330) is displaceable, wherein said top carriages (271; 272) are arranged to alternately be supported by said bottom carriage (330) to alternately be brought into operative engagement and hereby alternately be locked relative to said bottom carriage (330).

Abstract: A rock bolting machine for installing a rock bolt in a roof of an underground space is provided. The rock bolting machine can include a vehicle and a boom. A rock bolting assembly can be attached to the boom. The rock bolting assembly can have a drill bolt mast with a frame, a drilling portion adapted to drill a bolt hole and a bolting portion adapted to secure the rock bolt in the bolt hole. The drilling portion can have a drill rod, a drive unit and a drill motor, where the drive unit comprises an input on a top of the drive unit and an output on the top of the drive unit. The input of the drive unit can be connected to the drill motor and the output connected to a bottom end of the drill rod.

Abstract: A rock bolting machine for installing a rock bolt in a roof of an underground space is provided. The rock bolting machine can include a vehicle having a direction of travel, a rock bolting apparatus having a drilling portion adapted to drill a hole in the roof of the underground space and a bolting portion adapted to install a rock bolt in a hole created with the drilling portion. A boom can be provided with the distal end of the boom connected to the rock bolting apparatus and the proximal end moveably connected to the vehicle. Movement of the proximal end of the boom in the direction of travel of the vehicle causes the distal end of the boom to move in the same direction.

Abstract: A method of installing a rock bolt is provided. A bolt hole can be formed by applying an insertion force to a drill rod and while the insertion force is being applied, applying a rotational force on the drill rod to rotate the drill rod and bore the bolt hole. A rock bolt can then be installed in the bolt hole by applying an insertion force to the rock bolt to insert the rock bolt into a bolt hole and while the insertion force is applied to the rock bolt, applying a rotational force on the rock bolt to rotate the rock bolt in the bolt hole. As the rotational force being applied to the rock bolt increases, the insertion force applied to the rock bolt can be decreased until no insertion force is being applied and the rock bolt has been torqued to a desired torque amount.

Abstract: A turbine engine blade removal apparatus with a pair of opposed outwardly biased blocks are positioned proximal a blade root and corresponding rotor disc slot between opposed axial faces of the subject first rotor disc and an adjoining second rotor disc. The blocks are outwardly biased in abutting contact with first and second rotor disc axial faces, aligning an aperture of a guide bushing with an exposed axial face of the blade root, the guide bushing coupled to at least the first block. A punch is inserted in the guide bushing aperture so that a punch tip is in abutting relationship with the blade root axial face. An impact tool drives an opposite impact end of the punch, causing the punch to direct a relative driving force on the blade root, separating the blade root from the corresponding rotor disc slot.