Abstract: The present invention relates to a chisel device for a ground milling machine, comprising a chisel holder having a mounting orifice and a milling chisel, wherein the milling chisel has a basic body of, in particular, a uniform material and has a shaft and a tool region, said shaft being held, under working conditions, in the mounting orifice while the tool region (P) protrudes, under working conditions, from the chisel holder, wherein said milling chisel has a wear protection cap consisting of carbide and having a tip and a protective jacket, wherein the wear protection cap is positioned on the tool region (P) in such a manner that it covers at least 70% of the external surface of the tool region (P). The present invention also relates to a milling chisel for such a chisel device.

Abstract: The present invention provides a method for selecting the location of a stimulating well, comprising the steps of conducting a geological study of a field containing a geothermal hydrothermal resource by operating geological useful equipment, determining a maximum horizontal stress line within said field by means of a device, generating a map of existing wells including a plurality of sub-commercial wells within said field relative to said maximum horizontal stress line, measuring a distance between each of said sub-commercial wells and the maximum horizontal stress line, determining that those sub-commercial wells aligned with, or located relatively close to the maximum horizontal stress line are stimulatable, and selecting a location of a stimulating well for stimulating the stimulatable well that is separated less than an anticipated fracture propagating distance from said stimulatable well.

Abstract: The invention relates to a wear protection cap for a bit holder arrangement, having at least two panel segments, located at an angle to one another, for covering surface regions of the bit holder arrangement, the panel segments being integrally joined to one another and the wear protection cap being configured as a cast metal part or as a forged metal part. With a wear protection cap of this kind, the service life of a bit holder arrangement can be substantially improved and machine stoppage time can be decreased.

Abstract: A technique facilitates use of a flexible conveyance, e.g. coil tubing or slick line, for placing a tool in a tubing string. The tool is coupled to an orienting and locating mechanism which is used to deploy the tool through a tubing string via a flexible conveyance. The tool is oriented by reciprocating the orienting and locating mechanism between orienting profiles. Once the tool is oriented, the orienting and locating mechanism is latched at a desired longitudinal location by a releasable key.

Abstract: A new method separating sand, solids, and produced particulates down-hole in a well producing hydrocarbons. The separation assembly can include ether one, two, or more segments or stages of varying lengths depending upon the individual application. The assembly is installed into the tubing string or delivery conduit of a well producing hydrocarbons. One stage can consist of a velocity chamber whereby separation of particulates occurs by increasing the downward velocity of particulates and reducing the upward velocity of hydrocarbons thereby allowing the particulates to “fall-out” into a lower chamber where the particulates are captured. Another stage can consist of a filter whereby particulates are captured in a chamber that can consist of filtering materials such as gravel, rock, sand, wood, or manmade materials. Each of the stages can be employed individually or in combination.

Abstract: Present embodiments are directed to coupling a cementation assembly with a hung or set liner string in a well and moving the liner string during a cementation operation. Specifically, for example, a process in accordance with present techniques includes running a cementation assembly into a well on drill pipe and engaging, with a distal end of the cementation assembly, a liner top assembly of a liner string that is positioned downhole in the well, wherein the liner string was previously positioned downhole in the well without being cemented into the well. Further, the process includes latching the cementation assembly with the liner string such that movement of the cementation assembly is translated to the liner string, and flowing cement through the drill pipe and into the liner string while moving the cementation assembly and the liner string.

Abstract: Apparatuses and methods for operating a downhole tool are disclosed. A downhole tool configuration device includes an upper stem movable between an up position and a down position. The upper stem comprises an extended portion. An outer sleeve is selectively coupleable to the upper stem at the up position and the down position and an inner sleeve is selectively coupleable to the upper stem at the up position and the down position. In the up position, the upper stem is operable to transfer tension to the outer sleeve and torque to the inner sleeve. In the down position, the upper stem is operable to transfer torque to the outer sleeve.

Abstract: The present invention relates to a ground sawing machine comprising a frame supported by rear wheels (34a, 34b) and front wheels (36a, 36b) arranged for moving the ground sawing machine over a surface (38). At least one motor (40, 6) and a saw blade (2) are mounted to the frame, at least one motor (40) being arranged to propel the saw blade (2) to cut against the surface (38). The pointing direction (80) relative the surface (38) of the rear wheels (34a, 34b) and/or the front wheels (36a, 36b) is adjustable by means of an electrically controlled actuator (56) which is controlled by means of control means (70, 71, 72) arranged to provide at least three different control signals, one for left turn, one for right turn and one for center.

Abstract: A stabilizer design for improving the likelihood of recovery of a drill string when obstructions are encountered in a wellbore is disclosed herein. The stabilizer includes a tubular body, a track, and a stabilizer blade. The track is disposed along the tubular body. The stabilizer blade is operatively coupled to the track and is configured to slide along the track from a first position to a second position.

Abstract: A knock-out plug having sections held together by a hinge along the top side. The knock-out plug can bend or fold along a crease in the bottom side when force is applied to the top side, or hinge side, of the plug. Conversely, force applied to the bottom side and peripheral wall of the knock-out plug tends to hold the sections together. When placed into the opening in an HSA, the edge of the opening and force of the soil against the bottom side during drilling keeps the plug in place and the sections intact. When desired, the knock-out plug can be hit or pounded on the top side, through the HSA channel which causes the plug to fold or bend and be released easily from the opening.

Abstract: The present invention relates to a self-propelled ground milling machine, comprising a drive engine arranged in an engine compartment and an engine compartment enclosure which covers the engine compartment at least partly to the sides and to the top. A part of the engine compartment enclosure is a cover which is adjustable between a covering position and a maintenance position. At the same time, a maintenance platform is provided which is movable between a stowage position and a maintenance position. When the maintenance platform is in the maintenance position, an operator standing on the floor surface of the maintenance platform can carry out maintenance work in the engine compartment of the self-propelled ground milling machine. The self-propelled ground milling machine preferably is a road milling machine, more particularly a large milling machine, a surface miner, a stabilizer or a recycler.

Abstract: A radio frequency (RF) and fluid coupler is for a subterranean assembly. The assembly may have a fluid passageway therein, and may include an RF antenna and a coaxial transmission line connected thereto. The coupler may include an electrically conductive hollow body that includes electrically conductive segments connected together in end-to-end relation at respective joints to provide an outer electrical pathway to connect to the outer conductor of the coaxial transmission line. An elongate conductive member may extend within the electrically conductive hollow body to provide an inner electrical pathway to connect to the inner conductor of the coaxial transmission line. A respective dielectric pressure barrier may be between the elongate conductive member and adjacent portions of the electrically conductive hollow body adjacent each of a pair of joints to define a fluid chamber to connect to the fluid passageway. A fluid port may be connected to the fluid chamber.

Abstract: A flapper valve includes a valve body having a hinge member. A flapper is pivotally mounted to the valve body through the hinge member. At least one of the valve body and the flapper includes a multi-stage valve seat. The multi-stage valve seat includes a first sealing zone and a second sealing zone that is distinct from the first sealing zone. The first sealing zone is configured to provide pressure containment at the valve body when the flapper is exposed to a first pressure and the second sealing zone is configured to provide pressure containment at the valve body when the flapper is exposed to a second pressure that is greater than the first pressure.

Abstract: An apparatus includes a blowout preventer housing comprising a bore extending therethrough and a cavity intersecting the bore and a shear ram movably positionable within the cavity and at least partially movable into the bore of the blowout preventer housing. The apparatus further includes a projectile receivable into the bore of the blowout preventer housing and configured to pierce a tubular member when positioned within the bore of the blowout preventer housing.

Abstract: A cutting element may have a substrate; and an ultrahard material layer having a substantially planar upper surface disposed on an upper surface of the substrate; wherein at least a portion of the side surface between the upper surface of the substrate and a lower end of the substrate form at least one conic surface, wherein the at least one conic surface extends a height relative to the total height of the substrate and ultrahard material layer ranging from about 1:10 to 9:10, and wherein the substrate comprises a substantially planar lower surface. The cutting elements may also be rotatable cutting elements at least partially surrounded by outer support elements.

Abstract: Embodiments of this invention relate to highwall mining, and more particularly to a launch vehicle adapted for use in highwall mining of downward angled seams of mineable material, such as coal. More specifically, the provided launch vehicle includes a lower deck, an upper deck disposed above the lower deck, a launch deck pivotally attached to the upper deck, a first conveyor belt carried on the lower deck and a second conveyor belt carried on the launch deck. A conveyor car is positioned on the launch deck while the launch deck is in a substantially horizontal orientation, then the launch deck is tilted in a vertical place relative to the upper deck to substantially match a dip angle of the seam to be mined. The conveyor car is attached to a conveyor train extending into the seam as the rearmost car in the train.

Abstract: An electrical submersible well pump assembly includes a pump driven by an electrical motor. A string of tubing connects to the well pump assembly and extends to an upper end of a well. A power cable installed in the tubing has three insulated electrical conductors embedded within an elastomeric jacket. A metal strip has turns wrapped helically around the jacket. The metal strip is compressed between the jacket and the tubing to cause the power cable to frictionally grip the tubing.

Abstract: An embodiment of the present invention relates to a system. The system includes a first vehicle, a second vehicle, and an interface between the first vehicle and the second vehicle. The interface is configured to enable the transfer of mechanical power from the second vehicle to the first vehicle when the first vehicle and the second vehicle are stationary.

Abstract: Two control systems are provided to run in parallel between a surface location and the final controlled element, in this case a subsurface safety valve. The primary control circuit is controlling until a predetermined signal is given to the secondary control line which has the effect of actuating the valve a single time against the force of a bias or a shear pin that breaks. The movement of a shuttle in the housing due to the predetermined signal being provided in the secondary line puts the secondary control system in the position of running the tool. The primary system is valved off and cannot return into service. There are just two lines into and out of the housing to make the valve operate at the desired location. A test port is provided for surface testing.

Abstract: An embodiment of the present invention relates to a vehicle. The vehicle includes an energy storage device and a traction motor electrically connected to the energy storage device. The traction motor is configured to convert electrical energy supplied by the energy storage device into a mechanical output to propel the vehicle. The vehicle also includes a vehicle connecting mechanism electrically coupled to the energy storage device and being configured for electrical coupling with a second vehicle connecting mechanism of a second vehicle to establish an electrical interface between the vehicle and the second vehicle. The electrical interface enables the transfer of electric power between the vehicle and the second vehicle.