Abstract: Control lines are secured to a completion string by a wrap wound around the completion string and control lines. The control lines are positioned adjacent to the completion string as it is lowered towards a well, and the wrap is wound helically around the lines and string in an open or closed loop manner. The placement and pitch of the wrap may be regulated, such as based upon the rate of advancement of the string into the well. One or multiple wraps may be used, and successive turns of the one or more wraps may overlap or be spaced from one another.

Abstract: The present disclosure relates to an air cleaning system for an off-road excavation apparatus. The off-road excavation apparatus includes an excavating component and a shroud assembly that at least partially covers the excavating component. The shroud assembly includes a first shroud component and a second shroud component. The first shroud component is moveable relative to the second shroud component to allow access to the excavating component. The air cleaning system draws air from inside the shroud assembly and includes an air cleaner, an air conduit and an air moving device that are all carried by the first shroud component as the first shroud component is moved relative to the second shroud component.

Abstract: The invention relates to a bit holder having an insertion projection and having a bore-shaped bit receptacle that has a longitudinal center axis, a convexly curved support surface being provided on a base part. A bit holder of this kind can be implemented in compact and stable fashion in particular by the fact that the longitudinal center axis of the bit receptacle intersects the support surface.

Abstract: The present invention relates to a work train, a device and a method for distance measurement between a transport device and a milling device. During the loading of a transport device with milled material from the milling device, the operator of the milling device normally transmits control commands to the transport device driver for coordination of the loading process. Through the automated distance measuring between the transport device and the milling device and control of a display device according to the present invention, this task is taken over from the operator of the milling device, who can concentrate on the actual milling process.

Abstract: A swell packer configured to simultaneously cut and seal a wellbore or slide down and seal a wellbore. The swell packer has a swellable wellbore packer section and a pair of end rings. The end rings couple the substantially cylindrical body to the swellable wellbore packer section. Each end ring forms an annular abutment surface that cooperates with the swellable member to inhibit axial movement of the swellable member on the substantially cylindrical body. At least one diamond cutter insert, polyamide button, or tungsten carbide block can be installed circumferentially and spaced apart symmetrically or near-symmetrically on at least one of the end rings.

Abstract: A gravel packing assembly gravel packs a horizontal borehole. Operators wash down the borehole using an inner string in a first position by flowing fluid from the inner string through the apparatus' toe. Operators then gravel pack by moving the inner string to one or more flow ports between a screen and the toe. Slurry flows into the borehole from the flow ports, and returns from the borehole flow through the screen. The gravel in the slurry can pack the borehole in an alpha-beta wave from toe to heel. In another condition, operators can move the inner string to a second flow port so slurry can flow into the borehole through a shunt extending from the second flow port. When gravel packing is done, operators move the inner string to a port collar in a liner of the assembly to cement the liner in the borehole.

Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.

Abstract: An articulated reaming tool is provided in casing or liner drilling on or through the tubular wall with the articulation occurring from within the tubular. Outer limit travel stops are contemplated to optionally be used to retain the elements or blades to the tubular. In the case of liner drilling the drill string has an exterior protrusion to engage the movable components that ream and extend them to increase the clearance for the tubular as the tubular advances when more hole is made.

Abstract: A tip for a degradation tool, the tip comprising a PCD structure (20) joined to a cemented carbide substrate (30); the PCD structure comprising a plurality of strata (24, 25) arranged so that adjacent strata have alternating compressive and tensile stress states, adjacent strata comprising different PCD grades and being directly bonded to each other by inter-growth of diamond grains; each stratum having a mean thickness of at most 500 microns; the PCD structure defining a working end including a rounded conical apex (22) having a radius of curvature of 1.3 mm to 4 mm.

Abstract: A downhole system and related method, which may be used in an injection well for permitting removal, repair and or replacement of equipment installed in the well without unloading the formation in which the well is placed. The system generally includes an annulus sealing device, such as a packer, at least one valve, such as a flapper valve, a latching assembly and a rigid elongate member. The rigid elongate member may be connected to the latching assembly and serves the valve to open and close, or be permitted to open and close. The latching assembly serves to disconnect, and subsequently reconnect, equipment from the annular sealing device. Such release is accompanied by closure of the at least one valve and reconnection by opening of the at least one valve. The latching assembly has seals to prevent fluid from flowing around the latching assembly when the valve is open.

Abstract: A system for providing suspension to a cab of an excavation machine such as a trencher or a surface mining machine. The system includes air cushions and elastomeric dampeners positioned between a platform and the cab. The air cushions allow for a larger displacement than the elastomeric dampeners. The air cushions have a lower natural frequency than the elastomeric dampeners. The elastomeric dampeners stabilize and support the cab in various degrees of freedom that are not supported by the air cushions.

Abstract: A bit assembly includes a bit having a bit head and a bit shank, a mounting sleeve being held in the region of the bit shank, and a support element that comprises a guidance region being associated with the bit. To allow the bit to be easily deinstalled from the bit receptacle and allow it, if applicable, to be easily installed again, provision is made that the support element comprises, in the region of its underside facing away from the bit head, a deflection segment.

Abstract: In-situ solution mining method of an ore bed, particularly containing trona, which comprises exposing to a solvent an ore region inside a borehole drilled in the ore, and dissolving a desired solute within the exposed region to provide a liquor and create a voided ‘undercut’, such undercutting making the ore susceptible to gravitational loading and crushing. Unexposed ore falls into the undercut by gravity without breaking the ore roof resulting in exposure of fresh ore to the solvent and in preventing solvent exposure to contaminating material near the roof. The desired solute is eventually dissolved away in the entire bed from its floor up to its roof. Solvent injection may be delivered through a conduit positioned inside the borehole, and may be moved by retracting or perforating the conduit. The method may employ an advancing undercut initiated up-dip and traveling down-dip, or a retreating undercut initiated down-dip and traveling up-dip.

Abstract: In an automotive milling machine, with a machine frame with longitudinal axis, with a chassis with wheels or tracked travelling drive units which support the machine frame, with a controller for the travelling, steering and milling operation, with a height-adjustable working drum, with a slewable last or single transport conveyor of specified length arranged in front of or behind the working drum as seen in the direction of travel of the milling machine, where the transport conveyor is, as a minimum, slewable sideways about an essentially vertical first axis under a slewing angle, it is provided for the following features to be achieved: the controller comprises a detection and control system which, as a minimum, detects the steering angle of the steering controller for the chassis or, as a minimum, the steering angle of the steering controller and the distance traveled or the travel speed, and controls the slewing angle of the transport conveyor in accordance with this no less than one parameter.

Abstract: A downhole assembly includes a wave seal packer including a wave portion having a wave form shape in an un-expanded condition. The wave portion configured to radially encircle a tubular with alternating and interconnected uphole and downhole portions. The packer having a substantially uniform internal radius in the un-expanded condition.

Abstract: A subsea arrangement for connecting an end of a first tubular member to an end of a second tubular member, comprising a base structure, a landing structure which rests on or is configured to be fixed to the base structure using connecting members. The subsea arrangement further comprises a holding structure, to which the end of a tubular member is fixed and which is connectable to the landing structure by being lowered downwards onto the landing structure. The connecting members are configured to give the landing structure a limited movability in a horizontal plane in relation to the base structure so as to allow the landing structure to move horizontally in relation to the base structure and the holding structure, when the landing structure and the holding structure are guided into a correct position in relation to each other.

Abstract: A Longwall equipment for mechanical extraction in longwall mining, in particular in underground coal mining, having a face conveyor arranged along the coal face, having an extraction machine which can be displaced along the face conveyor and having shield support units attached to the face conveyor at an angle thereto, is characterized in that, in order to determine the absolute height position of determined elements of the longwall equipment, a liquid-filled hydrostatic tube balance (17) is installed along the coalface (10) on the selected elements (12, 15, 31) of the longwall equipment and is connected to a base station (19) arranged in one of the gate roads (13, 14) and determined precisely in its height as a reference point, wherein pressure sensors (22) are incorporated into the tube conduit (18, 23, 24) of the hydrostatic tube balance (17), distributed over the course of the longwall equipment on individual elements (12, 15, 31) of the longwall equipment, and are connected to a central evaluation and co

Abstract: A drill bit exchange device for a shield tunneling machine includes: a housing with an aperture; a valve body housed in a chamber of the housing, the valve body being pivotable about a pivot axis (Ob) inclined at a predetermined angle with respect to an axis perpendicular to the front of a cutter head; a bit-housing hole formed in the valve body to detachably accommodate a bit; and an exchange seal recess located at the front of the chamber and at a symmetrical position from the aperture with respect to the pivot axis (Ob). The valve body is pivoted about the pivot axis (Ob) to move the bit, which faces the aperture, to the exchange seal recess, allowing the bit to be removed from the bit-housing hole and exchanged.

Abstract: The invention relates to a tool system having a bit holder and a shank bit, the bit holder comprising a bit receptacle that comprises a first and a second diameter region that lead into one another via a transitional segment (taper), a bit shank of the shank bit comprising a first and a second cross-sectional region that lead into one another via a transitional segment. With a tool system of this kind, a wear-optimized design results from the fact that the transitional segments of the shank bit and of the bit holder are arranged spaced away from one another in the direction of the longitudinal center axis of the shank bit, in order to form a resetting space.

Abstract: A plug element for conducting tests of a well, a pipe or the like, comprising one or more plug bodies of disintegratable/crushable material set up to be ruptured by internally applied effects, is disclosed. The plug element of the invention comprises an internal hollow space set up to fluid communicate with an external pressure providing body, and the plug is designed to be blown apart by the supply of a fluid to the internal hollow space so that the pressure in the hollow space exceeds an external pressure to a level at which the plug is blown apart.