Abstract: A ladder tape and a method of making the ladder tape are disclosed in the present invention, wherein, by using a knitting technique, at least two warps and at least one weft generate a knitting structure with chains on a front surface of a first band and a second band, which have the same width, and generate threading segments on a rear surface of each of the bands to bind the weft. Whereby, the resultant knitting structure has no discontinuous opaque shades, and the problem of unwanted light leakage can be avoided as well.

Abstract: A shading display and sample is provided. The display may include a frame structure, a drive assembly operably connected to the frame structure, and a shade material associated with the drive assembly for corresponding movement thereof. Operation of the drive assembly may move the shade material between open and closed positions. The display may permit users to position and operate a covering sample near an architectural opening to assess the overall operation, appearance, translucence, texture, or other qualities of the covering based on the angular orientation and material of the sample.

Abstract: A rail, such as a head rail, for an architectural covering. The rail includes a housing having elongate walls extending along a length of the housing and defining therebetween a width of the housing. A drive shaft is rotatable about a drive axis extending along the length of the housing and is configured to wind and unwind lift cords or blind material of the architectural covering. A spring assist module, e.g. a spring motor has an output shaft rotatable about an output axis with rotation of the drive shaft. The spring assist module is mounted in the housing with the output axis parallel to the drive axis. The spring assist module extends outwardly in a width direction beyond the width of the housing.

Abstract: A covering for an architectural covering is provided. The covering may include a rotatable outer tube, a rotatable inner tube, a shade attached to the outer tube, and an operating element secured to the inner tube. The outer tube may define an elongated slot extending along a length of the outer tube and opening to an interior of the outer tube. The inner tube may be received within the outer tube. The shade may be retractable to and extendable from the outer tube. The operating element may extend through the elongated slot and may be retractable onto and extendable from the inner tube. The inner tube may rotate relative the outer tube to open and close the shade once the support sheet is in a fully extended position.

Abstract: A panel assembly including a panel that can be positioned in an opening, the panel including a plurality of locking members spaced apart along at least part of a length of and proximate to opposing longitudinal edges of the panel and a guide extending along either side of the opening, each guide including at least one locking flange extending along at least part of a length of the guide, wherein in use the panel is received in the guides so that the locking members selectively engage the flanges to limit lateral movement of the panel edges.

Abstract: A window shading control system (100) includes a sensor (110) configured to produce a global radiation measurement for each direction of at least four directions, wherein each global radiation measurement is a combined direct and diffuse component of at least one of illuminance and irradiance; a processor (120) connected to the sensor and configured to compute a discrete direct component and a diffuse component for global radiation measurement; and a control circuit (130) connected to the processor and configured to control a window shading system (150) based on the discrete direct component and the diffuse component computed for at least one global radiation measurement.

Abstract: A remotely controlled gate system which includes a controller in remote communication with an actuator for raising and lowering a gate. The remotely controlled gate system includes a pivotable first gate arm and a stationary second gate arm which are interconnected by a plurality of horizontally-extending cables across a point of egress. The first gate arm may be pivotally connected to a frame positioned at a first side of the point of egress while the second gate arm may be fixed in a vertical orientation on the second side. An actuator is connected between the frame, the first gate arm, and a locking member which releasably locks the first gate arm in a vertical position. Activation of the actuator by a remote controller is operable to both pivotally adjust the first gate arm between vertical and horizontal positions, and lock or release the first gate arm with the locking member.

Abstract: A hydraulic motor circuit for driving an auger is disclosed. The circuit includes a hydraulic motor that receives oil from an oil supply via a supply line and returns oil to the oil supply via a return line. The circuit further includes a main stage pressure relief valve and a first pilot stage relief valve operable if pressure in the return line exceeds a predetermined value corresponding to an allowable inertia load acting on the motor, opening of the first pilot stage relief valve causing the main stage pressure relief valve to open, allowing flow to be diverted from the return line to the supply line and back to the motor. A control valve is configured to block flow to the first pilot stage relief valve when pressure, in the supply line is greater than pressure in the return line. If pressure in the return line exceeds pressure in the supply line, the control valve shifts open and exposes the first pilot stage relief valve to pressure in the return line.

Abstract: A technique facilitates steering during, for example, a borehole drilling operation. A steering tool is employed to control an orientation of a drill bit or other component. The steering tool comprises a tool body and at least one actuator, e.g. piezo actuator. The at least one actuator, e.g. piezo actuator, is selectively displaced via application of appropriate inputs, e.g. electrical inputs. Controlled application of the inputs enables selective deformation of the actuators in a manner which changes the orientation of the drill bit or other component to a predetermined, desired orientation.

Abstract: A downhole motor for directional drilling includes a driveshaft assembly including a driveshaft housing and a driveshaft rotatably disposed within the driveshaft housing. In addition, the downhole motor includes a bearing assembly including a bearing housing and a bearing mandrel rotatably disposed within the bearing housing. The bearing mandrel has a first end directly connected to the driveshaft with a universal joint and a second end coupled to a drill bit. Further, the downhole motor includes an adjustment mandrel configured to adjust an acute deflection angle ? between the central axis of the bearing housing and the central axis of the driveshaft housing. The adjustment mandrel has a central axis coaxially aligned with the bearing housing, a first end coupled to the driveshaft housing, and a second end coupled to the bearing housing.

Abstract: A bottom hole assembly for a casing-while-drilling operation utilizes a tethered float valve to retrieve the bottom hole assembly after the casing string has been positioned at a desired wellbore depth.

Abstract: A described bottom hole assembly includes a drill bit arranged at a distal end of a drill string and rotatable about a first central axis, the drill bit exhibiting a first unbalance force acting laterally on the drill bit at a first angular orientation, a first unbalance force marking physically applied to the drill bit and corresponding to the first unbalance force, a tool arranged axially from the drill bit, the tool exhibiting a second unbalance force acting laterally on the tool at a second angular orientation, and a second unbalance force marking physically applied to the tool and corresponding to the second unbalance force, wherein an angular offset between the first and second unbalance forces markings is able to be manipulated in order to obtain a minimized or desired tandem resulting unbalance force.

Abstract: An improved subsurface drill bit includes two rotatable cutters disposed between two ear portions of a shank, each of the rotatable cutters having an arcuate face and cutting elements. Cutting edges of the cutting elements, outer surfaces of the ear portions, and protrusions extending outwardly from the shank collectively define a circular configuration to prevent backflow of drilling debris and to prevent wobble of the drill bit in operation. The two rotatable cutters can have an on-load configuration in which each of the cutters is in contact with each other, and an off-load configuration in which each of the cutters is in contact with one of the ear portions. Several improved rotatable cutters are provided. The rotatable cutters can be interchangeable. The drill bit can further include an improved fluid delivery system, including multiple fluid passageways and reverse jets.

Abstract: A disclosed embodiment for a drill bit arm for a rotary subterranean drill bit includes a pocket that extends radially inward from an outer surface of the drill bit arm. The pocket may include a void where work piece material has been removed. The pocket may be next to a leading edge of the drill bit arm and may extend to remove at least a portion of a trailing edge of the drill bit arm. When the drill bit arm includes a lifting surface, the pocket may be next to and follow an upward curvature of the lifting sur face. The pocket may reduce wear and tear on the drill bit arm during operation. The pocket may provide a location for placing a desired piece of equipment, such as an instrumentation element and/or a communication element.

Abstract: Some embodiments described herein provide a bicomponent seal comprising an outer sheath comprising a nanocomposite material comprising aligned elongated carbon nanoparticles embedded in a first polymer; and an inner core comprising a second polymer. In some embodiments, the elongated carbon nanoparticles may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.

Abstract: A subterranean support-bolt drill bit includes a bit body rotatable about a central axis and at least one cutting element mounted to the bit body. The at least one cutting element has a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. A first recess is defined in the bit body and positioned adjacent the at least one cutting element. A first opening extends through a portion of the bit body, the first opening extending from the first recess. A coupling projection extends from the back surface of the at least one cutting element, the coupling projection being positioned within the first recess. A coupling attachment extends through the first opening and is attached to the coupling projection.

Abstract: An example method for dynamic wear prediction for a drill bit with a cutting structure may include receiving at a processor of an information handling system an unworn profile of the cutting structure and a diamond distribution of the cutting structure. The diamond distribution may include a three-dimensional diamond distribution characterized by radial and axial position on the drill bit. The method may include calculating a final predicted wear profile of the cutting structure based, at least in part, on the unworn profile and the diamond distribution. The method also may include calculating iterations of intermediary wear profiles based, at least in part, on the previous wear profile and the diamond distribution. The final predicted wear profile may indicate a fully worn portion of the cutting structure. A usable life for the drill bit may be determined based, at least in part, on the final predicted wear profile.

Abstract: Disclosed is a mobile platform on which equipment is mounted. A structural frame for a platform used to transport equipment may include a bottom rail configured to rest on the ground, a top rail vertically offset from the bottom rail, a plurality of pillars extending between the top and bottom rails, a forward support point, and an aft support point, wherein the structural frame is configured to support a downward force on the bottom rail when the structural frame is suspended between the forward and aft support points.

Abstract: A clamp assembly for coupling an auxiliary line to a marine riser includes a clamp body having a central axis and an interface radially spaced from the central axis and a clamp cap having an interface configured to be inserted axially into the interface of the clamp body, wherein the clamp body is configured to clamp to the marine riser, and the clamp body and clamp cap are configured to retain the auxiliary line in an aperture formed between the interface of the clamp body and the interface of the clamp cap

Abstract: An apparatus for mounting one or more transducers to a drill pipe. The apparatus comprises a sub-pipe having a bore and a transducer-holding assembly, wherein the transducer-holding assembly is insertable into the bore of the sub-pipe from an axial end of the sub-pipe. The apparatus further comprising a tension collar connected to the bore-defining surface of the sub-pipe and bearing upon the transducer-holder.

Abstract: Inductive coupler assemblies for controlling the stray magnetic fields of an inductive coupler to reduce the associated losses are disclosed. This results in reduced attenuation (increased efficiency) of the inductive coupler even in the presence of gaps. The assembly includes an inductive coupler having a housing, a biasing element, and a retention mechanism. The assembly further includes a wire surrounded by a ring of flux channel material disposed in the housing. In some embodiments, the retention mechanism is adapted for removal of the inductive coupler from a pipe joint end. The biasing element may be a circumferential spring disposed between the housing and the pipe joint end. The retention mechanism may be a retention snap ring, press fit, or threaded, to removably couple the housing to the pipe joint end.

Abstract: A shock absorbing device for a subterranean tool features a plurality of sequentially shearing shear pins that shear after incremental relative motion of the affected components. The travel stop is located internally to a series of spaced collets supported off a ring. Impact of an impact ring segments on the travel stop segments located internally to each collet provides a shock absorbing capability as the collets are placed in tension and deflect by radial flexing in opposed directions. The relatively moving parts are rotationally locked with the last of the shear pins to shear. A backup pair of contacting shoulders are provided if the primary engaging shoulders fail to support the lower end of the tool after impact. A snap ring maintains the parts in the shifted position after impact.

Abstract: A drill string stabilizer has an elongated cavity formed in an exterior surface of the body. An elongated blade is generally disposed to extend from the cavity. The blade is extended or retracted by rotating a stud threaded on opposite ends with left and right handed threads. Rotation of the stud causes axial movement of slide blocks threadingly engaged to the stud. A follower and track between the body and the slide blocks causes the slide blocks to slidingly engage the body. The blade track is inclined relative to the body track so that the blade radially retracts or extends relative to the body as blocks are moved along their respective tracks by rotation of the stud. The position of each stabilizer blade is independent of the other blades.

Abstract: A method of centralising tubing (10) in a wellbore comprises either providing one or more expandable elements (14) between a tubing and a surrounding casing (12) located in a wellbore and expanding the expandable elements against the casing so as to cause the tubing to centre within the casing; or expanding one or more portions (20) of a tubing against a surrounding casing located in a wellbore so as to cause the tubing to centre within the casing.

Abstract: A hole cleaning joint for a drill string is deployed into a wellbore penetrating a subterranean formation. The hole cleaning joint includes a tubular body connectable to the drill string and a hole cleaning section positionable about the tubular body. The hole cleaning section has an outer surface engageable with a wall of the well bore. The outer surface has spiral grooves extending therein defining blades therebetween, and an uphole end and a downhole end with a spiral cavity therebetween. The spiral cavity has a width that decreases towards the uphole end of the spiral cavity to define a tapered flow channel to receive cuttings therethrough whereby uphole movement of cuttings is facilitated during drilling.

Abstract: An apparatus and method to raise and lower a well rod string is provided. The apparatus includes a top plate that engages a temporary polished rod clamp and lifting means and legs affixed to a well head. The lifting means provide elevation of the well rod string to adjust the position of the polished rod clamp relative to the carrier bar of a pumping unit.

Abstract: A riser tensioner system and a wellbay structure for a floating unit or platform for deep/ultra-deep water field development. The riser tensioner system includes a first cassette, a second cassette, a tension joint, one or more centralizers, and a plurality of cylinders. The one or more centralizers provide lateral support to the tension joint. Each of the plurality of cylinders comprises a first end, a second end, and an intermediate portion. The first end of each of the plurality of cylinders is secured to the first cassette, and an intermediate portion of each of the plurality of cylinders is secured to the second cassette. The wellbay structure includes a plurality of transverse girders and a plurality of longitudinal girders. The girders form a grid comprising a plurality of slots. Each of the plurality of slots is configured for receiving and supporting a first cassette of each a riser tensioner assembly.

Abstract: A fluid used in a borehole containing suspended solid objects made by an additive manufacturing process. An additive process of solidifying a liquid composition at a succession of selected locations within a workspace, in accordance with a digital design allows a wide variety of shapes to be made. The fluid may be a drilling fluid or a borehole treatment fluid used prior to cementing and the objects may act, possibly in conjunction with other solids, to block loss of fluid into fractures in the formation around the borehole.

Abstract: Methods for selectively replacing the larger particles screened from a drilling fluid may include: circulating a drilling fluid comprising a base fluid and a plurality of particles through a wellbore penetrating a subterranean formation; passing the drilling fluid over a screen having a mesh size, thereby separating the plurality of particles into screened particles having a diameter greater than or equal to the mesh size and retained particles having a diameter smaller than the mesh size; adding a concentration of replenishment particles to the drilling fluid that comprises the base fluid and the retained particles, wherein a PSD of the replenishment particles has a d25REP greater than or equal to the mesh size; and re-circulating the drilling fluid including the replenishment particles back into the wellbore.

Abstract: A mud sensing hole finder comprising: a front steering wheel assembly, a rear wheel assembly, a sensor package, a corrosion package, a ported housing, and a tapered spring joint; wherein the mud sensing hole finder is capable of attachment to a wireline logging tool-string.

Abstract: A method of cutting a casing and a formation includes providing a rotatable cutting tool in a wellbore, wherein the rotatable cutting tool includes a first portion configured for cutting the casing and a second portion configured for cutting the formation; engaging the first portion with the casing in the wellbore; and engaging the second portion with the casing after engaging the first portion with the casing.

Abstract: A release mechanism for a jarring tool is formed by a plurality of segmented release lugs. Each lug includes a plurality of axial spaced projections on an inner surface and a plurality of grooves on an outer surface. The projections have either different widths or are separated by varying distances and releaseably engage corresponding grooves in a mandrel located within a housing of the tool. The release lugs are positioned between a trigger sleeve and the mandrel.

Abstract: A hydrated inorganic oxide material capable of elongating from a planar shape to a fiber shape along a thickness direction of the planar shape, wherein the fiber shape is at least about 25 times greater in the thickness direction than the planar shape, and wherein during elongating a radial dimension of the hydrated inorganic oxide material changes by less than about 10% may be useful in a plurality of wellbore operations. For example, a method may include introducing a wellbore fluid comprising an aqueous base fluid and a hydrated inorganic oxide material into a wellbore penetrating a subterranean formation; and swelling the hydrated inorganic oxide material by contacting the hydrated inorganic oxide material with a polar amine compound such that the hydrated inorganic oxide material elongates from a planar shape to a fiber shape along a thickness direction of the planar shape.

Abstract: Some embodiments of the present BOP control systems include a system controller configured to actuate a first BOP function by communicating one or more commands to one or more nodes of a functional pathway selected from one or more available functional pathways associated with the first BOP function, each node comprising an actuatable component configured to actuate in response to a command received from the system controller, each node having one or more sensors configured to capture a first data set corresponding to actuation of the component and a processor configured to analyze the first data set to determine a useful life remaining of the component and/or compare the first data set to a second data set corresponding to a simulation of actuation of the component.

Abstract: A plug for well drilling comprising a mandrel and members attached on an outer circumferential surface orthogonal to an axial direction of the mandrel. In such a plug for well drilling, at least the mandrel or one of the members is formed from a degradable material and a curvature radius of a bent portion thereof is from 0.5 to 50 mm. Additionally, a well drilling method using the plug for well drilling, the method comprising degrading a part or all of the plug for well drilling after blocking a borehole.

Abstract: A setting assembly includes an inflatable packer, a housing including a chamber, a setting material disposed in the chamber and having a first phase of matter and a second phase of matter, the setting material occupying a greater volume in the second phase than in the first phase, the setting material arranged to exert a setting force on the inflatable packer during transition of the setting material from the first phase to the second phase, and at least one pressure relief member within the chamber, the pressure relief member configured to protect the inflatable packer from rupturing.

Abstract: Embodiments pertain to a downhole tool that includes a mandrel made of composite material; a first slip disposed around the mandrel; a first cone disposed around the mandrel, proximate to the first slip; a second slip disposed around the mandrel; a second cone disposed around the mandrel, proximate to a first side of the second slip; a sealing element disposed around the mandrel, between the first cone and the second cone; and a lower sleeve disposed around the mandrel, proximate to a second side of the second slip, wherein the first slip comprises a circular slip body having one-piece configuration with at least partial connectivity around the entire circular slip body; and at least two grooves disposed therein, wherein the circular slip body is made from filament wound material, wherein the circular slip body comprises a plurality of inserts disposed therein, and wherein at least one of inserts comprises a flat surface.

Abstract: A well tool has an elongate, metal outer tubing and an elongate, metal inner tubing received in the outer tubing to move axially with respect to the outer tubing. A metal annular seal assembly is provided between the outer and inner tubings residing in a seal chamber of the outer or inner tubing. The seal assembly has a center ring, a chevron seal ring on each side of the center ring and an end ring at each axial end of the seal assembly. The seal chamber is tight to the seal assembly.

Abstract: A layer of permeable material is positioned on m area of lost circulation lithology in a wellbore. An example of the permeable material includes a planar member with perforations that is rolled into and retained in an annular configuration. The permeable material is lowered into the wellbore adjacent the area of lost circulation and allowed to unroll and expand radially outward against walls of the wellbore. The wellbore wall along the area of lost circulation lithology can be reamed out so the layer of permeable material is out of the way of a drill bit. Applying a bridging agent on the interface where the permeable material contacts the wellbore wall forms a flow barrier.

Abstract: The invention relates to the decommissioning of hydrocarbon wells. It concerns the artificial promoting or inducing of creep in the overburden formation 3 surrounding an oil well 1, so that the formation rock 3 encroaches against the casing 5 to form a seal. This avoids the need to plug the annulus between the casing 5 and formation 3 with cement. The overburden may be caused to creep by reducing the pressure in the annulus, by applying heat to the overburden rock or by stressing the rock repeatedly to cause fatigue in the rock 3.

Abstract: A safety valve with a pre-installed penetration member is disclosed. The penetration member is installed into the safety valve before installing the safety valve in the well. The penetration member is coupled to a cable which communicates with a downhole component, such as a gauge. Pulling the penetration member upward pulls the cable upward through the safety valve.

Abstract: A downhole tool, such as a toe sleeve, has an insert movably disposed in the housing's bore and sealably enclosing a second part of the communication path from a first port. A barrier disposed between the first and second parts of the communication path is breachable in response to a level of the applied pressure in the housing's bore. At least one retainer is engaged between the insert and the housing and at least temporarily retains the insert toward a closed position. The at least one retainer is at least partially composed of a dissolvable material and at least partially dissolves in response to the applied pressure communicated through the communication path to the second part. The at least one retainer when at least partially dissolved permits the applied pressure to initiate movement of the insert, such as from a closed position toward an opened position.

Abstract: An apparatus for controlling a flow of a fluid between a wellbore tubular and a wellbore annulus includes an inflow control device having an opening in fluid communication with a bore of the wellbore tubular, a first particulate control device forming a first fluid stream conveyed to the inflow control device; and at least one degradable flow blocker blocking fluid flow through the inflow control device.

Abstract: A disclosed reverse-out valve includes an upper mandrel, a lower mandrel movable with respect to the upper mandrel, and a reverse activated plug device arranged on the upper mandrel and including a piston arranged within a piston chamber of the upper mandrel and a prop extending longitudinally from the piston, wherein the piston chamber includes a first end and a second end, the reverse activated plug device further including a closure device movable between an open position where the piston is arranged at the first end and the prop holds the closure device open such that a reverse-circulation fluid is able to bypass the reverse activated plug device, and a closed position, where the piston is arranged at the second end and the prop is moved to allow the closure device to close and thereby prevent the reverse-circulation fluid from bypassing the reverse activated plug device.

Abstract: Aspects of the disclosure can relate to a displacement assembly that includes a housing that defines a passage to be in fluid communication with a pressurized fluid supply proximate to a first end of the passage. The displacement assembly also includes a displacement mechanism slidably coupled with the housing to reciprocate in the passage from a first orientation where the displacement mechanism is proximate to the first end of the passage toward a second orientation where the displacement mechanism is proximate to a second end of the passage opposite the first end. The displacement mechanism and the housing define a seal for preventing pressurized fluid from the pressurized fluid supply from migrating through the passage when the displacement mechanism is in the first orientation. The displacement mechanism and the housing allow pressurized fluid to migrate through the passage when the displacement mechanism is in the second orientation.

Abstract: A downhole tool has a housing with a communication path extending from a first to a second part of a bore. An indexer disposed in the communication path is movably responsive to applied pressure at the first part. The indexer counts a number of applications of the applied pressure and permits fluid communication of the applied pressure from the first part to the second part in response to the counted number. An insert in the housing bore sealably encloses the second part of the communication path and is movable from a first position covering to a second position uncovering a port in the housing. At least a portion of the insert acted upon by the applied fluid pressure in the second part initiates movement of the insert from the first to the second position. A kit having a modular housing portion and the indexer can adapt the downhole tool for use.

Abstract: The presently disclosed technique provides a method for operating a valve in a wellbore by: applying a first fluid pressure to a bore of the valve; trapping the first fluid pressure in a portion of the valve; reducing the pressure in the bore of the valve to a second fluid pressure thereby creating a pressure differential between the portion of the valve and the bore of the valve; and opening the valve responsive to the pressure differential. The valve may employ a first piston disposed in the body to trap a first fluid pressure in a chamber to create a differential pressure across a second piston when a second fluid pressure is applied to open the valve to fluid flow therethrough. The valve and the method may be used to actuate another valve downhole.

Abstract: A lower completion has a perforated region for the extraction of gas and a humidifying fin including a plurality of nozzles for injecting water droplets into the annulus surrounding the lower completion. Water droplets are mixed with the gas in the annulus surrounding the lower completion to reduce halite deposition by preventing dehydration of water within the wellbore and nearby gas reservoir.

Abstract: A redundant accumulator system for delivery of pressurized hydraulic fluid to blowout preventers (“BOPs”) and other well equipment during coiled tubing and wirelining operations that has sufficient reserve fluid capacity to simultaneously operate a plurality of BOPs and other well equipment and to hold a plurality of BOP's closed in the event of a hydraulic fluid leak, and is appropriately sized for use aboard an offshore vessel or platform or for use in close proximity to an inland wellhead.

Abstract: Aspects of a pressure and flow balanced frac tank farm are described herein. In one embodiment, a frac tank farm includes at least one battery of frac tanks comprising a plurality of frac tank trailers, a header pipe arrangement, and at least one valve between one or more of the frac tank trailers and the header system. The header pipe arrangement may include a header supply pipe to supply water to individual ones of the plurality of frac tank trailers and a header discharge pipe to discharge water from individual ones of the plurality of frac tank trailers. The header pipe arrangement may be relied upon to help balance the flow of heated fluids among the frac tank trailers. Further, the frac tank farm may include pressure balancing end pipes and a balancing header pipe arrangement to help balance fill levels and water pressure among frac tank trailers.