Abstract: A method and system for determining a position of a linearly translating member. The method may comprise transmitting an excitation into a linearly translating member through one or more couplers from an acoustic device disposed in an outer housing, recording a reflected excitation from the linearly translating member with the acoustic device, and identifying a position of the linearly translating member with respect to the acoustic device. The system may comprise an outer housing, a linearly translating member disposed within the outer housing, an acoustic device disposed in the outer housing and configured to transmit an excitation at various frequencies and various amplitudes and record returned excitation frequencies and amplitudes and time of travel, and an information handling system in communication with the acoustic device.

Abstract: Methods and systems for executing a simulation of a multibody system are described herein. In one broad aspect, there is provided a computer-implemented method for executing a simulation of a multibody system, where a physics-based simulator is used to simulate the multibody system by: partitioning the multibody system into a plurality of subsystems, the multibody system comprising bilateral and unilateral constraints, and a set of interfaces that couple at least two of the subsystems is defined; at each of a plurality of time steps, employing a Schur complement method to compute an effective mass at each interface of the set of interfaces, and solving each of the plurality of subsystems to obtain a plurality of internal impulses.

Abstract: An array of sensors provided on the outside of a tubular string for measuring a property within the tubular string. The array of sensors may include a plurality of connected sensors, wherein at least one of the plurality of connected sensors is at least partially encompassed in a shroud. A snorkel line may extend from the shroud, the snorkel line capable of coupling with a sensor port in a tubular of the tubular string. The snorkel line may establish fluid communication between one of the sensors at least partially encompassed in the shroud and a corresponding sensor port of a tubular in the tubular string.

Abstract: A system and method for identifying a position of a sliding sleeve. The system may comprise an outer housing, a sliding sleeve within the outer housing, one or more magnetic switches, and a magnet. A method may comprise closing a switch within a magnetic switch disposed with a magnet, wherein the magnetic switch is disposed downhole, and transmitting an electric current into a first electric branch, wherein the electric current traverses through first electric branch, through the magnetic switch, to a second electric branch, and to a node. The method may further comprise measuring the electric current or voltage at the node and identifying a position of a sliding sleeve in an outer housing from the measurement. The method may further comprise calibrating a linear resistor position sensor assembly based at least in part on the measurement.

Abstract: A method includes removing a section of electrical insulation proximate an end of a tubing-encased conductor (TEC) to form an end of electrical insulation that is axially recessed relative to the end of the TEC. The method includes welding an end member to an outer surface of the outer tube at a weld joint that is axially between the end of the TEC and the end of the electrical insulation to protect the electrical insulation from heating damage from welding. The method includes replacing the section of electrical insulation proximate the end of the TEC by inserting a spacer into the end of the TEC between the outer tube and the electrical conductor after welding the end member to the outer surface of the TEC. A tool can be electrically connected to the electrical conductor and the tool can be welded to the end member.

Abstract: Systems and method for injection a chemical into a wellbore. A chemical injection system may comprise a first valve, a chemical line, a pilot line, an injection line, and a backflow prevention valve disposable in the injection line. A production fluid recovery system may comprise a chemical injection system, a first valve, a pilot line, an injection line, a backflow prevention valve, a production tree, a wellhead, and production tubing. A method for actuating a valve in a chemical injection system may comprise pushing a fluid into a chemical line, pressurizing a pilot line to open a first valve, pushing the fluid through the first valve, increasing pressure in the pilot line to open a second valve, pushing the fluid through the second valve, pushing the fluid through a chemical line, and injecting fluid into a wellbore from the chemical line.

Abstract: A holder for electronic shelf labels includes a channel having upper and lower ledges with upper and lower gripping flanges defining an engagement space into which a back of the electronic shelf label is mounted. A fin extends from a backplane of the channel, the fin having one side perpendicular to the backplane. The front of the upper and lower gripping flanges have inwardly-directed bevels. A breakaway guide is connected by a thinned portion to the backplane to engaging an edge of a mounting structure. The breakaway guide is removable following mounting of the channel.

Abstract: A wellbore communication system includes a section of downhole tubing positionable within a wellbore and a track mechanically coupleable to the section of downhole tubing. The wellbore communication system also includes a downhole communication device and an actuator mechanically coupleable to the downhole communication device and the track. In operation, the actuator is able to move the downhole communication device along the track.

Abstract: Systems and method for injection a chemical into a wellbore. A chemical injection system may comprise a first valve, a chemical line, a pilot line, an injection line, and a backflow prevention valve disposable in the injection line. A production fluid recovery system may comprise a chemical injection system, a first valve, a pilot line, an injection line, a backflow prevention valve, a production tree, a wellhead, and production tubing. A method for actuating a valve in a chemical injection system may comprise pushing a fluid into a chemical line, pressurizing a pilot line to open a first valve, pushing the fluid through the first valve, increasing pressure in the pilot line to open a second valve, pushing the fluid through the second valve, pushing the fluid through a chemical line, and injecting fluid into a wellbore from the chemical line.

Abstract: Various embodiments are provided for securing data compression in a computer environment are presented. Encryption cycles of a data compression stream may be optimized by applying a first type of encryption on a first section and a last section of compressed data and a second type of encryption on a middle section of compressed data, the first type of encryption containing key information relating to the middle section of the compressed data.

Abstract: Methods for forming stable, suspended nanomembranes are provided. Also provided are stable, suspended nanomembranes made using the methods and electronic devices that incorporate the stable, suspended nanomembranes as electronically active layers. The methods utilize stiction-aided nanomembrane flattening combined with ultraviolet (UV) radiation-induced adhesion enhancement.

Abstract: This disclosure presents an apparatus to improve the position sensing of a moving mechanism, such as a fluid valve located within a borehole. The apparatus can utilize a light beam or an optical fiber to measure changes in the position sensor. The smaller and lighter apparatus can improve the accuracy of the sensing mechanism. In addition, three systems are presented. The first system utilizes a vibration sensor, such as a MEMS, and an accelerometer to calculate changes in the mechanism position of the moving mechanism. The second system utilizes a radiation source and detector combination, along with a moving radiation shield to provide more accurate position sensing than conventional techniques. In addition, a lens-based system is presented, that when combined with a radiation source, can calculate position information by detecting the diffusion or dispersal of the radiation against a radiation detector.

Abstract: Transparent, electrically conductive vanadium oxide-based perovskite films and methods of making the vanadium oxide-based perovskite films are provided. Transparent conducting vanadate perovskites are made by forming a layer of amorphous vanadate perovskite precursor around a plurality of nanoscale, crystalline, perovskite oxide seeds and heating the layer of amorphous vanadate perovskite precursor at a temperature that favors lateral vanadate perovskite crystal growth from the perovskite oxide seeds over homogeneous crystal nucleation within the layer of amorphous vanadate perovskite precursor material. The crystallization processes can form the desired vanadate perovskite phase directly or via a transformation in a controlled gas environment from an initial crystallized vanadate perovskite phase that has a higher oxidation state.

Abstract: A holder for electronic shelf labels includes a channel having upper and lower ledges with upper and lower gripping flanges defining an engagement space into which a back of the electronic shelf label is mounted. A fin extends from a backplane of the channel, the fin having one side perpendicular to the backplane. The front of the upper and lower gripping flanges have inwardly-directed bevels. A breakaway guide is connected by a thinned portion to the backplane to engaging an edge of a mounting structure.

Abstract: A system is provided for providing power and/or communication to/from a downhole device by inductively coupling a coupling conductor within a receiver to a core conductor of a tubing encased conductor (TEC). The receiver has an elongated housing arranged physically proximate or touching an outer surface of the TEC. A coupling conductor is disposed within the housing, extends substantially parallel to a longitudinal axis of the housing, and further extends longitudinally and in close proximity to a core conductor housed within the TEC when the housing is arranged physically proximate or touching the outer surface of the TEC. This exposes the coupling conductor to a magnetic field formed externally to the TEC to excite a current in the coupling conductor. In one or more embodiments, the receiver further includes a coupling to electrically couple the downhole device to the coupling conductor and deliver the current to the downhole device.

Abstract: A method for crystallizing an amorphous multicomponent ionic compound comprises applying an external stimulus to a layer of an amorphous multicomponent ionic compound, the layer in contact with an amorphous surface of a deposition substrate at a first interface and optionally, the layer in contact with a crystalline surface at a second interface, wherein the external stimulus induces an amorphous-to-crystalline phase transformation, thereby crystallizing the layer to provide a crystalline multicomponent ionic compound, wherein the external stimulus and the crystallization are carried out at a temperature below the melting temperature of the amorphous multicomponent ionic compound. If the layer is in contact with the crystalline surface at the second interface, the temperature is further selected to achieve crystallization from the crystalline surface via solid phase epitaxial (SPE) growth without nucleation.

Abstract: A method includes deploying a tool in a well. The method also includes providing a conductive path with a segmentation module in the well. The method also includes conveying power and telemetry signals from a surface or uphole interface to the tool via the conductive path, where conveying the power and telemetry signals includes the segmentation module decoupling and later coupling power and telemetry signals conveyed along the conductive path.

Abstract: A casing has a plurality of joints of pipe joined by a plurality of casing collars, and an outer surface. A high-frequency alternating current (AC) source electrically is coupled to the casing. A coating of insulating material covers the entire outer surface of the casing. The coating has an opening that exposes a casing portion. The casing and the coating of insulating material define a capacitive electrode having an impedance Zf with a magnitude |Zf| at the frequency of operation f of the high-frequency AC source. Zf is low enough to allow current from the high-frequency AC source to be injected from the casing through the coating of insulating material into a surrounding formation. The casing portion has a resistance R to direct current (DC) with a magnitude that is very large compared to |Zf|.