Abstract: A dielectric logging tool for use in a borehole that penetrates a subsurface formation, includes: at least one wall-contacting face with one or more embedded microstrip antennas including a transmit antenna; an oscillator that supplies a transmit signal; a coherent receiver that measures the one or more scattering coefficients; and a processor that derives a formation property from the one or more scattering coefficients. The tool may be conveyed along a borehole, with the scattering coefficients and derived formation property values associated with tool position and orientation to provide a permittivity log.

Abstract: An offshore measured or logging-while drilling electromagnetic telemetry system includes a bottomhole assembly having a transmitter to communicate one or more electromagnetic telemetry signals. A subsea telemetry cable is positioned on a sea floor to receive the telemetry signals. The subsea telemetry cable is coupled to an umbilical cable extending to a surface communication unit positioned at the sea surface. Signals received by the subsea telemetry cable are transmitted to the surface communication unit for further processing.

Abstract: A logging tool having a transmitter and receiver is positioned in a geological formation. While the logging tool is static, a transmit input signal is applied to a transmitter to cause the transmitter to induce a transmit output signal in the form of an electromagnetic field into a formation. While the logging tool is static, a formation signal is received based on the transmit output signal. The formation signal may be a voltage indicative of an induced polarization in the formation based on the transmit output signal. A complex resistivity of the formation is determined based on the formation signal.

Abstract: A wind-energy-power-generating device is disclosed for flotation on a body of water. The device includes a turbine assembly having rotor blades rotating about a rotation axis for harnessing kinetic energy from an airflow. The device includes a cowl at least partially surrounding said turbine assembly and defining an airflow passageway between a cowl inlet and outlet, having an inlet and outlet axis, respectively. The inlet and outlet axis intersect at a redirect angle. The device includes a base platform adapted to support the turbine assembly and cowl on the water. The cowl is rotatably mounted on the base platform such that it is rotatable around the turbine assembly to self-align with a wind direction. Stabilising arms extend from the base platform and are spaced circumferentially around a platform axis, to stabilise it on the water. A wind-energy-power-generating device secured to the ground or other fixed non-floating structure is also described.

Abstract: An induction transceiver system includes a magnetic core and an insulator surrounding the magnetic core. The system further includes a cylindrically-shaped sleeve substantially surrounding the insulator. The sleeve includes a gap along the length of the sleeve. A potential difference is measured across the gap when receiving, and a current is applied across the gap when transmitting.

Abstract: Systems, methods and apparatuses for measuring properties of a borehole formation and generating an image of the formation. The method comprises selecting a direction for transmission of an electromagnetic signal, wherein the selection includes altering an electromagnetic coupling between an active element of a first device and at least one passive element of the first device. An electromagnetic signal can be transmitted, by the active element of the first device, into a borehole formation. The electromagnetic signal can subsequently be received by a second device. Formation properties can be determined from the received signal and an image of the formation can be generated.

Abstract: The disclosure relates generally to the inversion of geophysical and/or logging measurements for formation evaluation and monitoring. The disclosure may be related to methods of deconvolution and/or inversion of piecewise formation properties. A method for formation evaluation from a downhole tool may comprise disposing a downhole tool into a wellbore, broadcasting a signal into a formation penetrated by the wellbore, recording the signal from the formation with at least one receiver disposed on the downhole tool, computing an objective function, and determining formation properties by minimizing the objective function.

Abstract: A method includes activating a first electromagnetic source at a first frequency, acquiring a first set of electromagnetic measurements from a first fiber optic electromagnetic sensor in a first well, wherein the first fiber optic electromagnetic sensor is in electromagnetic communication with the first electromagnetic source. The method also includes acquiring a second set of electromagnetic measurements from a second fiber optic sensor in a second well, wherein the second fiber optic sensor is in electromagnetic communication with the first electromagnetic source. The method also includes determining a formation property based on the first set of electromagnetic measurements and the second set of electromagnetic measurements.

Abstract: A system for locating water floods, in some embodiments, comprises: multiple transducers for coupling to a borehole casing to inject current into a formation within which the casing is disposed; and multiple electrodes, each of the electrodes coupled to a different one of the multiple transducers when coupled to the casing, wherein each of the multiple transducers is used to determine a potential between the casing and a corresponding one of the multiple electrodes to which the transducer is coupled, wherein the potentials from the multiple transducers are used to determine a water flood location.

Abstract: The invention provides an animal treatment block for applying a treatment to an animal against the action of biting insects, including a body including a carrier medium, a structural means, incorporated into the carrier medium and an active ingredient incorporated into the carrier medium. The body, including the carrier medium with incorporated active ingredient and structural means, may be mounted such that an animal can readily contact the body, whereby the active ingredient is applied to the animal in a controlled manner, through application of the carrier medium. The invention also relates to variants thereof and methods of use.

Abstract: A through-casing formation monitoring system may include a casing string positioned within a wellbore, a power source electrically coupled to a first transmitter configured to produce a magnetic field, a magnetic induction sensor positioned within the casing string such that the magnetic induction sensor allows a continued operation of the wellbore, a fiber optic cable coupled to an electro-optical transducer within the magnetic induction sensor, and an optical interrogation system configured to receive measurements from the magnetic induction sensor via the fiber optic cable.

Abstract: An apparatus for assembling a non-pneumatic tire is provided that includes a plurality of spokes attached to a hub, a frame, and a plurality of mechanical elements disposed between and engaging successive spokes. The spokes extend to locations radially inward and radially outward of the locations of engagement with the mechanical elements. A radial movement member moves the mechanical elements in a radial direction. The spokes are compressed by the mechanical elements, and retaining elements engage the mechanical elements to hold them and the spokes in this position. Release by the retaining elements and outward radial movement of the mechanical elements urge the spokes toward a shear band that is outward in the radial direction. Adhesive located between the spokes and the shear band is pressed there between through this urging to result in the spokes being attached to the shear band in a state of pre-compression.

Abstract: Methods for improved cultivation media and culture conditions for Trueperella pyogenes are disclosed herein. Also disclosed are improved methods for the isolation and purification of pyolysin from Trueperella pyogenes.

Abstract: A distributed acoustic system (DAS) with an interrogator, an umbilical line attached at one end to the interrogator, and a downhole fiber attached to the umbilical line at the end opposite the interrogator. A method for optimizing a sampling frequency may begin with identifying a length of a fiber optic cable connected to an interrogator, identifying one or more regions on the fiber optic cable in which a backscatter is received, and optimizing a sampling frequency of a distributed acoustic system (DAS) by identifying a minimum time interval that is between an emission of a light pulse such that at no point in time the backscatter arrives back at the interrogator that corresponds to more than one spatial location along a sensing portion of the fiber optic cable.

Abstract: The invention relates to a ducted wind turbine having a turbine rotor assembly which extracts kinetic energy from air flowing there past. The rotor assembly includes a plurality of rotor blades having rotor tips at their outermost ends which define a rotor tip sweep circumference. A duct assembly at least partially surrounds said rotor tip sweep circumference and a base platform supports the ducted wind turbine. The duct assembly is mounted on the base platform by way of a weathervane bearing arrangement such that the duct assembly may weathervane around the turbine rotor assembly in response to changes in wind direction. A semi-submersible support platform, wave energy capture apparatus, torsional bearing mechanism and a latticework wind turbine tower associated with the ducted wind turbine are also provided.

Abstract: An illustrative permanent electromagnetic (EM) monitoring system including a casing string positioned inside a borehole penetrating a formation, a source electrode attached to the casing string, an electrically insulating layer on an outer surface of the source electrode that provides a capacitive coupling of the source electrode to the formation, a power supply coupled to the source electrode which injects electrical current into the formation via the capacitive coupling, and a processing unit that determines a formation property based on at least the current received by a return electrode.

Abstract: A data seismic sensing system and method for obtaining seismic refraction data and tomography data. The system may comprise a subsurface sensor array, wherein the subsurface sensor array is a fiber optic cable disposed near a wellbore, a seismic source, wherein the seismic source is a truck-mounted seismic vibrator comprising a base plate, and a surface sensor array, wherein the surface sensor array is coupled to the seismic source. The method may comprise disposing a surface sensor array on a surface, disposing a subsurface sensor array into a wellbore, activating a seismic source, wherein the seismic source is configured to create a seismic wave, recording a reflected seismic wave with the surface sensor array and the subsurface sensor array, and creating a seismic refraction data and a seismic tomography data from the reflected seismic wave.

Abstract: A method of forming a short-hop communications transceiver includes creating, in a conductive tool body, an annular cavity that is electromagnetically coupled to an external tool surface by a surface gap that encircles the tool body. The method further includes positioning material having high magnetic permeability in the annular cavity. The method further includes coupling electrical leads from an electronics module to opposite sides of the surface gap. The method further includes operating the electronics module to perform short-hop telemetry by driving or sensing a voltage signal across the surface gap.

Abstract: Systems and methods for active ranging-while-drilling (ARWD) for collision avoidance and/or well interception. A method for ranging while drilling may comprise employing a rotating magnet assembly to induce a changing magnetization and/or electric current in a conductive member disposed in a target wellbore, wherein the rotating magnet assembly may be employed in a second wellbore; measuring at least one component of a magnetic gradient tensor using receivers; and calculating a relative location of the conductive member based at least in part on the measurements of the at least one component of the magnetic gradient tensor.

Abstract: An apparatus for assembling a non-pneumatic tire that includes a base and a plurality of elements that move relative to the base. The plurality of elements have a central axis, and the elements are disposed in a circumferential direction around the central axis and move in a radial direction towards and away from the central axis. A radial movement member, hub, and a plurality of spokes are also present. Each one of the spokes is disposed between adjacent ones of the elements. The elements and the spokes are moved inwards in the radial direction by the radial movement member towards the central axis so that the spokes are moved in the radial direction towards the hub. Adhesive engages the spokes and the hub at an attachment location of the spokes and the hub.