Abstract: Apparatuses and methods for providing voltage to a metal layer of an optical cable are provided. The metal layer may be configured to provide an electric shock to an animal upon contact.

Abstract: A method, system, and device for terahertz spectroscopy to analyze a sample. The device comprises a transmitter, a waveguide, a receiver, and a processor. The transmitter generates electromagnetic (EM) radiation in a terahertz frequency band from about 0.1 terahertz to about 10 terahertz. The waveguide propagates the EM radiation generated from the transmitter and houses the sample to attenuate the EM radiation. The receiver is in communication with the waveguide and generates a signal in response to EM radiation propagating in the waveguide. The processor analyzes the signal to identify a parameter associated with the sample.

Abstract: A plug may be deployed within a pipeline along with a fluid. The plug is coupled to a fiber optic line dispensed from fiber optic dispenser located outside or within the pipeline. The plug may transmit a signal via the fiber optic line that is indicative of the location of the plug within the pipeline. The signal may comprise light pulses associated with the traversal of a pipeline joint by the plug. The location may allow the plug to be reclaimed efficiently and economically should the plug become lodged within the pipeline. The plug may communicate other measurement information via the fiber optic line and this information may be used to adjust operational parameters associated with the pipeline.

Abstract: The present disclosure provides for a pig tracking and locating system that is able to pinpoint the exact location of a pig so that if the pig becomes stuck, it can be more efficiently located and retrieved without excessive searching. A representative system includes an unmanned underwater vehicle that travels with or very near the pig as it progresses through a pipeline, and gathers and stores information transmitted by the pig. This information may include location data that can be transmitted in the event the pig becomes stuck.

Abstract: Systems and methods for terahertz modulation in a terahertz frequency band from about 0.1 terahertz to about 10 terahertz propagating in a wellbore intersecting a subterranean earth formation. A transmitter generates the EM radiation in the terahertz frequency band. A modulator located in the wellbore receives the EM radiation and generates an amplitude modulated signal with the EM radiation.

Abstract: A borehole fluid imaging system includes a plurality of radiation sources located circumferentially around the borehole. A plurality of radiation detectors are located circumferentially around the borehole. The plurality of radiation detectors detect the radiation transmitted by each of the respective ones of the plurality of radiation sources. A controller is coupled to the plurality of radiation detectors to determine an attenuation of the radiation at the plurality of detectors and generate an image of the fluid in response to the attenuation of the radiation.

Abstract: A borehole fluid imaging system includes a plurality of radiation sources located circumferentially around the borehole. A plurality of radiation detectors are located circumferentially around the borehole. The plurality of radiation detectors detect the radiation transmitted by each of the respective ones of the plurality of radiation sources. A controller is coupled to the plurality of radiation detectors to determine an attenuation of the radiation at the plurality of detectors and generate an image of the fluid in response to the attenuation of the radiation.

Abstract: A system, method, and device for determining volume concentration with diffraction of electromagnetic radiation. A device for determining a volume concentration of a fluid in a sample comprises a transducer, a transmitter, a detector, and a processor. The transducer generates a standing acoustic wave through the sample. The transmitter emits electromagnetic (EM) radiation into the sample such that the EM radiation is diffracted by the sample. The detector is responsive to the diffracted EM radiation and generates a signal indicative of a wavelength of an acoustic wave corresponding to the standing acoustic wave. The processor analyzes the signal to determine the volume concentration of the fluid in the sample.

Abstract: Apparatuses and methods for providing voltage to a metal layer of an optical cable are provided. The metal layer may be configured to provide an electric shock to an animal upon contact.

Abstract: A device for securing a telemetry segment in a drill pipe includes a pair of diametrically opposed arcuate arms for outwardly engaging an interior wall of the drill pipe, the diametrically opposed arcuate arms being interconnected to one another by a radially inwardly projecting lobe section for capturing the telemetry segment between the lobe section and the interior wall of the drill pipe.

Abstract: A pipe has a longitudinal axis. A flex board extends along the longitudinal axis within the pipe and curls around the longitudinal axis. A cross-section of the flex board perpendicular to the longitudinal axis has a flex-board curve shape that has a first section on a first side of a line perpendicular to the longitudinal axis and a second section on a second side of the line perpendicular to the longitudinal axis. The first section has a first section shape and the second section has a second section shape. A first conductive stripe is coupled to the flex board, extends along the longitudinal axis, and follows the contour of the first section of the flex board. A second conductive stripe is coupled to the flex board, extends along the longitudinal axis, and follows the contour of the second section of the flex board.

Abstract: An example telemetry system for downhole operations in a subterranean formation comprises an electromagnetic (EM) radiation source and an EM radiation detector. A waveguide may be coupled to the EM radiation source and the EM radiation detector. A frequency multiplier may be coupled to the waveguide and positioned within a borehole in the subterranean formation.

Abstract: A quasi-optical waveguide apparatus includes a waveguide having a chamber formed by a substantially cylindrical body and configured to propagate terahertz radiation. A plurality of windows are included wherein each window is coupled to a respective end of the waveguide such that the chamber is substantially sealed from the ambient atmosphere. The plurality of windows are transparent to the terahertz radiation.

Abstract: A quasi-optical waveguide apparatus includes a waveguide having a chamber formed by a substantially cylindrical body and configured to propagate terahertz radiation. A plurality of windows are included wherein each window is coupled to a respective end of the waveguide such that the chamber is substantially sealed from the ambient atmosphere. The plurality of windows are transparent to the terahertz radiation.

Abstract: The present disclosure provides for a pig tracking and locating system that is able to pinpoint the exact location of a pig so that if the pig becomes stuck, it can be more efficiently located and retrieved without excessive searching. A representative system includes an unmanned underwater vehicle that travels with or very near the pig as it progresses through a pipeline, and gathers and stores information transmitted by the pig. This information may include location data that can be transmitted in the event the pig becomes stuck.

Abstract: A safety waveguide apparatus includes a waveguide segment body sealed by a respective dielectric plug on each end of the waveguide body. The waveguide segment body, or at least one of the dielectric plugs, are configured to divert an oil flow from within the waveguide segment body.

Abstract: An example telemetry system for downhole operations in a subterranean formation comprises an electromagnetic (EM) radiation source and an EM radiation detector. A waveguide may be coupled to the EM radiation source and the EM radiation detector. A frequency multiplier may be coupled to the waveguide and positioned within a borehole in the subterranean formation.