Abstract: A system of translatable electro acoustic technology (EAT) modules for deployment along an oil or gas wellbore casing includes: a wireline/slickline optical distributed acoustic sensing (DAS) cable deployed from the surface into the casing and connected to a surface interrogator; a tractor attached to the downhole end of the wireline/slickline optical distributed acoustic sensing (DAS) cable; and one or more EAT sensing modules that can be coupled to or decoupled from the wireline/slickline optical distributed acoustic sensing (DAS) cable at pre-selected locations and can either be coupled to or decoupled from the casing of the wellbore or be allowed to reposition along the wellborn casing, wherein the one or more EAT sensing modules can conduct multiple measurements and communicate the results via the wireline/slickline optical distributed acoustic sensing (DAS) cable to the surface interrogator.

Abstract: A new approach to pipeline pigging using electro acoustic technology (EAT) is described in which the data from a pigging operation can be transmitted in real time to optical fiber on the outside of the pipeline and detected using distributed acoustic sensing (DAS) techniques, including the precise location, velocity and acceleration of the pig using the DAS technique. Thus the sensor data can easily be mapped to its precise location in real time. The EAT sensors use the DAS fiber as a data transmission line by converting electrical or optical signals to acoustic signals which excite the fiber and can be detected by an interrogator at the pig launch site.

Abstract: A new approach to pipeline pigging using electro acoustic technology (EAT) is described in which the data from a pigging operation can be transmitted in real time to optical fiber on the outside of the pipeline and detected using distributed acoustic sensing (DAS) techniques, including the precise location, velocity and acceleration of the pig using the DAS technique. Thus the sensor data can easily be mapped to its precise location in real time. The EAT sensors use the DAS fiber as a data transmission line by converting electrical or optical signals to acoustic signals which excite the fiber and can be detected by an interrogator at the pig launch site.

Abstract: A system for launching or retrieving wireline electro acoustic technology (EAT) sensor assemblies in a downhole wellbore comprises an EAT launcher/retriever section and an EAT sensor assembly for placement in the EAT launcher/retriever section. The EAT launcher/retriever section comprises an external high pressure housing, attachment means at each end of the external high pressure housing, and a wedge shaped internal retractable launcher plate with an opening on one side to allow a fiber based wireline cable to pass through the EAT launcher section. The EAT sensor assembly comprises a center section comprising sensors and two end sections, each end section with a set of extendable grippers to grip a fiber based wireline cable, wherein the center section and both end sections comprise a V groove that allows the EAT sensor assembly to be centered on the fiber based wireline cable.

Abstract: A system and method for enabling inductive charging through downhole casings for electro acoustic technology devices.

Abstract: The present invention relates to a system for vortex energy harvesting for downhole applications and a method thereof, the system comprising: one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing system connected back to a surface distributed acoustic sensing interrogator; and one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in the downhole application.

Abstract: A system is described for reliably detecting leaks in a distributed manner in intermittent use pipelines by making use of thermal or acoustic events triggered by the leak. The system can work in pressurized or unpressurized pipelines and in high flow or no flow conditions.

Abstract: A device is described for downhole seismic sensing utilizing electro acoustic technology in conjunction with moveable downhole seismic sources.

Abstract: A device and method is described for either launching or retrieving wireline electro acoustic technology (EAT) sensor assemblies downhole.

Abstract: A system and method for monitoring oil flow rates at multiple points in production wells using a flow sensing fiber optic cable. An illustrative system embodiment includes: a fiber optic sensing system housed within a tube suitable for a downhole environment; and a flow to signal conversion device attached to the tube and deployed in the oil flow.

Abstract: The present invention relates to a system for vortex energy harvesting for downhole applications and a method thereof, the system comprising: one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing system connected back to a surface distributed acoustic sensing interrogator; and one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in the downhole application.

Abstract: A system and method for enabling inductive charging through downhole casings for electro acoustic technology devices.

Abstract: A system and method for obtaining real time down hole flow measurements and proppant concentrations between perforations and/or perforation clusters during hydraulic fracturing in multistage stimulated wells.

Abstract: A device is described for measuring downhole flow rate, density and fluid fractions of oil-gas-water mixtures in a production string.

Abstract: A system and method for monitoring oil flow rates at multiple points in production wells using a flow sensing fiber optic cable. An illustrative system embodiment includes: a fiber optic sensing system housed within a tube suitable for a downhole environment; and a flow to signal conversion device attached to the tube and deployed in the oil flow.

Abstract: An optical waveguide pumping method can include pumping a liquid fluid through a conduit, thereby pumping an optical waveguide into the conduit, and operating a fluid recovery device, so that fluid pressure in the conduit is less than a vapor pressure of the fluid and/or fluid temperature in the conduit is reduced from above a boiling point temperature of the fluid to below the boiling point temperature of the fluid. An optical waveguide pumping system can include a pump which pumps a liquid fluid into a conduit and thereby pumps an optical waveguide into the conduit, and a fluid recovery device connected to the conduit. The fluid recovery device reduces fluid pressure in the conduit to below a vapor pressure of the fluid and/or reduces fluid temperature in the conduit from above a boiling point temperature of the fluid to below the boiling point temperature of the fluid.

Abstract: An optical waveguide pumping method can include pumping a liquid fluid through a conduit, thereby pumping an optical waveguide into the conduit, and operating a fluid recovery device, so that fluid pressure in the conduit is less than a vapor pressure of the fluid and/or fluid temperature in the conduit is reduced from above a boiling point temperature of the fluid to below the boiling point temperature of the fluid. An optical waveguide pumping system can include a pump which pumps a liquid fluid into a conduit and thereby pumps an optical waveguide into the conduit, and a fluid recovery device connected to the conduit. The fluid recovery device reduces fluid pressure in the conduit to below a vapor pressure of the fluid and/or reduces fluid temperature in the conduit from above a boiling point temperature of the fluid to below the boiling point temperature of the fluid.

Abstract: A system and method for monitoring oil flow rates at multiple points in production wells using a flow sensing fiber optic cable. An illustrative system embodiment includes: a fiber optic sensing system housed within a tube suitable for a downhole environment; and a flow to signal conversion device attached to the tube and deployed in the oil flow.

Abstract: An immersive cyberspace system is presented which provides visual, audible, and vibrational inputs to a subject remaining in neutral immersion, and also provides for subject control input. The immersive cyberspace system includes a relaxation chair and a neutral immersion display hood. The relaxation chair supports a subject positioned thereupon, and places the subject in position which merges a neutral body position, the position a body naturally assumes in zero gravity, with a savasana yoga position. The display hood, which covers the subject's head, is configured to produce light images and sounds. An image projection subsystem provides either external or internal image projection. The display hood includes a projection screen moveably attached to an opaque shroud. A motion base supports the relaxation chair and produces vibrational inputs over a range of about 0-30 Hz. The motion base also produces limited translation and rotational movements of the relaxation chair.

Abstract: An enclosed structure is provided for use with a refrigerator having a door assembly. The enclosed structure preferably contains superinsulation materials and a plurality of matching drawers. The enclosed structure preferably includes corner joints which minimize thermal energy transfer between adjacent superinsulation panels. The refrigerator may include a cooling system having a thermoelectric device for maintaining the temperature within the refrigerator at selected values. If desired, a fluid cooling system and an active gasket may also be provided between the door assembly and the enclosed structure. The fluid cooling system preferably includes a second thermoelectric device to maintain the temperature of fluid flowing through the active gasket at a selected value. The drawers associated with the refrigerator may be used for gathering, processing, shipping and storing food or other perishable items.