Abstract: In order to simulate the inputs from a downhole sensor (DHS), RTD type sensors are typically employed, externally heated, and the input provided into an interface unit. At best such an approach provides a solution that is cumbersome and not reliably repeatable. Such temporary inputs seldom provide the equivalent communications protocol verification between the surface controller of the DHS and the external communications device. DHS units commercially available use different register addresses for the requested data, as well as a variation in the number of parameters expected from the DHS itself. The number of parameters may range from 3 to 7 based on the vendor unit selected. In the proposed system, a number of potentiometers are used to provide a variable signal level to the microprocessor, acting as variable parameters from the DHS sensor, the settings of which can be repeated for reliable test or regression test results.

Abstract: In order to emulate the inputs from a DHS, RTD type sensors are typically employed, externally heated, and the input provided into an interface unit. At best such an approach provides a stop-gap solution that is cumbersome and not reliably repeatable. Such temporary inputs seldom provide the equivalent communications protocol verification between the surface controller of the DHS and the external communications device. Each DHS commercially available also uses different MODBUS register addresses for the requested data, as well as a variation in the number of parameters expected from the DHS itself, ranging from 3 to 7, depending on the vendor of choice. In this new design, a number of potentiometers are used to provide a variable signal level to the microprocessor, acting as variable parameters from the downhole sensor, the settings of which can be repeated for reliable test results.

Abstract: An application program to provide control for a radio frequency link for towed vehicle light and brake control, matching conditions of the towing vehicle. These include turn signal, brake signal, and running lights, and an analog signal for the towed vehicle electric brakes. The towing vehicle contains signal sensors and conditioners, which are converted into a data string, modulated, and transmitted using a continuous wave radio frequency carrier. The towed vehicle contains a receiver and demodulator, which extracts the data, and passes it to the towed vehicle microprocessor. The microprocessor also converts the electric brake digital data into an analog signal to apply the towed vehicle electric brake.

Abstract: An agitator assembly for use in a gas separator includes a central hub and at least one blade affixed to the central hub. The blade includes a leading end, a trailing end, a first curved portion adjacent to the leading end and a second curved portion adjacent to the trailing end. In a particularly preferred embodiment, the first and second curved portions are substantially parabolic and have foci on opposite sides of the blade.

Abstract: A well fluid homogenization device for use in a pumping system configured to recover fluids from a well includes a central hub and a plurality of posts extending from the central hub. The well fluid homogenization device is configured to rotate with a drive shaft to homogenize well fluid as the well fluid passes through a pumping system. The well fluid homogenization device is well-suited to be incorporated within gas separators and pump assemblies.

Abstract: Apparatus, systems and methods are provided for transmission of optical signals through a wellbore whereby optic fibers are protected from exposure to harsh downhole fluids and conditions. The system comprises a power cable assembly running down hole from the surface and comprising both electrical leads and at least one fiber-optic lead, an electric submersible motor apparatus having optic fibers and optic fiber leads as an integral part of the motor and internal to the motor casing, and a connection(s) between the optic fibers internal to the motor casing and downhole sensors and other equipment requiring optical communication.