Abstract: An apparatus for analyzing a core sample obtained from a subterranean formation includes a neutron generator, a plurality of detectors, a computed tomography scanner, an information processing device, and a transport system. The neutron generator can operate in a pulsed mode and emit neutrons into the core sample.

Abstract: In various embodiments, apparatus and methods are provided to determine formation resistivity associated with a well. Measurements taken using sub-arrays of a tool at different distances of investigation can be used to determine formation resistivity, where the sub-arrays are arranged to make azimuthal related measurements. Separations readings related to resistivity can be generated from signals received from different directions and can be analyzed to characterize validity of a measurement reading. Additional apparatus, systems, and methods are disclosed.

Abstract: An antenna system for a downhole tool has an antenna that is configured to operate at a plurality of frequencies. The tuning circuit is on the interior of the tool and shielded from borehole fluids. The tuning circuit is coupled to the antenna by a transformer circuit.

Abstract: In various embodiments, apparatus and methods are provided to determine formation resistivity associated with a well. Measurements taken using sub-arrays of a tool at different distances of investigation can be used to determine formation resistivity, where the sub-arrays are arranged to make azimuthal related measurements. Separations readings related to resistivity can be generated from signals received from different directions and can be analyzed to characterize validity of a measurement reading. Additional apparatus, systems, and methods are disclosed.

Abstract: An antenna system for a downhole tool has an antenna that is configured to operate at a plurality of frequencies. The tuning circuit is on the interior of the tool and shielded from borehole fluids. The tuning circuit is coupled to the antenna by a transformer circuit.

Abstract: A unified circuit without using a relay is proposed to resonate an antenna at more than two frequencies. The use of such analog IC switches are common place for transceiver applications in high RF frequencies (500 MHz and above). However, the use of selectively tuned antennas has for the most part been accomplished by the use of latching relays or fixed value components. The IC switch allows for not only the functionality of a single antenna to be either a transmitter and/or a receiver, but also allows, by adding additional switches to select any number of frequencies to resonate the antenna. This frequency resonation could be at fixed frequency points or sweep in either linear or logarithmic steps. The component selection of capacitors for either method would be controlled by a DSP or other microcontroller device. In one embodiment, an antenna for a downhole measurement tool is provided with a tuning circuit couple by a transformer to at least one antenna.

Abstract: A method of automated parking assistance. A logic unit reads identification information from a transponder attached to a vehicle and determines the current position of the vehicle by measuring distances between the transponder and multiple stationary sensor devices. A pre-defined parking location is stored by pressing a single button. If the current position of the vehicle is not equal to the pre-defined parking location when the vehicle subsequently approaches, the logic unit determines one or more directions in which the current position of the vehicle must be adjusted to reduce the distance between the current position of the vehicle and the pre-defined parking location. A display device displays one or more guidance signals corresponding to the one or more directions in which the current position of the vehicle must be adjusted. If the current position of the vehicle is equal to the pre-defined parking location, a stop signal is displayed.

Abstract: A method of automated parking assistance. A logic unit reads identification information from a transponder attached to a vehicle and determines the current position of the vehicle by measuring distances between the transponder and multiple stationary sensor devices. A pre-defined parking location is stored by pressing a single button. If the current position of the vehicle is not equal to the pre-defined parking location when the vehicle subsequently approaches, the logic unit determines one or more directions in which the current position of the vehicle must be adjusted to reduce the distance between the current position of the vehicle and the pre-defined parking location. A display device displays one or more guidance signals corresponding to the one or more directions in which the current position of the vehicle must be adjusted. If the current position of the vehicle is equal to the pre-defined parking location, a stop signal is displayed.