A method and system for optimizing RF energy delivery to a tissue ROI with a thermoacoustic system includes directing with a RF applicator, RF energy pulses into the tissue ROI having an object of interest and a reference separated by a boundary; detecting with a thermoacoustic transducer, a multi-polar thermoacoustic signal generated at the boundary in response to the RF energy pulses and processing the multi-polar acoustic signal to determine a peak-to-peak amplitude; detecting with the thermoacoustic transducer, an artifact multi-polar thermoacoustic signal generated at a location other than the boundary and processing it to determine a peak-to-peak amplitude; utilizing an electromagnetic model coupled with a model of patient anatomy to place dielectric or conducting materials near the thermoacoustic transducer or the RF applicator to optimize a signal-to-noise ratio of the multi-polar thermoacoustic signal generated at the boundary or minimize the artifact multi-polar thermoacoustic signal generated at a location other than the boundary; and directing with the RF applicator, RF energy pulses into the ROI for a thermoacoustic measurement and determine a parameter of the object of interest.

Temperature data collected from a distributed temperature sensing system may be used to prepare a temporal thermal profile of the wellbore. The temporal thermal profile may be used to determine a generalized heat transfer coefficient (k) and/or a generalized geothermal profile (T.sub.ae). The temporal thermal profile and the generalized heat transfer coefficient (k) and/or the generalized geothermal profile (T.sub.ae) may be used to estimate thermal properties of a wellbore, such as well as fluid and flow characteristics. A heat of hydration index may also be determined based on the temporal thermal profile.

A system includes: a cementing tool positionable within a casing string of a wellbore; a distributed temperature sensing (DTS) system comprising: a fiber optic cable coupled to the cementing tool; and a DTS interrogator positionable at a surface of the wellbore for transmitting an optical signal through the fiber optic cable and determining from a reflected optical signal a plurality of temperatures along the fiber optic cable; a fiber reel for dispensing the fiber optic cable from a first end of the fiber optic cable in response to a tension in the fiber optic cable as the cementing tool travels down the casing string behind a cement composition; and a processor in communication with the DTS system and configured to monitor the plurality of temperatures along the fiber optic cable while the cement composition cures.

Examples are disclosed that relate to mapping a plurality of temperatures across an area. One example provides a temperature sensing device including a flexible support and a temperature sensing structure having a plurality of individually readable temperature sensing junctions. The temperature sensing structure includes a line of a first conductive material extending across an area of the support, and a plurality of lines of a second conductive material each intersecting the line of the first junction material at a corresponding sensing junction.

Embodiments relate to a method and apparatus for investigating the uniformity of concrete and/or grout. Embodiments can identify the existence of one or more anomalies in the uniformity of concrete and/or grout, and/or determine or estimate the size, shape, type, and/or location of one or more anomalies in the uniformity of concrete and/or grout. Embodiments can utilize a string of temperature measuring sensors placed within one or more access bore(s), such as tube(s), positioned at least partially within the concrete and/or positioned proximate the concrete. The measurements obtained from the temperature measuring sensors can then be used to assist in the identification of existence of, size of, type of, shape of, and/or location of anomalies in the concrete and/or grout.

Examples are disclosed that relate to mapping a plurality of temperatures across an area. One example provides a temperature sensing device including a flexible support and a temperature sensing structure having a plurality of individually readable temperature sensing junctions. The temperature sensing structure includes a line of a first conductive material extending across an area of the support, and a plurality of lines of a second conductive material each intersecting the line of the first junction material at a corresponding sensing junction.

A tracking and accountability system and apparatus is provided and comprises a command unit and processing unit coupled to a wireless communication network, a first tracking device having a first mobile transceiver in communication with the wireless communication network and coupled to a first set of identification data of a first individual and being operative to transmit signals representing the first individual's location over the wireless communication network to the processing unit, and a second tracking device having a second mobile transceiver and coupled to a second set of identification data of a second individual and being operative to transmit signals representing the second individual's location (i) to the processing unit over the wireless communication network if the second tracking device is within a first distance; and (ii) to the first tracking device if the second tracking device is within the first distance to the first tracking device.

A space temperature scanner capable of measuring a temperature distribution in a space without requiring troublesome device installation work or complex data processing is disclosed. The space temperature scanner (scanner 100) of the present invention includes a bar-shaped portable support member 110, attachment units 120 arranged along a straight line on the support member 110, and thermocouple units 130 that can be removably attached to the attachment units 120. The thermocouple units 130 can be selectively attached to some or all of the attachment units 120 when temperature measurement is to be performed.

A method of optimizing production of a hydrocarbon-containing reservoir by measuring low-frequency Distributed Acoustic Sensing (LFDAS) data in the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow and simultaneously measuring Distributed Temperature Sensing (DTS) data from the well during a time period of constant flow and during a time period of no flow and during a time period of perturbation of flow. An initial model of reservoir flow is provided using the LFDAS and DTS data; the LFDAS and DTS data inverted using Markov chain Monte Carlo method to provide an optimized reservoir model, and that optimized profile utilized to manage hydrocarbon production from the well and other asset wells.

A plurality of temperature sensors are disposed on a substrate and spaced from each other on a plurality of concentric virtual rings. The plurality of temperature sensors are each connected to one of a plurality of first common lines and one of a plurality of second common lines. The plurality of first common lines each include a first annular line portion located along the plurality of virtual rings, and a first connection line portion connecting the first annular line portion to at least one of the plurality of temperature sensors. The first annular line portion of each of the plurality of first common lines is located on an outer side of the plurality of virtual rings.