Embodiments of the present invention provide systems and methods for tagging and acoustically characterizing containers.

A downhole fluid analysis tool includes a tool body, a plurality of arms coupled to the tool body and movable between a retracted position and one or more expanded positions away from a central axis of the tool body. The plurality of arms are at an angle with respect to the central axis, the angle being different in each of the one or more expanded positions. The tool further includes a plurality of fluid sensors coupled to the plurality of arms. A fluid sensor of the plurality of the fluid sensors is movably coupled to an arm of the plurality of arms and configured to pivot across a plurality of angles with respect to the arm. The angle of the fluid sensor with respect to the arm is associated with the angle of the arm with respect to the central axis of the tool body.

A downhole fluid analysis device includes a piezoelectric helm resonator, a spectroscopy sensor positioned symmetrically with respect to the piezoelectric helm resonator in at least one direction, and a circuit comprising a first terminal and a second terminal electrically coupled to a power supply. The piezoelectric helm resonator and the spectroscopy sensor are electrically coupled in parallel between the first and second terminals. The power supply drives the piezoelectric helm resonator with a voltage of a first polarity and the spectroscopy sensor with a voltage of a second polarity. The circuit includes at least one current flow control device in the circuit configured to prevent both the piezoelectric helm resonator and the spectroscopy sensor from being powered simultaneously.

The invention concerns a Thickness Shear Mode (TSM) biosensor (1) which comprises an ex vivo living skin explant (2), the skin explant (2) comprising at least one of the skin layers among: hypodermis, dermis (2A), epidermis (2B) and the stratum corneum (2C), a TSM transducer (3) which comprises: an AT cut quartz resonator 3C which has two opposite exterior surfaces (3A,3B), and two conducting electrodes (4A, 4B), each conducting electrode being deposited on one of the two exterior surfaces (3A,3B), the TSM transducer (3) allowing to determine micro rheological characteristics of the living skin explant (2) by piezoelectric transducing using shear waves, the TSM transducer (3) presenting: measuring means (30), monitoring and calculating means (31) which monitor an evolution in time of an electrical response of the living skin explant (2), and which calculate in time, from the electrical response, micro rheological characteristics of the living skin explant (2), a bottom surface of the skin explant (2) being in contact with the TSM transducer (3), a top surface of the skin explant (2) being in contact with air.

Embodiments of the present invention provide systems and methods for tagging and acoustically characterizing containers.

The invention provides embodiments of an apparatus and for improved, higher quality and higher resolution acoustic impedance scanning of an object through a barrier. Such acoustic impedance scanning can be employed to obtain biometric information of a person via fingerprint pattern.

A method to create a parameter map depicting acoustical and mechanical properties of biological tissue at microscopic resolutions to identify potential health related issues. The method including mounting the biological tissue on a substrate, raster scanning the biological tissue with an RF frequency, recovering RF echo signals from said substrate and from a plurality of locations on said biological tissue, wherein each of the plurality of locations corresponds to a specific pixel comprising the parameter map, the recovered RF echo signals including a reference signal recovered from the substrate at a point devoid of tissue, a first sample signal recovered from an interface between the biological tissue and water, and a second sample signal recovered from an interface between said biological tissue and said substrate, repeatedly applying a plurality of computer-generated calculation steps based on the reference signal, the first sample signal and the second sample signal to generate estimated values for a plurality of parameters associated with each of the specific pixels in the parameter map. The plurality of computer-generated calculation steps includes a denoising step, and using the generated estimated values to create said parameter map depicting parameters including, but not limited, to acoustic impedance, speed of sound, ultrasound attenuation, mass density, bulk modulus and nonlinear attenuation.

Methods are provided for estimating a quality of cement in the annuli of a multi-string wellbore. Wideband acoustic energy signals are generated and detected in the wellbore and are processed to obtain indications of wideband casing-formation phase slowness dispersions in the wellbore. The indications are compared to reference wideband model casing-formation phase slowness dispersions in order to estimate status of cement or lack of cement in the annuli at that location based on the results of the comparison.

Operational configuration and temperature compensation methods are provided for bulk acoustic wave (BAW) resonator devices suitable for operating with liquids. Temperature compensation methods dispense with a need for temperature sensing, instead utilizing a relationship between (i) change in frequency of a BAW resonator at a phase with adequate sensitivity and (ii) change in frequency of a phase that is correlated to temperature. Operational configuration methods include determination of an initial phase response of a BAW resonator in which temperature coefficient of frequency is zero, followed by comparison of sensitivity to a level of detection threshold for a phenomenon of interest.

The invention provides embodiments of an apparatus and for improved, higher quality and higher resolution acoustic impedance scanning of an object through a barrier. Such acoustic impedance scanning can be employed to obtain biometric information of a person via fingerprint pattern.