Patents by Inventor Mina Rais-Zadeh

Mina Rais-Zadeh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240229643
    Abstract: Systems and methods for measuring multiphase flow of a fluid mixture in a downhole pipe of an oil/gas/water well are presented. According to one aspect, time-series measurement of the flow velocity and composition at a plurality of discrete azimuths of the pipe are measured. Measured time-correlated velocity and composition data are used to identify fluid components present in the pipe and estimate cross-sectional area and velocity of each of the fluid components. According to another aspect, pressure and temperature at the downhole pipe are measured, and used to calculate the mass density of each fluid component. For each of the fluid components, the cross-sectional area, velocity, and mass density are used to generate a corresponding mass flow rate. An algorithm with a set of parameters tuned to specific flow regimes is used to map the sensed data from the time-scrics measurements into the mass flow rate of each fluid component.
    Type: Application
    Filed: March 28, 2022
    Publication date: July 11, 2024
    Inventors: Stewart SHERRIT, Luis Phillipe C.F. TOSI, Kristopher V. SHERRILL, Mina RAIS-ZADEH, Jeffery L. HALL, Jacob F. TIMS, Mathieu FRADET, Ryan M. BRIGGS, Christopher R. YAHNKER
  • Publication number: 20240125636
    Abstract: Systems and methods for measuring flow velocity of a fluid mixture in a lateral section of an oil/gas/water well with a dual beam laser doppler velocimetry (LVD) based flow sensor are presented. According to one aspect, the flow velocity is measured by tracking movement of particles and/or features in the fluid mixture while traversing an interference pattern generated by the intersection of two separate coherent beams that are perpendicular to a direction of the flow. Flow velocity is derived based on a time it takes the particles to traverse consecutive fringes of the interference pattern as indicated by intensity peaks detected at the photodetector. The LDV-based flow sensor may be rotatable to measure flow velocities at different angular positions of a pipe in a lateral section of an oil well, rotation provided by rotation of an element of a mobile vessel to which the flow sensor is rigidly coupled.
    Type: Application
    Filed: March 25, 2022
    Publication date: April 18, 2024
    Inventors: Mathieu FRADET, Luis Phillipe C.F. TOSI, Mina RAIS-ZADEH, Kristopher V SHERRILL, Darius MODARRESS, Pavel SVITEK, Katayoon MODARRESS RUBY
  • Publication number: 20230212941
    Abstract: Systems and methods for measuring flow velocity of a fluid mixture in a lateral section of an oil/gas well are presented. The flow velocity is measured by tracking movement of particles and/or features in the fluid mixture via visible and/or infrared imaging sensors of a camera-based flow sensor. According to another aspect, the imaging sensors detect back-reflected light by the particles and/or features, the light emitted by illuminators in the visible and/or infrared spectrum. According to yet another aspect, the particles are quantum dot illuminators injected into the fluid mixture, the flow velocity based on a time-of-flight of the quantum dots. The camera-based flow sensor may be rotatable to measure flow velocities at different angular positions of a pipe, rotation provided by rotation of an element of a mobile vessel to which the flow sensor is rigidly coupled.
    Type: Application
    Filed: June 11, 2021
    Publication date: July 6, 2023
    Inventors: Mathieu FRADET, Ryan M. BRIGGS, Linda Y. DEL CASTILLO, Mina RAIS-ZADEH
  • Publication number: 20230041370
    Abstract: A composition sensor for measuring composition of fluid mixtures is presented. The composition sensor includes a plurality of high-brightness emission sources having respective spectrally narrow wavelength emission bands in the infrared region. The wavelength emission bands overlap absorption wavelength bands of the composition. The wavelength emission bands are wavelength multiplexed and time multiplexed prior to emission through a fluid mixture. A single optical detector senses the emitted light. The composition sensor includes arms that can rotate to measure composition at different angular position of a pipe in a lateral section of an oil well. Rotation of the arms is provided by rotation of an element of a mobile vessel to which the arm is rigidly coupled. The rotation of the arms is provided by a rotation of a nose of the mobile vessel that rotates independently from a main body of the mobile vessel.
    Type: Application
    Filed: February 23, 2021
    Publication date: February 9, 2023
    Inventors: Ryan M. BRIGGS, Linda Y. DEL CASTILLO, Mina RAIS-ZADEH
  • Publication number: 20220043288
    Abstract: Disclosed herein is a tunable diffraction grating using surface acoustic waves. In some embodiments, the tunable diffraction grating includes a piezoelectric substrate including an interdigital transducer (IDT) region and a delay line region; a plurality of IDT electrodes positioned in the IDT region, wherein the IDT electrodes are each individually addressable such that the voltage applied to each of the electrodes is phase shifted, and wherein the IDT electrodes provide the phase shifted voltage to induce surface acoustic waves in the piezoelectric substrate in a pattern which produce a grating in the delay line region. Advantageously, tunable diffraction gratings have many applications including spectrometers for orbiters and rovers to Mars.
    Type: Application
    Filed: August 9, 2021
    Publication date: February 10, 2022
    Applicant: California Institute of Technology
    Inventors: Yen-Hung Wu, Stewart Sherrit, Valerie Scott Kristof, Mina Rais-Zadeh, Mustafa B. Coskun
  • Patent number: 9917244
    Abstract: A resonant body high electron mobility transistor is described with resonance frequencies in gigahertz regime, limited by the cutoff frequency of the readout transistor. Piezoelectric materials form the resonating membrane of the device. Different modes of acoustic resonance, such as a thickness-mode, can be excited and amplified by applying an AC signal to the transducer electrode and proper biasing of all electrodes. The drain electrode reads out the acoustic resonance and amplifies it. The drain electrode is placed at or near where the piezoelectric charge pickup is maximum; whereas, the source electrode is placed at a nodal point with minimum displacement.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 13, 2018
    Assignee: The Regents of The University of Michigan
    Inventors: Mina Rais-Zadeh, Azadeh Ansari
  • Publication number: 20150364669
    Abstract: A resonant body high electron mobility transistor is described with resonance frequencies in gigahertz regime, limited by the cutoff frequency of the readout transistor. Piezoelectric materials form the resonating membrane of the device. Different modes of acoustic resonance, such as a thickness-mode, can be excited and amplified by applying an AC signal to the transducer electrode and proper biasing of all electrodes. The drain electrode reads out the acoustic resonance and amplifies it. The drain electrode is placed at or near where the piezoelectric charge pickup is maximum; whereas, the source electrode is placed at a nodal point with minimum displacement.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 17, 2015
    Inventors: Mina Rais-Zadeh, Azadeh Ansari