公开(公告)号：US20230041370A1

公开(公告)日：2023-02-09

申请号：US17758796

申请日：2021-02-23

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Ryan M. BRIGGS ,  Linda Y. DEL CASTILLO ,  Mina RAIS-ZADEH

IPC: G01N21/31 ,  G01N21/359 ,  E21B47/01

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.

公开(公告)号：US20240125636A1

公开(公告)日：2024-04-18

申请号：US18546420

申请日：2022-03-25

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Mathieu FRADET ,  Luis Phillipe C.F. TOSI ,  Mina RAIS-ZADEH ,  Kristopher V SHERRILL ,  Darius MODARRESS ,  Pavel SVITEK ,  Katayoon MODARRESS RUBY

IPC: G01F1/7086 ,  E21B47/01 ,  E21B47/113 ,  G01F1/74

CPC classification number: G01F1/7086 ,  E21B47/01 ,  E21B47/114 ,  G01F1/74

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.

公开(公告)号：US20240229643A1

公开(公告)日：2024-07-11

申请号：US18277310

申请日：2022-03-28

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： 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

IPC: E21B47/113 ,  E21B47/013 ,  G01F1/7086 ,  G01F1/74

CPC classification number: E21B47/113 ,  E21B47/013 ,  G01F1/7086 ,  G01F1/74

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.

公开(公告)号：US20230212941A1

公开(公告)日：2023-07-06

申请号：US17999138

申请日：2021-06-11

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Mathieu FRADET ,  Ryan M. BRIGGS ,  Linda Y. DEL CASTILLO ,  Mina RAIS-ZADEH

IPC: E21B47/113 ,  E21B47/017

CPC classification number: E21B47/114 ,  E21B47/0175

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.