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.