公开(公告)号：US20200240263A1

公开(公告)日：2020-07-30

申请号：US16651221

申请日：2018-10-12

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY ,  CHEVRON U.S.A. INC.

Inventor： Stewart SHERRIT ,  Jeffery L. HALL ,  Dyung Tien VO ,  Mark Anthony EMANUELE

IPC: E21B47/26 ,  G01N33/28 ,  E21B47/06 ,  E21B47/07 ,  E21B47/10 ,  E21B49/08 ,  G01V9/00

Abstract: Systems and methods for delivering detailed information about physical properties, including inflow data, in a downhole of a well to the surface without the need of providing cabling to the downhole are presented. Such information can be based on data captured by sensors placed within the downhole of the well, and subsequently stored into memory of ruggedized buoyant memory modules (RBMMs) that are physically injected into the fluid flow of the well. The RBMMs use the flow of the fluid inside of the well to deliver the data to a location where the data can be extracted. Data stored in the RBMMs can be extracted either directly from the RBMMs or remotely via, for example, a wireless interface.

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：US20170298709A1

公开(公告)日：2017-10-19

申请号：US15486221

申请日：2017-04-12

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Mircea BADESCU ,  Stewart SHERRIT ,  Xiaoqi BAO ,  Yoseph BAR-COHEN ,  Jeffery L. HALL

IPC: E21B34/14 ,  F16K1/12

CPC classification number: E21B34/14 ,  E21B43/12 ,  F16K1/12 ,  F16K31/04 ,  F16K35/02

Abstract: A valve that allows control of each of one or more flow paths using one actuator is presented. Rotary motion of a motor is transformed into linear motion using a roller screw mechanism. The travel of the roller screw nut is predefined between front and back hard stops that prevent the roller screw from rotating when the stops are reached. A poppet is attached to the nut using a flexible connection where a spring is compressed. The nut also drives a sleeve with inclined surfaces that moves relative to a locking flexure. When the sleeve is driven by the nut toward closing the valve, the sleeve deforms flanges of the locking flexure causing a cantilever end finger of the flexure to move radially and prevent the poppet from being pushed back. If the sleeve is moved farther in the direction of valve closing, a groove on the sleeve engages notches on the fingers creating a detent that prevents the spring to push the sleeve back.