Velocity and holdup determination method for stratified gas-liquid flow in highly inclined conduits
AssigneeWestern Atlas International, Inc.
InventorShanhong Song
Life of this patent
Estimating the term…
Abstract
A method of determining volumetric flow rates of gas and liquid in a highly inclined conduit. The method includes measuring the velocity the gas, measuring the velocity of the liquid, calculating a fractional amount of the cross-sectional area of the conduit occupied by the gas and occupied by the liquid, and calculating the volumetric flow rates from the measurements of velocity and from the calculated fractional amounts of the cross-sectional area of the conduit occupied by the gas and by the liquid. In a preferred embodiment, the gas velocity is measured by cross-correlating measurements of two spaced apart temperature sensors after momentarily heating the gas. In the preferred embodiment, the liquid velocity is measured by a spinner flowmeter.
Claims16
A method of determining volumetric flow rates of gas and liquid in a highly inclined conduit wherein said gas and said liquid comprise substantially stratified flow, said method comprising the steps of:
- measuring a velocity of said gas;
- measuring a velocity of said liquid;
- calculating a fractional amount of cross-sectional area of said conduit occupied by said gas and by said liquid;
- and
- calculating said volumetric flow rates from said velocity measurements and from said calculated fractional amounts of said cross-sectional area.
A method of determining volumetric flow rates of gas and liquid in a highly inclined conduit wherein said gas and said liquid comprise substantially stratified flow, said method comprising the steps of:
- measuring a velocity of said gas;
- measuring a level of said liquid within said conduit;
- calculating a fractional amount of cross-sectional area of said conduit occupied by said gas and by said liquid;
- calculating a velocity of said liquid;
- and
- calculating said volumetric flow rates from said gas velocity measurement and from said calculated fractional amounts of said cross-sectional area and calculated liquid velocity.
A method of determining volumetric flow rates of gas and liquid in a highly inclined conduit wherein said gas and said liquid comprise substantially stratified flow, said method comprising the steps of:
- measuring a velocity of said liquid;
- measuring a level of said liquid within said conduit;
- calculating a fractional amount of cross-sectional area of said conduit occupied by said gas and by said liquid;
- calculating a velocity of said gas;
- and
- calculating said volumetric flow rates from said liquid velocity measurement and from said calculated fractional amounts of said cross-sectional area and calculated gas velocity.
Dependencies are inferred from the claim text.