Inventors:
Ahmed Mohamed Mohamed Gomaa - Houston TX, US
Jia Zhou - , US
Hong Sun - Houston TX, US
Qi Qu - Houston TX, US
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
G06F 19/00
Abstract:
A method of determining the friction pressure drop gradient of at least one drag-reducing polymer passing through a tubing in an underground well includes determining the pressure drop, velocity and relaxation time of the drag-reducing polymer as it passes through a length of small diameter straight tubing at multiple injection rates in the lab. For each data set, the variables x=(Relaxation Time×Velocity) and y=(Pressure Drop Gradient×Diameter×(+De)) are calculated, wherein De is the Deborah number. Each x, y data point is plotted on a graph where the x-axis represents (Relaxation Time×Velocity) and the y-axis represents (Pressure Drop Gradient×Diameter×(+De)), wherein the curve formed by the plotted data approximates the x and y data for the drag-reducing polymer as it passes through the tubing in the underground well.