Downhole steam quality measurement

Patent · Tue Apr 14 00:00:00 EDT 1987

OSTI ID:6469216

Lee, D O; Montoya, P C; Muir, J F; Wayland, J R

A method is described for measuring the quality of steam flowing through a conduit containing a pair of spaced electrodes comprising calibrating the system by: filling the conduit with steam samples of known qualities; applying an AC frequency across the electrodes; measuring the capacitance between the electrodes as a function of frequency for each steam sample; determining a frequency range where measured capacitance is a linear function of steam quality; and injecting an unknown sample of steam into the conduit; applying an alternating voltage at a selected frequency within the frequency range to the electrodes; measuring the capacitance between the electrodes at the selected frequency; and determining steam quality from the capacitance measurement.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4658208
• OSTI ID: 6469216
• Resource Relation: Patent File Date: Filed date 19 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
STEAM INJECTION
ELECTRODES
QUALITY CONTROL
STEAM QUALITY
MEASURING METHODS
ALTERNATING CURRENT
CALIBRATION
CAPACITANCE
ELECTRIC POTENTIAL
ENHANCED RECOVERY
FREQUENCY CONTROL
FREQUENCY SELECTION
PETROLEUM
SAMPLING
SPACE DEPENDENCE
WELL STIMULATION
CONTROL
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
PHYSICAL PROPERTIES
RECOVERY
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production