BS&W in crude oil streams
AssigneeShell Oil Company
InventorsThomas L. Stewart, Florian C. Demny
Life of this patent
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Abstract
Capacitance cells comprising concentric tubes are maintained clean of sediment in the space between the inner and outer tubes where capacitance is measured by (1) suspending fibrous strands in the fluid flow outside the inner tube and/or (2) partially plugging the inner tube to increase flow outside the inner tube.
Claims10
A process for reducing inequality between flow velocity within at least two dimensionally similar BS&W monitors, both of which have capacitance cells of at least two concentric tubes through which a liquid to be monitored is flowed, one of said monitors normally having a substantially greater volumetric flow than the other of said monitors, comprising, partially blocking the inner tube of the lesser flow monitor to the extent necessary to increase flow between the inner and outer tubes and to reduce inequality with flow between the inner and outer tubes of the greater flow monitor.
A process for continuously cleaning a BS&W monitor which has a capacitance cell of at least two concentric tubes through which a liquid to be monitored is flowed, comprising suspending one or more fibrous strands longitudinally in the current flow within the concentric tubes, whereby the strands function to clean the walls of the tubes.
Apparatus for reducing inequality between flow velocity within at least two dimensionally similar BS&W monitors, both of which have capacitance cells of at least two concentric tubes through which a liquid to be monitored is flowed, one of said monitors normally having a substantially greater volumetric flow than the other of said monitors, comprising, means for partially blocking the inner tube of the lesser flow monitor to the extent necessary to increase flow between the inner and outer tubes to reduce inequality with flow as between the inner and outer tubes of the greater flow monitor.
Apparatus for continuously cleaning a BS&W monitor which has a capacitance cell of at least two concentric tubes through which a liquid to be monitored is flowed, comprising, one or more flexible strands suspended longitudinally in the current flow within the concentric tubes.
Dependencies are inferred from the claim text.