Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Controller for oil wells with a thermal dispersion probe










Image Number 8 for United States Patent #5525040.

A controller for controlling the pumping unit for an oil well comprises a housing having a first and a second tip for placement in a flow of oil between the wellbore to holding tanks; means for generating a substantially constant power; a constant power heater in the first tip connected to the means for generating, for radiating a substantially constant heat; means for determining the temperature at each the first and second tips and for generating a digital signal indicative of the temperature of the first and second tips; supervising means for controlling the means for determining, processing the digital signal for determining a rolling average signal, and generating a control signal therefrom which is independent of ambient temperature of the oil flow; and means for switching the pumping unit on or off, according to the control signal. The controller further comprises means for calibrating the means for determining. The constant power heater is preferably a FET connected in series with a resistor. The invention also provides a optimizing method for controlling a pumping unit of an oil well.








 
 
  Recently Added Patents
Systems, methods, and apparatus to prepare a mobile device for provisioning
Methods for processing 2Nx2N block with N being positive integer greater than four under intra-prediction mode and related processing circuits thereof
Nonvolatile semiconductor storage device having conductive and insulative charge storage films
Molecular sieve
Security authentication method, apparatus, and system
Positioning vehicles to improve quality of observations at intersections
Bad column management with bit information in non-volatile memory systems
  Randomly Featured Patents
Bottom mount auxiliary pumping system seal section
Outlet guide vane structure
Network connection apparatus and a method thereof
Inductive heating coil
Automobile audio system
Real-time intelligent packet-collation systems and methods
Apparatus and method for perusing selected vehicles having a clean title history
Polypropylene-based adhesive compositions
Apparatus for spreading treating mix on a moving paper--or cardboard web
Makeup powder compact