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
Registration and network access control
Specification of latency in programmable device configuration
Communication system
Position-measuring device
Transaction cost recovery queue management
Multiple CQI feedback for cellular networks
Device and method incorporating an improved text input mechanism
  Randomly Featured Patents
Seek trajectory adaptation in sinusoidal seek servo hard disk drives
Light emitting diode package
Adherent ultraviolet cured coatings
Dewar cryopumping using barium oxide composite for moisture removal
Internal combustion engine intake heat exchanger
Motor vehicle headlight including an improved light source
Locking mechanism for transformer enclosure door
Method, system and program products for assigning an address identifier to a partition of a computing environment
World-wide-web server with delayed resource-binding for resource-based load balancing on a distributed resource multi-node network
Airway