Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data










Image Number 19 for United States Patent #7317989.

The present invention provides a chemometric equation to estimate fluid density, viscosity, dielectric constant and resistivity for a formation fluid sample downhole. The chemometric estimates can be used directly as estimated values for fluid density, viscosity, dielectric constant and resistivity for a formation fluid sample downhole. The chemometric estimates can also be plugged into a Levenberg-Marquardt (LM) non-linear least squares fit, as an initial estimate of the parameter to be estimated by the LM fit. If the initial parameter estimate is too far from the actual parameter values, the LM algorithm may take a long time to converge or even fail to converge entirely. The present invention estimates an initial value of a parameter that provides a high probability that the LM algorithm will converge to a global minimum.








 
 
  Recently Added Patents
Signal phase-based location of network nodes
Method and device for managing a turning setpoint applied to at least one turning actuator for the rear wheels of an automobile
Monofocal photographing lens assembly
Stevia formulation
Digital broadcast receiver and method for processing caption thereof
Debris tray
Data storage apparatus, memory control apparatus and method for controlling flash memories
  Randomly Featured Patents
Fluid filled type vibration-damping device
Embolism protection devices
Proxy delegation for content delivery
Garden shear control mechanism
Image sensor and manufacturing method thereof
Optical sensor, method of making the same, and display panel having optical sensor
Soft drink container supporting additive containment and selective release
Tire inflator
Outsole bottom
Drive circuit for high-speed modulation of a laser diode