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
Front end for RF transmitting-receiving systems with implicit directional control and time-multiplexing method in submicron technology
Automated tuning in a virtual machine computing environment
Method and apparatus for rebuilding data in a dispersed data storage network
Secure mobile ad hoc network
Process for preparing red cocoa ingredients, red chocolate, and food products
Method and apparatus for detecting and tracking vehicles
Instrumenting configuration and system settings
  Randomly Featured Patents
Joint for articulated vehicles
Miscible polymer blends containing poly(2-alkyl-2-oxazoline)
Flexible disc recorder construction
Process for depopulating a circuit board
Wafer carrier with apertured door for cleaning
Composition and method for the efficacious and safe administration of halopyruvate for the treatment of cancer
Layer for cables having improved stress whitening resistance
Process for purifying the mixed ester, ethylene glycol 1-(2-p-chlorophenoxy)-2-methylpropionate nicotinate
Picture frame
Bounded-deferral policies for guiding the timing of alerting, interaction and communications using local sensory information