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
Ventilated vacuum commutation structure
Resin composition, prepreg, resin sheet, metal-clad laminate, printed wiring board, multilayer printed wiring board and semiconductor device
Automated gate system
Container
Managing method and apparatus for servicing contents provided by content provider
Method and system for advertisement using internet browser to insert advertisements
Engineered nucleic acids encoding a modified erythropoietin and their expression
  Randomly Featured Patents
Biologically active membrane material
Wellhead apparatus
Coupling device
Device and method for the thermal treatment of unshelled eggs
Method and apparatus for controlling the temperature of a gas distribution plate in a process reactor
Portable phone
High temperature hot conductors
Formulation containing amphipathic weak base and/or amphipathic cation and multiple drug resistance inhibitor
Electronic balance with data output for use in explosive areas
Measured data display device with strip chart simulation and table format