Patent · US Expired

Quantification of blast furnace slag in a slurry

US5285679A · kind A · utility

1Cited by
53References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 22, 1992
Grant dateFeb 15, 1994
Priority date—
Expiry dateOct 22, 2012

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N23/20
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method is provided to determine the concentration of an amorphous material such as blast furnace slag in a slurry such as drilling fluid, completion fluid fluids. A sample is annealed at a temperature between about 800.degree. C. and about 1000.degree. C. for a time period of about six hours to form crystals from the amorphous material, and the sample along with a known amount of a standard is then analyzed by X-ray diffraction. This method is particularly useful in determining the amount of blast furnace slag in a drilling fluid prior to conversion of the drilling fluid to a wellbore cement slurry by addition of additional blast furnace slag.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.