ACOUSTIC METHOD FOR DETERMINING THE STATIC GEL STRENGTH OF A CEMENT SLURRY

摘要

An acoustic method and system for determining the static gel strength of one or more cement slurry samples at wellbore temperatures and pressures. The cement slurry sample to be tested is maintained in a static condition inside an acoustic pressure vessel at a controlled temperature and pressure. A first transducer generates an acoustic signal which is transmitted through the sample. A second transducer measures and records the amplitude of the acoustic signal after it transits the sample. This data is then processed and the static gel strength of the sample is determined according to a predetermined relationship relating signal amplitude to static gel strength.