VERSATILE PRESSURIZED CONSISTOMETER/RHEOMETER/FLUID LOSS APPARATUS

摘要

ABSTRACT OF THE DISCLOSUREThe present invention relates to an apparatusprimarily intended to serve as a pressurized consisto-meter suitable for determining the thickening time ofcement slurries under temperature and pressure con-ditions similar to those encountered in the cementingoperations involved in oil and gas well completions.A slurry cup, which also serves as the pressure vessel,is held stationary in an externally heated jacket whilea DC motor generator is used to rotate a mixing paddle.The motor current drawn by the generator is used asa measure of slurry consistency and the speed ofrotation of the mixing paddle is controlled by a gener-ator feedback signal. Modifications to the apparatusenable the apparatus to be used as a pressurized rheo-meter,as an on-line viscometer, as a fluid loss cell,or as an apparatus for conditioning a cement slurrybefore transferring this slurry under pressure to astandard high temperature, high pressure fluid lossapparatus.