Patent ID: 6584833
Filing Date: 2003-07-01
Classification: E21B,G01N

Abstract:
An apparatus for measuring or analyzing sag in a drilling fluid, or other solids bearing fluid, said apparatus comprising:an assembly comprising an elongate container and a rotatable, concentric inner cylinder, separated by an annulus for containing said fluid; a rotator for rotating said shaft; a horizontal pivoting support for said assembly, near its geometric center, forming a central pivot axis; a housing for said assembly and said pivoting support for immersing said assembly in pressurization fluid and for holding said container in an inclined position; at least one piston in communication with said test fluid and said pressurization fluid along said central pivot axis; at least one seal for keeping said test fluid and said pressurization fluid separate; a detector for detecting or measuring change in torque or moment about said central pivot axis at a constant angle of incline.