Shear strength:

Terms Related to Shear strength

• Shearometer

  An instrument used to measure the shear strength, or gel strength, of a drilling fluid. See gel strength

• Gel strength

  A measure of the ability of a colloidal dispersion to develop and retain a gel form, based on its resistance to shear. The gel, or ...

• Tensile strength

  The greatest longitudinal stress that a metal can bear without tearing apart. A metal's tensile strength is greater than its yield strength.

• Casing grade

  A standardized measure of casing-strength properties. Since most oilfield casing is of approximately the same chemistry (typically steel), and differs only in the heat treatment ...

• Flat gel

  A condition wherein the 10-minute gel strength is substantially equal to the initial gel strength.

• Stormer viscometer

  A rotational shear viscometer used for measuring the viscosity and gel strength of drilling fluids. This instrument has been largely superseded by the direct-indicating viscometer.

• Ten-minute gel strength

  The measured 10-min gel strength of a fluid is the maximum reading (deflection) taken from a direct-reading viscometer after the fluid has been quiescent for ...