دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see fracture gradient. frac job n: see formation fracturing.

n: The pressure gradient, generally stated in psi/ft [kPa/m], at which a specific formation interval breaks down and accepts fluid. Determining the frac gradient is a key requirement in designing and analyzing a hydraulic fracturing treatment.

n: the pressure gradient (psi/foot) at which a formation accepts whole fluid from the wellbore. Also called frac gradient.

n: a measure of how the strength of the rock (i.e.its resistance to breakdown) varies with depth.

the gradient needed to initiate a fracture.