2. n. [Drilling]
The specified minimum yield strength of steel used in pipe. For example, the yield of N-80 casing is 80,000 psi [552 MPa].
See related terms: casing grade
3. n. [Drilling Fluids]
A term used to specify the quality of a clay according to the number of barrels of 30-cP viscosity mud that one ton of the clay would produce. Although seldom used today, clays were classified as high-, medium- or low-yield bentonites. A "good" bentonite produced at least 85 bbl of mud per ton. High-yield clays produced 30 to 50 bbl/tonUS, and low-yield clays produced 15 to 30 bbl/tonUS. (Note that yield and yield point are not related terms.)
See related terms: low-yield clay, poise, viscosity
