Weight on bit downhole MWD sensors can measure weight-on-bit more accurately and transmit the data to the surface. Weight on bit Weight on bit (WOB), as expressed in the oil industry, is the amount of downward force exerted on the drill bit and is normally measured in thousands of pounds. Weight on bit is provided by drill collars, which are thick-walled tubular pieces machined from solid bars of steel, usually plain carbon steel but sometimes of nonmagnetic nickel-copper alloy or other nonmagnetic premium alloys. Gravity acts on the large mass of the collars to provide the downward force needed for the bits to
Standard weight in fish common measures of condition used in fisheries assessment and management. Fulton’s condition factor, K, is another measure of an individual fish’s health that uses standard weight. Proposed by Fulton in 1904, it assumes that the standard weight of a fish is proportional to the cube of its length: formula_2 where "W" is the whole body wet weight in grams and "L" is the length in centimeters; the factor 100 is used to bring K close to a value of one. Standard weight in fish Standard weight in fish is the typical or expected weight at a given total length for