weight on bit การใช้

The weight on bit allows you to tune that tendency.
Weight on bit, the force exerted on the cutting face of the bit by the drill rods in the hole above the bit, must also be monitored.
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.
The parameters used to calculate "'d c-exponent "'values are : drilling rate ( ROP ), rotary speed, weight on bit, bit diameter and mud weight; it is plotted against drilled depth.
Other constraints are dictated by its intended use : formation type ( hardness, plasticity, abrasiveness ) to be drilled, operating environment at depth ( temperature, pressure, corrosiveness ), the capabilities of the equipment used in the operation ( rotating speed, available weight on bit, pump horsepower ) and the angle of the wellbore ( vertical, directional, horizontal ).