The hydraulics of drilling is about the most significant determinant in the performance of drilling for oil (hydraulikk pumpe) . The main purpose of hydraulics in drilling for oil is assist in the maximization of the output of the drilling pump, so as to enable the drill bit to operate at the highest level of efficiency possible. A high degree of drilling efficiency is dependent on how much energy can be saved from friction caused by the circulating fluid in the drilling system. Hence, the hydraulics of the drilling system is paramount in reducing the loss of energy by the drill.
The optimization of the hydraulics can substantially enhance the speed of drilling penetration, thanks to the technological advancements in drilling techniques, which has also additionally alleviated the financial cost of drilling for oil (hydraulikk sylinder) . These technological advancements include the conception of various criteria in the design of the fluid hydraulics of the drilling system, especially in the process of hole cleaning.
In order to achieve a desirable rate of penetration by the drill and perform maximum hole cleaning, drilling engineers who are experts in fluid rheology state that the hydraulics of the drilling system must ensure that the horsepower, impact force, and jet velocity of the hydraulics are operating at is at its maximum.
Pneumatic drilling is also used to drill for oil in geotechnical boreholes and mining boreholes, and in this process numerous kinds of gases are utilized. As gases have significantly smaller densities in comparison to the density of water, pneumatic drilling is also exclusively aimed at drilling for oil in dry rock structures that do not release much moisture during the drilling process (oljeanalyse) . Hydraulic drilling is not ideal for these type of geological formations, as the speed of penetration will be compromised and the performance of the drilling system will be adversely affected.