Drilling fluid experts tell us: during solids control equipment working procedure ,usually refer to the use of a suitable slurry, a mixture of fresh water and mud must be consistent with the geological conditions of the material, not just water, due to the corresponding carrying capacity and baseboard performance water flowing state does not have, and it also kept the surrounding rock drilling penetration so will lead to landslides or necking, but will make the pullback and rotation pressure rise, and result in excessive wear of the drill pipe and drill. So：Only use water will produce many adverse factors, sometimes negative factors of water far exceeds its favorable factors, and even lead to the failure of the project.
We know that horizontal directional drilling market competition is becoming increasingly fierce, but if operator who can possible use an appropriate mud, even in difficult geological conditions and lower when the contract price certainly can make a lot of money. Because the specific soil conditions will determine the specific components you use and composition of mud, do not reluctant to spend money on material into the mud, in fact, only the cost of materials mud between 1-5% of the total project costs. Otherwise, they may spend more money in the project to deal with accidents or cause borehole project failure, losses would greatly exceed the material cost, and it is really not worth to loss the whole market.
Because these situations because “water is not merely a suspension of chips, since it has a stable borehole drilling fluid, cuttings suspension and the effect of the hole to the outside of the belt, so that, when not used for this type of drilling fluid drilling situations , suspension will become a problem for the drilling fluid flow through the solids control equipment, it will stay in the hole drilled, resulting in burying and drilling fluid loss. “
