Drilling fluid cleaners were equipment of solids control, also called mud cleaner or mud conditioner, etc.. Drilling fluid cleaner was evolved in the early 1970s to remove fine drilled solids from medium weighted mud without excessive loss of barite and fluid. It is also proved valuable tools in drilling loop closed systems and other applications (dispersed weighted). Drilling fluid cleaner use a combination of desander and/or desilter hydrocyclones and very fine mesh vibrating screens (120~400 mesh) to remove fine drilled solids while returning valuable mud additives and liquids back to the active mud system.
Improved Solids-Control–Closed-Loop Systems
The overall efficiency of cuttings removal by the solids-control system, Es, can be expressed as:
Es = E1 f 1 +( 1 – E1 )E2 f 2 + ( 1 – E2 )E3 f 3 +( 1 – E3 )E4 f 4 (1)
Continue reading “Improved Solids-Control–Closed-Loop Systems”
Dewatering Units And Equipment
The use of “dewatering units,” as a regular part of the drilling fluid treatment process on drilling rigs, continues to increase. A dewatering unit, the final phase of a solids control program, is designed to discard no free liquid. A solids control program in which a dewatering unit is used is referred to as a “closed-loop system” (CLS), “sump-less system,” or “chemically enhanced centrifugation” (CEC).
Removing Mud Solids
A field method for measuring solids sizes on the job. It is simple and easy to use and should improve the efficiency of solids control. There will be some sacrifice in accuracy; however, only the relative weight percentage distribution of the particles is needed to allow constructive steps to remove these particles.