Drilling Fluid Management & Disposal
Drilling fluid waste management and solids control of drilling mud related technical and developed situation.
Other than hydrocyclone and manifold plugging, improperly sized or operated centrifugal pumps are by far the greatest source of problems encountered with hydrocyclones. Centrifugal pump and piping sizing are critical to efficient hydrocyclone operation. A pressure gauge should be mounted on the hydrocyclone inlet manifold.
Continue reading “HYDROCYCLONE OPERATING TIPS”
A viscosified seawater fluid (SG 1.1, plastic viscosity (PV) 2.0 centipoise
(cP), and yield point (YP) 12.0 lb/100 sq ft) is circulated to clean out
a cased well bore. What size of low-gravity solids will settle out with
5-micron barite particles? What is the settling velocity of 10-micron
barite particles in rig tanks? From Stokes’ law, settling velocity is:
Continue reading “Three Examples About Stokes’ Law”
In spray discharge, for any set of cone diameter, feed slurry compositions,
flow properties, volumetric flow rates, and pressure conditions, some particles’ size (mass) is 100% discarded from the apex.
Continue reading “MEDIAN (D50) CUT POINTS”
Hydrocyclones are arranged with the unit of larger cone size upstream of the smaller unit. A separate tank is needed for each size unit. Generally, a desander and a desilter manifold are available as part of the rig equipment. Hydrocyclones should process all drilling fluid entering their suction compartments independently of the drilling-fluid circulation rate.
Continue reading “Desanders, Desilters And Hydrocyclones Arrangements”
