ENVIRONMENTALLY COMPATIBLE HIGH DENSITY DRILL MUD OR BLOW-OUT CONTROL FLUID

摘要

ABSTRACTAn environmentally compatible high density drillingor blow-out control fluid is provided wherein densities bet-ween twenty-four (24) and forty (40) pounds per gallon canbe achieved. Such preferred fluid is aqueous based, uses anon-toxic gelling agent such as fine iron oxide powder, acoarser first weighting material such as fine iron powder,and a second still coarser weighting material such as ironshot, steel shot or mixtures thereof.