Drilling fluid additives

Details Drilling fluid additives Drilling fluid additives

C - Chemistry, Metallurgy

09

K

260/1, 260/133,

C09K 8/035 (2006.01)

Patent

CA 1176630

ABSTRACT A drilling fluid additive comprising a complex compound or complex compounds, at least one compounds to be selected out of a group of compounds of titanium, zirconium and hafnium belonging to group IVa of the periodic table and, as desired, at least one lignin ensures, for a long period, significantly improved mud functions even at elevated temperatures under high pressure such as encountered in the depths of the earth.

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