STARTING MATERIAL FOR PRODUCING BORING LIQUID FOR SEPARITING BORING MUD AND CEMENT GROUT AND PROCESS FOR PRODUCING SAID STARTING MATERIAL

摘要

Basic material for a drilling fluid, which is suitable for sepg. drilling mud from laitance comprises one or two components. - The simple component system contains at least 40% water, swelling clay mineral, gelling and plastifying agents and an electrolyte soln.. The binary system contains a dry mixt. of solids (A) and an aq. soln. (B). - In order to ensure correct conditions for sepn. the specific gravity of the systems is controlled by the addn. either of density enhancing cpds. or density lowering water. (Dwg.0/0)