Laboratory Experimental Study on S0-1Water-in-oil Emulsion Killing Fluid

A new S0-1water-in-oil killing fluid is presented based on comparison with forum and properties of the killing fluids of the same kind made in China.Laboratory property experiment show that it can keep the original fea-tures of formations as much as possible and protect effec-tively pay zones.It is especially suitable for use in low p ressure,low permeable and strong water sensitive forma-tions.It can keep stab ilized for a long time at high temper-ature,thus killing operation can be per formed in a long period with no formation damage from malfunction of killing flu id.Cost of killing operation is reduced by a big margin.