The APHRON ICSTM fluid system changes the way fluid works. It is the only fluid that provides a variable density fluid downhole, and is able to create an automatic "at-balance" condition between the annular and formation pressures to stop invasion and movement of the fluid into the rock. The system has been used worldwide in high permeability sands, fractured sandstone, fractured limestone and dolomite, as well as fractured granite. It has proven highly effective in stopping losses and invasion while providing rapid cleanup and enhanced production.

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