ABSTRACT
This article presents the state of the art, research tasks and the formulation of the drilling fluid for abnormal operation conditions. We have proposed a principally new high-inhibited polymer-mud fluid that has the improving filtration and rheological properties. In this article we have given the mechanism of quality control, preparations technology and technical and economic indexes of the practice of the tailored composition of the multiple-functional drilling fluid, that is treated gradually in the ultrasonic field and in the magnetic field.
