Notwithstanding once same occurred, it is necessary to restore fluid's original properties. Preventive treatment is the method for avoiding contamination. As determinated by this monitored schedule, the alterations in fluid's behaviour will show in advance the type, degree of contamination and the treatment required for this kind of fluid. The control of drilling fluid's properties, by periodical physical and chemical tests, permits to keep these properties within programmed time schedules. The knowledge of physical-chemical aspects of subsurface formations, especially in recently discovered areas, is limited. The well drilling activities require a swift action in deciding due to factors mainly concerned with security and cost. The aim of the present system is to aid in taking decisions for solving the occurrence of contamination of the employed drilling fluid during oil well drilling.īy contaminant there is understood any naturally occurring or manufactured material, which is part of the fluid composition without any deliberate intention, altering one or more of the properties of same.
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