MUD TANK AND PIT USE

The surface mud system consists of the flow line, active mud tanks, reserve mud tanks, trip mud tank, mud agitators, pumps, motors, solids- and gas-removal devices, mixing and shearing devices, and associated piping. The surface mud system can be considered to be composed of the following sections. Each section has unique agitation and suspension requirements. Please refer to Table 10.1 for TOR requirements for the compartments. Remember that TOR is an indication of how vigorously the fluid must move within the compartment.

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AGITATION EQUIPMENT FOR DRILLING FLUID

Many rigs use a combination of agitators and mud guns. To summarize
the preceding discussions on mechanical agitators and mud guns, a list of
pros and cons are presented to aid in the proper selection and application
of agitation equipment. The list is not necessarily complete but
will help both the designer and rig personnel consider both immediate
and long-term consequences of decisions.

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