CENTRIFUGAL PUMP AND STANDARD DRILLING EQUIPMENT

Hoppers, mud guns, desanders, desilters, degassers, and triplex pumps requiring supercharging all have one thing in common: they require 76–80 feet of inlet head to operate as designed. Exceptions do exist, and the equipment manufacturer should be consulted. This simplifies the job of sizing centrifugal pumps. Since most applications in drilling systems require 80 feet of head at the inlet of the equipment, knowledge of volume needed by each piece of equipment is required. Following are standard flow rates when equipment has an 80-foot inlet head:

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BULK ADDITION SYSTEMS

A variety of systems are available to transport and contain large volumes
of dry bulk chemicals. Commonly known as P-tanks (pressure tanks),
these vessels are usually mounted upright and connected via piping to
a mud mixing hopper. They may also be mounted remote from the hopper and deliver material through a piping system by pneumatic force. Other designs mount the tanks above the hopper and gravity-feed the material. These tanks accommodate most dry bulk chemicals, including barite, bentonite, and cement.

Figure 1. Specialized shearing pump

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