Good solids-removal equipment operation, including that of shale shakers, helps prevent these problems.
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SOLIDS CONTROL GUIDELINES
ELECTRIC MOTOR APPLICATIONS ON OIL RIGS
Continuous-duty electric motors are an integral part of a drillings rig’s solids-control and processing systems. Centrifugal pumps that feed hydrocyclones, circulate mud for mixing, and transfer mud to and from reserve and also into the trip tank are powered by electric motors. Shale shakers, mud cleaners, centrifuges, and pit agitators are also driven by electric motors.
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SOLIDS REMOVAL EQUIPMENT EFFICIENCY IN AN UNWEIGHTED DRILLING FLUID
Situation: NoProfit Drilling Company is drilling 100 bbl of hole daily in a formation with 15% porosity. For four consecutive days, 400 bbl of discards and fluid were captured each day in discard tanks. The pit levels remained constant, but some drilling fluid was jetted to the reserve pits daily to keep the pits from overflowing. The unweighted drilling fluid weighed 9.4 ppg daily and contained 2%vol bentonite
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SOLIDS REMOVAL EQUIPMENT EFFICIENCY
The term solids removal equipment efficiency is frequently used to describe solids-control equipment performance. This term may be somewhat confusing. American Petroleum Institute (API) Recommended Practice (RC) 13C, ‘‘Solids Control,’’ refers to the solids-removal process in terms of system performance.
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