Jun 08

Mud tank design for solids control system is very important. The surface pits that comprise the active circulating systems should be designed to contain enough usable mud to maintain mud properties and to fill the hole during a wet trip at the rig’s maximum rated depth. Usable mud is defined as the mud volume which can be pumped before suction is lost. For example, a typical 10,000 ft well will normally require a minimum active system tank volume of 500 bbl

Tank Shape Design

To maximise solids suspension in drilling mud and usable volume, the best tank shape is round with a conical bottom. Next best is a square or rectangular shape with a v-bottom. The least preferred shape is the square or rectangular box with a flat bottom. The ideal tank depth is equal to the width or diameter of the tank. This design provides sufficient pump suction head and is best for complete stirring.

Tank Compartment Equallsation

Equalisation height between compartments will depend upon the duty of the compartment. As a rule, an adjustable equaliser is needed only between the solids removal section and the addition suction section. High equalisation between the solids removal and addition suction sections also increases the ability to detect volume changes due to influx or losses to formation. Because the volume of the solids removal section remains constant, any volume change is apparent as a liquid level change in the addition suction section only. This increases the sensitivity to volume fluctuations since the change in fluid level will be more pronounced per unit volume.

A tank design will including sand trap, equipment arrangments, etc. A tank design is very important for a complete line solids control system. Please contact GN Solids for inquiry freely


written by GN Shale Shaker \\ tags: , , , ,

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