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Sand Cleaning – Mechanisms of Mechanical Scrubbing (B-FSM-140)

The cleaning system we will detail in this module is designed around mechanical scrubbing. It is a compact package specifically targeting offshore oil & gas facilities.

Mechanical scrubbing to remove adsorbed oil from sand particles takes place through three concurrent mechanisms.

Shear – High velocity water interacting with particles to physically shear oil from the sand particle

Abrasion – Impact of the oil coated sand with the cleaning equipment (i.e. pipe wall, valve components, pump parts, and cyclone internals).

Attrition – High concentration of sand particles in a slurry interacting with each other, where the interaction physically scrubs oil from the surface of the sand particles

References:

  1. Rawlins, C.H. and Wang, I. 2001. “Design and Installation of a Sand-Separation and -Handling System for a Gulf of Mexico Oil Production Facility”. SPE Production and Facilities, August, pp. 134-140. https://doi.org/10.2118/72999-PA
  2. Rawlins, C.H. 2019. “Enhanced Production Through Surface Facilities Sand Management.” SPE Distinguished Lecturer presentation. Link here

Next week I will continue discussion on cyclonic sand cleaning system design.

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