Formation damage from fines migration can occur during stimulation operations, particularly in sandstone. To prevent fines migration and clay swelling, various clay stabilisation chemical treatments have been designed.
ClayBrake™ is a suite of clay control solutions that can help stabilise clay-sensitive formations and prevent fines migration. These ClayBrake™ solutions were designed for use in applications such as acidising, gravel packing, and fracturing treatments, as well as in coiled-tubing operations. Further laboratory testing is recommended to determine which clay control product performs best with the fluid design and to determine the optimal loadings.
ClayBrake™ 220 is a biodegradable blend of salts, which exhibits low toxicity and is used as potassium chloride (KCl) substitute. ClayBrake™ 220 has been effectively used in sandstone reservoirs to prevent clay swelling and in shale formations to prevent formation softening and associated proppant embedment.