Application of the sludge in the scleroglucan to the drilling of wells a large diameter.

摘要

It has been found that the addition of scleroglucan, in particular of unrefined scleroglucan, to water employed as a drilling fluid for drilling wells requiring a high flow rate makes it possible to limit the leaching of the formations and improves the removal of the cuttings. Application to the drilling of large-diameter wells.