Method for preventing fluid loss during drilling

摘要: A method is disclosed for preventing loss of aqueous drilling fluid to porous formations penetrated by a well bore during operations oil and gas. The utilizes readily available pelleted cottonseed hulls as the lost circulation material which added pumped down bore. are composed hulls, meal, bentonite, residual amount lint surface active agent. agent heated in presence steam compressed form pellets. Because pellets form, they do not expand when until may also contain oil. known widely used dairy cattle industry feed material.