Evaluation of a carboxymethylcellulose-based fluid loss additive derived from cocoa pod husks for high temperature and pressure conditions

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Since they have negative impacts on human health, public safety, and the environment, utilizing conventional chemical additives to control the qualities of drilling mud presents serious issues. Therefore, there is a significant need for alternative multifunctional bio-enhancer drilling mud additives that can help optimize drilling fluid specifications and increase its efficacy with the least possible negative impacts on the environment and the safety of the drilling workers. At working pressure and temperature of 600 psi (4137 kPa) and 150°C (302°F), respectively, and varied amounts of cellulose and carboxymethylcellulose (CMC) derived from cocoa pod husk (CPH) as fluid loss control additives, the performance of the mud has been examined. On the created water-based drilling fluid, rheological measurements were made. The filtrate volume changed by -29.66% and -52.41%, respectively, for 2 g and 7 g of CPH CMC powder at 30 minutes. Filtration characteristics values show that CPH CMC concentrations can successfully reduce filtering rate and enhance mud cake properties in a drilling operation. Rheology and filtration control, wellbore stability and strengthening, cuttings suspension, and thermal properties are some of the drilling fluid characteristics that the CMC may easily alter.