A review on bentonite and its applications in upstream industry

This review analyzes the properties, global production, and industrial uses of bentonite, a clay mineral predominantly consisting of montmorillonite. Bentonite, originating from volcanic ash, is known for its significant swelling capacity, plasticity, cation exchange capacity, and thixotropic properties. Bentonite is widely applied in drilling, environmental cleanup, construction, and pharmaceuticals. In the petroleum sector, the focus of this study, bentonite is essential, as it enhances viscosity, aids in the suspension of cuttings, and stabilizes wellbore holes in the formulation of drilling fluids. Furthermore, it serves as an ingredient in cement slurry, aiding well integrity and the mitigation of fluid loss. The efficacy of bentonite in waste containment and pollutant absorption underscores its significance in environmental conservation. The review also addresses challenges, such as temperature sensitivity and fluctuation in chemical composition, and investigates modification approaches to enhance its industrial performance. The study highlights the growing demand and potential developments for bentonite in sustainable practices.

کلیدواژه ها:

Bentonite ، Montmorillonite ، application ، Drilling Fluids ، Petroleum Industry ، Swelling Capacity