Can polyacrylamide/clay nanocomposite be used as drilling fluid additive?

The troublesome shale formations need special formulation of drilling fluids having high shale inhibition characteristics to mitigate wellbore instability problems. In the present study, polyacrylamide/clay nanocomposite (PANC) was synthesized and used as drilling fluid additive.

What are the advantages of polyacrylamide compared to bentonite?

Further, it is a water-soluble, easily mixed dry granular, and non-gelling agent. Compared to bentonite, the modified polyacrylamide can contribute to many environmental and operational advantages such as a smaller site footprint, ease of mixing, cheaper disposal cost, and less pollution.

Can polyacrylamide be used for drilling?

However, polyacrylamide with high molecular weight can be a good candidate at lower concentrations to meet the drilling requirements. The viscosity of polyacrylamide at all concentrations decreases with increasing temperature, according to Magzoub et al. (2021).

Does barite/polyacrylamide nanocomposite affect water-based drilling fluid?

Roodbari and Sabbaghi (2021) studied the effect of barite/polyacrylamide nanocomposite in the water-based drilling fluid, which showed the incline of its fluid viscosity and the reduction of fluid loss and filter cake thickness. Besides, Kuma et al. (2020) optimised the polyacrylamide-based drilling fluid with the inclusion of hematite.

What is modified polyacrylamide drilling fluid?

Indeed, modified polyacrylamide drilling fluid has been proven to be of great interest for use in the construction of bored piles and diaphragm walls in recent years. 1. Introduction Drilling fluid is a critical component in exploration and excavation, classified into water-based, oil-based, synthetic-based, and gas-based.

Is bentonite a good drilling fluid?

Bentonite has superior rheological properties that can support the bored pile foundation. Further, bentonite provides better borehole stability with a thin drilling mud cake. However, bentonite-based drilling fluid is unfeasible due to HPHT or ultradeep well operations. This situation can contribute to its flocculation and degradation.