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 is the maximum amount absorbed by polyacrylamide (C HPAM)?

The solubility test results confirmed the maximum amount absorbed by polyacrylamide ( [C HPAM] = 66.42 g/L) in order to avoid aggregation, gelification, and enhance the drilling mud by utilizing the prescribed contents. 1. Introduction Currently, water-soluble polymers are very important for many industrial applications [1, 2].

What is partial hydrolyzed polyacrylamide (HPAM)?

Partially hydrolyzed polyacrylamide (HPAM) is a water-soluble polymer material used in oil fields [18, 19]. It usually has a linear structure with high molecular weight and is obtained by partial hydrolysis of PAM or by copolymerization of sodium acrylate with acrylamide .

Why is HPAM used as a lubricant mud?

Furthermore, HPAM is traditionally used with KCl as a polymer, which acts by encapsulation of clay , at very high concentration, for the coating of the clays, improving the load capacity of the overburden and functioning as power lubricant mud.

Do modified CMC & PHPA polymer drilling fluids increase rheological properties?

Kuma et al. investigated modified CMC and PHPA polymer drilling fluids with NaCl and KCl and haematite mineral where KCl and NaCl acted as great swelling inhibitors for drilling muds, while haematite just slightly increased the rheological properties on CMC–bentonite mud and did not have much effect on the PHPA–bentonite mud .

Can HPAM be used in water-based mud?

The rheological tests confirmed the pseudoplastic behavior of all formulations and the effect of incorporating salts and bentonite on the behavior and reaction of HPAM under different conditions. The results demonstrated the capability of using HPAM under various conditions in water-based mud.