Application of a Synthetic Polymer Nanocomposite Latex in a Wellbore Cement Slurry for Gas Blockage Functions

Abstract

Commercial synthetic polymers are a professional approach to creating versatile new materials with high-performance classes. This research focuses on controlling gas migration within cement in the early stages of cement setting through a newly synthesized butadiene–carbon nanotube (CNT) polymer nanocomposite latex. The optimized cement in these experiments exhibits the inherited combination behavior from the flexible characteristics of the polymer matrix and the mechanical features from the carbon nanotubes. The feedback of the superelastic behavior of carbon nanotubes is indicated by a 75% increase in the modulus of elasticity and a 48% increase in the flexural strength in cementitious samples reinforced with the polymer nanocomposite latex. The improvement of surface tension by the polymer latex in the slurry and enough tensile strength during cement hydration have positive control and compensatory effects in early shrinkage and resistance to the development of fissures and cracks in the hardening cement. Optimized cement slurries containing polymer nanocomposite additives dramatically reduce the critical transfer time window to about 40 min for gelatinized cement, thereby reducing the risk of gas migration during the mentioned critical period for the cement slurry.

Dispersion Mechanism of Styrene–Butadiene Rubber Powder Modified by Itaconic Acid and Its Toughening Effect on Oil Well Cement

“…Keerthika examined the role of anchoring ability of butyl/phenyl groups in the block copolymer for providing redispersibility and stability of the latex, by comparison with surfactants devoid of anchoring units [ 13 ]. In addition to assisting dispersion with admixtures, it has also been reported that carbon nanotubes were modified with butadiene according to the anion-based functionalization method to achieve good dispersion [ 14 ].…”