Application of synthetic polymer nanocomposite in oil and gas well cement slurry to prevent gas migration and control shrinkage and cracking

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 new synthesized butadiene-CNT polymer nanocomposite latex. The optimized cement in these experiments has been exhibited the inherited combination behavior from the flexible characteristics of the polymer matrix and the mechanical features from the carbon nanotubes. Feedback of the super-elastic behavior of carbon nanotubes has been manifested by a 75% increase in modulus of elasticity and a 48% increase in flexural strength in cementitious samples reinforced with polymer nanocomposite latex. Improvement of surface tension by polymer latex in 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 minutes for gelatinized cement, thereby reducing the risk of gas migration during the mentioned critical period for cement slurry.