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Stimuli Responsive Polymers in Oil and Gas Industries

Abstract: Primary cementing is one of the most important operations executed on the well in the course of oil and gas well construction. The cement is placed in the annulus between the rock formations of the wellbore and casing, to provide zonal isolation. The quality of the cement job has a direct impact on the economic longevity of the well throughout the life of producing oil and gas. The failure in the cement is typically observed at two operational stages, [1] at the time of the placement of the cement ― improper balancing of the pressures that allows gas and fluid influx into the cement-filled annulus and movement of pipes, and [2] during production, uneven distribution of forces on the cement sheath, generated from the pressure difference. The present research focuses on addressing the uniform distribution of forces exerted in the course of production on the cement sheath. A novel polymeric additive — stimuli responsive polymer — that facilitate molecular motions at sub-nanometer level in the cement sheath have demonstrated exceptional improvement in the mechanical properties of the cement. Sliding motions of the chemical constituents in the polymeric additive allow rearrangement of the network structure and thus it contribute toward resistance from the long-term stress-strain cycles. Stimuli responsive polymer has transformed brittle cement into tough cement without compromising compressive strength. Keywords: Stimuli responsive polymers; polyrotaxanes; cement; oil and gas well construction. Full Article: https://www.proceedings.iaamonline.or... Join us: https://www.iaamonline.org/