... that nanoparticle injection for improved CO 2 -foam mobility is an upcoming CCUS technology for mature fields. New experimental results show that 1) nanofluids remain stable at extreme salinities (up to 25 wt% TDS) with the presence of both monovalent and divalent ions; 2) both pressure gradient and incremental oil...

... pressure gradient axis flow rate inner string synchronous whirl Upstream Oil & Gas borehole pipe wellbore deformation compression contact point stiffness displacement string rotation friction pressure gradient side force Abnormal Tool-joint Wear while Drilling Reservoir Sections...

... Where r e is the drainage radius and Δp dd is the pressure drop (drawdown) through the entire reservoir. Approximation solutions for transient radial flow models exposed to a sudden pressure drop, Δp step , (step change in well pressure) show that the maximum pressure gradient at radius...

... Abstract Polymer gel is frequently used for conformance control in fractured reservoirs, where it is injected to reside in fractures or high-permeability streaks to reduce conductivity. With successful polymer gel conformance control in place, increased pressure gradients across matrix blocks...