Method and apparatus for evaluating the expansion of shape memory polymer in well completions

Abstract

A downhole system for evaluating an expansion of a shape memory material (SMM) in a borehole. The SMM expands into an annulus between a work string and an annulus. A pulsed neutron gamma ray tool irradiates the borehole and formation with neutrons and detects gamma rays generated from the borehole in response to the irradiation. A processor receives inelastic gamma ray measurements and capture gamma ray measurements based on irradiating the borehole at a first location within the borehole after the SMM has been expanded into the annulus at the first location, estimates a ratio of a first quantity including at least the inelastic gamma ray measurements to a second quantity including the capture gamma ray measurements, at the location, and evaluates a degree to which the SMM has filled the borehole at the location based on a relation between the ratio measurement and a selected range.

Dependencies are inferred from the claim text.