laboratory investigation of the effect of carbon nanotubes used in polyacrylamide preformed particle gels on conformance control of high water production wells

The purpose of this study was to investigate the effect of carbon nanotubes (cnt) types used in preformed polyacrylamide particle gels (ppg) on the rate of water shut-off from oil wells with high water production. swelling ratio of pure polymer without nanofiller (ppg) and polymer with carbon nanotube (n-ppg) and polymer with acidic carbon nanotube (nc-ppg) in distilled water and brine has been studied. in order to verify the stability of the gels all samples under study were verified by tests of swell and thermal gravimetric analysis (tga). the results show that in n-ppg and nc-ppg, the cnt dispersed well in the ppg. the swelling ratio among all samples under study decreases in the following order: n-ppg, nc-ppg, ppg. tga results show that the thermal stability of all samples under study decreases in the following order: nc-ppg, n-ppg, ppg. uv-vis results also further support the above mentioned results. as a final conclusion n-ppg and nc-ppg are very suitable candidates for conformance control in high water production oil and gas wells.