In this study, a large time series of TerraSAR-X Stripmap co-polarized ( HH-VV) Synthetic Aperture Radar ( SAR) imagery collected over the Taylor Energy oil platform site in the Gulf of Mexico is exploited to investigate this 13 year-long unconventional oil spill. The σCPD approach is used to estimate the polluted area along time. In addition, a sensitivity analysis is undertaken to point out the dependence of σCPD to imaging ( noise floor, incidence angle ) and environment ( sea state ) parameters. Experimental results demonstrate that σCPD can be effectively used to monitor the Taylor Energy oil spill, estimating the polluted area. For the TSX SAR data avail-ability most dense period ( year 2013) , a daily spill of about 2.2 km2 is observed in average, even though high variability ( about 2.0 km2 ) is experienced due to the un-conventional characteristics of the spill.