This work presents a case study for the acquisition of in-situ stress data on a cased hole well in Neuquén Basin Argentina with microfrac tests. This stress data was required for calibration of the geomechanical model. The well on this case study was selected for this data acquisition since a workover was planned to abandon old production intervals. The original plan was to evaluate the stress on five intervals: top sealing zone, top reservoir, middle sealing zone, lower reservoir with polymer alteration and lower reservoir without polymer alteration. Since this evaluation was done on a cased hole, the evaluation process included: cement/casing evaluation log, to confirm zonal isolation of the suggested intervals; 0.5 m perforations with high density/deep penetration charges (19 shots) to ensure wellbore communication with reservoir; and finally, the in-situ stress test using a wireline straddle packer tool for the microfrac operation. This tool is capable of taking several microfrac stations per descent with multiple cycles on each station to confirm the stress measurements. A total of four stations were completed on the two sealing zones, the top reservoir, and the lower reservoir with polymer alteration. Three or four microfrac cycles were made on each station including step rate test for three of them. Using three interpretation methods for the fracture closure analysis: Square root of time, G-function and log-log plot; it was possible to confirm that the minimum horizontal stress on this formation goes from 0.342 to 0.555 psi/ft for the different intervals. The in-situ stress measurements obtained with the microfrac stations provided the information needed to fully calibrate the geomechanical model of the region, being able to see the different stresses on the sealing and reservoir formations. This case study also confirms that is possible to complete microfrac test in cased hole, being the first time this measurement is performed in such well type at least in Latin-America. And that wells planned to be workover or abandoned can efficiently be used to obtain in-situ stress measurements during workover