Characterizing CO2 residual trapping in-situ by means of single-well push-pull experiments at Heletz, Israel, pilot injection site – experimental procedures and results of the experiments

•Two dedicated field experiments carried to quantify the CO2 residual trapping in-situ at 1.6 km depth.•The experimental procedures and results of these experiments are presented.•Hydraulic withdrawal test as a characterization method was robust and gave a clear signal.•Tracer experiments can give more detailed information of CO2 residual distribution but are more complicated to carry out.