Coiled tubing (CT) was employed to perforate a condensate well located in gas field part of Malay Basin. This conveyance method was selected to address the well’s deviation in tough conditions, including high pressure, elevated bottomhole temperature (BHT) with substantial CO2, H2S, and mercury. A comparison of actual and expected surface forces was performed with aim to improve the workover operational reliability of future CT interventions. All force components along the CT string including weight, axial, wall contact, friction and normal forces is taken into consideration for the CT intervention feasibility. This tubing force analysis included in the study to measure on surface as pulling or running weights. Study of actual against field corrected coefficient of friction (CoF) is based off five different CT runs with different objective but identical CT unit and wellbore. This study will help identify decisive factors influencing the CoF under different operational mode. Numerical modelling was undertaken by using CERBERUS, a leading CT intervention simulation software from National Oilwell Varco. Actual run results indicate variations from simulation, where generic run in hole and pull out of hole (RIH/POOH) CoF was set at 0.3/0.3. In these interventions, RIH/POOH CoF was measured at 0.18/0.27 and 0.06/0.23 for sand cleanouts, 0.11/0.24 for logging, 0.15/0.26 and 0.11/0.38 for perforation. The field corrected CoF enables a more refined Tubing Force Analysis (TFA) for use in future CT modelling. The study found a boundary by opening up new possibilities for less expensive CT intervention with reduced equipment dimensions, increased gun length per run, boost maximum depth capability besides adhering to platform loading constraints and footprint availability.