Open-ended steel tubular piles are used as the permanent foundation for offshore jacket platforms. During the installation process, piles may initially penetrate up to certain depth below seafloor under self-weight. After placing pile driving hammer, the penetration of pile may further increase due to combined weights of pile and hammer. Such initial and uncontrolled pile penetration is termed as run-down of pile. Realistic prediction of run-down depth is a pre-requisite for successful design and safe installation of piles in the offshore. Ratna Field is located off the west coast of India about 130 km south west of Mumbai. During the installation of 20 (twenty) piles in 5 (five) platforms in the field at water depths of about 40–50 m, run-down observed in case of the piles was significantly deeper (up to maximum depth of 83 m below seafloor) compared to run-down data from other areas of Indian offshore. A study was carried out using the pile installation records, soil data, and the pile-hammer specifications. Results of analysis are presented in the paper with comparison of calculated versus actual run-down depths of piles in the platform sites. The results of the study demonstrate that using conventional approach for assessment, run-down depth range, and possibility of occurring large difference in depths of pile run-down could be predicted. Analysis of the cases highlights the importance of assessing the full range of run-down depths and to consider the risk of deep run-down during designing and planning for installation.