Yusrizal, M.Z. and Santoso, A.P. 2021. Validation of The Cullender and Smith Method for Determining Pressure Loss in The Tubing in Gas Wells. Journal of Petroleum and Geothermal Technology. 2, 2 (Nov. 2021), 87–97. DOI:https://doi.org/10.31315/jpgt.v2i2.5657.