pdf: http://www.ipt.ntnu.no/~stanko/files/Courses/POFE_UEM/2018/Notes/20181031.pdf
video: http://www.ipt.ntnu.no/~stanko/files/Courses/POFE_UEM/2018/Videos/20181031.mp4
files: http://www.ipt.ntnu.no/~stanko/files/Courses/POFE_UEM/2018/Class_exercises/Day_3_pressure_Transverse_dry_gas_well.xls