Indirect method measuring oil well debit

Features of distribution of temperature along the length of oil pipeline

“…The amount of heat lost by flow of an oil emulsion flowing during time τ d through the area of interest is expressed by the equation [14][15][16] ρ τ ,…”

“…Then, using Newton's cooling law [14][15][16], it is possible to determine amount of heat lost by a pipeline wall in a cooling medium with a temperature 1 t along dz in time τ d [16][17][18]: In order to determine average flow speed of a liquid in a round circle tube the parabolic Stokes law is used [19][20]…”