I am not sure of the question. However you can find worked out examples in Applied Drilling Engineering available from the Society of Petroleum Engineering- see related link.

S. Kumar has written:

'Gas production engineering' -- subject(s): Gas drilling (Petroleum engineering), Gas engineering

George V. Chilingar has written:

'Probability in Petroleum And Environmmental Engineering'

'Origin and prediction of abnormal formation pressures' -- subject(s): Reservoir oil pressure, Oil well drilling, Gas well drilling

'Drilling and drilling fluids' -- subject(s): Oil well drilling, Drilling muds

Norman J. Hyne has written:

'Geology for petroleum exploration, drilling, and production' -- subject(s): Petroleum, Prospecting, Petroleum engineering, Geology

'Dictionary of petroleum exploration, drilling & production' -- subject(s): Dictionaries, Petroleum, Petroleum engineering

'Nontechnical guide to petroleum geology, exploration, drilling, and production' -- subject(s): Prospecting, Petroleum, Petroleum engineering, Geology

Krupp Essen is a large German company engaged in many engineering fields.