The combined efforts of geologists and petroleum engineers throughout the life of a hydrocarbon accumulation determine the way in which a reservoir is developed and depleted, and usually they have the highest impact on field economics.
Zajedničkim naporima geologa i naftnih inženjera širom sveta trajanje akumulacija ugljikovodika određuje način na koji se razvija i osiromašuje rezervoar, pa obično imaju najveći uticaj na polju ekonomije.