The term "net pay" is one of the most controversial concepts in the petroleum industry. That's why I would like to have a general orientation or guidance of what "net pay" really means; thanks.
Hi Christian
I believe 'net pay' comes from the definition of a 'pay zone' in a hydrocarbon reservoir. That pay zone will be volume of a reservoir/trap with oil, when taking into account variations in porosity and compartments of various kinds in a reservoir. In addition, oil and gas can be mixed (GOR) so that you start producing gas (and sometimes water) before you expect it...thus the difficulty in estimating a net pay when we first start production. Have a look at classical Petroleum Reservoir books. They are usually very helpful.
Cheers, Tiago
Net pay is the total volume of hydrocarbons present within the reservoir interval
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