16th June 2020


What are the three categories of reserves?

There are 3 main reserve categories under the Society of Petroleum Engineers (SPE) definition: proved; probable and possible reserves. For an oil or gas deposit to be classified as “reserves,” you first need to establish technical and commercial certainty of extraction using existing technology.

Similarly, what are 2p reserves?

The term 1P is frequently used to denote proved reserves, 2P is the sum of proved and probable reserves and 3P the sum of proved, probable and possible reserves. The best estimate of recovery from committed projects is generally considered to be the 2P sum of proved and probable reserves.

One may also ask, what does oil reserve mean?

Oil reserves are an estimate of the amount of crude oil located in a particular economic region. Oil reserves must have the potential of being extracted under current technological constraints. For example, oil pools situated in unattainable depths would not be considered part of the nation's reserves.

How are oil reserves calculated?

The classic way to estimate the size of an oil or gas field is to create a circle of drills around the first well, and move these drills ever outwards into larger circles, until the extent of the field is gauged. But accurately estimating the volume of the reservoir remains difficult.

How long will US oil reserves last?

At our current consumption rate of about 20 million barrels a day, the Strategic Petroleum Reserve would last only 36 days if we were faced with a situation where the oil had to be released all at once (however, only 4.4 million barrels a day can be withdrawn, extending our supply to 165 days).
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