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→Material balance estimation for gas
The material balance technique for calculating gas reserves, like material balance for oil, attempts to mathematically equilibrate changes in reservoir volume as a result of production. The basic equation is
The material balance technique for calculating gas reserves, like material balance for oil, attempts to mathematically equilibrate changes in reservoir volume as a result of production. The basic equation is
:Weight (or SCF) of gas produced = weight (or SCF) of gas initially in the reservoir – weight (or SCF) of gas remaining in the reservoir
:<math>\text{Weight (or SCF) of gas produced} = \text{ weight (or SCF) of gas initially in the reservoir} - \text{ weight (or SCF) of gas remaining in the reservoir}</math>
The equations used to calculate OGIP are
The equations used to calculate OGIP are