دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a theory of petroleum generation in which petroleum is thought to have formed from hydrocarbons trapped inside the earth’s crust when the earth was forming. See also Biogenic and Organic theories.

adj: produced by living organisms.

bacteria generated natural gas, found at shallow depths and in many water wells. Usually contains C14 isotope. See also thermogenic gas as a gas that has a biological origin but has been modified from the original organic state by time at temperature and

rocks such as coal resulting from decomposition of animal or plant deposition.

a theory of petroleum formation in which the petroleum is thought to have originated from plant and animal material that has undergone transformation from deep burial.

one of three naturally occurring isotopes of carbon. The half life of the C14 isotope makes it idea for determining the difference between thermogenic methane (C14 absent) and biogenic gas.