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Basic Knowledge
1.4 Looking for oil
  • Detailed description

Geophysicists detect oil well by calculating the sound wave return time. They use computer to synthetic underground face figure through date processing. If the oil migration way and direction can be determined accurately by geophysicist, the possible exist reservoir can be founded. How can we know the oil migration way and direction? The petroleum geology research tell us that the oil second migration way and direction closely relate to underground geological fault structure and carrier strata property or continuity. Geophysicists and geologists provide us detail underground geologic outline by using shock wave detection technology and studying stratum variation and structure. Through it we can know the most possible oil migration stratum and fault, and the cover layer and trap which can prevent and seal up oil gas.
Geochemists tell us which oil strata the oil comes from by testing carbon and hydrogen isotope or biological indicators. And teach us to track source strata and oil migrate direction just like criminal polices track criminals by DNA and fingerprint. Some biological indicators properties and content tell us whether the kerogen is mature or not and oil is generated or not. In addition, we can know how far the oil migrated by testing the content of polar organic molecules in oil. This is because that the polar organic molecules are easy to be absorbed by stratum in the process of migration.