how is the concept of the doppler effect employed in finding oil? what instrument is used? plz note references

Answer 1

The task of finding oil is assigned to geologists, whether employed directly by an oil company or under contract from a private firm. Most commonly, they use seismology, creating shock waves that pass through hidden rock layers and interpreting the waves that are reflected back to the surface.

In seismic surveys, a shock wave is created by one the following methods:

1) Compressed-air gun - shoots pulses of air into the water (for exploration over water)
2) Thumper truck - slams heavy plates into the ground (for exploration over land)
3) Explosives - drilled into the ground (for exploration over land) or thrown overboard (for exploration over water), and detonated

The shock waves travel beneath the surface of the Earth and are reflected back by the various rock layers. The reflections travel at different speeds depending upon the type or density of rock layers through which they must pass. The reflections of the shock waves are detected by sensitive microphones or vibration detectors -- hydrophones over water, seismometers over land. The readings are interpreted by seismologists for signs of oil and gas traps.

Answer 2

I dont know exactly, but i guess that you use a radar to check if it could be oil in the soil.

You can observe the doppler effect when an ambulance comes and the goes. The sounds frequence changes.

Ana