Basic Safety Offshore

Basic Safety Offshore

SEISMIc SURvEy this method is based on the
natural phenomena of sound waves travelling at
various distances after reflections on earth-layers.
the sound waves are created by means of air guns
and will be reflected back to the surface by the
boundaries between different layers. Differences in
density cause differences in the reflection patterns.
hydro phones linked to computers scan an area
and the collected data is translated into a drawing.
geological specialists can then identify “Fields
of promise”. After a promising survey a drilling
unit may drill one or more appraisal (tests) wells.
Appraisal (test) drilling will prove the potential of
the field and determine if the field is economically

falck nutec

pdf