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Methods for Detecting Underground Oil
Ivor Ellul presently serves as the chief executive officer of Knowledge Reservoir, a company he founded in 1999. In this role, Ivor Ellul applies his expertise in advising the company's clients in areas of upstream oil and gas exploration and production. There are a variety of techniques used in oil and gas exploration. Most relate to the interpretation of data received by reflecting seismic waves off the subsurface strata. This provides an idea of the structure of the subsurface which, in turn, reveals where potential hydrocarbon traps may exist. Seismic waves are created from a sound source which may be an explosion or vibration of some sort. The reflection is picked up by cables (onshore) or streamers (offshore) with integrated geophones. Once the data are collected, extensive processing takes place to develop a picture of the subsurface in the region where the date have been collected. Once maps of the subsurface have been developed, these are studied carefully by geologists and geophysicists who will decide whether there is any potential for hydrocarbon accumulation in economically viable quantities. If so, the geoscientists will decide where to drill one or more exploration wells.