How do we discover the geology of million years ago for finding the Hydrocarbons?

Well, this is how we come to learn about the different tools used by people in the oil and gas industry in order to discover where the oil can be hidding… And the seismic surveys and their correct interpretation, have turned to be the most widely used and practical method to discover the different characteristics of the geology down there, as previous stage to get physically in the subsurface by drilling any kind of perforation or well.

If some company is interested on discovering oil at an offshore location, they would use a Survey Vessel carrying a source of energy that will produce some waves (acoustic energy) to be directed to the ground and that will travel through the different layers of sediment previously deposited and then travel back with a different amount of energy to a receiver device, which will produce the seismic survey.

Once this has been done, we will get something like this:

Once they have those images of a subsurface section,  they need to be interpreted in geological terms, and this is by means of the theory of waves propagation and the stratigraphical concepts applied to discover what depositional system occured at each particular depth and how can the different types of rock be distributed in space, to identify which ones are potential oil and/or gas reservoirs that can be further explored by drilling an exploratory well, often called a ‘Wild Cat’, as will be discussed in our drilling engineering section.



  1. Pingback: The Oily Blog | Seismic Stratigraphy for Reservoir Characterization – Part I

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