Lead and Prospect Assessment

Prospect studies

Once it has been determined that a prospect warrants further investment towards detailed investigation, an appropriate suite of measurements and studies is selected to determine the size and viability of the prospect.

Geophysical data helps to image structures below obstructive features such as salt, define reservoir extent, evaluate formation characteristics, and reduce uncertainty concerning hydrocarbon content.

Prospect studies address essential questions about subsurface structures, potential migration pathways, and reservoir targets to create an appropriate solution.

Basin-scale images identify prospects beneath salt or other "hard-to-see-through" features. Borehole images provide important structural and stratigraphic information concerning reservoir, seal, and overburden rocks to reduce drilling uncertainty. Electromagnetic and sonic-based images help to distinguish resistivity anomalies from background resistivity and to identify possible pay between existing wells.

The Reservoir View

Once the first well is drilled, appropriate downhole measurements can be incorporated into the reservoir model to determine the reservoir rock volume ranges and estimate recoverable hydrocarbons. Adjustments to the  structural mapping can also be made to reduce the uncertainty of the model, and indicate if additional seismic surveys are needed.

The First Well

Information from the first well, e.g. real-time velocity data collected during drilling of the wellbore, can be incorporated into reprocessing of the seismic data to refine the image and  redefine the well path if necessary. Additional information acquired in the wellbore can also be plugged back in to the geological model to adjust chance of success for future wells.

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New Acquisition Techniques Uncover Unexplored Blocks

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