What is it about?
The subsurface pore pressure acts in a cascade form. Sand carry a linear gradient whereas, shale behave exponentially, that creates the pressure differential that causes drilling and pressure modeling challenges.
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Why is it important?
Exploration wells for oil and gas potential are not created equally. This research explains the impact of subsurface sedimentation and structure on the cost of drilling and potentially exploit a hydrocarbon field.
Perspectives
This paper is an eye openers for geologists and engineers who are exploring and exploiting hydrocarbon resources. It elaborate on the exploration and drilling challenges and risks due to the disparity between shale (seal) and sand (reservoir) subsurface pressures.
Dr Selim S. Shaker
Read the Original
This page is a summary of: Causes of disparity between predicted and measured pore pressure, The Leading Edge, August 2002, Society of Exploration Geophysicists,
DOI: 10.1190/1.1503188.
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