Over Pressure Prediction (2
days)
Anomalous pressures typically in excess of expected hydrostatic
values cost the industry hundreds of millions of dollars a year. Our ability
to predict pressures has improved with time, dating to the early work of
Eaton to modern routine services offered by contractors. An algorithm designed
to predict pressure must be calibrated against normal expectations for
a particular geological setting. This calibration is fundamental to any
scheme. The most important aspect of pore pressure prediction is the clarity
of the dependent variable observation. A typical variable is seismic velocity.
You will understand what drives the over pressure signature in rocks and
sediments. You will learn of resolution and possible ancillary attributes
for pressure detection. Standard methods will be discussed. Future or emerging
technologies will be discussed. You will also develop an understanding
of the over pressure mechanisms and the effects on associated properties
such as porosity and temperature.
Topics to be covered
1) Review of over pressure concepts (mineralogic
phase transitions, compartments, etc.)
2) Review of pore pressure prediction methods (post-
and pre-diction)
3) Review of normal compaction trends
4) Seismic models for pore pressure prediction
5) Emerging technologies for pore pressure prediction
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