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- W2091853587 abstract "Abstract Improper planning and execution of deepwater drilling programs can lead to high costs and unsafe conditions. Proper well planning requires reliable estimates of the expected pore fluid pressure and formation strength prior to drilling. Such pressure predictions are based on integrated seismic and offset well data. A new, rock model-based approach especially suited for deepwater pore pressure imaging is introduced here and applied in an example of a deepwater Gulf of Mexico well. P- and S-velocities were determined both at an offset well and for the future drilling location, using prestack seismic full waveform inversion. Both predicted velocities were later verified with log measurements. Using the new model, a significant pore pressure increase at depth was predicted before drilling the well and verified while drilling (Figure 1). For the entire well, the predicted and measured pore pressure gradients agree within half a pound per gallon equivalent mudweight (Figure 1). The shear velocity, and the extracted shear modulus, proved to be excellent indicators of low effective stresses, corresponding to overpressured formations (Figure 2)." @default.
- W2091853587 created "2016-06-24" @default.
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- W2091853587 date "2001-09-30" @default.
- W2091853587 modified "2023-10-16" @default.
- W2091853587 title "A New Petrophysically Constrained Predrill Pore Pressure Prediction Method for the Deepwater Gulf of Mexico: A Real-Time Case Study" @default.
- W2091853587 cites W1971748665 @default.
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- W2091853587 doi "https://doi.org/10.2118/71347-ms" @default.
- W2091853587 hasPublicationYear "2001" @default.
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