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Measuring displacement pressure using mercury injection (view source)
Revision as of 20:14, 26 April 2014
, 20:14, 26 April 2014→Values of pd
[[:file:evaluating-top-and-fault-seal_fig10-48.png|Figure 1]] shows a typical mercury capillary curve for a sandstone. Mercury is first forced into the largest connected pore throats. Saturation increases with increasing pressure as mercury continues to be forced into progressively smaller pore throats.
[[:file:evaluating-top-and-fault-seal_fig10-48.png|Figure 1]] shows a typical mercury capillary curve for a sandstone. Mercury is first forced into the largest connected pore throats. Saturation increases with increasing pressure as mercury continues to be forced into progressively smaller pore throats.
==Values of p<sub>d</sub>==
==Values of displacement pressure>==
Displacement pressure (P<sub>d</sub>) is defined as the pressure necessary to form a continuous hydrocarbon filament in the pore space of the seal. It is commonly inferred from the injection pressure at 10% saturation<ref name=ch10r67 /> for two reasons:
Displacement pressure (P<sub>d</sub>) is defined as the pressure necessary to form a continuous hydrocarbon filament in the pore space of the seal. It is commonly inferred from the injection pressure at 10% saturation<ref name=ch10r67 /> for two reasons: