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* γ cos θ = 27 dynes/cm (26 dynes/cm from approximations in preceding section)
* γ cos θ = 27 dynes/cm (26 dynes/cm from approximations in preceding section)
Substituting these values into the above equation results in h [[length::( ft]]) = 176/R<sub>bt</sub> (μ). All that is left is to estimate R<sub>bt</sub>.
Substituting these values into the above equation results in h = 176/R<sub>bt</sub> (μ). All that is left is to estimate R<sub>bt</sub>.
==Estimating r<sub>bt</sub>==
==Estimating r<sub>bt</sub>==
==Weyburn oil column height==
==Weyburn oil column height==
If R<sub>bt</sub> = r<sub>10</sub> = 0.4μ and h = 113 ft/R<sub>bt</sub>, then the estimated oil column is [[length::283 ft]] [[depth::(86 m]]). If R<sub>bt</sub> = r<sub>35</sub> = 0.1μ, then h = [[length::892 ft]] [[depth::(272 m]]).
If R<sub>bt</sub> = r<sub>10</sub> = 0.4μ and h = 113 ft/R<sub>bt</sub>, then the estimated oil column is 283 ft (86 m). If R<sub>bt</sub> = r<sub>35</sub> = 0.1μ, then h = 892 ft (272 m).
==Using estimated oil or gas column heights==
==Using estimated oil or gas column heights==
Hannon<ref name=ch09r24 /> calculated only [[length::100 ft]] [[depth::(30 m]]) of [[seal capacity]] for this field. His calculations assumed a breakthrough pressure of 10-15 psi (69-103 kPa), based on “a multitude of capillary pressure curves” that he did not document. Yet we can estimate several reasonable breakthrough pressures from any given capillary pressure curve, depending on the assumed nonwetting phase saturation.
Hannon<ref name=ch09r24 /> calculated only 100 ft (30 m) of [[seal capacity]] for this field. His calculations assumed a breakthrough pressure of 10-15 psi (69-103 kPa), based on “a multitude of capillary pressure curves” that he did not document. Yet we can estimate several reasonable breakthrough pressures from any given capillary pressure curve, depending on the assumed nonwetting phase saturation.
==See also==
==See also==