Figure 10. Location map of Gulf of Alaska for wells with overpressure. Overpressures have been observed in all wells drilled in the Gulf of Alaska. The top of overpressures is from depths of 6000 to 10,700 feet.
Shell No. 1 OCS-Y-0014 Block 111, 59 o53’05”N, 142o53’03”W, Gulf of Alaska, has overpressures seal approximately 7000-7320 feet. DST 7326-7331 feet, BHSIP 5820 psi. Potentiometic surface +5200 feet. (Assumed gradient 46.5 psi/100 feet.)