Question-1 A dry gas reservoir 1000 acre with a thickness of 35 ft and average porosity of 30% is connected with an aquifer. If a) after producing for 2 years aquifer starts to support the pressure calculate the recovery factor if average connate water saturation is 0.3 and the residual gas saturation is 0.15. initial formation volume factor is 0.00533 ft/SCF and after 2 years is 0.00677 ft/SCF. b) aquifer supports pressure as soon as production commences calculate the recovery factor with the required data being the same as in part a

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Question-1
A dry gas reservoir 1000 acre with a thickness of 35 ft and average
porosity of 30% is connected with an aquifer. If
a) after producing for 2 years aquifer starts to support the
pressure calculate the recovery factor if average connate water
saturation is 0.3 and the residual gas saturation is 0.15. initial
formation volume factor is 0.00533 ft'/SCF and after 2 years
is 0.00677 ft'/SCF.
b) aquifer supports pressure as soon as production commences
calculate the recovery factor with the required data being the
same as in part a
Transcribed Image Text:Question-1 A dry gas reservoir 1000 acre with a thickness of 35 ft and average porosity of 30% is connected with an aquifer. If a) after producing for 2 years aquifer starts to support the pressure calculate the recovery factor if average connate water saturation is 0.3 and the residual gas saturation is 0.15. initial formation volume factor is 0.00533 ft'/SCF and after 2 years is 0.00677 ft'/SCF. b) aquifer supports pressure as soon as production commences calculate the recovery factor with the required data being the same as in part a
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