5. The permeability of 160-acre formation drained by a single well is 15 mD. The well is heavily acidized to a permeability of 250 mD and a radius of 30 ft, and then completed. During well completion a 2 ft thick damaged zone developed in the vicinity of the wellbore. The permeability of this damaged segment is 4 mD. The wellbore radius is 0.5 ft. Calculate the average permeability of this drainage area.

5. The permeability of 160-acre formation drained by a single well is 15 mD. The well is heavily acidized to a permeability of 250 mD and a radius of 30 ft, and then completed. During well completion a 2 ft thick damaged zone developed in the vicinity of the wellbore. The permeability of this damaged segment is 4 mD. The wellbore radius is 0.5 ft. Calculate the average permeability of this drainage area.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.16P

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