Absolute permeability of a core sample is being measured by water-flooding. The core sample is mounted in a transparent cylindrical tube, as shown in the figure below, and the air-water surface is monitored as function of time. The tube is placed in a vertical position and the water is assumed to flow through the whole core sample, evenly distributed over the surface. Calculate the absolute permeability of the sample when the air-water surface uses 400 seconds to move 18 cm.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Hi! Question is shown in the picture. It is required to find absolute permeability.

The answer is: 1 Darcy

1. Absolute permeability of a core sample is being measured by water-flooding. The core
sample is mounted in a transparent cylindrical tube, as shown in the figure below, and the
air-water surface is monitored as function of time. The tube is placed in a vertical position
and the water is assumed to flow through the whole core sample, evenly distributed over
the surface. Calculate the absolute permeability of the sample when the air-water surface
uses 400 seconds to move 18 cm.
Water
100 cm
82 cm
Core sample
2 cm
q
Additional data:
Density of water is 1 g/cm³
Water viscosity is 1 cP
Gravitational constant is 980 cm/s²
Thickness of the core sample is 2 cm
Transcribed Image Text:1. Absolute permeability of a core sample is being measured by water-flooding. The core sample is mounted in a transparent cylindrical tube, as shown in the figure below, and the air-water surface is monitored as function of time. The tube is placed in a vertical position and the water is assumed to flow through the whole core sample, evenly distributed over the surface. Calculate the absolute permeability of the sample when the air-water surface uses 400 seconds to move 18 cm. Water 100 cm 82 cm Core sample 2 cm q Additional data: Density of water is 1 g/cm³ Water viscosity is 1 cP Gravitational constant is 980 cm/s² Thickness of the core sample is 2 cm
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