CPE 327 Reservoir Engineering I
Homework #7
Due Date: 12:00 PM on April 27th (Wednesday), 2016
1. A J-function relation can be seen in Figure 1. It applies for a limestone reservoir of permeability
100 md and 20% porosity. Assuming that the contact angle

Chapter 2 The properties of reservoir fluids
Natural Gases
Crude Oil Systems
Reservoir Water Systems
2.1 Natural Gases
A gas is defined as a homogeneous fluid of low viscosity and density that has no definite volume but expands to
completely fill the vess

CPE 327
Reservoir Engineering I
Homework #1
1. Calculate the mass in lb and density in lb/ft3 of methane gas contained at 68.05 atm and
20C in a cylinder with volume of 0.0906 m3. Assuming that methane is an ideal gas.
2. Given the following gas containin

CPE 327 Reservoir Engineering I
Homework #5
Due Date: 12:00 PM on April 8th (Friday), 2016
1. Two wells are located 2500 ft apart. The well pressure at the top of perforations (9332 ft subsea)
in well A is 4365 psia and at the top of perforations (9672 ft

CPE 327 Reservoir Engineering I
Homework #3
Due Date: 12:00PM on March 4th, 2016
1. Coring was performed for the Wilcox Sand of Altair Field at a depth of 8270 ft. One core plug
of 1 inch diameter and 2.5 inches length was cut from the whole core for the

CPE 327 Reservoir Engineering I
Homework #1
Due Date: 12:00PM on February 5th, 2016
1. Calculate the mass in lb and density in lb/ft3 of methane gas contained at 68.05 atm and
20C in a cylinder with volume of 0.0906 m3. Assuming that methane is an ideal g

CPE 327 Reservoir Engineering I
Homework #4
Due Date: 12:00 PM on March 23th (Wednesday), 2016
1. An oil reservoir has a porosity of 20% with a net payzone thickness of 100 ft and connate
water saturation of 25%. An electrical log run in the borehole at a

CPE 327 Reservoir Engineering I
Homework #6
Due Date: 12:00 PM on April 18th (Monday), 2016
1. Two glass capillary tubes of inside diameters (IDs) of 20 and 13 microns are used to test the
capillary rise by inserting them into a large water tank. The smal

CPE 327 Reservoir Engineering I
Homework #8
Due Date: 12:00 PM on May 2nd (Monday), 2016
1. A reservoir has been under waterflood for a few years. The relative permeability curves for
the reservoir are given in Figure 1.
(1) Determine the maximum possible

CPE 327 Reservoir Engineering I
Homework #2
Due Date: 12:00PM on February 22th, 2016
1. If the Sabine Field gas gravity is 0.65, calculate the compressibility factors from zero to
7000 psia at 160F, in 1000 psia increments.
a. Plot the compressibility fac

sP&
Tw4-
PULSE DECAY PERMEABILITY: ANALYTICAL SOLUTION
AND EXPERIMENTAL TEST
,
by
Thierry Bourbie and Joel Walls
Stanford Rock Physics Project
Department of Geophysics
Stanford University
Stanford, Ca 94305
.
. .
.
Introduction
Because of its usefulness i