Chapter 3
The General Material Balance Equation
1/3
The concept of material balance is a fundamental physical concept that is widely used
in many branches of engineering. In reservoir engineering, it is a powerful method of
estimating original oil in plac

1
Advances in Enhanced Oil Recovery Processes
Laura Romero-Zern
University of New Brunswick, Chemical Engineering Department
Canada
1. Introduction
In the last few years, Enhanced Oil Recovery (EOR) processes have re-gained interest from
the research and

LECTURE 10
GAS CONDENSATE RESERVOIRS
Basic Concepts
Calculation of Initial Gas in Place
Initial Gas In Place
Initial Gas In Place
Calculation when composition of
fluids known
Recombination of gas and liquid
fractions
Performance of volumetric
condensate r

QUIZ 6-PNG 410 SPRING 2015
APRIL 7th, 2015
NAME:
Q.1. Displayed below, is a well in a rectangular reservoir. As the well starts producing, the zone which is
affected by the wells production is shown in dashed lines. Identify the flow regime- Pseudo steady

PNG 410: Applied Reservoir Engineering
Home work assignment #4
Mar. 5, 2015
Due date: March 19, 2015
NOTE: Please detail the formula, steps, and units for the calculation. Missing
formula, calculation steps, and units can lead to lost points.
We have a ga

PNG 410: Applied Reservoir Engineering
Home work assignment #4
Mar. 5, 2015
Due date: March 19, 2015
Please read the following to maximize your grades for your homework:
Always show a sample calculation to demonstrate full understanding and carry
out the

PNG 410 Applied Reservoir Engineering
HW #3, Fluid Properties
SOLUTION
Friday, Feb. 16, 2015
Due date: March 3, 2015
Please read the following to maximize your grades for your homework:
Always show a sample calculation to demonstrate full understanding a

PNG 410, Hw # 2
Jan 29, 2015
Due: Feb. 10, 2015, Tuesday, in class
Please read the following to maximize your grades for your homework:
Always show a sample calculation to demonstrate full understanding and carry out the units with
the calculation, which

1
PNG 410: Applied Reservoir Engineering
Home work assignment #1
Jan. 20, 2015
Due date: Jan. 29, 2015
Please read the following to maximize your grades for your homework:
Always show a sample calculation to demonstrate full understanding and carry out t

PNG 410: Applied Reservoir Engineering
Home work assignment #5
March 31, 2015
Due date: April 9, 2015
Question 1:
A dry gas reservoir has an initial pressure of 3,500 psia, initial porosity of 0.15, initial residual
water saturation of 0.25, and initial g

What is your expectation for your
grade in PNG 410?
A.
B.
C.
1. What is the standard surface condition in
petroleum engineering?
A. 14.7 psi, 60F
B. 1 atm, 0C
C. 0.1 Mpa, 460 R
(A)
2. 1 bbl = _ ft3
A. 10.0 B. 5.615 C. 6.00
B. (B)
1. What is the oilfield l

1. What is the standard surface condition in
petroleum engineering?
A. 14.7 psi, 60F
B. 1 atm, 0C
C. 0.1 Mpa, 460 R
(A)
2. 1 bbl = _ ft3
A. 10.0 B. 5.615 C. 6.00
B. (B)
1. What is the oilfield length units?
A. meter
B. feet
C. centimeter
(B)
2. 1 G SCF =

PNG 410_SECTION 2_ SPRING 2015
HOMEWORK 6
.DUE DATE: APRIL 23rd 2015.
Q.1 An oil well is producing at a constant flow rate of 100 STB/day under unsteady-state flow
conditions. The reservoir has the following rock and fluid properties:
o = 1.25 bbl/STB
o =

QUIZ 7-PNG 410 SPRING 2015
APRIL 23rd , 2015
NAME:
Q.1. For a given reservoir, sketch a rough pressure profile for: a) Transient conditions b) Pseudo steady
conditions
Transients reach boundary, the
average reservoir pressure goes
Transients dont reach bo

PNG 410
Applied Reservoir Engineering
Instructor: Dr. Sanjay Srinivasan
Office: Hosler 206
Email: sanjays@psu.edu
TAs Ms. Mousumi Ghosh &
Mr. Botros Abdelmalik
Reservoir Engineering What it is?
A sub-discipline of petroleum engineering that
seeks to
deter

Lecture - 2
A glossary of geological concepts
Key Concepts
Hydrocarbon accumulations occur in more porous and
permeable subsurface geologic formation that are bound
by traps that prevent the hydrocarbons from escaping.
A reservoir is the portion of the

Lecture 9
Material Balance in Gas Reservoirs
Water Influx
Water Influx
How to calculate G from
production data?
Water Influx Recovery Factors
Abnormally pressured
reservoirs
Gas Storage
Gas Equivalent of produced
condensate

LECTURE 4
ROCK PROPERTIES PERMEABILITY
Permeability
Porosity is fluid-bearing capacity of rock, permeability is the fluid conducting
property
Assume rock is made up of a bundle of capillary tubes
Capillary tubes
Fluid flow in each tube is governed by P

Lecture - 7
Oil Properties
Formation volume factor
Isothermal compressibility of oil
Viscosity of oil
Lab Measurement of Crude Oil
Properties
Flash Liberation
Differential Liberation
Calculation using differential
liberation data
From laboratory data to f

Lecture 6
Properties of Gas and Oil
Analytical calculation of Z
Z from specific gravity
Formation volume factor and
density
Isothermal compressibility
Viscosity of Gas
Crude Oil Properties
Solution Gas Oil Ratio
Solution Gas-Oil Ratio
Formation Volume Fac

LECTURE 5
FLUID PROPERTIES PHASE DIAGRAMS
Fluid Properties Phase diagrams
PTDiagrams.
HCMixtures.
P
Liquid
CP
2phases
Gas
T
Phase diagrams hydrocarbon
mixtures
Classification of reservoirs
Oil reservoirs
FluidClassification
Critical pt.
I
BP
curve
Pressur

Chapter 1
Fundamental Concepts and Reservoir/Fluid Systems
1
1- Rs
= Solution Gas-Oil Ratio
SCF
STB
The gas solubility Rs is defined as the number of standard cubic feet of gas that will
dissolve in one stock-tank barrel of crude oil at certain pressure a

PNG 410_SECTION 2_ SPRING 2015
HOMEWORK 7
.DUE DATE: APRIL 28th 2015.
1. What is the difference between transient and Pseudo steady state flow regimes?
Answer. In the transient conditions, the transients (also known as pressure wave) do not
reach any rese

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PNG 410, in class exercise, gas reservoir .
R: slaw!) 'PSI 5K.
Use the p/z plot to estimate cumulative gas production. A rect gular volumetric
reservoir contains dry gas. The initial reservoir pressure is 4200 psia and the initial
temperature is

Chapter 2
Volumetric Determination of Hydrocarbons in Place
1/2
One of the first tasks of a reservoir engineer is to determine the original oil in
place (OOIP) and original gas in place (OGIP). Two primary and independent
methods are used to do this. The