It is know that two-third of the original oil in place are still in the ground. Petroleum companies are looking for techniques to improve sweep efficiency and increase recovery factors. As a result, Enhanced Oil Recovery (EOR) processes need to be carried out. Successful WAG floods can yield 5-20% additional oil recovery over waterflood because of improved microscopic displacement efficiency by the solvent coupled with improving areal and vertical sweep efficiency.

1. Supported By
PETROSYNC’S RESERVOIR ENGINEERING SERIES
Your Key To Optimize Oil Recovery Process
30 May —1 June 2016
Kuala Lumpur, Malaysia
CHEMICALLYENHANCED
WATERALTERNATINGGAS

2. 2
Our Chemically Enhanced Water Alternating Gas is developed to provide theoretical &
practical aspects of enhancing oil recovery by using Chemical EOR methods in running
successful water alternating gas floods.
RESERVOIR ENGINEERING | CHEMICALLY ENHANCED WATER ALTERNATING GAS
How Does This Course Benefits You?
Avogadro's Fun Fact
Do you know that Avogadro's work was not well received
within the scientific community; it was only four years after
his death that research from other scientists began to prove
his theories correct.
Build strong understanding in fundamental of chemically enhanced WAG processes
Gain firm foundation in learning methods of running CWAG processes to enhance oil recovery.
Improvise the efficiency of current conventional WAG process
Maximize oil recovery and overcome issues occur in conventional WAG process by learning
control parameters in CWAG process & CWAG screening criteria.
Optimization in CWAG using simulation approach
CWAG field cases & simulation exercises are included for better grasp of the knowledge in
running CWAG process to ensure success during implementation of this technology.
It is know that two-third of the original oil in place are still in the ground.
Petroleum companies are looking for techniques to improve sweep efficiency
and increase recovery factors. The Water Alternating Gas (WAG) process can
be optimized by using CO2 instead of natural gas, and adding some chemical
additives in the water slug such as Alkalis, Surfactant and Polymers. This
improvement in the WAG process by using chemical in the water slug is
known as Chemical WAG or CWAG.
general@petrosync.com | +65 6451 4500 | www.petrosync.com
Course Overview
Benoît Paul Émile Clapeyron's Fun Fact
Do you know that Clapeyron’s father in law is the one who
designed and constructed The First Engineer Bridge in Saint
Petersburg?
Course Design
This course is designed to cover the introduction of EOR methods, factors to be considered in
designing WAG & CWAG processes to provide participants the best practices in CWAG.
Includes Specific and Practical Case Studies
Participants will gain a through understanding of the theory and practices of the Chemically
Enhanced Water Alternating Gas process to improve the efficiency of current WAG technology.
Participants will be given practical exercises and case studies from SPE papers to enhance the
knowledge and theory they have learnt in class.

3. 3
RESERVOIR ENGINEERING | CHEMICALLY ENHANCED WATER ALTERNATING GAS
PetroSync Distinguished Instructor
Who Needs This Program
Practical & Consulting
Andres Yrigoyen has18 years of experience in Oil & Gas industry and
was a Senior Reservoir Engineer in Petroleos de Venezuela SA
(PDVSA). He was a Senior Reservoir Engineer Consultant in
Halliburton Latin America, Colombia and has provided consulting
and advisory services in reservoir engineering. He has involved in
unconventional development project for ConocoPhilips exploratory
gas development was a leader of integrated studies for PDVSA Gas
two districts, Anaco and San Tome, 200 main reservoirs and more
than 500 active wells.
Training
Provided trainings through Petroleos de Venezuela (PDVSA) such as
Simulation of CWAG Process, Simulation of WAG Process and etc.
Awards
“The Most Improved Anchor” , Schlumberger, Houston Texas,
October 1999
Publication
Author of book “Advanced Petrophyscis” Course notes, Austin,
Texas July 2004
Andres Yrigoyen
Instructor &
Consultant in
Frontender,
Engineering &
Consulting Services
This course is designed and developed for reservoir and production professionals who are
involved in enhancing oil recovery in running successful water alternating gas floods,
including:
Job Titles Include:
Reservoir Engineers
EOR Project Engineers
EOR Project Managers
EOR Project Coordinator
Production Technologist
Laboratory Technicians
Researches in Reservior Engineering
PetroSync Inhouse Solutions
PetroSync can tailor our courses to meet your specific
needs at your preferred location and schedule. Contact us
for more information at +65 6415 4500 or email to
general @petrosync.com
PetroSync Quality Assurance
All PetroSync courses are developed with top quality to
address all your training needs and purposes. Our courses
are vetted strictly to ensure that we always deliver the best
courses with the best industry expert.
general@petrosync.com | +65 6451 4500 | www.petrosync.com
08:00—09:00 Registration (Day 1) 13:00—14:00 Lunch
09:00—11:00 Session I 14:00—15:30 Session III
11:00—11.15 Refreshment Session I 15:30—15:45 Refreshment Session II
11:15—13:00 Session II 15:45—17:00 Session Iv (Last Session)
Course Schedule

4. 4
RESERVOIR ENGINEERING | CHEMICALLY ENHANCED WATER ALTERNATING GAS
Course Agenda — 3 Days
general@petrosync.com | +65 6451 4500 | www.petrosync.com
DAY 2
1. Introduction of EOR Methods
 Introduction of EOR methods
 History of EOR methods
 IOR/EOR definitions according to SPE
 Maturity of EOR processes
 Screening criteria for chemical, miscible and immiscible
methods
 Constrains and challenges of CEOR
2. WAG and CWAG process. Factors to be Considered for
Designing
 WAG History
 WAG, CWAG Process, Drive Mechanisms
 Understanding imbibition, drainage and hysteresis.
Relative permeability, wettability, and capillary pressure
4. Miscible and Immiscible Displacements
 Miscibility Concepts
 Minimum Miscibility Pressure (MMP), Slim Tube Test
 Lean Gas, Rich Gas, CO2
 CO2 Injection
 Injection Process
 Ternary Diagram
5. Chemical EOR Methods and WAG Processes
 Concepts Alkaline, Surfactant and Polymer (ASP)
 Injection scheme and workflow
 Fluid/fluid, and Rock/fluid interactions during CWAG
 Injection patterns, WAG Ratio, Mobility control in the gas
slug, and in the water slug
 Proper time to initiate a CWAG process
 Pro and contra of the CWAG process
3. Laboratory and Pilot Tests to Understand WAG Process
 Three phase relative permeability curves
 Correlations for determining three phase relative
permeability curves
 Capillary number. Residual oil saturation versus Capillary
Number
Exercise 1: Relative permeability calculations by using
correlations
Exercise 2: Experimental and numerical simulation study
discussion. SPE-154152
DAY 3
Case 2: Daqing Field, SPE 127714, SPE 99441
7. Simulation of CWAG Processes
 Eclipse Approach
 Main Keywords
8. Surface Facilities, Surveillance and Monitoring of CWAG
Processes
 Well drilling design, well completion design
 Surface facilities aspects
 Pilot well and observer well, logging requirements
 Monitoring plots. Hall Plot (Ex.3), water oil ratio, pore
volume injected by slug
 Magnetotellurics methods, 3D and 4D seismic
DAY 1
 Combinations of Alkaline-Polymer (AP), Alkaline-
Surfactant (AS), Alkaline-Surfactant-Polymer (ASP),
considerations for designing
 Adsorption, Salinity, and Temperature effects over
recovery
 Reservoir Management of CWAG projects
6. Field Studies
Case 1: North of Burbank Unit. SPE 169734, SPE 169942
Exercises:
 Exercise 1: Relative Permeability Calculations By Using
Correlations
 Exercise 2: Experimental and Numerical Simulation
Study Discussion. SPE154152
 Exercise 3: Monitoring Plots
 Exercise 4 (Group Exercise): Analyse and Discuss Real
Data from Participants Relative to WAG and CWAG
Processes.

5. 5
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Title : CHEMICALLY ENHANCED WATER ALTERNATING GAS
Date : 30 May —1 June 2016
Location : Kuala Lumpur, Malaysia
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