reservoir management - cairo university€¦ · 12/28/2017 dr.helmy sayyouh 3 reservoir management...
TRANSCRIPT
12/28/2017 1
RESERVOIR MANAGEMENT
Dr. Helmy SayyouhPetroleum Engineering
Cairo University
12/28/2017 Dr.Helmy Sayyouh 2
Introduction
The main difference between petroleum engineering and most other engineering is that “ the systems that they work with are given to them”.
12/28/2017 Dr.Helmy Sayyouh 3
Reservoir management
is a method that seeks to maximize the value of a hydrocarbon asset.
is an art and skill as well as a science.
12/28/2017 Dr.Helmy Sayyouh 4
The purpose of reservoir management isto control operations to obtain the maximum possible economic recovery from a reservoir on the basis of facts, information, and knowledge.
12/28/2017 Dr.Helmy Sayyouh 5
Objective
The prime objective of reservoir management is the economic optimization of oil and gas recovery, which can be obtained by the following steps:
12/28/2017 Dr.Helmy Sayyouh 6
1. Identify and define all individual reservoirs and their properties.
2. Deduce past and predict future reservoir performance.
12/28/2017 Dr.Helmy Sayyouh 7
4. Minimize drilling of unnecessary wells.
5. Initiate operating control at the proper time.
6. Consider all pertinent economic and legal factors.
12/28/2017 Dr.Helmy Sayyouh 8
USE OF
FINANCIAL
TECHNICAL
HUMAN
RESOURCES
WHILE
MINIMIZING
INVESTMENTS
AND EXPENCES
TO MAXIMIZE
RECOVERY
12/28/2017 Dr.Helmy Sayyouh 9
DEVELOPMENTDELINATION PRIMARY
DISCOVERYRESERVOIR
LIFE CYCLE
SECONDARY
EXPLORATION ABANDONMENT TERTIARY
12/28/2017 Dr.Helmy Sayyouh 10
Organization
Functional
Geophysicist Geologist Engineer
Cross-Functional
Geophysicists
Engineer
12/28/2017 Dr.Helmy Sayyouh 11
Reservoir ManagementInput/Output system
Resources Processing Maximum Value
Feed Back
People
Data
Technical
Financial
Tools
Integration
Organizing
Planning
Controlling
Directing
Define Reservoir Properties
Predict Performance
Minimum Wells
Modify Production System
Control at Proper Time
12/28/2017 Dr.Helmy Sayyouh 12
Data Management
Data Planning
Why needed?
What quality?
What cost?
When required?
Data Collection
From where?
How often?
Correct procedure.
Data base.
Maintain.
Data Synthesis
Integration of data.
Synergism of data.
Data Analysis
Selecting best data.
Impact on solution.
Confidence range.
Multiple source data.
12/28/2017 Dr.Helmy Sayyouh 13
Sequential Activities
Identification Exploration Discovery Plan Development Production Monitor and update plan Workover Monitor and update plan Enhanced oil recovery Abandonment
12/28/2017 Dr.Helmy Sayyouh 14
Current Activities
Exploration Development
Database Production
RESERVOIR
MANAGEMENT
Plan
Dev
elop
Up
dat
e
Monitor
12/28/2017 Dr.Helmy Sayyouh 15
Reservoir Modeling
Objectives
Data
Log Model
Well-test
Model
Geological
Model
Construct Simulation Model
Validate Model
Range of Models
Range of Predictions
Economics
12/28/2017 Dr.Helmy Sayyouh 16
What Is a Value?
Means
different things to different people
at different times
12/28/2017 Dr.Helmy Sayyouh 17
Dynamic Value of Hydrocarbon Asset
Can be determined by:
Amount recoverable under a development scheme.
Rate at which can be produced.
Cost of producing hydrocarbon.
Price.
Production regime.
12/28/2017 Dr.Helmy Sayyouh 18
Decision Tree Approach
Primary
Depletion Do Nothing
595
300
670
35% $700
45% $600
20% $400
100% $300
30% $800
40% $700
30% $500
NPV $
12/28/2017 Dr.Helmy Sayyouh 19
Case Study
McAllen Ranch Field
This case describes the process of managing redevelopment of a 30-year old geopressured gas field by a cross function team.
12/28/2017 Dr.Helmy Sayyouh 20
Overall goals of the team:
1.Increase total field gas production rate.
2.Reduce noncontributing behind reserves by 50%.
3.Complete 3D seismic interpretation and mapping and identify at least 10 new drilling locations.
12/28/2017 Dr.Helmy Sayyouh 21
4.Reduce drilling costs by at least 10%.
5.Commingle production from various zones.
12/28/2017 Dr.Helmy Sayyouh 22
This case study shows that effective cross functional team work can indeed produce exemplary results for complex oil and gas operation.
12/28/2017 Dr.Helmy Sayyouh 23
Case Study
Brassey Oil Field–British Columbia
Miscible flooding of the field began only 2 years after discovery.
12/28/2017 Dr.Helmy Sayyouh 24
The results of the team efforts in this field study:
1.Development of sound reservoir model.
2. Calculation of OOIP by engineering and geologic methods.
3. Maintenance of reservoir pressure above the minimum miscibility pressure.
12/28/2017 Dr.Helmy Sayyouh 25
4. Management of production and injection rates by tracer breakthrough monitoring coupled with pressure, voidage, gas compositional analysis, and GOR to minimum breakthrough problems and , intern, maximize utilization of exiting injection compression facilities.