1. Algunas Reflexiones sobre EOR
IAPG EOR Workshop
3 - 5 de Noviembre de 2010
Carlos Glandt
Director de Desarrollo

2. Una situacion movilizadora
IHS data base – not QC'ed
cummulative
4000
3000
2000
1000 10 20 30 40 50 60 70 80 90
100
Recovery Factor (%)
Cummulative Oil in Place 10^ bbl 9

3. Contribuciones a la Produccion
New discoveries
Non-conventional oil
Enhanced oil recovery
Optimization and Development of existing resources
Existing capacities
New resources
Environmental concerns

4. How big is the Challenge
A wide range of RF's for primary and secondary recovery
100 %
50 %
0 %
Aspiration to exceed 70%
Recovery factor
Better fields, e.g. high k sand, carbonates
Complex fields, e.g. fractured carbonates, thin oil rims
Difficult fields, e.g. low permeability, heavy oil
Locked Fields, e.g. very sour, very low permeability, extreem heavy
Field 1
Field 2
Field 3
Field 4
Field 5
Field 6
Cumulative STOIIP

5. Selection of EOR Project Concept
Candidate IOR Processes
Under Various Reservoir Conditions
2000
4000
6000
8000
10000
12000 1 10
100
1000
100000
Oil Viscosity (cp)
Reservoir Depth (ft)
Steam Injection
Pattern Water Injection
or Bottom Water Injection
Immiscible
Gas Injection
Miscible CO2
or HC Gas
Injection
Miscible
Nitrogen
Polymer

6. EOR - What Works ASP Heat Gas (Large Slug) Surfactant Brute Force
Probability of
Significant Recovery
Gas
(Large Slug)
ASP
Surfactant
Brute Force

7. Better Waterfloods results in Better EOR
Better WF è Better EOR
0.2
Very successful floods
0.15
0.1
Tertiary recovery
Less successful floods
0.05
0.2
0.4
0.6
0.8
Primary plus waterflood recovery

8. Chemical EOR Project in the U.S.

9. Chemical EOR Production in the U.S.

10. Field Scale Chemical EOR Projects?
Are EOR alternatives dissapearing these days to allow for CEOR to deliver the promised barrels?
Is CEOR robust enough to point to an unambiguous commercial phase?
How well developed and managed the waterflood needs to be to provide a solid ground for CEOR?
Are we minimizing the importance of having a trained and skillfull workforce (engineers and operators) to be successful?