1. Experience of EOR Applications in SOCAR

2. Low-Hardness Water Injection
Enhanced Oil Recovery
Microbial
Steam Injection
Alkaline Flooding
In Situ Combustion
Foam Injection
Low-Hardness Water Injection

3. Scheme of Microbial EOR (MEOR)
Culture Liquid
Injection Well
Producer Well
The Injected
Bioreagents
Oil
Metabolic Zone

4. Incremental Oil Production of MEOR dynamics
incremental oil production ~ 170 ths. tons

5. Results of MEOR Stimulation Objects
The Amount of Injected Culture Liquid, t
Amount of Producer Wells Under Stimulation
Total Oil Production Due to Technology, t
Milk Whey
Activated Sludge
Molasses
Hydrocarbon- Alkaline Solution
For All Objects
17077, 8
7948
243,5 10
338
169296,0
“Binagadineft” (5)
9312
3666 -
142
87037
“Balakhanineft” (3)
1176
538 24
11277
“Surakhanineft” (1)
2409 17
34141
“Bibieybatneft” (3)
1547,2
1092
165,5 56
23438,5
Named after A.D.Amirov (4)
2188,4
2302 48 52
8023
Named after G.Z.Tagiyev
(1)
166
200 7
3047
“Absheronneft” (2)
279,2
150 30
31+8
2332,5

6. incremental oil production ~ 959 ths. tons
In Situ Combustion
Oil recovery, ths. tons
Years
after
before
incremental oil production ~ 959 ths. tons

7. Results of In-Situ Combustion
Field
Area
Horizon
Incremental oil production, ths. tons
Balakhany-Sabunchi-Ramana
Khorasani
GALDupper
340,43
II GALDlow
203,07
Goshanohur
II GALDlow+
II GALDupper
67,02
Balakhany
GALDlow
(block II-III)
43,43
Surakhany
IIa-II-III
6,89
IIIaIII-IV
85,89
Umbakı
Umbaki
I Chocrak
52,4
Gala
IIa-III
0,75
Pirallahy
North fold-onshore
GALD
156,4

8. incremental oil production ~ 692 ths. tons
Steam Injection
Oil recovery, ths. tons
after
before
Years
incremental oil production ~ 692 ths. tons

9. Results of Steam Injection
Field
Area
Horizon
Incremental oil production, ths. tons
Balakhany-Sabunchi-Ramana
Khorasani II
GLDlow
155,32
Binagadi
Binagadi-Kirmaki
GD4
126,02
GD5a+b
237,94
Binagadi-North
GD5abcd
114,27
Locbatan-Puta-Qushkhana
Puta-Qushkhana
VI-VII
9,8
Pirallahy
GALD
10,6

10. incremental oil production ~ 11 ths. tons
Alkaline Flooding
Oil recovery, ths. tons
Years
before
after
incremental oil production ~ 11 ths. tons

11. Results of Alkaline Flooding
Fields
Incremental Oil Production,
ths. tons
Kurovdag
3,0
Balakhani – Sabunchu - Ramana
8,0

12. Alkaline Flooding Displacement Mechanism
Reduction of surface tension;
Generation of foam-like emulsion as a result of reaction between petroleum acids and alkaline solution;
Disruption of film at the interface of alkaline solution and oil, formed as a result of surface adsorption of active components.

13. Foam Flooding In Siyan-Shor Field
incremental oil production ~ 23 ths. Tons

14. Foam Flooding In Sulu-Tapa Field
Years
Volume of Working Agents Injected, ths. m3
Amount of Enhanced Oil Recovery ths m3
incremental oil production ~ 13 ths. tons

15. Foam Flooding Displacement Mechanism
Foam-forming substances are injected into the reservoir via annular space from the surface. Surfactants are regularly or periodically added into active agent (gas) in parts
Foam, inside the reservoir, is formed as a result of injection of chemical blowing agent and gas-generating process initiator
To generate foam, several surfactants and CO2, N2 and hydrocarbon type gases are used.

16. Low Hardness Water Flooding
Method is based on enhanced outwashing ability of sea water by reducing its hardness through addition of reagent "Azerbaijan-4”
The reagent contains components capable to precipitate salt in the form of gel when added to the produced or sea water. Purified from the gel water becomes alcalinous. Surface tension at the oil-water interface reduces, which helps to improve oil removing properties of water.
Seawater pH = 6,0, fresh water pH = 7.5, pH of sea water treated with a reagent - 8.2, indicates an increase in alkalinity.
It was established experimentally that the final oil displacement coefficient seawater is – 0.51, fresh , low hardness water
Thecnology was effectively used in at fields Sangachali - Duvanniy - Khara-Zira.

17. Low Hardness Water Core Flooding Experiment

18. THANK YOU FOR YOUR ATTENTION!