1. Chemical Flooding
Bridging the gap between chemical flooding and independent oil producers.

2. Objective
To design efficient chemical flooding processes for KS leases/reservoirs.
The designs are necessary for Independent Oil Operators to make an informed assessment for implementation of a pilot or demonstration project.

3. Team
Stan McCool, Paul Willhite, Tony Walton Mark Ballard, Jyun Syung Tsau, Don Green
Grad. Stud.: Ahmed, Lin, Senior
Postdocs: Song (Dec), Rondon (Jan)

4. Tasks I. Identify and select 10 leases
II. Design efficient chemical formulations
III. Simulate field applications and evaluate economics for 2 leases
IV. Document results and transfer technology

5. Identify/Select Leases
Methods
Public data (KGS)
Not successful
Interviews with operators
Top 30 producers
Top 10 is SE KS
45% KS oil production
Criteria
Successful waterfood

6. Lease
Operator
API
Acres
Wells
Zone
Trembley
Berexco 36 7
LKC J
Wahrman
Vess 33 30 3
Missouri Flats
Merit 38
1260 12
Lansing Marmaton
Tobias 35
Simpson Sand
Celia South
Murfin 27
1440 31
Cherokee Lime
Chester Waterflood
Cimerex
Chester Sand
Pleasant Prairie
Oxy 10
Stewart
Petro-Santander
1550
Morrow
Woodhead
Colt 28
160
Cherokee Squirrel
Muddy Creek
Stelbar
Cherokee B’ville

8. Define Efficient Chemical Systems
Laboratory tests on 10 crude/brine samples
Acid number of crude oils
Trembley and Wahrman leases
Phase behavior studies
Flow Tests in rocks
Mobility of polymer solutions

9. Trembley Crude Oil at 115°F
Formulation
Solubilization
ratio
(mL/mL)
Time to equilibrate (days)
Optimal salinity
(wt% NaCl) A1
0.62% Petrostep S1, 0.38% Petrostep S2
2% SBA, 0.05 wt% NaOH 15 3
4.6 A2
2% SBA, 1 wt% Na2CO3 14 6
4.22
0.62% Alfoterra 123-8s, 0.38% PetrostepS2
2% SBA 11
4.47 A3
0.62% Alfoterra 123-8s, 0.38% Petrostep S2
0.75% IBA, 0.05 wt% NaOH 5
0.62% Alfoterra 123-8s, 0.38% Petrostep C5
0.75% IBA, 0.25 wt% NaOH 13
9.72 A4
0.67% Petrostep S13-C, 0.33% Petrostep S2
1.5% IBA, 0.2 wt% NaOH
14.9
3.15

10. Salinity (wt% NaCl)
0.625 wt% Alfoterra® 123-8s, wt% Petrostep® S-2
0.75 wt% IBA and 0.05 wt% NaOH;
Trembley crude oil; 46.1 °C.

11. Simulate field applications and evaluate economics
Develop geological models
History-match primary and secondary processes
Conduct simulations of chemical floods
Estimate costs
Determine ROR for pilot and field projects

12. Document results and transfer technology
Technical papers for SPE
Presentations for Independent Oil Operators
EKOGA, KIOGA, Wichita SPE