Transcript Chemical Flooding

Chemical
Flooding
Bridging the gap
between chemical
flooding and
independent oil
producers.
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.
Team
Stan McCool, Paul Willhite, Tony Walton
Mark Ballard, Jyun Syung Tsau, Don Green
Grad. Stud.: Ahmed, Lin, Senior
Postdocs: Song (Dec), Rondon (Jan)
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
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
Lease
Operator
API
Trembley
Berexco
36
Wahrman
Vess
33
Missouri Flats
Merit
38
Tobias
Berexco
35
Celia South
Murfin
Chester
Waterflood
Cimerex
Pleasant Prairie Oxy
27
Acres
Wells
Zone
7
LKC J
30
3
LKC J
1260
12
Lansing Marmaton
12
Simpson Sand
31
Cherokee Lime
1440
Chester Sand
36
10
Chester Sand
Stewart
PetroSantander
27
1550
Morrow
Woodhead
Colt
28
160
Cherokee Squirrel
Muddy Creek
Stelbar
38
160
7
Cherokee B’ville
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
Trembley Crude Oil at 115°F
Formulation
Solubilizatio
n
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
0.62% Petrostep S1, 0.38% Petrostep S2
2% SBA, 1 wt% Na2CO3
14
6
4.22
0.62% Alfoterra 123-8s, 0.38% PetrostepS2
2% SBA
11
14
4.47
0.62% Alfoterra 123-8s, 0.38% Petrostep S2
0.75% IBA, 0.05 wt% NaOH
15
3
5
13
3
9.72
14.9
3
3.15
A3
0.62% Alfoterra 123-8s, 0.38% Petrostep C5
0.75% IBA, 0.25 wt% NaOH
A4
0.67% Petrostep S13-C, 0.33% Petrostep S2
1.5% IBA, 0.2 wt% NaOH
Salinity (wt% NaCl)
0.625 wt% Alfoterra® 123-8s, 0.375 wt% Petrostep® S-2
0.75 wt% IBA and 0.05 wt% NaOH;
Trembley crude oil; 46.1 °C.
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
Document results and
transfer technology
 Technical papers for SPE
 Presentations for Independent Oil Operators
 EKOGA, KIOGA, Wichita SPE