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

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Presentation on theme: "Chemical Flooding Bridging the gap between chemical flooding and independent oil producers."— Presentation transcript:

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 LeaseOperatorAPIAcresWellsZone TrembleyBerexco367LKC J WahrmanVess33303LKC J Missouri FlatsMerit Lansing Marmaton TobiasBerexco3512Simpson Sand Celia SouthMurfin Cherokee Lime Chester Waterflood CimerexChester Sand Pleasant PrairieOxy3610Chester Sand Stewart Petro- Santander Morrow WoodheadColt28160Cherokee Squirrel Muddy CreekStelbar381607Cherokee B’ville

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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 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 A2 0.62% Petrostep S1, 0.38% Petrostep S2 2% SBA, 1 wt% Na2CO % Alfoterra 123-8s, 0.38% PetrostepS2 2% SBA A3 0.62% Alfoterra 123-8s, 0.38% Petrostep S2 0.75% IBA, 0.05 wt% NaOH % 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 Trembley Crude Oil at 115°F

10 Salinity (wt% NaCl) wt% Alfoterra® 123-8s, wt% Petrostep® S 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


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