ALFOTERRASOLOTERRASurfactants for chemical enhanced oil recovery

Sasol Performance Chemicals

ALFOTERRA & SOLOTERRA – Surfactants for chemical enhanced oil recovery

ALFOTERRA & SOLOTERRASurfactants for chemical enhanced oil recovery

Sasol offers two lines of surfactants for various types of chemical EOR. We select and design our products to match the specific conditions of your oil reservoir taking into account reser-voir temperatures, the salinity of injection and formation water, the rock type and the nature of the crude oil.

(A)SP flooding – How Sasol surfactants work• Low to high temperature

• Low to high salinity

• Reduction of capillary pressure

• High efficiency – use level 0.1 – 0.5%

• Ultralow IFT achieved with and without alkali

• high concentration products (85 to 100%)

Sasol’s testing procedures – How we help you select the right product for your field• Phase behaviour studies with field oil and field brine or synthetic oil and brine

• Solubility Studies

• Rock adsorption

• Thermal stability

• Tailored chemical design based on broad in house hydrophobe portfolio

• IFT measurement

• Sand Pack

• Polymer compatibility

Left: Alkali/ALFOTERRA/Polymer Right: Polymer/Brine

Figure 1 left: Reduction of Capillary Pressure

Figure 2 right: Oil Solubilization Variation (SP*)

Due to Structure

Left: ALFOTERRA 123-8S 90 Right: ALFOTERRA 145-8S 90

Reduction of Capillary Pressure Oil Solubilization Variation (SP*) Due to Structure

ALFOTERRA & SOLOTERRA – Surfactants for chemical enhanced oil recovery

Sasol provides technical serviceSasol Performance Chemicals has a network of seven R&D facilities in five countries (USA, China, Italy, Germany, South Africa) offering product development and screening facilities. Sasol R&D offers EOR screenings such as phase behaviour, spinning drop interfacial tension (Figure 3), and sand pack studies. This enables us to recommend the right surfactant choices out of our portfolio to speed up your evaluation process. In addition, pilot facilities mirroring all our major production processes allow development and up-scaling of custom made products.

Minimum Dynamic IFT between Heavy Crude Oil and Brine in an ALFOTERRA Surfactants ASP

Alkali Concentration (wt%)

1

0.1

0.01

0.001

0.0001

1E-05

Min

imum

Dyn

amic

IFT

(mN

/m)

0 0.35 0.5 0.75 1 1.25 1.5 1.75

NaOHNa2CO3

Figure 3: Minimum Dynamic IFT between Heavy Crude Oil and Brine in an

ALFOTERRA Surfactant ASP

ASP Formulation0.2 wt% ALFOTERRA Surfactant,1000 mg/L polymer, and various alkali concentrations dissolved in softened injection

Figure 4: Example of Pilot Facilities

in Marl, Germany

At your service

This information is based on our present knowledge and experience. However, it implies no liability or other legal responsibility on our part, including any existing third party patent rights. In particular, no guarantee of properties in the legal sense is implied. We reserve the right to make any changes according to technological progress or further developments. The customer is not exempted from the obligation to conduct careful inspection and testing of incoming goods. Reference to trade names used by other companies is neither a recommendation, nor is it intended to suggest that similar products could not be used. All our business transactions shall be governed exclusively by our General Sales Conditions.

Sasol Performance ChemicalsAnckelmannsplatz 120537 HamburgGermany

For further information on these or other Sasol products please contact a sales representative at:EOR@sasol.com

For technical inquiries or product samples please contact:techinfo@us.sasol.com

Sasol has global large scale manufacturing capabilities

Sasol’s integrated supply chain delivers products reliably in any quantity – from lab samples to full field shipments

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