For a conventional chemical EOR project (Surfactant-/Polymer or Alkaline-Surfactant-Polymer) the selection of the surfactant component is the key to achieving good oil recovery performance. ChemEOR has a series of surfactant products that are designed to have the required properties for these demanding EOR applications: ultra-low IFT (Interfacial Tension), low adsorption on the formation rock, compatibility with other chemical components and stable over a wide range of reservoir temperature and water salinities.
SurFlood SRS (Sandstone Reservoir Surfactants) consists a series of novel surfactant formulations designed to increase oil recovery – especially in conventional chemical EOR projects. SurFlood SRS formulations have the capability to create ultra-low IFT over a range of types of light and medium gravity crude oils, water salinities, and temperatures. Their ability to decrease the IFT to circa 0.001 dyne/cm or lower at low product concentrations (0.1%-0.5%, v/v) makes them economically attractive. The SRS-3000 series is designed for lower temperature reservoirs (less than 65°C). For elevated temperatures cases we recommend selecting a product from the SRS-4000 series. SurFlood SRS products also may be applied as an aid in water injectivity for waterflood or Water-Alternating-Gas (WAG) projects. The addition of a low dose of the optimum SRS product to injection water will displace the trapped residual oil near the wellbore and thereby increase the water relative permeability and injectivity.
|SurFlood SRS-3000||Ultra-low IFT at reservoir conditions|
|SurFlood SRS-4000||Ultra-low IFT at harsh conditions|
Offers the best performance (creating ultra-low interfacial tension – IFT) over a range of reservoir temperatures, salinities, and types of oils.
ENHANCED OIL RECOVERY
SRS-4000 solution displaces and recovers water flood residual oil. With SurFlood SRS-4000, chemical flood EOR projects can increase oil recovery in mature fields by 5-25% OOIP (Original Oil in Place).
Works well at a low concentration and is low cost per gallon. Well-designed chemical floods can have a chemical cost of < $10/bbl incremental oil.