PRODUCTION ENHANCEMENT WITH MICROEMULSION​

COMPOSITION AND STRUCTURE

  • Main composition: Terpene, surfactant and cosolvent, effective content ≥ 65%.
  • Type: Homogeneous micro-emulsion.
  • Structure: With oil-soluble terpene as the core, and a water-soluble comb-shaped surfactant as the enclosure.

Industrial Product

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FEATURES

  • High surfactant content and surface activity.
  • Oleophobic and hydrophobic, reducing capillary force and adhesion.
  • Solvent + surfactant, high solubilization.

FUNCTIONS

1. Preventing reservoir damage

  • 0.5% micro-emulsion (ME) has an anti-swelling rate of 89.5%.
  • To effectively prevent water lock damage and increase gas/oil phase permeability.

2. Improving the recovery factor of tight reservoir

  • Imbibition recovery factor: 0.3% ME is 14.51% higher than fresh water, 8.35% higher thanconventional cleanup additive.
  • Pressure reducing and production improving: 0.3% ME decreases injection by 10.66%-38.25%, and improves recovery factor by 9.95%-13.71%.

3. Dispersing and reducing the viscosity of heavy oil

  • 0.3% ME reduces viscosity by 84.3%-91.0%.
  • Its main function is dispersing. Its viscosity reducing effect is superior to biological enzyme and other products.

4. Improve the recovery factor of heavy oil

  • Guanidine gum fracturing fluid: Flowing back pressure drops by 63.04%, displacing pressure drops by 99.17%.
  • Slickwater fracturing fluid: Flowing back pressure drops by 14.29%, displacing pressure drops by 23.08%.

5. Making fracturing fluid have the function of oil displacing

  • 0.3% ME improves recovery factor by 5.55%-12.44%.
  • Its effect in improving recovery factor is superior to biological enzyme and other products.

FIELD APPLICATION

  • Cyclic micro-emulsion stimulation (CMES)
  • Cyclic micro-emulsion + CO2 stimulation (CMECS)
  • ME oil-displacing fracturing fluid fracturing (MEODF)
  • ME oil-displacing fracturing assisted CSS
  • ME assisted CSS