OLKLIN®-FBA
FLOW BACK SURFACTANT AID
Introduction:
The product, OLKLIN®-FBA, is a novel flowback aid effective in flowback of stimulation fluid from an oil or gas well. More specifically, the product relates to enhance relative oil and gas permeability when applied with stimulation fluids to oil or gas wells.
OLKLIN®-FBA is a combination of an oil-in-water type microemulsion avoiding requirement of a conventional hydrocarbon oil or solvent. The product is thermodynamically stable and macroscopically homogeneous mixture.
Literature data shows from 60 to 90% of the injected fluids used in fracturing operations stay in tight gas reservoirs. These large amounts of fluids are believed to be trapped in the area surrounding the fracture and within the fracture. The trapped fluid lowers the relative permeability and effective flow area thereby decreasing well productivity. The flow back aids reduce damage due to phase trapping, improve mobilization of the oil and gas, increase the regained permeability and enhance oil / gas production.
Application:
OLKLIN®-FBA has to be added into a subterranean formation via water or injection brine. Alternatively, the product has to be added to a fracturing formulation at concentrations from about 0.1 to about 5 gallons per thousand gallons, based on volume of injected fluid.
Advantage:
- Provides enhanced fluid recovery and relative permeability enhancement of fractured subterranean formations.
- Reduce surface or interfacial tension and / or increase contact angle, thereby allowing enhanced fluid recovery during the fracturing or stimulation processes.
- Removes unwanted deposits from wellbore and production equipment. (removes various nonpolar materials, such as oil-based mud, synthetic-based mud, paraffins, asphaltenes, slugs, emulsions, and combinations thereof, from subterranean formations. Such removal may act to heal, restore, or remediate the formations).
- Effective without the use of solvents (e.g., hydrocarbons, terpenes, and the like).
- Provides wettability alteration, well cleanout, and reduce well damage due to phase trapping.
- Flowback aids can form stable emulsions when in contact with residual oil. The formation of emulsions is a serious problem during well stimulation processes and can cause a significant reduction of production, large loss of oil, and even compromise viable economic exploitation. These losses can amount to about 55%. To combat such emulsions, the product has a demulsifier added in it.