Water-wetting nonemulsifier

Average treatment volume was 600 gallons. All fluids contained 1% (by volume) of water wetting non-emulsifier. The treatments utilizing a cationic organic polymer included the polymer in all aqueous based fluids. The reported polymer concentration of one percent by volume of the aqueous polymer solution as supplied. Active polymer concentration is actually less than this. When the clay stabilization polymer was part of the well treatment, a non-ionic water wetting nonemulsifier was used. 

Surfactants Nonemulsifiers Prevent water-wetting of formation... 

Importantly, a nonemulsifier surfactant must be either nonionic or anionic to keep rock water-wet. Cationic surfactants oil-wet sandstones. Compatibility with other additives must be demonstrated. Again, a nonemulsifier may already be included in a surfactant package product thus, a separate nonemulsifier would not be required. An excess amount of nonemulsifier will cause emulsions, rather than prevent them. 

Water-wetting surfactants, necessary in oil well stimulation, are not needed in geothermal wells because of the absence of hydrocarbons. Suspending agents (nonemulsifier surfactants) are also not needed, although they are often included in geothermal well stimulation job proposals. A clay stabilizer is not needed. 

Note The following acid additives are required corrasian inhibitor, iron control agent, water-wetting surfactant, and 5% mutual solvent nonemulsifier is optional. 

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