[Carry_Okie]

Water must be clean. Any biologicals introduced would plug up the holes and reduce the oil from moving into the well bore.

Do they chlorinate it? The reason I am asking is that my understanding is that bacteria 'polymerize' methane into oil in the first place; hence, we don't want to be killing those in situ.

[thackney]

bacteria ‘polymerize’ methane into oil

False. Some bacteria breaks down oil into components. I don’t see it going the otherway.

Fracturing Fluid additives:
http://energyindepth.org/docs/frac-fluid.pdf