Screening method for friction reducer precipitation

A method of preparing a fracturing fluid comprising:

• preparing a laboratory treatment fluid based at least in part on a diluted treatment fluid model;
• screening a plurality of friction reducers against the laboratory treatment fluid;
• selecting at least one friction reducer from the plurality of friction reducers based at least in part on the step of screening;
• and
• preparing a fracturing fluid including the at least one friction reducer.

A method comprising:

• preparing a fluid comprising water and iron ions in an amount greater than 1000 ppm;
• screening a plurality of friction reducers against the fluid;
• selecting at least one friction reducer from the plurality of friction reducers based at least in part on the step of screening;
• and
• preparing a fracturing fluid including the at least one friction reducer.