Patent ID: 8807822

Claim:
A method for mixing a fluid flowing through a wellbore extending through a subterranean formation, the method comprising the steps of: positioning a static mixer assembly in a wellbore between and connected to an upper and a lower tubing string, the upper and lower tubing string each having a substantially tubular wall defining axially extending interior passageways, the static mixer assembly having a solid, substantially tubular wall defining an axially extending interior passageway and having a plurality of static mixer vanes extending radially from the tubular wall of the static mixer assembly and into the interior passageway of the static mixer assembly; flowing a fluid mixture of two or more components from the interior passageway of one of the upper or lower tubing strings, into and through the interior passageway of the static mixer assembly, and into the interior passageway of the other of the upper and lower tubing string; mixing the at least two components of the fluid using the static mixer assembly; and moving a downhole tool through the interior passageway of the upper and lower tubing string and through the interior passageway of static mixer assembly.