Environmentally friendly biocidal quaternized amine compound

A method of treating an oilfield system with an environmentally friendly biocide, the method comprising the steps of:

• obtaining the environmentally friendly biocide, wherein the environmentally friendly biocide comprises a quaternized amine of the structure:
• where X is chlorine, R1 is a C16-C18 group, R2 is a C16-C18 group, and n is within the range of 8 to 50;
• and
• contacting the oilfield system with the environmentally friendly biocide.

A method of managing microbe levels in an oilfield system, the method comprising the steps of:

• obtaining an environmentally friendly biocide, wherein the environmentally friendly biocide comprises a quaternized amine of the structure:
• where X is chlorine, R1 is a C16-C18 group, R2 is a C16-C18 group, and n is within the range of 8 to 50;
• introducing a first treatment of the environmentally friendly biocide into the oilfield system;
• and
• introducing a second treatment of the environmentally friendly biocide into the oilfield system.

An environmentally friendly biocide comprising:

• a quaternized amine of the structure:
• where X is chlorine, R1 is a C16-C18 group, R2 is a C16-C18 group, and n is within the range of 8 to 50;
• a solvent;
• and
• at least one biocidal agent selected from the group consisting of 2,2-dibromo-3-nitrilopropionaminde, tetrakis(hydroxymethyl)phosphonium sulfate, and didecyldimethylammonium chloride.