Patent ID: 7645347

Claim:
A mobile chemical mixing and injection unit adapted for use during the extraction of an oil/water/sand slurry from an oil field storage tank wherein said tank has a body of accumulated sand therein, an outlet port and an inlet port, and wherein said unit comprises: a. a mobile platform comprising a motorized truck body having a flat bed; b. a first fluid holding tank for holding a first volume of fresh water, a second fluid holding tank for holding a second volume of fresh water and mixing a first group of flocculants, coagulants and surfactants in said second volume of fresh water thereby forming a first aqueous chemical solution; and, a third fluid holding tank of equal size to said second fluid holding tank for holding a third volume of fresh water and mixing a second group of flocculants, coagulants and surfactants in said third volume of fresh water thereby forming a second aqueous chemical solution; wherein said first fluid tank is mounted to said flat bed, and wherein said second and third fluid holding tanks are mounted to the flat bed adjacent to the first fluid holding tank in tandem to each other; c. a fluid outlet in communication with the first fluid holding tank for connecting the first fluid holding tank to a high pressure pump intake for injecting said first volume of fresh water into said inlet port of said oil field storage tank for creating said slurry; d. a fluid pathway for transferring a volume of water from the oil field storage tank into the first, second and third tanks; and e. means for mixing chemicals into said first and second aqueous chemical solutions and a pathway of chemical injection for injecting the first and second aqueous chemical solutions into said volume of water from the oil field storage tank.