Patent ID: 8584749

Claim:
A method for disposing of waste during a hydrocarbon recovery process, the method comprising: removing a mixture comprising hydrocarbons and particulate solids from a reservoir formation; separating at least a portion of the hydrocarbons from the particulate solids; separating the particulate solids into a plurality of streams comprising a fines particle stream and a coarse particle stream; injecting a mixed slurry comprising the coarse particle stream and the fines particle stream through a first pipe into the reservoir formation; controlling a permeability of the mixed slurry relative to a fluid of the reservoir formation by varying a concentration of the fines particle stream in the mixed slurry such that the coarse particle stream and only a first portion of the fines particle stream is in the mixed slurry and a second portion of the fines particle stream is in a waste stream; and injecting the waste stream comprising the second portion of the fines particle stream through a second pipe into a target formation, wherein the reservoir formation and the target formation lie in a substantially vertical line.