Method of treating a well using fluoboric acid to clean a propped fracture

摘要: The permeability of the prop pack in a subterranean fracture containing propping agent is improved by contacting with fluoboric acid. acid slowly forms hydrolysis products, including hydrofluoric and hydroxyfluoboric acid, which react stabilize clays other fines pack, thereby improving its permeability. Because hydrolyzes slowly, it can be injected deep into extremities before significant spending occurs.