Pressure pulse assisted injection water flooding processes for carbonate reservoirs

摘要

A method for recovering oil from a hydrocarbon-bearing reservoir using pressure pulse injections of an aqueous salt solution is provided. The aqueous salt solution includes one or more salts suitable for enhancing oil recovery in carbonate reservoirs and has a salinity in the range of about 5,000 parts-per-million (ppm) total dissolved solids (TDS) to about 7,000 ppm TDS. The aqueous salt solution may be injected into a reservoir using continuous or periodic pressure pulse injections.