Miscible Solvents are an extremely versatile product that can be used to achieve multiple desired benefits in oil and gas operations. When employed with acid, they are effective in removing oily film and other materials, allowing the acid to contact and dissolve acid-soluble materials more completely. This makes them particularly applicable in paraffinic and asphaltenic crudes. Miscible Solvents can also be used in concentrated form (neat) without the use of acid, which lowers the surface tension to 25 dynes/cm when mixed at miscible concentrations and leaves the formation water-wet. This makes them applicable for a variety of treatments and operations, such as breaking emulsions, removing drilling fluids, performing wellbore cleanouts, and removing oil-coated scales.