Compositions and methods for increasing recovery, or flowback, of hydrocarbon compounds from hydrocarbon-containing subterranean reservoirs. The compositions include a dialkyl dimethyl ammonium surfactant, an amphoteric surfactant, and a solvent. The concentrated compositions are storage stable and easily diluted with a water source such as produced water to form injectates suitable for injecting into one or more hydrocarbon-bearing subterranean reservoirs. The injectates convert oil-wet rocks to water-wet but do not cause formation of emulsions with hydrocarbon compounds within the subterranean environment. Injection of the injectates into a reservoir results in an increase in the yield of hydrocarbons recovered, in particular from low permeability, low porosity reservoirs such as those formed by or encountered in hydraulic fracturing and/or in certain geographic locations.