Reviewed are the problems of hydrophobization of silted reservoirs within oil bearing objects at the fields of West Siberia region. Positive influence of cation-active surf acta nts during bottom-hole areas treatments, due to loose-bond water removal and acid stimulation coverage increase, is determined. Proposed are the directions for further scientific studies of hydrophobization processes in hydrophylic reservoirs with the purpose to enhance oil recovery from productive formations.