| 摘要 |
<p>Surface-active acidic composition for the treatment of bottom hole zone of injection and producing wells to increase permeability and filtration properties of the layer. To increase dissolving and washing of asphalt, gum, paraffin and clay (AGPC) sediments (mud), special ingredients should be added to the mixture of hydrochloric and hydrofluoric acids and non-ionic surfactant-solvent, such as aromatic hydrocarbon solvent (e.g., toluene) or the mix of halogen solvents. During the treatment of the well bottom hole zone such a way influence of acids on clay plugs becomes more effective due to dissolving of hydrophobic AGPC sediments. Presence of nonionic surfactant in this composition, it might be hydroxyethylated alkyl phenol - AΖ 9-12) causes better solubility and more uniform (steady) distribution of AGPG solvent in the water-acidic composition as a stable low viscous micro-emulsion oil-in-water type with high peptic and inhibiting properties.</p> |
