COMPOUND FOR REMOVING LIQUID FROM BOTTOM HOLE OF WELL Russian patent published in 1998 - IPC

FIELD: gas production industry. SUBSTANCE: improved efficiency in removing liquid from bottom hole of well is achieved due to better foaming and solubility of applied compound. Compound for removing liquid from well bottom hole has following components: non-ionogenic surface-active materials, anionic-active materials (sulphonol), condensed sulfite-alcohol slop. Proportion of non-ionogenic surface-active materials and sulphonol is 3.4:1.0. Additionally, aforesaid compound has such components as ammonium carbonate and alkali metal phosphate. Overall proportioning of components is as follows, mass%: non-ionogenic surface-active materials 35.0-39.0, sulphonol 9.5-13.0, condensed sulfite-alcohol slop 28.0-41.0, ammonium carbonate 13.0-16.0, alkali metal phosphate 1.5-4.0. EFFECT: higher efficiency. 3 tbl