SOLID FOAMING AGENT FOR REMOVING OF LIQUID OF GAS AND GAS CONDENSATE WELLS Russian patent published in 1996 - IPC

FIELD: gas recovery. SUBSTANCE: solid foaming agent having prolonged action is prepared by feeding powder lignosulfonate, block-polymer of propylene oxide and ethylene oxide having common formula C_nH_2n+1O(C₃H₆O)_m(C₂H₄O)_pH, (where n being number of carbon atoms in alkyl radical is 5-15, m being number of moles of propylene oxide is 9-45, p being number of moles of ethylene is 30-180), carboxymethyl cellulose and ferrous complex of monosodium salt of EDTA into mixer. Quantities of said components is 42-57 mass %, 28-42 mass %, 2-28 mass % and 1-4 mass % respectively. Mixing is carried out till homogeneous mass is prepared, then thus obtained mass is placed into molds to prepare spindle. Density thus obtained spindle is 1000-1030 kg/m³.. Proposed agent may be used for water condensate mixture which contains gas condensate (its quantity being up to 50 vol %), sodium salts (its quantity being up to 8.0 mass %) and soluble salts of calcium and magnesium (their quantities being up to 1.4 mass). Said agent is available at temperatures at to 80 C. EFFECT: increases efficiency of removing of water condensate mixture. 1 tbl, 5 dwg