Method of inhibiting the growth of sulfate reducing bacteria in water flooding processes
阅读：462发布：2021-08-06
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1. IN A FLOODING PROCESS FOR THE RECSOVERY OF OIL FROM OIL-BEARING STRATA TAKING PLACE IN THE PRESENCE OF ANAEROBIC SULFATE-REDUCING BACTERIA AND SOLUBLE FERROUS SALTS. THE IMPROVEMENT WHICH COMPRISES FLOODING THE OIL-BEARING STRATA WITH AN AQUEOUS LIQUID CONTAINING AN AMOUNT SUFFICIENT TO INHIBIT GROWTH OF THE ANAEROBIC SULFATE-REDUCING BACTERIA OF THE PRODUCTS OBTAINED BY REACTING AT A TEMPERATURE OF ABOUT 100* TO 300* FOR FROM ABOUT 1 TO 4 HOURS (A) AN OXIRANE RING CONTAINING COMPOUND SELECTED FROM THE CLASS CONSISTING OF EPOXIDIZED HIGHER FATTY ACIDS, EPOXIDIZED LOWER ALKANOL ESTERS OF HIGHER FATTY ACIDS, EPOXIDIZED AMMONIA AND C1 TO C12 ALKYL PRIMARY MONOAMINE AMIDES OF HIGHER FATTY ACIDS, EPOXIDIZED HIGHER FATTY ALCOHOLS AND EPOXIDIZED HIGHER FATTY ACIDS GLYCERIDES, WITH (B) AN OXYALKYLATION-SUSCEPTIBLE NITROGEN CONTAINING COMPOUND SELECTED FROM THE CLASS CONSISTING OF HYDRAZINE AND MONOAMINO AND POLYAMINO COMPOUNDS COMPOSED OF CARBON, HYDROGEN, OXYGEN AND NITROGEN ATOMS, HAVING ONLY FUNCTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF HYDROXYL GROUPS, PRIMARY AMINO GROUPS AND SECONDARY AMINO GROUPS AND HAVING AT LEAST ONE SUCH FUNCTIONAL AMINO GROUP; SAID REACTION BETWEEN (A) AND (B) INVOLVING RUPTURE OF EACH ORIRANE RING AND RESULTING IN THE FORMATION OF AT LEAST ONE OF THE FOLLOWING GROUPING.
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