Bactericide for acidizing and fracturing of oil field and preparation method of bactericide

• Main Authors: YANG RONGQI, ZHANG SHOUXIAN, ZHANG YU
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; DYES; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; POLISHES; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING

The invention belongs to the technical field of acid fracturing, and particularly relates to a bactericide for acid fracturing of an oil field and a preparation method of the bactericide. The preparation method comprises the following steps: adding 2-cyclohexene-1-ketone into a reactor, slowly dropwise adding diethyl phosphine, heating, and stirring for reaction; 2-aminopyridine, isopropanol and sodium cyanoborohydride are added into the reactor, the pH value is adjusted to 3-4, a heat preservation reaction is carried out, the pH value is adjusted to be smaller than 1, a reaction is carried out, and the temperature is reduced to 40 DEG C or below; adjusting the pH value to 9-10, adding bromododecane, carrying out a heat preservation reaction, cooling, adjusting the pH value to 3-4, and filtering; dropwise adding dimethyl sulfate, carrying out a heat preservation reaction, and adjusting the pH value to 6-7; and carrying out reduced pressure distillation, recrystallization and overnight drying to obtain the pro