| abstract |
The invention discloses a bactericide for re-injection water in an offshore oil field and a preparation method thereof. The bactericide for re-injection water in the offshore oil field of the present invention comprises the following components: 4-28 parts of polyquaternary ammonium salt dithiocarbamate compounds; 5-30 parts of tetrahydroxymethyl phosphorus sulfate; 3-7 parts of glutaraldehyde; 1-4 parts of triazole; 2-8 parts of ethanol; 23-85 parts of water. The bactericide for the re-injection water of the offshore oil field of the invention has the characteristics of good compatibility, good water solubility, small foam, good peeling and penetrating ability, and good sterilization effect, and can not only be used in the re-injection water system of the offshore oil field, but also can be used in Oilfield exploitation, gathering and transportation system. |