公开(公告)号：US10925282B2

公开(公告)日：2021-02-23

申请号：US16399314

申请日：2019-04-30

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Gary Jenneman

IPC: A01N35/04 ,  A01N59/00 ,  C02F1/50 ,  A01N35/02 ,  C09K8/52 ,  C09K8/60 ,  C02F103/10 ,  C02F103/36

Abstract: A process is provided for the time dependent reduction and kill of cellular bacteria in a fluid by sequential exposure to nitrites and a low concentration of biocide. Oilfield water containing sulfate-reducing bacteria can be supplied with a timed sequential exposure of nitrite and biocide. The timed sequential addition of the biocide following exposure to the nitrite provides enhanced kill of the sulfate-reducing bacteria at concentrations of biocide that are lower than would be possible using simultaneous addition of these materials.