| 发明名称 |
Cystine proteases for bacterial control |
| 摘要 |
A produced water bacterial pretreatment method which includes a) optionally adjusting a pH and a temperature of a produced water containing bacteria; b) adding a cysteine protease to said produced water; c) allowing said cysteine protease to inactivate said bacteria, thus producing pretreated produced water; and d) introducing said pretreated produced water into a wellbore penetrating a subterranean formation is provided. |
| 申请公布号 |
US9458374(B2) |
申请公布日期 |
2016.10.04 |
| 申请号 |
US201213718877 |
申请日期 |
2012.12.18 |
| 申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
Sorrells Daniel Denton |
| 分类号 |
E21B43/12;C09K8/66;E21B43/267;C09K8/04;C09K8/84;C02F1/50 |
主分类号 |
E21B43/12 |
| 代理机构 |
|
代理人 |
Anderson Jeffrey R.;Flynn Mike;Curington Tim |
| 主权项 |
1. A method of treating an oilfield fluid having an initial viscosity, comprising:
a) adjusting a pH and a temperature of the oilfield fluid containing bacteria; b) adding a cysteine protease to said oilfield fluid; c) allowing said cysteine protease to inactivate said bacteria, thus producing pretreated oilfield fluid; and d) introducing said pretreated oilfield fluid into a wellbore penetrating a subterranean formation. |
| 地址 |
Sugar Land TX US |
