| 发明名称 |
METHOD FOR ENHANCED RECOVERY OF OIL FROM OIL RESERVOIRS |
| 摘要 |
The present invention provides a method for recovering oil from a subterranean reservoir using waterflooding, wherein the flooding fluid used in the waterflooding process comprises water and a pyruvate-rich xanthan gum having at least 5 weight % pyruvate. The use of a pyruvate-rich xanthan gum is expected to increase the recovery of oil by improving both the oil/water mobility ratio and the sweep efficiency in reservoirs with a high degree of heterogeneity. |
| 申请公布号 |
US2015368545(A1) |
申请公布日期 |
2015.12.24 |
| 申请号 |
US201314761725 |
申请日期 |
2013.12.09 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
Jackson Scott Christopher;Sworn Graham;Visioli Donna Lynn |
| 分类号 |
C09K8/588;E21B43/40;E21B43/16 |
主分类号 |
C09K8/588 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for recovering oil from a reservoir by waterflooding, comprising:
(a) introducing an aqueous flooding fluid into the reservoir, wherein at least one portion of said flooding fluid comprises a xanthan gum characterized as having a pyruvic acid content of at least 5.0 weight (w/w); (b) displacing oil in the reservoir with said flooding fluid into one or more production wells, whereby the oil is recoverable. |
| 地址 |
Wilmington DE US |
