发明名称 |
Process for recovering oil from subterranean formations |
摘要 |
Disclosed is a method of using polymer flooding solutions in tertiary oil recovery operations in which the loss of relatively high molecular weight polymers to the formation is substantially reduced by the use of aqueous solutions of polyethylene glycol or polypropylene glycol or both, having a molecular weight of from about 600 to about 1200. The method is particularly effective under high salinity conditions.
|
申请公布号 |
US4589489(A) |
申请公布日期 |
1986.05.20 |
申请号 |
US19840672543 |
申请日期 |
1984.11.19 |
申请人 |
VOLZ, HARTWIG;SCHNEPEL, FRANK-MICHAEL |
发明人 |
VOLZ, HARTWIG;SCHNEPEL, FRANK-MICHAEL |
分类号 |
C09K8/588;(IPC1-7):E21B43/16 |
主分类号 |
C09K8/588 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|