发明名称 |
System for recovering viscous petroleum from thick tar sand |
摘要 |
Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path formed in a well by concentric casing and tubular members extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a potential passage in the formation outside the flow path into which a drive fluid is injected to promote movement of the petroleum to the well for production up a production flow line extending up the interior of the tubular member.
|
申请公布号 |
US4019575(A) |
申请公布日期 |
1977.04.26 |
申请号 |
US19750643579 |
申请日期 |
1975.12.22 |
申请人 |
CHEVRON RESEARCH COMPANY |
发明人 |
PISIO, PETER;KIRKVOLD, CHARLES F. |
分类号 |
E21B36/00;E21B43/24;(IPC1-7):E21B43/24 |
主分类号 |
E21B36/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|