发明名称 |
METHOD AND APPARATUS FOR DOWNHOLE SAND CLEAN-OUT OPERATIONS IN THE PETROLEUM INDUSTRY |
摘要 |
A device to be connected to the lower end of a tubing string for removing sand or other debris from oil producing formations below a surface, the device comprising a combination of a thrust and rotational bearing assembly, a rotationally driven downhole pump comprising a rotor and a stator to provide hydraulic energy to lift fluid to the surface, a transfer chamber secured to the pump providing fluid communication between the pump and the tubing string to direct fluid from the pump to enter the string, a nose section secured to the pump rotor and constructed so that sand is mixed with wellbore fluid, a guide to take the mixture to the pump and an anti-rotation device secured to the pump constructed so as to prevent rotation of the pump stator while allowing axial movement of the pump.
|
申请公布号 |
CA2149591(C) |
申请公布日期 |
1999.03.23 |
申请号 |
CA19952149591 |
申请日期 |
1995.05.17 |
申请人 |
CARDIUM INTERNATIONAL LIMITED |
发明人 |
DEDORA, GARTH;WAWRZYNOWSKI, MICHAEL;WILKIN, JAMES F. |
分类号 |
E21B17/10;E21B21/00;E21B37/00;E21B43/12;(IPC1-7):E21B37/00 |
主分类号 |
E21B17/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|