| 摘要 |
A downhole pump is provided having characteristics that permit it to be installed in a subterranean well in order to pump well fluids at a substantial pressure to operate a downhole tool, such as an inflatable packer. The pump (30) is mechanically driven by motor means (60a, 60b, 60c, 60d) whose diameter permits insertion through the well and whose output characteristics are suitable for driving the pump means (30). A single mounting bracket (42) supports the motor means (60a, 60b, 60c, 60d) in a housing (10) and prevents counter rotation of tho motor stators. The motor means (60a, 60b, 60c, 60d) are immersed in a clean fluid inserted at the well surface and the clean fluid is maintained at the well hydrostatic pressure by a compensating piston (not shown). <IMAGE> |
