| 166 / | HD | WELLS |
|
| 179 | DF | PACKERS OR PLUGS {17} |
| 118 |  | .~ With expanding anchor {12} |
| 119 | DF | .~.~> Relatively movable packers or plugs |
| 120 | DF | .~.~> Anchor actuated by fluid pressure {2} |
| 123 | DF | .~.~> With detachable setting means {2} |
| 126 | DF | .~.~> With controllable passage between central chamber and space below packer {2} |
| 129 | DF | .~.~> With controllable bypass outside central conduit {1} |
| 131 | DF | .~.~> With controllable passage between central conduit and space above packer or plug |
| 132 | DF | .~.~> Portion extends beyond end of surrounding conduit |
| 133 | DF | .~.~> With controllable passage through packer |
| 134 | DF | .~.~> Support and holddown expanding anchors |
| 135 | DF | .~.~> Flow stopping type, e.g., plug |
| 136 | DF | .~.~> Spring set anchor {1} |
| 138 | DF | .~.~> Wedge or cam and friction drag {2} |