|
This page displays all 「FI」 in main group E21B34/00. |
HB:Handbook | ||||
|
CC:Concordance | |||||
|
|
Valve arrangements for boreholes or wells [2006.01] | HB | CC | 2D129 | |
|
|
.in well heads [3] | HB | CC | 2D129 | |
|
|
..in underwater well heads [3] | HB | CC | 2D129 | |
|
|
.in wells [3] | HB | CC | 2D129 | |
|
|
..responsive to flow or pressure of the fluid obtained (E21B 34/10 takes precedence) [3] | HB | CC | 2D129 | |
|
|
..operated by control fluid supplied from outside the borehole [2006.01] | HB | CC | 2D129 | |
|
|
..operated by movement of casings or tubings [3] | HB | CC | 2D129 | |
|
|
..operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools [3] | HB | CC | 2D129 | |
|
|
.Control means therefor being outside the borehole [3] | HB | CC | 2D129 | |