Wells – Valves – closures or changeable restrictors – Fluid operated
Patent
1998-04-09
2000-04-25
Lillis, Eileen Dunn
Wells
Valves, closures or changeable restrictors
Fluid operated
166319, 1663328, 251 58, 251 634, 251279, 251280, E21B 3414
Patent
active
060532513
ABSTRACT:
A reduced travel operating mechanism for downhole tools is provided. The reduced travel operating mechanism (57) includes a load ratio system (59) which may include compression ring (102) disposed within circumferential guide pocket (123) and a linkage system (61) disposed within mechanism pocket (125). The linkage system (61) may include first link (112), master link (114), and second link (116) coupled between compression ring (102) and connecting member (118). A loading system (63), which may include a hydraulic piston (100), acts on compression ring (102) to move compression ring (102) a first distance. Connecting member (118) moves a second distance in response to the movement of compression ring (102) a first distance. The linkage system (61) may operate such that the second distance is greater than the first distance or operate such that the first distance is greater than the second distance. A biasing system (139), which may include springs (104), may be included to bias compression ring (102) in a first position.
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Halliburton Energy Service,s Inc.
Herman Paul I.
Kreck John
Lillis Eileen Dunn
Smith Marlin R.
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