Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent
1998-06-29
2000-07-04
Schoeppel, Roger
Wells
Valves, closures or changeable restrictors
Longitudinally movable operator
1663344, 166185, 166331, E21B 33129
Patent
active
06082459&
ABSTRACT:
The present invention relates to a drill string diverter apparatus for reducing surge pressure when lowering a liner into a partially cased wellbore. The diverter apparatus is connected in a pipe string above a liner being lowered into a wellbore. The diverter apparatus includes a tubular housing with ports defined therethrough to communicate and redirect fluids received in the liner to the annulus between the diverter apparatus and casing previously set in the wellbore. The diverter apparatus has an open position whereby the ports are open and communication is established and a closed position whereby flow through the ports is prevented. A sliding sleeve is disposed about an outer surface of the tubular housing and engages the casing. The sleeve moves vertically relative to the tubular housing once the diverter apparatus has been lowered into the casing to selectively open and close the flow ports. A J-slot means is provided for locking the diverter apparatus in its closed position.
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Four pages from a 1958 Halliburton Sales and Service Catalog.
Three pages from a 1960 Halliburton Sales and Service Catalog.
Hushbeck Donald F.
Rogers Henry E.
Halliburton Energy Service,s Inc.
Rahhal Anthony L.
Roddy Craig W.
Schoeppel Roger
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