External sleeve cementing tool
This patent describes a cementing tool apparatus. It comprises a tubular housing having an inner passage defined longitudinally therethrough and having a radially outer surface, the housing also having a cementing port and a longitudinal slot both disposed through a wall thereof; an outer closure sleeve slidably received about the outer surface of the housing and movable relative to the housing between an open position wherein the cementing port is uncovered by the closure sleeve and a closed position wherein the cementing port is closed by the closure sleeve; an inner operating sleeve slidably received in the housing and slidable between first and second positions relative to the housing; and mechanical interlocking means, extending through the slot and operably associated with both the operating sleeve and the closure sleeve, for mechanically transferring a closing force from the operating sleeve to the closure sleeve and thereby moving the closure sleeve to its closed position as the operating sleeve moves from its first position to its second position.
- Assignee:
- Halliburton Co., Duncan, OK (USA)
- Application Number:
- PPN: US 7-515883
- OSTI ID:
- 5797034
- Resource Relation:
- Patent File Date: 25 Apr 1990
- Country of Publication:
- United States
- Language:
- English
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