| US 7,350,590 B2 | ||
| Instrumentation for a downhole deployment valve | ||
| David G. Hosie, Sugar Land, Tex. (US); Michael Brian Grayson, Sugar Land, Tex. (US); and R. K. Bansal, Houston, Tex. (US) | ||
| Assigned to Weatherford/Lamb, Inc., Houston, Tex. (US) | ||
| Filed on Nov. 05, 2002, as Appl. No. 10/288,229. | ||
| Prior Publication US 2004/0084189 A1, May 06, 2004 | ||
| Int. Cl. E21B 34/06 (2006.01) | ||
| U.S. Cl. 166—386 [166/66; 166/332.8; 166/250.01; 175/45] | 95 Claims |
| 1. An apparatus for use in a wellbore, comprising:
a housing defining a bore formed therein, the housing being located in the wellbore such that the bore is aligned with the
wellbore;
a valve disposed within the housing and movable between an open position and a closed position, wherein the closed position
substantially seals a first portion of the bore from a second portion of the bore and the open position provides a passageway
to permit one or more tools lowered into the wellbore to pass through the bore;
a sensor located downhole and configured to detect whether the valve is in the open position, the closed position or a position
between the open position and the closed position;
a second sensor configured to detect a presence of a drill string within the housing; and
a monitoring and control unit configured to collect information provided by the sensors.
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