Valve apparatus for controlling communication between the interior of a tubular member and an inflatable element in a well bore
Patent
·
OSTI ID:6892767
This patent describes an apparatus, comprising: a. a valve housing means adapted to be supported on a tubular member; b. bore means in the valve housing means; c. passage means in the tubular member and in the valve housing means for communicating fluid from the interior of the tubular member to the bore means and to the interior of an inflatable element supported externally on the tubular member to inflate it; d. valve means disposed in the bore means for controlling fluid flow through the bore means; and e. means disposed in the bore means to restrain the valve means from moving responsive to a first pressure differential between a higher pressure in an annulus surrounding the tubular member and a lower pressure in the bore means.
- Assignee:
- N.J. McAllister Petroleum Industries, Inc.
- Patent Number(s):
- US 4653588
- OSTI ID:
- 6892767
- Country of Publication:
- United States
- Language:
- English
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