Injection control device for subterranean well conduit
This patent describes a valving mechanism for a well conduit communicating with a downhole tool comprising: a hollow valve housing connected in series relationship with the well conduit; a slip joint connected in series relationship with the well conduit intermediate the hollow valve housing and the downhole tool; whereby the hollow valve housing may be shifted axially by the well conduit moving the downhole tool; a first annular valve element sealingly mounted within the bore of the hollow valve housing and axially shiftable with the valve housing, a support rod insertable within the bore of the hollow valve housing to define an annular fluid passage therebetween. A second annular valve element is sealingly mounted on the exterior of the support rod, whereby axial movement of the valve housing in one direction moves the first and second valve elements into axially abutting engagement to close the annular fluid passage, thereby preventing fluid flow through the conduit to the downhole tool. Axial movement of the valve housing in the opposite direction axially separates the first and second valving elements and permits fluid flow from the conduit to the downhole tool.
- Assignee:
- Baker Oil Tools, Inc., Orange, CA
- Patent Number(s):
- US 4648457
- OSTI ID:
- 6670765
- Resource Relation:
- Patent File Date: Filed date 24 Oct 1985
- Country of Publication:
- United States
- Language:
- English
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