Self-locating seal assembly
Patent
·
OSTI ID:6632731
This patent describes a self-locating assembly for sealing between a well string and the bore of a surrounding well conduit, the surrounding conduit being provided with an internal recess for engagement by the seal assembly, comprising: a mandrel having an interior bore for conducting well bore fluids, an exterior, upper connecting means for connection in a well string leading to the well surface, and a lower end, the lower end being connected to the remainder of the mandrel to form an external support shoulder, and wherein the mandrel exterior has a region of reduced external diameter adjacent the lower end which defines a setting shoulder in the mandrel exterior; a seal body carried about the mandrel on the support shoulder while running into the well bore, the seal body having an external seal region for sealingly engaging the interior bore of the surrounding well conduit and an internal seal region for sealingly engaging the mandrel exterior, the seal body being provided with window openings at one circumferential location, each window opening having an upper and lower tapered ramp surface; upper and lower sleeve means circumscribing the seal body at spaced locations to thereby define a circumferential opening, each sleeve means having an interior surface which is spaced-apart from the seal body to define an annular recess.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4765402
- OSTI ID:
- 6632731
- Country of Publication:
- United States
- Language:
- English
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