Well packer
A pack-of device is described for use in a wellbore, including a tubular mandrel; an upper slip assembly slidably disposed on the mandrel; biasing means acting in a downward direction on the upper slip assembly; bypass seal means disposed about the exterio9r of the mandrel on a raised annular shoulder below the upper slip assembly; ratchet teeth on the mandrel below the bypass seal means; at least one J-slot lug radially extending from the mandrel below the ratchet teeth; and a housing assembly disposed about the mandrel in slidable relationship thereto, the housing assembly including; an upper slip wedge collar; an upper bypass case secured to the upper slip wedge collar; a packer saddle extending upwardly inside the upper bypass case in telescoping longitudinally slidable, non-rotatable relationship thereto; packer element means disposed on the packer saddle; a lower bypass case secured to the packer saddle; a lower slip wedge collar secured to the lower bypass case and defining a ratchet dog annulus therewith and with the mandrel.
- Assignee:
- Halliburton Co., Duncan, OK
- Patent Number(s):
- US 4627491
- OSTI ID:
- 6962024
- Country of Publication:
- United States
- Language:
- English
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