| 摘要 |
A packer assembly requires only forces applied axially along an actuating means such as production tubing (either pushing down or pulling up) to actuate it between its operational states, such as a set state, a bypassed state, and a released state. The packer includes a tubular member that has a lug guide formed substantially within its inner surface. The packer further includes a mandrel that can be coupled to an actuating means and disposed within the tubular member, the mandrel further comprising a lug ring having at least one lug disposed in the lug guide. The tubular member is held in a substantially fixed position relative to the mandrel once the packer is initially set within a well-bore. The lug ring is free to rotate in response to forces applied to the tubing once the packer tool assembly is initially set.
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