Downhole apparatus with packer cup and slip

A downhole assembly for use in a well bore, said assembly comprising:

• a downhole apparatus comprising:
• a center mandrel;
• a slip means disposed on the center mandrel for grippingly engaging an inner surface of the well bore when in a set position;
• a retractable packer cup disposed on the mandrel for selectively sealing an annulus between the mandrel and the well bore, the retractable packer cup being releasably coupled to the center mandrel, the retractable packer cup is slidable relative to the center mandrel when released so as to permit the expansion of an elastomeric lip portion to sealingly engage the well bore;
• and
• an o-ring that extends around the center mandrel for preventing the flow of fluid between the center mandrel and the retractable packer cup;
• wherein the retractable packer cup seals the annulus prior to setting the slip means in the set position for engaging the well bore;
• a setting apparatus connected to the downhole apparatus for at least partially supporting the downhole apparatus while the downhole apparatus is lowered into the well bore.

A method for setting a downhole tool in a wellbore, the method comprising:

• lowering the downhole tool into the well, the downhole tool comprising a center mandrel, slip means disposed on the center mandrel, and a retractable packer cup disposed on the center mandrel in an unset position;
• sealing an annulus between the mandrel and the well bore by selectively releasing the retractable packer cup from the center mandrel, the retractable packer cup having an elastomeric lip portion configured to urge radially outward in a relaxed set position, so as to contact and seal against the wellbore;
• and
• creating a differential pressure across the retractable packer cup sufficient for causing the set retractable packer cup to slide relative to the center mandrel towards the slip means such that the slip means moves to a set position,
• wherein the slip means is configured for grippingly engaging an inner surface of the well when in the set position;
• and
• wherein the retractable packer cup is configured to retract prior to being set in the set position.