Downhole apparatus with packer cup and slip
View Patent ↗A downhole apparatus and for use in a well bore and associated method are disclosed. The downhole apparatus includes a center mandrel. A slip means is disposed on the mandrel. The slip means can include teeth or the like for grippingly engaging the well bore when in a set position. A packer cup is also disposed on the mandrel. The packer cup is provided for sealing an annulus between the mandrel and the well bore. The packer cup is slidable relative to the mandrel, and can be controlled to slide along the mandrel in order to move the slip to the set position. Also disclosed is a downhole assembly that includes a downhole tool and a setting apparatus. The setting apparatus can be used for lowering the downhole apparatus to a desired setting depth and then releasing the downhole apparatus.
1. A downhole apparatus for use in a well bore, said apparatus comprising:
a center mandrel;
slip means disposed on the mandrel for grippingly engaging the well bore when in a set position;
a packer cup disposed on the mandrel for sealing an annulus between the mandrel and the well bore;
wherein the packer cup is slidable relative to the mandrel for sliding to move the slip means to the set position;
wherein the packer cup comprises an elastomeric lip portion;
wherein the elastomeric lip portion is a retractable elastomeric lip portion;
a lip sleeve attached to the retractable elastomeric lip portion; and
at least one locking dog for securing the lip sleeve in place relative to the mandrel.
2. The apparatus of claim 1 , wherein at least one of the center mandrel, slip means, and packer cup is at least partially made of a non-metallic material.
3. The apparatus of claim 1 , further comprising an extrusion limiter at least partially disposed about the elastomeric lip portion of the packer cup.
4. The apparatus of claim 1 , wherein the at least one locking dog includes at least one soluble locking dog.
5. The apparatus of claim 1 , wherein the slip means comprises a generally cylindrical body having a dual-axis bore passage.
6. The apparatus of claim 1 , wherein the slip means comprises a wedge slip assembly, the wedge slip assembly comprising at least one slip segment.
7. A downhole assembly for use in a well bore, said assembly comprising:
a downhole apparatus comprising:
a center mandrel;
slip means disposed on the mandrel for grippingly engaging the well bore when in a set position; and
a packer cup disposed on the mandrel for sealing an annulus between the mandrel and the well bore; and
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;
wherein the packer cup is slidable relative to the mandrel for sliding to move the slip to the set position; and
wherein:
the packer cup comprises:
a retractable elastomeric lip portion; and
a lip sleeve attached to the retractable elastomeric lip portion;
the downhole apparatus further comprises at least one locking dog for securing the lip sleeve in place relative to the mandrel; and
the setting apparatus comprises:
an index sleeve disposed around at least a portion of the mandrel;
an index slot formed in the index sleeve; and
an index pin extending at least partially into the index slot.
8. The assembly of claim 7 , wherein the center mandrel includes a connecting portion, and wherein the setting apparatus is connected to the connecting portion of the center mandrel.
9. The assembly of claim 8 , wherein the setting apparatus is connected to the connecting portion via at least one shear pin.
10. The assembly of claim 9 , wherein the setting apparatus includes an at least substantially sealed chamber filled with fluid having a predetermined pressure.
11. The assembly of claim 7 , wherein the index sleeve further comprises a locking dog release slot.