Compact downhole tool
A compact downhole tool, such as a frac plug, may include a single frustoconical member and a single set of slips. The slips may further include an internal button that engages with the frustoconical member. Various elements in the downhole tool may be dissolvable or degradable.
1 . A downhole tool, comprising:
a single frustoconical member at a first end of the downhole tool;
a mandrel collar affixed to a first end of the single frustoconical member;
a single set of slips in contact with the mandrel collar;
an elastomeric element disposed around the single set of slips tending to pull the slips against the mandrel collar;
a shear screw passing through at least one slip of the single set of slips, wherein the shear screw is affixed to the slips, and wherein at least a portion of the shear screw is disposed in a hole in the mandrel collar;
and a plurality of interlocking members disposed around the single set of slips.
2 . The downhole tool of claim 1 , wherein:
the shear screw is affixed to the at least one slip in the single set of the slips by being screwed into a set of threads in the slip.
3 . The downhole tool of claim 1 , wherein the frustoconical member and the mandrel collar each have a passageway along a long axis of the downhole tool.
4 . The downhole tool of claim 3 , wherein the passageway in the mandrel collar comprises shear threads.
5 . The downhole tool of claim 3 , wherein the mandrel collar comprises one or more threaded holes configured for the installation of shear screws.
6 . The downhole tool of claim 1 , wherein at least one slip in the single set of slips is formed using a composite material.
7 . The downhole tool of claim 1 , further comprising one or more axially extending pins connecting one or more of the plurality of interlocking members to one or more slip of the single set of slips.
8 . A downhole apparatus, comprising:
a downhole tool comprising:
a single frustoconical member at a first end of the down-hole tool;
a mandrel collar affixed to a first end of the single frustoconical member;
a single set of slips in contact with the mandrel collar;
an elastomeric element disposed around the single set of slips tending to pull the slips against the mandrel collar, and
a shear screw passing through at least one slip of the single set of slips, wherein the shear screw is affixed to the slips, and wherein at least a portion of the shear screw is disposed in a hole in the mandrel collar; and
a plurality of interlocking members disposed around the single set of slips; and
a sealing member configured to engage a central opening in the downhole tool.
9 . The downhole apparatus of claim 8 , wherein the sealing element is dissolvable.
10 . The downhole apparatus of claim 8 , wherein the sealing element is degradable.
11 . The downhole apparatus of claim 8 , further comprising a wireline adapter kit configured to engage the single frustoconical member.
12 . The downhole apparatus of claim 8 , wherein at least one slip of the single set of slips is formed using a composite material.
13 . The downhole apparatus of claim 8 , further comprising one or more axially extending pins connecting one or more of the plurality of interlocking members to one or more slip of the single set of slips.