CPC E21B 33/1208 (2013.01) | 9 Claims |
1. An open tip downhole expansion tool comprising:
a single layer body including a frustoconical portion, the body having a base portion at a diametrically smaller part of the body and a tip portion at a diametrically larger part of the body, the body having a radially outer zone defined by being toward an outer surface of the body from a midline of a wall thickness of the body and a radially inner zone defined by being toward an inner surface of the body from the midline and having an axial length extending from the base portion to the tip portion;
an outer compliance area in a material of the body along a length of the radially outer zone; and
an inner compliance area in the material of the body along a length of the radially inner zone, the outer and inner compliance areas being located at different positions along the axial length of the body, the outer and inner compliance areas each causing the body to present a first resistance to deformation when the compliance areas are in a first condition and a higher resistance to deformation of the body when the compliance areas are in a set condition.
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