Patent ID: 9500066
Filing Date: 2016-11-22
CPC Classification: E21B

Claim Text:
1. A sleeve assembly disposed within a base pipe, comprising: a first sleeve portion having a first shear resistance for resisting movement of the sleeve assembly with respect to the base pipe; a second sleeve portion moveable with respect the first sleeve portion and having a second shear resistance for resisting movement of the second sleeve portion with respect to the first sleeve portion, the second shear resistance being greater than the first shear resistance; a first shear assembly positioned entirely between an outer surface of the first sleeve portion and an inner surface of the base pipe to provide the first shear resistance; and a second shear assembly positioned entirely between an outer surface of the second sleeve portion and an inner surface of the first sleeve portion to provide the second shear resistance; and a plug engageable with the second sleeve to plug an interior of the base pipe, wherein hydraulic pressure at a first pressure within the base pipe acts directly on the plug and results in a first axial load assumed by the first sleeve portion that is greater than the first shear resistance, and wherein hydraulic pressure at a second pressure greater than the first pressure within the base pipe acts directly on the plug and results in a second axial load assumed by the second sleeve portion that is greater than the second shear resistance.