Patent ID: 9243470
Filing Date: 2016-01-26
CPC Classification: E21B

Claim Text:
1. A downhole system comprising: an annulus sealing device having a flow path therethrough, a first side, a second side and at least one sealing element; a latch element positioned at said first side of said annulus sealing device; at least one check valve assembly positioned at said second side of said annulus sealing device; said at least one check valve assembly having an annular seat, a seat-engaging element rotatably relative to said annular seat, and a biasing member urging said seat-engaging element toward said annular seat; and a rigid elongate member extending at least partially through said latch element, said elongate member having a first end, a second end and an outer surface extending between said first end and said second end; a latch receiving element coupled to the first end of said rigid elongate member and selectively attachable to and detachable from said latch element; and a fluid communication path extending between said annular seat and through said latch element, said fluid communication path at least partially defined by said rigid elongate member; wherein the second end of said rigid elongate member extends through the at least one check valve to prevent engagement of the seat engagement member with the annular seat.