Patent ID: 7472756

Claim:
A sliding sleeve apparatus disposed within a well so that an annulus is formed between an outer portion of the sliding sleeve and an inner portion of the well, the sliding sleeve apparatus comprising: an outer mandrel, wherein said outer mandrel contains an annulus port; an inner mandrel slidably disposed within said outer mandrel, said inner mandrel containing an inner portion and an outer portion, and wherein said inner mandrel contains a production port, and an equalizing port; an indentation formed on said outer mandrel and wherein an annular seal assembly is disposed within said indentation, said seal assembly engaging said outer portion of said inner mandrel so that pressure from the annulus is isolated from the inner portion of the inner mandrel; and wherein said seal assembly comprises: a first header seal member; a first seal ring means, abutting said first header seal member, for sealing with the outer portion of said inner mandrel; a follower seal member abutting said first seal ring means; a second seal ring means, abutting said follower seal member, for sealing with the outer portion of said inner mandrel; a second header seal member abutting said second seal ring means; a vent groove disposed on the outer portion of said inner mandrel, wherein said vent groove having a leading edge that extends through said equalizing port and wherein said vent groove further extends to said production port.