Patent ID: 9506312
Filing Date: 2016-11-29
CPC Classification: E21B

Claim Text:
1. A multi-gage blowout preventer test joint assembly for testing different size ram and annular subsea blowout preventers in one trip into a wellbore, comprising: a tubular inner mandrel; a bottom sub member securable to a bottom end of the inner mandrel for connecting the inner mandrel to a wellhead sealing member; a tubular outer mandrel telescopically receiving the inner mandrel in a surrounding relationship; a tubular backoff sub member having a lower end configured for threadable engagement with the bottom sub member and an upper part configured for threadable engagement with the outer mandrel, wherein the backoff sub member is provided with an internal shoulder and wherein a bottom surface of the rotation lug insert rests on said internal shoulder; and a rotation lug insert mounted in a surrounding relationship over the internal mandrel, the rotation lug insert forms a lug engagement area between the rotation lug insert and the internal mandrel for backing off the internal mandrel.