Patent ID: 9605495
Date: 2017-03-28
CPC Classifications: E21B

Claim:
1. A pressure joint apparatus for use with a floating installation that is connected to a stiff riser, the pressure joint apparatus comprising: a low pressure slip joint for connecting the installation to the stiff riser, the low pressure slip joint comprising an inner cylinder, an outer cylinder, and a low pressure dynamic seal; and a telescopic assembly, the telescopic assembly comprising an inner barrel, an outer barrel, and a high pressure seal, wherein the inner cylinder, the outer cylinder, the inner barrel and the outer barrel each intersect at least one common plane perpendicular to a longitudinal axis of the low pressure slip joint, wherein the telescopic assembly, in its entirety, is arranged to be fitted within the low pressure slip joint when in a non-extended configuration, such that normal operation of the low pressure slip joint is not impeded, and wherein the telescopic assembly is arranged to extend outside the low pressure slip joint when in an extended configuration, and the inner barrel is fixed with respect to the outer barrel when in the extended configuration.