Patent ID: 7314088
Filing Date: 2008-01-01
Classification: E21B

Abstract:
1. A system for retrieving a tubular element extending into a subsea well provided with a wellhead, the tubular element being provided with a hanger suspending the tubular element at the wellhead, the hanger having a larger outer diameter than the tubular element, the system comprising: a conduit assembly having a passage providing fluid communication between the wellhead and an offshore platform located above the well, the conduit assembly comprising at least an upper part of internal diameter allowing the tubular element to pass therethrough; disconnection means for disconnecting the hanger from the tubular element; and retrieval means for retrieving the tubular element through the conduit assembly to the offshore platform, wherein said upper part of the conduit assembly includes an offshore riser of smaller internal diameter than the outer diameter of the hanger, and wherein the conduit assembly further comprises a lower part which lower part is connected to the wellhead; wherein the lower part is a lower part of internal diameter allowing the hanger to pass therethrough, whereby the passage in said lower part is in fluid communication with a space for storing the hanger so as to allow the tubular element to pass through the passage in said lower part when the hanger is stored in said space.