Methods and apparatus for converting an offshore structure

摘要

An offshore support system comprises an offshore structure having a platform supported by one or more legs. The system further comprises a mat structure having a mat, and a clamp configured engage at least one leg of the offshore structure. The clamp is movable into and out of engagement with the leg to connect and release the mat to and from the offshore structure.

主权项

1. An offshore support system, comprising:
an offshore structure having a platform supported by one or more legs; and a mat structure comprising:
a mat;a clamp configured engage at least one leg of the one or more legs of the offshore structure, the clamp movable into and out of engagement with the at least one leg to connect and release the mat to and from the offshore structure; andone or more stability caissons coupled to the mat, wherein the one or more stability caissons each comprise a floating type structure that provides buoyancy to the mat to allow the mat to float in a position wherein a top of the mat is at substantially the same elevation as a bottom of a hull of the offshore structure and to stabilize the mat when disposing the mat beneath the offshore structure via horizontal movement between the mat structure in the position and the offshore structure for connection of the mat to the offshore structure.