E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
114/58.2
E02B 17/00 (2006.01) B63B 21/50 (2006.01) E21B 17/01 (2006.01) E21B 43/017 (2006.01)
Patent
CA 1256326
ABSTRACT OF THE DISCLOSURE In a Tension Leg Platform, the common practice is to locate the well and anchor templates on the sea floor. This practice results in unequal lengths for the mooring elements which extend to the base of the floating structure and the well risers which extend to a well deck level which is elevated above the base of the floating structure. As a consequence, complicated tensioning systems having an extremely long stroke may be required for the well risers. The present invention provides for a well template which is elevated above the anchor templates at a level which equalizes the lengths of the mooring elements and the well risers. The well and anchor templates are constructed in a unitary structure to facilitate installation and assure proper spacing of the templates with respect to each other. In preferred embodiments of the invention, subsea storage is provided as well as curved conductors which facilitate angular deviation of the wellbores away from the template and J-tubes for the pull-in of subsea flowlines.
519478
Hunter Andrew F.
White Charles N.
Conoco Inc.
Mccallum Brooks & Co.
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