Patent ID: 8657012
Filing Date: 2014-02-25
Classification: E21B

Abstract:
1. A method of deploying a riser comprising: a. parking a riser lower portion subsea for a period of time on a riser mount set in the seafloor and spaced proximate to a wellhead; b. moving the riser lower portion from the parked position to the wellhead; c. mounting a lower end of the riser lower portion onto the wellhead; d. completing a full length of the riser by attaching a riser extension on an upper end of the riser lower portion; e. coupling an upper end of the riser extension to a facility above sea surface; f. accessing the wellhead from above the sea surface through the full length of the riser; g. decoupling the riser extension from the facility; h. detaching the riser extension from the riser lower portion; i. returning the riser lower portion to the parked position; j. emitting a beacon from the riser lower portion of step (a) so that the riser lower portion can be located subsea; and k. moving the riser lower portion from the parked position to a wellhead that is different from the wellhead of step (b).