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Dual-BOP and common riser system

  • US 7,975,770 B2
  • Filed: 12/22/2006
  • Issued: 07/12/2011
  • Est. Priority Date: 12/22/2005
  • Status: Active Grant
First Claim
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1. A method of drilling a well comprising the steps ofpositioning a first drilling apparatus having a riser connected to a first subsea blowout prevention component on the well;

  • drilling the well to a first well depth with the first drilling apparatus;

    moving the first drilling apparatus from the well to a seabed storage location;

    positioning said first drilling apparatus on the seabed storage location, anddrilling the well to a second well depth with a second drilling apparatus having the riser connected to a second-subsea blowout prevention component positioned at or near the seabed.

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