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Modular offshore drilling unit and method for construction of same

  • US 6,048,135 A
  • Filed: 10/10/1997
  • Issued: 04/11/2000
  • Est. Priority Date: 10/10/1997
  • Status: Expired due to Term
First Claim
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1. A mobile offshore drilling unit including:

  • at least one hull member have an opening of predetermined size for receiving a separately fabricated non-buoyant interchangeable rig block;

    a separately fabricated non-buoyant interchangeable rig block sized to be received in said opening, said block including;

    a draw works,a drilling floor, anda diesel/electric power system; and

    means for connecting the hull member to the rig block.

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