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Ocean Riser Systems AS Patents |
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Assignee: Ocean Riser Systems AS
Address: Oslo, NO
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7367410 |
Method and device for liner system |
May 6, 2008 |
| Method for drilling and lining a well wherein at least one liner (1, 2, 32) with a larger external diameter than the substantial part of a drilling riser (10) is pre-installed at a point below the substantial part of the drilling riser (10). A bore hole section (21) is drilled after |
| 7264058 |
Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wel |
September 4, 2007 |
| An arrangement and a method to control and regulate the bottom hole pressure in a well during subsea drilling at deep waters: The method involves adjustment of a liquid/gas interface level in a drilling riser up or down. The arrangement comprises a high pressure drilling riser and a |
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