Dual-derrick ice-worthy jack-up drilling unit
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United States of America Patent
Stats
-
Dec 16, 2014
Issued Date -
N/A
app pub date -
Feb 14, 2012
filing date -
Oct 21, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a jack-up rig. The inventive rig would work like a conventional jack-up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with a lower portion that is an ice-bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration. Furthermore, the jack-up rig comprises at least two derricks.
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International Classification(s)
- 2012 Application Filing Year
- E02B Class
- 181 Applications Filed
- 152 Patents Issued To-Date
- 83.98 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- E02B Class
- 12 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 16, 2026 |
