OPEN FACE DERRICK
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United States of America Patent
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Issued Date -
Jun 17, 2010
app pub date -
Dec 12, 2008
filing date -
Dec 12, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An offshore oil derrick having a derrick tower, a derrick substructure, and a drilling floor. The derrick substructure is cantileverly supported by a hull, the derrick tower is supported by the derrick substructure, and the drilling floor is located on top of the derrick substructure below the derrick tower. The drilling floor comprises a v-door on the fore end; a well center approximately 40-50% of the floor length from the aft end; a plurality of setback areas; drawworks on the starboard side; a dynamic brake on the aft end of the drawworks; and a driller's station. The derrick may further include a spare line spool connected to the derrick substructure on the forward end of the derrick.
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