Title:
PROCESS FOR CONSTRUCTING A WELL FOR EXPLOITING A RESERVOIR UNDER A SEA-BED OR OCEAN-BED
Document Type and Number:
WIPO Patent Application WO/2015/056218
Kind Code:
A3
Abstract:
A process for constructing a well (1) for exploiting an oil or gas reservoir, comprising the following operations: (A) drilling a formation submerged by a water head, at least 3, 600 meters deep or more, reaching the formation from the surface of the water with a drilling riser (7), and a drilling tool which passes internally through the drilling riser; and evacuating through the drilling riser (7) at least one of the circulating drilling fluid, the oil or natural gas coming from the formations and the resulting drilling materials. The drilling riser (7) has an external diameter equal to or smaller than 17 inches and reaches a wellhead (3) having an internal diameter equal to or smaller than 18.75 inches, and positioned in correspondence with or close to the seabed submerged which covers the formation.
Inventors:
MOLASCHI CLAUDIO (IT)
MALIARDI ALBERTO (IT)
FERRARA PAOLO (IT)
MALIARDI ALBERTO (IT)
FERRARA PAOLO (IT)
Application Number:
PCT/IB2014/065379
Publication Date:
June 18, 2015
Filing Date:
October 16, 2014
Export Citation:
Assignee:
ENI SPA (IT)
International Classes:
E21B7/12
Domestic Patent References:
| WO2000034619A1 | 2000-06-15 |
Foreign References:
| US20040065474A1 | 2004-04-08 |
Other References:
DARREL K. PELLEY ET AL: "Mooring and Riser Management in Ultra-Deep Water and Beyond", SPE INTERNATIONAL SPE/IADC 92616, 23 February 2005 (2005-02-23), pages 1 - 14, XP055122872, Retrieved from the Internet [retrieved on 20140612]
Attorney, Agent or Firm:
BONATTO, Marco (Via Borgonuovo 10, Milano, IT)
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