US Patent No: 7,331,393

Number of patents in Portfolio can not be more than 2000

Subsea lubricator device and methods of circulating fluids in a subsea lubricator

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Abstract

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Subsea lubricator device, comprising a blowout preventer assembly, a tool housing assembly and a stuffing box, intended to be located at a subsea Christmas tree, and methods of circulating fluids in a subsea lubricator. The device comprises a blowout preventer (40) and a lubricator (60). Along the entire length of the device a bypass (46, 66) is located. The bypass communicates fluid with the device via a fluid connection (72) at the upper end of the tool housing and via a valve assembly (51) at the bottom of the blowout preventer. This permits removal of gas or oil being present in the device by circulating the hydrocarbons in the well.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FMC KONGSBERG SUBSEA ASKONGSBERG22
FMC TECHNOLOGIES, INC.CHICAGO, IL374

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoel, Karl-Willie Heggedal, NO 1 4

Cited Art Landscape

Patent Info (Count) # Cites Year
 
VETCO GRAY INC. (2)
6,102,125 Coiled tubing workover riser 14 1998
6,360,822 Casing annulus monitoring apparatus and method 50 2000
 
SCHLUMBERGER TECHNOLOGY CORPORATION (1)
4,658,904 Subsea master valve for use in well testing 40 1985
 
Southland Rentals, Inc. (1)
4,836,289 Method and apparatus for performing wireline operations in a well 34 1988
 
Texaco Limited (1)
4,705,114 Offshore hydrocarbon production system 31 1985
 
The British Petroleum Company p.l.c. (1)
4,993,492 Method of inserting wireline equipment into a subsea well 29 1990
 
Other [Check patent profile for assignment information] (1)
5,819,582 Slow wave time-domain reflectometer point level sensor 9 1997

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
FMC KONGSBERG SUBSEA AS (3)
7,549,476 Subsea wireline lubricator 0 2004
8,322,427 Control system 0 2007
8,684,089 Method and system for circulating fluid in a subsea intervention stack 0 2008
 
ZEITECS B.V. (1)
8,534,366 Compact cable suspended pumping system for lubricator deployment 0 2010

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 19, 2015
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 19, 2019
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00