INTERVENTION BLOWOUT PREVENTER AND WELL INTERVENTION TOOL
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 8, 2014
app pub date -
Jun 29, 2012
filing date -
Jun 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Non-US Coverage
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Abstract
The present invention relates to an intervention blowout preventer (1) for being mounted on a well head (2) or a Christmas tree, comprising a plurality of valves (3, 4) arranged in fluid communication with each other, connected and forming a tubular pipe (5) enclosing a cavity being in fluid communication with the well head when the intervention blowout preventer is mounted onto the well head and at least one plug (37) in the well head has been removed, wherein the intervention blowout preventer further comprises a pressure reducing system (1) comprising a chamber (6) and a piston (7) arranged inside the chamber dividing the chamber into a first chamber part (8) and a second chamber part (9), the first chamber part being in fluid communication with the cavity and the second chamber part being filled with a compressible fluid, such as gas. Furthermore, the invention relates to a well intervention tool (100), a well intervention system (200) and a well intervention method.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WELLTEC A/S | 3450 ALLERØD |
International Classification(s)

- 2012 Application Filing Year
- E21B Class
- 2968 Applications Filed
- 2659 Patents Issued To-Date
- 89.59 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hallundbæk, Jørgen | Graested, DK | 114 | 547 |
# of filed Patents : 114 Total Citations : 547 | |||
Iversen, Morten | Hurdal, NO | 2 | 19 |
# of filed Patents : 2 Total Citations : 19 | |||
Macaulay, Malcolm | The Woodlands, US | 6 | 107 |
# of filed Patents : 6 Total Citations : 107 | |||
Vasques, Ricardo Reves | Holte, DK | 58 | 257 |
# of filed Patents : 58 Total Citations : 257 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 6 Citation Count
- E21B Class
- 5.02 % this patent is cited more than
- 11 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 8, 2025 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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