Device for Operating Downhole Equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Sep 5, 2013
app pub date -
Oct 21, 2011
filing date -
Oct 21, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided A device for conveying a pressure pulse for activating fluid-activated equipment in a pipe (12/27), wherein the device is characterized in that the pipe (27) comprises a flexible membrane (24) which isolates the fluid F1 in the fluid conveying pipe from a fluid F2 in another canal which is in fluid communication with the equipment, wherein the membrane, on account of its elasticity, conveys pressure changes (pressure pulses) in the fluid P1 in the pipe (12) to the fluid P2 in the other canal (30). Beneficially, the other canal (30) is fluidically coupled to a chamber (26) wherein the membrane (24) is located, and the membrane (a bellows) (24) is threaded to an exterior of the pipe section (27) and arranged in a chamber-forming (26) seat of the section of pipe (27), wherein the wall of the section of pipe includes a number of penetrating bored holes for providing fluid connection from the fluid F1 having a pressure P1 in the pipe (27) radially out towards the membrane lying against the outer wall. The membrane (24) is beneficially a sleeve-formed bellows, and the chamber forms a ring-formed arrangement surrounding the section of pipe, and the wall of the pipe comprises a number of penetrating bored holes completely around the pipe.
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 | |
---|---|---|
TCO AS | STORANESET 20 INDRE ARNA 5260 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Brandsdal, Viggo | Ytre Arna, NO | 28 | 178 |
# of filed Patents : 28 Total Citations : 178 |
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Patent Citation Ranking
- 4 Citation Count
- E21B Class
- 3.49 % this patent is cited more than
- 12 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 | Mar 5, 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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