Downhole Tool Non Contact Position Measurement System
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 18, 2016
app pub date -
Feb 17, 2015
filing date -
Feb 17, 2015
priority date (Note) -
Published
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
A downhole tool includes a position system. The position system includes a hub moveably coupled to a fixed tool string. The hub includes a sensor component. The position system also includes a position sensor disposed within the fixed tool string and segregated from the sensor component. Additionally, the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.
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 | |
---|---|---|
SCHLUMBERGER TECHNOLOGY CORPORATION | 300 SCHLUMBERGER DRIVE SUGAR LAND TX 77478 |
International Classification(s)

- 2015 Application Filing Year
- E21B Class
- 4392 Applications Filed
- 3453 Patents Issued To-Date
- 78.63 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fredette, Mark A | Houston, US | 16 | 481 |
# of filed Patents : 16 Total Citations : 481 | |||
Sallwasser, Alan J | Houston, US | 18 | 479 |
# of filed Patents : 18 Total Citations : 479 | |||
Toniolo, Julien | Houston, US | 17 | 10 |
# of filed Patents : 17 Total Citations : 10 | |||
Wells, Peter | Houston, US | 28 | 513 |
# of filed Patents : 28 Total Citations : 513 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- E21B Class
- 8.29 % this patent is cited more than
- 9 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 | Feb 18, 2028 |
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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