Particles for use in wellbore fluids
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United States of America Patent
Stats
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Jun 13, 2017
Grant Date -
Feb 20, 2014
app pub date -
Jan 12, 2012
filing date -
Jan 12, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention provides a method of manufacturing a solid phase barite containing material for use in a wellbore. The method includes the steps of providing the barite containing material having relatively small particles with a particle size distribution of at least 50 vol % particles having a diameter in the range of 1 μm to 10 μm and at least 90 vol % particles having a diameter in the range of 4 μm to 20 μm; and contacting the barite containing material with a liquid in order to form relatively large particles having a particle size distribution with at least 90 vol % of the particles having a diameter of at least 30 μm. There is also described a method of treating a wellbore with a fluid including the barite containing material.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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SCHLUMBERGER OILFIELD UK LIMITED | MINERVA MANOR ROYAL CRAWLEY RH10 9BU |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Bingham, Richard | Katy, US | 36 | 717 |
# of filed Patents : 36 Total Citations : 717 | |||
Massam, Jarrod | Aberdeen, GB | 22 | 316 |
# of filed Patents : 22 Total Citations : 316 | |||
Philip, Mazin | Houston, US | 2 | 3 |
# of filed Patents : 2 Total Citations : 3 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 13, 2024 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 13, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
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Oct 22, 2014 | FPAY | FEE PAYMENT | year of fee payment: 12 |
Oct 13, 2010 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Oct 18, 2006 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Oct 31, 2005 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAT HOLDER NO LONGER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: STOL); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
May 27, 2003 | I | Issuance | |
May 07, 2003 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 14, 2002 | F | Filing | |
Aug 29, 2001 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALARD, GEORGES MAURICE;ROUX, PHILIPPE JEAN;MOURIN, ALAIN, YVES, GERARD;AND OTHERS;REEL/FRAME:012278/0847 Owner name: BIO-ETHANOL NORD PICARDIE, FRANCE Effective Date: Aug 29, 2001 |
Feb 04, 1999 | PD | Priority Date |

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