Use of high ratio aqueous alkali silicates in drilling fluids

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9212304
APP PUB NO 20120245059A1
SERIAL NO

13424547

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An improved drilling and completion fluid can be used in subterranean drilling for oil and gas. Sodium silicate and potassium silicate-based drilling fluids are commonly used drilling fluids with the notable attributes of exceptional shale stabilization characteristics coupled with exceptional environmental performance Environmental and wellbore stabilization characteristics are improved by using high ratio aqueous silicates wherein ratio is defined as the molar ratio of SiO2:Me2O, where Me is an alkali and is most commonly sodium or potassium (i.e. Na2O and K2O). For high ratio aqueous alkali silicates, the molar ratio of SiO2:Me2O can range from just over 4.0 to about 12.0.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
PQ CORPORATIONP O BOX 840 VALLEY FORGE PA 19482-0840

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McDonald, Michael J Toronto, CA 15 125

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jun 15, 2023
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jun 15, 2027
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