Tag Archives: CNPC-USA

Congratulations to CNPC USA

Ramey & Schwaller wishes to congratulate its client CNPC USA on issuance of U.S. Patent Number 10,280,357 titled High Density and High Temperature Emulsifier For Use In An
Oil Based Drilling Fluid System on May 7, 2019. The patent relates to An emulsifying composition for an oil based drilling fluid includes oleyl alcohol and a mixture of polymeric amides.

Ramey & Schwaller is a full-service intellectual property law firm working with an international client base from our Houston, Texas office. We are dedicated to enhancing client results through efficient practice management, innovative technologies and skilled professionals.

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Congratulations to CNPC USA

Ramey & Schwaller wishes to congratulate its client CNPC USA on issuance of U.S. Patent Number 10,280,354 titled Polymer System for Fluid Loss Control on May 7, 2019. The patent relates to A combination of three polymers including a crosslinked acrylamide-TBAS copolymers in inverse emulsion form, N-vinyl pyrrolidone-acrylamide-TBAS terpolymer, and crosslinked N-vinyl pyrrolidone-acrylamide-TBAS acts as high temperature, high pressure fluid loss control additives for water-based drilling fluids systems.

Ramey & Schwaller is a full-service intellectual property law firm working with an international client base from our Houston, Texas office. We are dedicated to enhancing client results through efficient practice management, innovative technologies and skilled professionals.

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Congratulations to CNPC USA

Ramey & Schwaller wishes to congratulate its client CNPC-USA on issuance of U.S. Patent Number 9,909,050 titled HIGH DENSITY AND HIGH TEMPERATURE EMULSIFIER FOR USE IN AN OIL BASED DRILLING FLUID SYSTEM on March 6, 2018.  The patent relates to a drilling fluid system including an emulsifier that is stable under high density and high temperature conditions.  The present invention also relates to a method of manufacturing the emulsifier from a fatty oil, diethylenetriamine, and maleic acid.

Ramey & Schwalller is a full-service intellectual property law firm working with an international client base from our Houston, Texas office.  We are dedicated to enhancing client results through efficient practice management, innovative technologies and the use of skilled professionals. www.rameyfirm.com