Inventor · St Ives, GB

Gary John Tustin

51Patents
14h-index
77Co-inventors
83Inventor score

Filing activity: Dec 11, 1998 → Sep 30, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US6881709B2 Viscosity reduction of viscoelastic surfactant based fluids Emerging Cross-Sectional Technologies 130 Expired
US6194356A Gelling composition for wellbore service fluids Emerging Cross-Sectional Technologies 70 Expired
US6232274A Viscoelastic surfactant based gelling composition for wellbore service fluids Emerging Cross-Sectional Technologies 49 Expired
US8342241B2 Delivery of nanodispersions below ground Chemistry; Metallurgy 47 Active
US6803348B2 Hydrophobically modified polymers for water control Chemistry; Metallurgy 38 Expired
US7748452B2 Polymeric microspheres as degradable fluid loss additives in oilfield applications Chemistry; Metallurgy 37 Active
US8596354B2 Detection of tracers used in hydrocarbon wells Fixed Constructions 32 Active
US8043999B2 Stabilizing biphasic concentrates through the addition of small amounts of high molecular weight polyelectrolytes Chemistry; Metallurgy 31 Active
US6433075B1 Surfactant based gelling composition for wellbore service fluids Chemistry; Metallurgy 28 Expired
US8044000B2 Polymer delivery in well treatment applications Performing Operations; Transporting 21 Active
US6920928B1 Method for water control Fixed Constructions 17 Expired
US7703521B2 Polymeric microspheres as degradable fluid loss additives in oilfield applications Chemistry; Metallurgy 16 Active
US7975764B2 Emulsion system for sand consolidation Chemistry; Metallurgy 15 Active
US7804598B2 High power acoustic resonator with integrated optical interfacial elements Physics 15 Active
US8393395B2 Use of encapsulated chemical during fracturing Chemistry; Metallurgy 12 Active
US9290689B2 Use of encapsulated tracers Fixed Constructions 12 Active
US8109140B2 Downhole sampling apparatus and method for using same Fixed Constructions 11 Active
US7878243B2 Method and apparatus for sampling high viscosity formation fluids Fixed Constructions 11 Active
US7410934B2 Aqueous viscoelastic fluid Chemistry; Metallurgy 10 Expired
US8016040B2 Fluid loss control Chemistry; Metallurgy 10 Active
US7196041B2 Surfactant comprising alkali metal salt of 2-methyl oleic acid or 2-ethyl oleic acid Chemistry; Metallurgy 10 Expired
US8555969B2 Methods and apparatus to change the mobility of formation fluids using thermal and non-thermal stimulation Fixed Constructions 8 Active
US7343978B2 Scale dissolver fluid Chemistry; Metallurgy 7 Active
US7858563B2 Wellbore treatment with hydrocarbon-responsive fluid containing oligomeric viscoelastic surfactant Chemistry; Metallurgy 6 Active
US8904857B2 Downhole sampling Fixed Constructions 5 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.