Inventor · Cypress, TX, US

John R. Willingham

20Patents
10h-index
14Co-inventors
68Inventor score

Filing activity: May 10, 2005 → Jul 14, 2017

Most-cited inventions

PatentTitleAreaCited byStatus
US8403051B2 Stabilizing emulsified acids for carbonate acidizing Chemistry; Metallurgy 90 Active
US7723272B2 Methods and compositions for fracturing subterranean formations Chemistry; Metallurgy 82 Active
US7703531B2 Multifunctional nanoparticles for downhole formation treatments Chemistry; Metallurgy 56 Active
US8551926B2 Stabilizing emulsified acids for carbonate acidizing Chemistry; Metallurgy 50 Active
US7543644B2 Concentrated suspension of particulate additives for fracturing and other fluids Chemistry; Metallurgy 48 Active
US7721803B2 Nano-sized particle-coated proppants for formation fines fixation in proppant packs Fixed Constructions 39 Active
US7343972B2 System stabilizers and performance enhancers for aqueous fluids gelled with viscoelastic surfactants Chemistry; Metallurgy 32 Expired
US7347266B2 Use of mineral oils, hydrogenated polyalphaolefin oils and saturated fatty acids for breaking ves-gelled fluids Chemistry; Metallurgy 23 Active
US7875575B2 Compositions and methods for water and gas shut-off in subterranean wells with VES fluids Chemistry; Metallurgy 15 Active
US8056630B2 Methods of using viscoelastic surfactant gelled fluids to pre-saturate underground formations Chemistry; Metallurgy 10 Active
US8397812B2 Nano-sized particle-coated proppants for formation fines fixation in proppant packs Chemistry; Metallurgy 6 Active
US8196659B2 Multifunctional particles for downhole formation treatments Chemistry; Metallurgy 4 Active
US9617463B2 Nano-sized particle-coated proppants for formation fines fixation in proppant packs Chemistry; Metallurgy 3 Active
US8188015B2 Methods and compositions for fracturing subterranean formations Chemistry; Metallurgy 2 Active
US7942215B2 Drilling fluids for oil and gas reservoirs with high carbonate contents Chemistry; Metallurgy 2 Active
US8278252B2 Nano-sized particles for stabilizing viscoelastic surfactant fluids Chemistry; Metallurgy 1 Active
US8105492B2 Methods for recharging nanoparticle-treated beds Chemistry; Metallurgy 1 Active
US9303502B2 Method of controlling water production through treating particles with RPMS Chemistry; Metallurgy 0 Active
US11060017B2 Formulations comprising recovered water and a viscosifier and associated methods Chemistry; Metallurgy 0 Active
US10982128B2 Method for making a treatment fluid comprising a diverting agent in flake form, and method of treating a well Chemistry; Metallurgy 0 Active

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