Frank F. Chang
26Patents
20h-index
32Co-inventors
81Inventor score
Filing activity: May 28, 1997 → Aug 21, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5979557A | Methods for limiting the inflow of formation water and for stimulating subterranean formations | Emerging Cross-Sectional Technologies | 350 | Expired |
| US6435277B1 | Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations | Emerging Cross-Sectional Technologies | 220 | Expired |
| US6140277A | Fluids and techniques for hydrocarbon well completion | Emerging Cross-Sectional Technologies | 103 | Expired |
| US6399546B1 | Fluid system having controllable reversible viscosity | Emerging Cross-Sectional Technologies | 100 | Expired |
| US6637517B2 | Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations | Emerging Cross-Sectional Technologies | 87 | Expired |
| US5981447A | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Emerging Cross-Sectional Technologies | 77 | Expired |
| US6165947A | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Emerging Cross-Sectional Technologies | 70 | Expired |
| US6667280B2 | Fluid system having controllable reversible viscosity | Emerging Cross-Sectional Technologies | 66 | Expired |
| US6342467B1 | Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations | Emerging Cross-Sectional Technologies | 58 | Expired |
| US7192908B2 | Composition and method for treating a subterranean formation | Emerging Cross-Sectional Technologies | 47 | Expired |
| US7028775B2 | Compositions and methods for treating a subterranean formation | Chemistry; Metallurgy | 43 | Expired |
| US6638896B1 | Fluids and techniques for hydrocarbon well completion | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6929070B2 | Compositions and methods for treating a subterranean formation | Chemistry; Metallurgy | 40 | Expired |
| US6806236B2 | Composition and method for treating a subterranean formation | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7589050B2 | Composition comprising a fully dissolved non-HF fluoride source and method for treating a subterranean formation | Emerging Cross-Sectional Technologies | 27 | Active |
| US7036594B2 | Controlling a pressure transient in a well | Fixed Constructions | 27 | Expired |
| US7451819B2 | Openhole perforating | Fixed Constructions | 25 | Expired |
| US7182138B2 | Reservoir communication by creating a local underbalance and using treatment fluid | Fixed Constructions | 24 | Expired |
| US9133683B2 | Chemically targeted control of downhole flow control devices | Fixed Constructions | 23 | Active |
| US7119050B2 | Fluid system having controllable reversible viscosity | Chemistry; Metallurgy | 20 | Expired |
| US7878246B2 | Methods of perforation using viscoelastic surfactant fluids and associated compositions | Chemistry; Metallurgy | 13 | Active |
| US6924255B2 | Composition and method for treating a subterranean formation | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7984761B2 | Openhole perforating | Fixed Constructions | 5 | Active |
| US7288505B2 | Fluid system having controllable reversible viscosity | Chemistry; Metallurgy | 5 | Active |
| US9109440B2 | Estimating diffusion coefficient for a reservoir stimulation fluid | Fixed Constructions | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.