Geoff Downton
37Patents
14h-index
31Co-inventors
77Inventor score
Filing activity: Oct 9, 2001 → Mar 26, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7136795B2 | Control method for use with a steerable drilling system | Fixed Constructions | 85 | Expired |
| US7188685B2 | Hybrid rotary steerable system | Fixed Constructions | 65 | Expired |
| US6601658B1 | Control method for use with a steerable drilling system | Fixed Constructions | 60 | Expired |
| US7836975B2 | Morphable bit | Fixed Constructions | 36 | Active |
| US8763726B2 | Drill bit gauge pad control | Fixed Constructions | 28 | Active |
| US7168510B2 | Electrical transmission apparatus through rotating tubular members | Fixed Constructions | 27 | Expired |
| US8534380B2 | System and method for directional drilling a borehole with a rotary drilling system | Fixed Constructions | 22 | Active |
| US8011452B2 | Steerable drilling system | Fixed Constructions | 20 | Expired |
| US6877241B2 | Measurement of curvature of a subsurface borehole, and use of such measurement in directional drilling | Fixed Constructions | 17 | Expired |
| US7810585B2 | Bi-directional rotary steerable system actuator assembly and method | Fixed Constructions | 17 | Active |
| US7168507B2 | Recalibration of downhole sensors | Fixed Constructions | 17 | Expired |
| US7058512B2 | Downhole rate of penetration sensor assembly and method | Fixed Constructions | 16 | Expired |
| US8302705B2 | Steering system | Fixed Constructions | 14 | Active |
| US8783382B2 | Directional drilling control devices and methods | Fixed Constructions | 14 | Active |
| US8146679B2 | Valve-controlled downhole motor | Mechanical Engineering; Lighting; Heating | 14 | Active |
| US7775299B2 | Method and apparatus for programmable pressure drilling and programmable gradient drilling, and completion | Fixed Constructions | 14 | Active |
| US6715570B1 | Two stage downhole drilling fluid filter | Fixed Constructions | 14 | Expired |
| US8408333B2 | Steer systems for coiled tubing drilling and method of use | Fixed Constructions | 13 | Active |
| US8960329B2 | Steerable piloted drill bit, drill system, and method of drilling curved boreholes | Fixed Constructions | 12 | Active |
| US7968184B2 | Erosion resistant surface and method of making erosion resistant surfaces | Emerging Cross-Sectional Technologies | 12 | Active |
| US7669669B2 | Tool face sensor method | Fixed Constructions | 12 | Active |
| US9035788B2 | Real time telemetry | Fixed Constructions | 10 | Active |
| US7987927B2 | Steering of bent housing mud motor downhole rotation device | Fixed Constructions | 9 | Active |
| US8066085B2 | Stochastic bit noise control | Fixed Constructions | 9 | Active |
| US8645571B2 | System and method for managing and/or using data for tools in a wellbore | Electricity | 8 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.