Randall S. Shafer
38Patents
6h-index
28Co-inventors
65Inventor score
Filing activity: Oct 20, 2011 → Jan 5, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10871050B2 | Nano-thermite well plug | Fixed Constructions | 10 | Active |
| US10760374B2 | Tool for metal plugging or sealing of casing | Electricity | 10 | Active |
| US10738567B2 | Through tubing P and A with two-material plugs | Fixed Constructions | 9 | Active |
| US10316612B2 | Two-material P and A plug | Fixed Constructions | 9 | Active |
| US11401777B2 | Through tubing P and A with two-material plugs | Fixed Constructions | 7 | Active |
| US10648279B2 | Helical coil annular access plug and abandonment | Emerging Cross-Sectional Technologies | 7 | Active |
| US8911179B2 | Dual-derrick ice-worthy jack-up drilling unit | Fixed Constructions | 6 | Active |
| US8899879B2 | Structure-supported jackup system | Fixed Constructions | 5 | Active |
| US11377925B2 | Through tubing P and A with bismuth alloys | Fixed Constructions | 5 | Active |
| US8967273B2 | System for detecting, containing and removing hydrocarbon leaks in a subsea environment | Fixed Constructions | 4 | Active |
| US9255446B2 | Pre-positioned capping device for source control with independent management system | Fixed Constructions | 3 | Active |
| US9347270B2 | Pre-positioned capping device and diverter | Fixed Constructions | 2 | Active |
| US8870497B2 | Ice worthy jack-up drilling unit with conical piled monopod | Fixed Constructions | 2 | Active |
| US8807875B2 | Ice worthy jack-up drilling unit with conical piled monopod and sockets | Fixed Constructions | 2 | Active |
| US8899880B2 | Structure-assisted jackup system | Fixed Constructions | 2 | Active |
| US10260288B2 | Pre-positioned capping device on high pressure wells | Fixed Constructions | 2 | Active |
| US8851799B2 | Ice worthy jack-up drilling unit with pre-loading tension system | Fixed Constructions | 1 | Active |
| US8821071B2 | Conical piled monopod | Fixed Constructions | 1 | Active |
| US10760375B2 | P and A setting with exothermic material | Electricity | 1 | Active |
| US8801333B2 | Ice worthy jack-up drilling unit with gas agitation and leg ice shields | Fixed Constructions | 1 | Active |
| US12129735B2 | Tool for metal plugging or sealing of casing | Electricity | 1 | Active |
| US10584554B2 | Two-material PandA plug | Fixed Constructions | 1 | Active |
| US11486222B2 | P and A setting with exothermic material | Electricity | 1 | Active |
| US11905789B2 | Helical coil annular access plug and abandonment | Emerging Cross-Sectional Technologies | 0 | Active |
| US11753898B2 | PandA setting with exothermic material | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.