Peter Wraight
65Patents
18h-index
73Co-inventors
87Inventor score
Filing activity: Mar 20, 1986 → Nov 22, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5107705A | Video system and method for determining and monitoring the depth of a bottomhole assembly within a wellbore | Fixed Constructions | 78 | Expired |
| US4879463A | Method and apparatus for subsurface formation evaluation | Fixed Constructions | 69 | Expired |
| US4721853A | Thermal decay time logging method and apparatus | Physics | 46 | Expired |
| US5349184A | Method and apparatus for reducing matrix density effects on porosity measurements during epithermal neutron porosity well logging | Physics | 45 | Expired |
| US5017778A | Methods and apparatus for evaluating formation characteristics while drilling a borehole through earth formations | Fixed Constructions | 41 | Expired |
| US7564948B2 | High voltage x-ray generator and related oil well formation analysis apparatus and method | Electricity | 39 | Active |
| US4810876A | Logging apparatus and method for determining absolute elemental concentrations of subsurface formations | Physics | 36 | Expired |
| US7500388B2 | Method and apparatus for in-situ side-wall core sample analysis | Fixed Constructions | 30 | Active |
| US6781115B2 | Subsurface radiation phenomena detection with combined and azimuthally sensitive detectors | Physics | 28 | Expired |
| US7365307B2 | Sigma/porosity tools with neutron monitors | Physics | 28 | Expired |
| US6097786A | Method and apparatus for measuring multiphase flows | Physics | 26 | Expired |
| US4928088A | Apparatus for extracting recorded information from a logging tool | Physics | 25 | Expired |
| US5051581A | Method and apparatus for epithermal neutron porosity well logging | Physics | 25 | Expired |
| US5912460A | Method for determining formation density and formation photo-electric factor with a multi-detector-gamma-ray tool | Physics | 25 | Expired |
| US5442173A | Method and system for real-time monitoring of earth formation fracture movement | Physics | 24 | Expired |
| US5180917A | Self-calibrating proportional counter | Physics | 23 | Expired |
| US8173953B2 | Gain stabilization of gamma-ray scintillation detector | Physics | 19 | Active |
| US5841135A | Method and apparatus for measuring formation density and the formation photo-electric factor with a multi-detector gamma-gamma tool | Physics | 18 | Expired |
| US5910654A | Apparatus and method for measuring formation density in rugose boreholes | Physics | 17 | Expired |
| US4926044A | Thermal decay time logging method and apparatus | Physics | 17 | Expired |
| US4814609A | Methods and apparatus for safely measuring downhole conditions and formation characteristics while drilling a borehole | Physics | 17 | Expired |
| US7634059B2 | Downhole imaging tool utilizing x-ray generator | Physics | 16 | Active |
| US7542543B2 | Apparatus and method for well services fluid evaluation using x-rays | Physics | 16 | Active |
| US7507952B2 | Apparatus and method for fluid density determination | Physics | 15 | Active |
| US7639781B2 | X-ray tool for an oilfield fluid | Electricity | 15 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.