Michael H. Johnson
174Patents
33h-index
136Co-inventors
93Inventor score
Filing activity: Dec 4, 1989 → Sep 8, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5829520A | Method and apparatus for testing, completion and/or maintaining wellbores using a sensor device | Fixed Constructions | 420 | Expired |
| US6167965A | Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores | Mechanical Engineering; Lighting; Heating | 245 | Expired |
| US6281489A | Monitoring of downhole parameters and tools utilizing fiber optics | Physics | 242 | Expired |
| US6588266B2 | Monitoring of downhole parameters and tools utilizing fiber optics | Physics | 240 | Expired |
| US6112817A | Flow control apparatus and methods | Fixed Constructions | 162 | Expired |
| US6268911A | Monitoring of downhole parameters and tools utilizing fiber optics | Physics | 158 | Expired |
| US5623993A | Method and apparatus for sealing and transfering force in a wellbore | Fixed Constructions | 118 | Expired |
| US5667023A | Method and apparatus for drilling and completing wells | Fixed Constructions | 115 | Expired |
| US5662170A | Method of drilling and completing wells | Fixed Constructions | 114 | Expired |
| US5868210A | Multi-lateral wellbore systems and methods for forming same | Fixed Constructions | 108 | Expired |
| US8573295B2 | Plug and method of unplugging a seat | Fixed Constructions | 100 | Active |
| US5996690A | Apparatus for controlling and monitoring a downhole oil/water separator | Performing Operations; Transporting | 86 | Expired |
| US6531694B2 | Wellbores utilizing fiber optic-based sensors and operating devices | Physics | 81 | Expired |
| US6006844A | Method and apparatus for simultaneous coring and formation evaluation | Fixed Constructions | 78 | Expired |
| US5325921A | Method of propagating a hydraulic fracture using fluid loss control particulates | Emerging Cross-Sectional Technologies | 76 | Expired |
| US7040390B2 | Wellbores utilizing fiber optic-based sensors and operating devices | Physics | 72 | Expired |
| US7784543B2 | Device and system for well completion and control and method for completing and controlling a well | Fixed Constructions | 68 | Active |
| US8631876B2 | Method of making and using a functionally gradient composite tool | Emerging Cross-Sectional Technologies | 67 | Active |
| US6787758B2 | Wellbores utilizing fiber optic-based sensors and operating devices | Physics | 65 | Expired |
| US8053397B2 | Using nanoparticles for water flow control in subterranean formations | Chemistry; Metallurgy | 63 | Active |
| US6279658A | Method of forming and servicing wellbores from a main wellbore | Fixed Constructions | 62 | Expired |
| US7201221B2 | Wellbores utilizing fiber optic-based sensors and operating devices | Physics | 57 | Expired |
| US7793714B2 | Device and system for well completion and control and method for completing and controlling a well | Fixed Constructions | 56 | Active |
| US6283210A | Proactive conformance for oil or gas wells | Fixed Constructions | 52 | Expired |
| US6585044B2 | Method, system and tool for reservoir evaluation and well testing during drilling operations | Fixed Constructions | 49 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.