Volker Krueger
78Patents
34h-index
88Co-inventors
91Inventor score
Filing activity: Mar 5, 1991 → Oct 11, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6176323A | Drilling systems with sensors for determining properties of drilling fluid downhole | Fixed Constructions | 394 | Expired |
| US6206108A | Drilling system with integrated bottom hole assembly | Fixed Constructions | 234 | Expired |
| US6732052B2 | Method and apparatus for prediction control in drilling dynamics using neural networks | Fixed Constructions | 176 | Expired |
| US6059051A | Integrated directional under-reamer and stabilizer | Fixed Constructions | 136 | Expired |
| US6513606B1 | Self-controlled directional drilling systems and methods | Fixed Constructions | 135 | Expired |
| US6581455B1 | Modified formation testing apparatus with borehole grippers and method of formation testing | Fixed Constructions | 109 | Expired |
| US6427783B1 | Steerable modular drilling assembly | Fixed Constructions | 85 | Expired |
| US6585045B2 | Formation testing while drilling apparatus with axially and spirally mounted ports | Fixed Constructions | 84 | Expired |
| US6609568B2 | Closed-loop drawdown apparatus and method for in-situ analysis of formation fluids | Physics | 81 | Expired |
| US6247542A | Non-rotating sensor assembly for measurement-while-drilling applications | Fixed Constructions | 73 | Expired |
| US5168941A | Drilling tool for sinking wells in underground rock formations | Fixed Constructions | 70 | Expired |
| US6429653B1 | Method and apparatus for protecting a sensor in a drill collar | Physics | 67 | Expired |
| US6981561B2 | Downhole cutting mill | Fixed Constructions | 66 | Expired |
| US6516898B1 | Continuous wellbore drilling system with stationary sensor measurements | Fixed Constructions | 63 | Expired |
| US7174975B2 | Control systems and methods for active controlled bottomhole pressure systems | Fixed Constructions | 61 | Expired |
| US6769497B2 | Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications | Fixed Constructions | 57 | Expired |
| US7400262B2 | Apparatus and methods for self-powered communication and sensor network | Physics | 56 | Expired |
| US6427530B1 | Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement | Fixed Constructions | 56 | Expired |
| US6913095B2 | Closed loop drilling assembly with electronics outside a non-rotating sleeve | Fixed Constructions | 55 | Expired |
| US6609579B2 | Drilling assembly with a steering device for coiled-tubing operations | Fixed Constructions | 54 | Expired |
| US6289998A | Downhole tool including pressure intensifier for drilling wellbores | Fixed Constructions | 51 | Expired |
| US6446736B1 | Non-rotating sensor assembly for measurement-while-drilling applications | Fixed Constructions | 50 | Expired |
| US6543132B1 | Methods of making mud motors | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7503403B2 | Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements | Fixed Constructions | 48 | Expired |
| US7806203B2 | Active controlled bottomhole pressure system and method with continuous circulation system | Fixed Constructions | 47 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.