Inventor
ALDRED WALTER DAVID
GB15 patents
⚠️ This page may combine multiple inventors who share the name “ALDRED WALTER DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
7 patentsUS6766254B1Jul 20, 2004
Method for updating an earth model using measurements gathered during borehole construction
SCHLUMBERGER TECHNOLOGY CORP91 citations95
US9631477B2Apr 25, 2017
Downhole determination of drilling state
SCHLUMBERGER TECHNOLOGY CORP8 citations82
US11732571B2Aug 22, 2023
Downhole tool with sensor set(s) sensitive to circumferential, axial, or radial forces
SCHLUMBERGER TECHNOLOGY CORP2 citations70
US11668184B2Jun 6, 2023
Instrumented rotary tool with compliant connecting portions
SCHLUMBERGER TECHNOLOGY CORP0 citations59
US11434748B2Sep 6, 2022
Instrumented rotary tool with sensor in cavity
SCHLUMBERGER TECHNOLOGY CORP0 citations59
US10920584B2Feb 16, 2021
Detection of influx and loss of circulation
SCHLUMBERGER TECHNOLOGY CORP1 citations55
US10767427B2Sep 8, 2020
Control of managed pressure drilling
SCHLUMBERGER TECHNOLOGY CORP0 citations34
JOHNSON ASHLEY
4 patentsUS8757294B2Jun 24, 2014
System and method for controlling a drilling system for drilling a borehole in an earth formation
JOHNSON ASHLEY21 citations92
US8727036B2May 20, 2014
System and method for drilling
JOHNSON ASHLEY17 citations91
US8899352B2Dec 2, 2014
System and method for drilling
JOHNSON ASHLEY10 citations83
US9494028B2Nov 15, 2016
Measuring speed of rotation of a downhole motor
JOHNSON ASHLEY3 citations72