Inventor
MARCHAND NICHOLAS RYAN
CA31 patents
⚠️ This page may combine multiple inventors who share the name “MARCHAND NICHOLAS RYAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT OILWELL VARCO LP
12 patentsUS9347269B2May 24, 2016
Adjustable bend assembly for a downhole motor
NAT OILWELL VARCO LP12 citations83
US9638362B2May 2, 2017
Threaded connections with an adjustable secondary shoulder
NAT OILWELL VARCO LP5 citations73
USRE46746EMar 6, 2018
Mud-lubricated bearing assembly with mechanical seal
NAT OILWELL VARCO LP3 citations72
US8827562B2Sep 9, 2014
Mud-lubricated bearing assembly with mechanical seal
NAT OILWELL VARCO LP5 citations72
US10408274B2Sep 10, 2019
Universal driveshaft assembly
NAT OILWELL VARCO LP5 citations71
US12385337B2Aug 12, 2025
Depth activated downhole adjustable bend assemblies
NAT OILWELL VARCO LP1 citations63
US12209496B2Jan 28, 2025
Downhole adjustable bend assemblies
NAT OILWELL VARCO LP1 citations63
US11952895B2Apr 9, 2024
Wired downhole adjustable mud motors
NAT OILWELL VARCO LP0 citations62
US11668136B2Jun 6, 2023
Wired downhole adjustable mud motors
NAT OILWELL VARCO LP0 citations62
US10184298B2Jan 22, 2019
Adjustable bend assembly for a downhole motor
NAT OILWELL VARCO LP0 citations51
US9771757B2Sep 26, 2017
Downhole motor with concentric rotary drive system
NAT OILWELL VARCO LP1 citations51
US10774875B2Sep 15, 2020
Microfluidic-assisted hydrodynamic lubrication system and method
NAT OILWELL VARCO LP0 citations35
NAT OILWELL DHT LP
6 patentsUS11149498B2Oct 19, 2021
Wired downhole adjustable mud motors
NAT OILWELL DHT LP2 citations72
US10808462B2Oct 20, 2020
Downhole adjustable bend assemblies
NAT OILWELL DHT LP1 citations72
US10337251B2Jul 2, 2019
Downhole adjustable bend assemblies
NAT OILWELL DHT LP3 citations72
US11002099B2May 11, 2021
Valves for actuating downhole shock tools in connection with concentric drive systems
NAT OILWELL DHT LP4 citations71
US11225835B2Jan 18, 2022
Downhole adjustable bend assemblies
NAT OILWELL DHT LP0 citations62
US11629557B2Apr 18, 2023
Hybrid bearing assemblies for downhole motors
NAT OILWELL DHT LP0 citations51
DRECO ENERGY SERVICES ULC
3 patentsUS10767683B2Sep 8, 2020
Thread profiles for rotary shouldered connections
DRECO ENERGY SERVICES ULC2 citations71
US9963937B2May 8, 2018
Method and apparatus for controlling downhole rotational rate of a drilling tool
DRECO ENERGY SERVICES ULC4 citations70
US9822587B2Nov 21, 2017
Method and apparatus for controlling downhole rotational rate of a drilling tool
DRECO ENERGY SERVICES ULC1 citations49
MARCHAND NICHOLAS RYAN
3 patentsUS8500176B2Aug 6, 2013
Interlocking engagement mechanism for an adjustable bent housing
MARCHAND NICHOLAS RYAN5 citations71
US9534638B2Jan 3, 2017
Retention means for a seal boot used in a universal joint in a downhole motor driveshaft assembly
MARCHAND NICHOLAS RYAN6 citations60
US9771761B2Sep 26, 2017
Torque enhanced threaded connection
MARCHAND NICHOLAS RYAN1 citations42