Inventor

MACDOUGALL THOMAS D

US18 patents

⚠️ This page may combine multiple inventors who share the name “MACDOUGALL THOMAS D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MACDOUGALL THOMAS D

SCHLUMBERGER TECHNOLOGY CORP

System and method for gas shut off in a subterranean well

Apparatus and method for sampling an earth formation through a cased borehole

Flow control device with a permeable membrane

System and method for controlling undesirable fluid incursion during hydrocarbon production

Snorkel device for flow control

Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation

Flow control system for use in a well

Subsurface safety valves and methods of use

Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation

Method and apparatus for pipe-conveyed well logging

Method and apparatus for generating downhole power

Method for motion compensation using wired drill pipe

GAS RES INST

Expandable pin plug for automated use

Method and apparatus for drilling with a flexible shaft while using hydraulic assistance

Method and apparatus for changing bits while drilling with a flexible shaft

SCHLUMBEGER TECHNOLOGY CORP

System and method to seal using a swellable material

PATEL DINESH R

System and method to seal using a swellable material

MEYYAPPAN RAMASWAMY

Control line hybrid junction assembly