Inventor

TOLLEFSEN EDWARD M

US3 patents

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

SCHLUMBERGER TECHNOLOGY CORP

1 patent

US5477921ADec 26, 1995

Method and system for logging a well while fishing for the logging tool

SCHLUMBERGER TECHNOLOGY CORP34 citations86

RASMUS JOHN

1 patent

US9228430B2Jan 5, 2016

Methods for evaluating cuttings density while drilling

RASMUS JOHN5 citations68

TOLLEFSEN EDWARD M

1 patent

US8727035B2May 20, 2014

System and method for managing temperature in a wellbore

TOLLEFSEN EDWARD M4 citations57