-
-
-
Wellbore mills and inserts
-
Patent number 5,908,071
-
Issue date Jun 1, 1999
-
Weatherford/Lamb, Inc.
-
Christopher P. Hutchinson
-
E21 - EARTH DRILLING MINING
-
Wellbore section milling
-
Patent number 5,862,870
-
Issue date Jan 26, 1999
-
Weatherford/Lamb, Inc.
-
Christopher P. Hutchinson
-
E21 - EARTH DRILLING MINING
-
Section milling
-
Patent number 5,642,787
-
Issue date Jul 1, 1997
-
Weatherford U.S., Inc.
-
Christopher P. Hutchinson
-
E21 - EARTH DRILLING MINING
-