History Timeline

With nearly 75 years of rich history working closely with customers both on and off the oil and gas fields, Wellbore Integrity Solutions is committed to continuing this solid legacy foundation as we move forward creating new history. We have the quality products and services in our brands DRILCO, Thomas Tools and TrackMaster, to name a few, that deliver results. Wellbore Integrity Throughout The Life Of The Well.

Servco Legacy Logo-01_web
1946
SERVCO Founded.
Servco Legacy Logo-01_web
DRILCO legacy logo_web
1953
DRILCO Oil Tools Inc. Founded.
DRILCO legacy logo_web
Legacy Thomas Tools Logo
1961
Thomas Tools Founded as Premium Drill Pipe Rental Provider.
Legacy Thomas Tools Logo
DRILCO Servco Buttons_web
1963
SERVCO Merged with
Smith International.
DRILCO Servco Buttons_web
1967
DRILCO Merged with
Smith International.
1971
DRILCO wins Petroleum Engineering award for Hevi-Wate™ Heavy Wall Drill Pipe.
1974
Opening of the Rankin Rd. Manufacturing Campus,
Houston, TX.
A-Z trackmaster_web
1993
Smith International acquired
A-Z/Grant.
A-Z trackmaster_web
1994
Thomas Tools merged with
W-H Energy Services.
TrackMaster-Award_web-1
1995
TrackMaster™ introduced.
Also awarded special meritorious engineering award for innovation and efficiency for the TrackMaster one-trip window-milling system.
TrackMaster-Award_web-1
RED BARON
1996
Smith International acquired
Red Baron Fishing.
RED BARON
1997
Smith International acquired
Tri-Tech Fishing, and Houston Engineers (HE).
2002
Thomas Tools added Thomas Tubing Specialists Inspection Division.
2008 W-H Energy-Smith
2008
W-H Energy Services merged with Smith International.
2008 W-H Energy-Smith
2010
Schlumberger acquired Smith International.
2016
Introduction of ProMILL™ for
well abandonment.
2019
WIS acquires former Smith International businesses DRILCO, Fishing & Remedial, and Thomas Tools from Schlumberger.
June 2020
WIS and Lee Energy Systems jointly announce a strategic, operational, and distribution alliance agreement for Lee Energy Systems’ portfolio of innovative products and technologies.
November 2020
Wellbore Integrity Solutions Introduces ProMILL Duo, Dual Casing Section Milling System
December 2020
Wellbore Integrity Solutions and Reactive Downhole Tools Announces Exclusive Licensing Agreement for the CHIMERA Product Line of Wellbore Cleanout Tools.