CORPORATE HEADQUARTERS
1421 S. Sheridan Road
Tulsa, Oklahoma 74112
Phone: (918) 835-3161
Toll-Free: (800) 331-4463
Fax: (918) 831-9497

PENNWELL- HOUSTON
1455 West Loop South, Suite #400
Houston, Texas 77027
Phone: (713) 621-9720
Toll Free: (800) 736-6935
Fax: (713) 963-6285

PENNWELL- NASHUA
98 Spit Brook Road
Nashua, New Hampshire 03062-5737
Phone: (603) 891-0123
Toll Free: (800) 225-0556
Fax: (603) 891-9294

PENNWELL- FAIR LAWN
Vanguard Building 
21-00 Route 208 South
Fair Lawn, New Jersey 07410
Phone: (973) 251-5040
Fax: (973) 251-5065

PENNWELL- UNITED KINGDOM
Warlies Park House
Horseshoe Hill
Upshire Essex, England, UK EN93SR
Phone: +44-199-265-6600
Fax: +44-199-265-6700

PENNWELL- RUSSIA
Ul. Vostochnaya 10, Office 10
Moscow, Russia 115280
Phone: 7-095-580-3201
Fax: 7-095-580-3202

PENNWELL- ASIA
ACT International
Unit 1011, 10F
New Kowloon Plaza
38 Tai Kok Tsui Road
Kowloon, Hong Kong
Phone: 852-2-838-6298
Fax: 852-2-838-2766