- Darby Equipment Company
Supplier of quality equipment for the international pipeline industry.
http://www.darbyequip.com/
- Helmerich & Payne
Tulsa based energy exploration and production company.
http://www.hpinc.com/
- Parker Drilling Company
Worldwide service company providing drilling and rental tool services to the energy industry.
http://www.parkerdrilling.com/
- Petroleum Equipment Institute
Leading authority and source of information for the petroleum marketing and liquid handling equipment industry.
http://www.peinet.org/
- Tri-Petro International
International equipment supplier specializing in locating, quoting, purchasing, and exporting the equipment you are looking for.
http://www.tripetrointernational.com/
- Universal Field Services, Inc
Provides coordinated Land and Right of Way services for government agencies and the pipeline, telecommunications and electric utilities industries.
http://www.ufsrw.com/
- Williams Companies
Tulsa based global energy and communications company.
http://www.williams.com/
- Williams Energy
Energy marketing and trading including natural gas, petroleum, petrochemicals and bio-energy.
http://www.williamsenergy.com/
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