Select Clients

Amoco Oil Company

ARCO

Baker Oil Tools

Beylik Drilling

Blue Ridge Energy

Chevron Oil

Edgington Oil Company

Exxon Corporation

Getty Oil

Hydril Corporation

Mobil Oil

PG&E

Plant & Field Service Corp.

Shell Oil

Southern California Edison

Texaco

Thrifty Oil Company

Valero Energy Corp.

Wolverine Energy