The color(s) green, blue, black, white, and gray is/are claimed as a feature of the mark.
The mark consists of a teardrop shape in green with a globe design having the continents in green and the parallels of latitude and the meridians of longitude in blue with a drawing of a whooping crane in gray, black and white behind the globe and an oil derrick in black behind the whooping crane and the letters "EFD" in green to the lower right of the teardrop design.
ENVIRONMENTALLY FRIENDLY DRILLING