Banner Ad Design Project -Oil and Gas Value Chain

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I am needing to create a simple graphic like the one here:
size: 720x300
http://designerstoolbox.com/designresources/banners/examples/720x300.php
Oil and Gas Value Chain:
The oil industry has three levels: upstream, midstream, and downstream which encompass the main segments in the supply chain. The upstream level includes the exploration, drilling, and production of crude oil and the midstream level includes the transportation and trading of crude oil to refineries. The downstream level refers to the refining of crude oil into finished product, the storage of crude oil, and the distribution and marketing of crude oil to wholesalers and retailers.
http://www.petrostrategies.org/images/value_chain.gif
http://www.petroleumonline.com/modules/m008/imgs/fig_001.jpg
Here is another that is more for reference:
http://www.duke.edu/web/soc142/team9/GVC_clip_image002.jpg
https://www.google.com/search?q=oil+value+chain&hl=en&tbo=u&prmd=imvns&tbm=isch&source=univ&sa=X&ei=I1hsUOuEC-SK2wXry4DAAg&ved=0CDMQsAQ&biw=1680&bih=925
Industry/Entity Type
Marketing