InterOil Scales-Up PNG Operations

[cybersssss]

This is usually a square hole that is dug 10 ft into the ground and lined with re-enforced concrete. The rig Pad is placed around this cellar. This is where the blow out preventer (BOP) goes. Without the cellar, the rig substructure would have to be much higher in order to accomodate the BOP.

http://books.google.com/books?id=eheKh6AoL3EC&pg=PA53&lpg=PA53&dq=cellar+and+rig+pad&source=bl&ots=BpMQxdfvg3&sig=ZiU47_lR7OXaeEW1xsoRtd4ihZk&hl=en&sa=X&ei=QQ7pUuGYMYfMkQeCgYGIAQ&ved=0CEgQ6AEwAA#v=onepage&q=cellar%20and%20rig%20pad&f=false