Morgan Stanley analysts recently included this chart of crude production costs. Onshore Middle East oil sites are much cheaper to tap than North American shale, which costs about $65 per barrel to extract.
1. ponder-reflect deeply on a subject; I mulled over the events of the afternoon; philosophers have speculated on the question of God for thousands of years; The scientist must stop to observe and start to excogitate.
up vote 3 down vote accepted. The phrase 'keep in mind' can have different meanings. I have differentiated and collected words for you as follows: turn over in one's mind. consider, recognize, reckon, acknowledge, cogitate, concede, scrutinize, speculate. think about seriously. cherish, ponder, muse-over, imagine, hold, heed.