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.
2 an effort to do or accomplish something let's take another shot at the puzzle Synonyms assay [archaic], bash [chiefly British], bid, crack, endeavor, essay, fling, go, offer, pass, attempt, stab, trial, try, whack, whirlRelated Words striving, struggle, throes, undertaking; trial and error.