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.
mid-14c., a beholding, looking at, also keeping in mind, from Old French consideracion (12c., Modern French considÃ©ration), from Latin considerationem (nominative consideratio) consideration, contemplation, reflection, noun of action from past participle stem of considerare (see consider).