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.
3 to make able or possible we'll have our picnic on Thursday, weather permitting Synonyms allow, empower, let, enableRelated Words fit, habilitate, prepare, qualify, ready; approve, endorse (also indorse), sanction; condition, equipNear Antonyms inhibit, preclude; disallow, enjoin, forbid, prohibitAntonyms prevent.