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.
a short trip for pleasure an occasional sortie to the city to rummage through some of its numerous used-book stores Synonyms jaunt, junket, outing, ramble, sally, sashay, excursion, spinRelated Words journey, travel(s), voyage; circuit, tour; expedition, odyssey, safari; detour; hike, peregrination, trek, walk; pilgrimage.