Which, probably not coincidentally, is well under the break-even price for shale oil projects.
We might prefer to read, as a comment on the crisis, an account of life in a Bakken shale “man camp” or a Sacramento Hooverville.
Thanks to the shale revolution, domestic oil production is soaring.
Our experience with shale gas shows us that the payoffs on these public investments don't always come right away.
The controversial technique of fracturing, or fracking, involves drilling into rock formations to release oil embedded in shale.
How the shale and sandstone layers are formed will be the subject of a future chapter.
The abutments were constructed at the street and the excavation was clay and shale.
They learned that many of the mountains were extinct volcanoes and admired the brilliant colored sandstone and shale formations.
The minerals are lime and sandstone, and extensive beds of coal, and shale.
A thin strip of shale marked his 100-yard dead-line, and the instant Langdon set his foot on this David fired.
1747, possibly a specialized use of Middle English schale "shell, husk, pod" (late 14c.), also "fish scale," from Old English scealu (see shell (n.)) in its base sense of "thing that divides or separate," in reference to the way the rock breaks apart in layers. Cf. Middle English sheel "to shell, to take off the outer husk" (late 15c.). Geological use also possibly influenced by German Schalstein "laminated limestone," and Schalgebirge "layer of stone in stratified rock."
A sedimentary rock formed from layers of clay.