Oil rock
Crossword Clue

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AnswerCrossword Clue
NAPHTHARock-oil.
SHALEOil rock
SHALEOil-yielding rock
SHALEOil-bearing rock
SHALEOil-producing rock
SHALEOil--producing rock
SHALERock that may yield oil
traparrangement of rock strata that favors the accumulation of oil and gas
petroleumA liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, kerosene, and diesel oil; oil
muidmixture of water, clay, and chemicals used in oil-well drilling and having various functions (as lubrication and cooling of the bit and flushing of rock particles to the surface)