How does fracking differ from traditional petroleum exploration?

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After a borehole is drilled in the vicinity of an oil and natural gas deposit, fracking operations use explosive charges to crack rocks near these fuel-bearing rocks, followed by the pumping of fracking fluid to widen the cracks—which frees natural gas and petroleum so they can be extracted. This process differs from more traditional methods of natural gas and petroleum exploration, which rely primarily on drilling directly into oil and natural gas deposits.