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Keywords: core block
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Proceedings Papers

Paper presented at the Gas Technology Symposium, September 15–16, 1966
Paper Number: SPE-1641-MS
... barrels were used almost exclusively. Employing this method required drill rods to be pulled every time there was a core block or when the core barrel was filled to capacity (normally every ten feet). The E. J. Long year Company, in an effort to effect higher core recovery and speed up drilling progress...

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