Triplex inner tube

(copy 1)

General introduction

To improve recovery of undisturbed cores in soft, non-homogeneous or fractured formations, the triplex inner tube made of transparent plastic is most commonly used. The core barrel, mentionned in the list can be equipped with the liners. The core barrel are then fitted with bottom discharge bits. The drilling mud flushing through the holes on the surface of the bit

reduces considerably erosion of the cores. The transparent liner, not attached to the inner tube, is easily extracted, reducing so down times. To upgrade a double tube core barrel to a triple tube, only 3 parts are to be replaced : core lifter, core lifter case and the drill bit.

Fiche technique

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