The repeat formation tester (RFT) is operated by an electrically driven hydraulic system so that it can be set and retracted as often as necessary to pressure test all zones of interest on one trip in the well. Two separate fluid tests can also be taken on one trip. [[Formation pressure|Formation pressures]] are recorded at the surface in both digital and analog form. See [[formation tester]]. RFT is a mark of Schlumberger.

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