Repeat Formation Tester. A high resolution down hole logging tool which records reservoir pressures at multiple points in a well and may on occasion be configured to obtain several small samples of gas, oil and/or other fluids over a reservoir interval.
A 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. RFT is a trademark of Schlumberger.
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