Repeat Formation Tester vs. Full Production Test
A question that usually comes up is whether a Repeat Formation Tester (RFT) [generally referred to as MDT, which specifically refers to the tool from Schlumberger] can replace a full Production Test [generally referred to as DST or well test]. Although the principle of operation of these two techniques can be considered similar -creating a pressure disturbance in the reservoir by moving fluids to obtain reservoir parameters, as well as collecting fluid samples- one must keep in mind the large difference of the volume probed by either technique. The following image illustrates in a very basic way the mode of operation of each technique.
One can then conclude that these two techniques are complementary rather than one being a substitute for the other. Careful consideration to the overall program objectives must be taken into account before deciding on one versus the other.
One can then conclude that these two techniques are complementary rather than one being a substitute for the other. Careful consideration to the overall program objectives must be taken into account before deciding on one versus the other.
