Naturally fractured reservoirs present a production paradox. It is not an exaggeration to say that the big part of the world oil and gas reserves are concentrated in naturally fractured reservoirs (NFR). Naturally fractured formations may have different genesis. Igneous, metamorphic and sedimentary rocks undergo of fracturing and faulting as well while forming extensive and narrow system of highly conductive zones. In this paper, we investigate and analyze core study results, interference test results conducted in naturally fractured formation on gas field, draw conclusions about the conducted test and analyze interpretation results. At the end of this paper, we give recommendations for using the test for determinations of high permeable zone in naturally fractured reservoir.

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