Patent ID: 8776591

Claim:
A multizone testing method for testing a plurality of subterranean layers intersected by a well, comprising: (a) running a multizone testing drill stem testing system into the well, the multizone testing system comprising an upper subsystem, a lower subsystem, and a communication system, wherein: the upper subsystem comprises: a wireless control station, and a main isolation packer for isolating the upper subsystem from the lower subsystem; the lower subsystem comprises: an array of individual apparatuses connected in series, each individual apparatus being adapted for the testing of one layer and comprising a series of remotely activated tools for hydraulically isolating and testing a corresponding layer; and the communication system comprises: communication means between the control station and the surface and between the control station and each of the individual apparatuses in order to control the remotely activated tools of each of the individual apparatuses for sequential testing of the layers; (a′) positioning the multizone testing system into the well such that each of the individual apparatuses of the lower subsystem is adjacent to a layer to be tested; (b) sequentially testing the subterranean layers, for performing a well test, by controlling the remotely activated tools of the individual apparatuses; and (c) controlling the remotely activated tools of the individual apparatuses for a commingled test of at least two tested adjacent layers via reopening the tester valves of at least two already tested adjacent layers and testing the commingled flow.