Block XX, Tamsag Basin in FE Mongolia, TD 2,960m, 1st DST on a section at the base of the Lower Tsagaantsav fm sands proved an oil column of at least 70m, but the zone was tight with very limited inflow, 2nd DST flowed 821 b/d of 46Â° API oil from upper portion of the sands, with no artificial stimulation. DQE rig 1. Pre-drill estimates of 25 MMbbl may be conservative, Petro Matad will apply for an exploitation licence to investigate further and potentially put Heron-1 on production next year.
Heron 1 nfw in Block XX, in NE Mongolia, 1st DST on a section at the base of the Lwr Cretaceous Lower Tsagaantsav fm sands proved an oil column of at least 70m, but the zone was tight with very limited inflow, 2nd DST flowed 821 b/d of 46Â° API oil from upper portion of the sands, with no artificial stimulation. The discovery has proven a continuation of the petroleum system in the Tamsag basin from producing oilfields operated by PetroChina in Block XIX farther north TD=2960m,