PetroChina â Xinjiang made a new gas discovery in the Junggar Basin in April 2020. Shatan 2, a NFW, tested 847 Mcf/d of gas from 5,490 to 5,589 m in the Permian Fencheng Formation. The well is drilled in the Shanwan Sag and the success indicated a gas play fairway of 3,200 sq km.   Background Information  In December 2018, PetroChina made a new oil discovery in Shatan 1 in the Shanwan Sag. The well tested 190 b/d of oil from 5,344 to 5,375 m in the Permian Wuerhe Formation. Shatan 1 is drilled in the northwest Shawan Sag. The well also encountered good oil shows in other formations during drilling, such as Triassic Baikouquan and Karamay formations. The success of the well indicated a new exploration potential prospective area for the Wuerhe play fairway.  There are only a few small fields around this area with main reservoir in the Jurassic Sangonghe formation. The success of the well indicated a new exploration potential prospective area for the Wuerhe play fairway.  According to current understanding, The Shawan Sag, geologically, is very similar to the Mahu Sag where PetroChina has approved a giant field. It is expected to find another similar size of field in the Shawan Sag area.
China (Junggar B.) Shatan (Ju) 1 op. by PETROCHINA (100%) in Shamenzi block, total depth 5566 m tested 847 Mcfg/d from 5,490-5,589m in the Permian Fencheng fm. Shatan-1 (2018) tested 190 bo/d from the Permian Wuerhe fm + oil shows in the Triassic Baikouquan + Karamay fm's.