PetroChina â Xinjiang made an important breakthrough in the Junggar Basin. Chepai 24, a NFW, tested 845 b/d of oil and 586 Mcf/d of gas through a 6 mm choke after a racking from the Permian Jiamuhe 3 Formation on 14 May 2020.   The well was drilled in the west of the Shawan Sag near Chepaizi High in the northwest of the basin. The existing fields found in this area has main reservoirs in the Jurassic and Triassic formation. This is the first commercial oil and gas flow achieved from the Jiamuhe Formation in this area.  The Jiamuhe Formation consist of coarse-grained clastics deposited in an alluvial fan environment and some volcanic rocks. It has been identified as reservoirs mainly in the northwestern.   Background Information    Several exploration successes have been achieved recently in the Shawan area in the Junggar Basin.   In April 2020, PetroChina made a new gas discovery in the Junggar Basin in April 2020. Shatan 2 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.   In October 2019, PetroChina made an important breakthrough in the Junggar Basin. Chetan 1 tested commercial oil flow in the Carboniferous Tailegula Formation on 22 October 2019. This is the first well which makes a breakthrough in the Carboniferous in this area and it indicates a significant potential prospective for carboniferous play in this area.   In December 2018, PetroChina made oil discovery in Shatan 1 in the Shawan 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.  The Junggar Basin is one of the key exploration and production base for PetroChina. The company has approved more than 25 oil and gas fields by 2018 with total of 22 bn bbls of oil and 6 Tcf of gas in place reserves. In 2019 PetroChina produced 12.47 million tons of oil (249,000 b/d) in the basin, and company plans to increase oil production to 260,000 b/d by 2020.
Chepal 24 nfw. in Shawan Sag near Chepaizi High, Basin, tested 845 bo/d + 586 Mcfg/d on 6mm choke from a fracked Permian Jiamuhe 3 fm on 14 May '20. This is the 1st commercial flow from the Jiamuhe in this area (otherwise Jurassic + Triassic).