PetroChina â Xijiang reported on 30 November 2017 that company has defined up to 9 bn bbl of 3P oil in place in the Mahu field in the Junggar Basin, among of which 3.7 bn bbl of proven oil in place has been confirmed. The main reservoir of the field is conglomerates in the Triassic Baikouquan Formation.  In December 2014 PetroChina has already reported Mahu field discovery. The field, located in the west slope of the Mahu Sag, had defined 1.4 bn barrels of 3P oil in place within a 100 sq km area. In addition, the company had identified a 2,800 sq km play fairway in the Mahu area with potential of more than 7 bn barrels of in place oil resource.  In 2015 PetroChina started a pilot production project and planned to build the field with 50,000 bo/d capacity. By 2017 Mahu field has been built production capacity of 27,600 b/d of oil, and PetroChina plans to achieve production capacity of 120,000 b/d by 2020.Â  
China (Junggar B.) ? op. by PETCHIN XJ (100.0%) in Mahu block