Top Chinese oil and gas producer PetroChina is stepping up natural gas supplies from both domestic fields and imports to meet customer demand, parent company CNPC said on Monday.  PetroChina raised April gas supplies by 14 percent over a year earlier, CNPC said on its website, without giving specific volumes. Reuters reported on Friday the state major has since early May curbing the feed of gas to some users in the northern and western parts of the country to help head off possible shortages next winter. [nL3N1SN47F] PetroChina lifted production in the first four months of this year at major domestic fields Changqing, Southwest, Tarim and Qinghai by more than 2 percent from the same time in 2017 to 30.5 billion cubic meters, CNPC […]