(EnergyAsia, February 18, Monday) — US major Chevron Corporation said its affiliate, Tengizchevroil LLP, will be increasing oil production capacity at the Tengiz field in Kazakhstan by 90,000 b/d to 400,000 b/d.Chevron holds a 50% stake in Tengizchevroil while KazMunaiGas holds 20 %, ExxonMobil Kazakhstan Ventures Inc 25 % and LUKArco 5%.A sour gas injection…