london feb 1 reuters  africas secondbiggest oil exporter angola finalised term allocations of crude cargoes loading in march while tight oil markets kept offers high  chinese refiners sinochem and unipec will receive nine and two cargoes respectively from sonangol  the angolan state refiner sold out of its two spot cargoes of girassol earlier in the trading cycle  demand remains strong and offers have barely waned in two weeks across several export regions with north sea crude grade ekofisk bid at its highest in more than a decade  steepening backwardation has yet to dent differentials significantly because the physical market remains undersupplied  european buyers who helped to prop up a price rally especially in nigerian crude could soon spurn oil from the region because of the market structure and freight rates traders said  few planned run cuts in europe and an outlook for higher demand as economies recover from the covid19 pandemic will keep differentials relatively high they added  offers for angolan crude have stayed high despite a dropoff in purchases from chinese independent refiners after recent quota changes  opec missed its oil production target by more than 800000 barrels per day bpd on average last year missing out on billions of dollars in revenue and hurting members that have struggled to raise cash to invest data seen by reuters showed read more  stocks of oil in some of the worlds top economies have fallen to their lowest in almost a decade and a drive to refill them could nudge oil toward 100 a barrel banks and analysts said read more