i ▁National ▁O il ▁Company ▁() ▁or ▁AD NO C ▁is ▁the ▁state - owned ▁oil ▁company ▁of ▁the ▁United ▁Arab ▁Em ir ates ▁( U AE ). ▁According ▁to ▁the ▁O il ▁& ▁Gas ▁Journal , ▁as ▁of ▁January ▁ 2 0 1 5 , ▁the ▁U AE ▁holds ▁the ▁sevent h - larg est ▁proven ▁res erves ▁of ▁oil ▁in ▁the ▁world ▁at ▁ 9 7 . 8 ▁billion ▁bar rel s . ▁Most ▁of ▁these ▁res erves ▁are ▁located ▁in ▁Ab u ▁D hab i . ▁It ▁is ▁the ▁world ' s ▁ 1 2 th ▁largest ▁oil ▁company ▁by ▁production , ▁producing ▁ 3 . 1 ▁million ▁bar rel s ▁per ▁day . ▁It ▁is ▁the ▁U AE ' s ▁largest ▁company . ▁ ▁Oper ations ▁ ▁AD NO C ▁is ▁one ▁of ▁the ▁world ' s ▁largest ▁energy ▁companies ▁measured ▁by ▁both ▁res erves ▁and ▁production . ▁AD NO C ▁has ▁ 1 6 ▁subs idi ary ▁companies ▁in ▁up stream , ▁mid stream , ▁and ▁down stream ▁stages ▁of ▁production . ▁AD NO C ▁develop s ▁both ▁on sh ore ▁and ▁off sh ore ▁gas ▁fields . ▁The ▁company ▁oper ates ▁two ▁oil ▁ref iner ies , ▁R uw ais ▁and ▁U mm ▁Al ▁Nar . ▁AD NO C ▁exports ▁natural ▁gas ▁in ▁the ▁form ▁of ▁li que f ied ▁natural ▁gas ▁( L NG ) ▁in ▁addition ▁to ▁producing ▁supplies ▁for ▁local ▁electric ity ▁and ▁water ▁util ities , ▁to ▁other ▁domestic ▁indust ries ▁including ▁pet