Funtap/Shutterstock Crude oil production by the 22-member group remained steady in January at 40.63 million barrels per day.Output by the 18 members with quotas grew by 110,000 b/d, putting them 66,000 b/d over their collective target.The start of Kazakhstan’s expansion of its giant Tengiz field put the Central Asian producer 200,000 b/d above its monthly target. Save for later Print Download Share Crude oil production by the 22-member Opec-plus in January was flat on a monthly basis at 40.63 million b/d, a preliminary assessment by ʶԳ shows.