Crude oil futures extend gains after overnight vault over $90/b

Crude oil futures were higher in mid-morning Asian trade Feb. 4, extending strong overnight gains and sending both benchmarks further above the $90/b handle as a deep freeze sweeps across the US and shuts in production. At 10:53 am Singapore time (0253 GMT), the ICE April Brent futures contract was up 47 cents/b (0.52%) from the previous close at $91.58/b,…