BP Midstream offshore pipeline volumes rise 12%, onshore levels lag in first quarter Source: Reuters Overall, the amount of crude oil and refined products shipped on BP Midstream pipelines was up 8% to 1.7 million barrels per day in the three months ended March 31 compared with the fourth quarter of 2020, Jack Collins, the company’s chief financial officer, said on a company earnings call. Oil volumes on offshore pipelines – including on the 400,000 barrel-per-day Mars crude oil line off of Louisiana – grew in the first quarter largely due to better weather than the previous quarter, when multiple storms forced U.S. Gulf Coast production to shut, Collins said.