The Gulf of Mexico alone accounts for 20 percent of U.S. oil production, and many rigs were also knocked out by the storm.
The national USA gasoline price on Monday stands at $2.38 per gallon, up more than 5 cents from a week ago.
"Although this is less than 20 percent of total refining capacity in the USA, the Gulf Coast region is a major supplier of refined products both locally, and into other parts of the country", Delaney said.
US West Texas Intermediate (WTI) crude futures were at Dollars 46.35 per barrel at 0155 GMT, down 9 cents from their last close. The discount for U.S. WTI versus Brent reached $5.92 a barrel on Tuesday, its widest in more than two years. The contract's peak was $1.7888, the highest for NYMEX gasoline since July 2015.
About 22 percent of U.S. Gulf of Mexico oil production is offline due to Tropical Storm Harvey, the U.S. Department of the Interior's Bureau of Safety and Environmental Enforcement (BSEE) said on Sunday.
Motiva Enterprises chose to close its 603,000bpd plant in Port Arthur, Texas, while Total halved the output of its refinery, which is in the same area. Onshore, numerous nation's refineries remain offline because of heavy flooding in and around the Houston area.
Oil investors are bracing themselves for a turbulent week as Hurricane Harvey continues to tear through Texas - the core of the U.S. oil industry.
Crude markets were also looking at disruptions in Libya and Colombia.
"Around 2-3 million bpd (barrels per day) of refining capacity is offline or in the process of shutting down". Jefferies bank said it was lowering its fourth-quarter Brent oil price estimates to $55 a barrel from $60 and its 2018 forecast to $57 from $64.
This Week at NASA: The Epic Solar Eclipse and More
Although Monday's eclipse was peaking over two minutes in the path of totality, the 2024 eclipse will have peaks of 4½ minutes. Eclipse-viewing glasses that provided a safe way to look at the sun during the eclipse were in short supply nationwide.
Local lawmakers react to House passing education bill
The Republican's Monday signing comes a year after he vetoed a similar measure over concerns about voter fraud. But some of Illinois' largest teacher unions have already lined up against the measure, saying Republican Gov.
Qatar To Return Ambassador To Iran Amid Regional Crisis
Even after Qatar withdrew its ambassador from Iran in 2016, the two countries maintained their valuable commercial ties. Qatar has denied the charge and said this week it was anxious pilgrims from the emirate would be treated badly.
India guru rape case: almost 30 die in violent protests
The guru's Dera Sacha Sauda sect claims to have 50 million followers and campaigns for vegetarianism and against drug addiction. Authorities ordered internet and cellphone services shut down across both Haryana and Punjab as a security precaution.
Turtle-linked Salmonella outbreak sickens 37 in 13 states
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India win series amid crowd trouble
While Dananjaya delivered the spell of his life, Sri Lanka's remaining bowlers were again largely unable to make breakthroughs. Thirimanne, playing his first global match since June 2016, scored 80 off 105 deliveries including five boundaries and a six.