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FACTBOX: Gustav cuts U.S. oil, gas, threatens commods

(Reuters) - Gustav is first big threat to U.S. Gulf of Mexico energy and port infrastructure since Katrina and Rita in 2005.

The Gulf is the source of 25 percent of domestic oil and 15 percent of the natural gas. More than a third of U.S. refining capacity is on the U.S. Gulf Coast.

Near expected landfall is New Orleans, a big port handling raw material and foodstuff. The Port of South Louisiana is the largest U.S. port in tonnes handled.

On the western edge of the possible target zone is Houston, a major port, oil refining and crude oil and natural gas hub.

Katrina and Rita were Category 5 storms, the top of the hurricane intensity scale. Katrina hit New Orleans in August 2005. Rita hit near the Texas-Louisiana line that September.

Gustav was expected to come ashore as early as Monday on the Gulf Coast as at least a Category 3, though it was weaker Sunday than when it crossed Cuba Saturday.

---- GENERAL IMPACTS ----

- The U.S. Minerals Management Service said Sunday 1.25 million of 1.3 million barrels per day (bpd) of oil production (96.3 percent) and 6.1 billion of 7.4 billion cubic feet per day of gas (Bcfd) production (82.3) had been shut in anticipation of Gustav. Up from 76.8 percent of oil and 37.2 percent of gas Saturday.

- MMS said personnel evacuated from 518 of 717 manned production platforms (72.3 percent), up from 223, and 86 of 121 drilling rigs (71.1 percent) in the Gulf, up from 45.

- NYMEX crude oil surged more than $2 a barrel to more than $117 a barrel in early electronic trading Sunday. Products also rose.

---- FUEL RELIEF ----

- The U.S. Environmental Protection Agency waived summer blend requirements in Louisiana to ease gasoline supply as refineries shut down.

---- OIL IMPORTS THREATENED ----

- Louisiana Offshore Oil Port stopped unloading ships Saturday and shut flows from storage Sunday.

- Oil from the Strategic Petroleum Reserve will be tapped, if necessary, the U.S. Department of Energy said.

---- SPECIFIC CUTS OFFSHORE OIL, GAS OUTPUT ----

- Apache Corp 52,550 bpd oil, 276 mmcfd gas.

- Shell Oil Co 510,000 bpd oil equivalent.

- Exxon Mobil 28,000 bpd oil, 180 mmcfd gas.

- Anadarko 150,000 bpdoes.

- Marathon Oil 11,500 bpd oil, 10.5 mmcfd gas.

- BP Plc and Chevron most production.

- BHP Billiton 50,000 bpd OIL.

- Others including, Petrobras, cut output.

---- OFFSHORE DRILLING IMPACTED ----

- Transocean moved eight semisubmersibles and drill ships out of Gustav’s path, three others fully evacuated.

- Noble Corp moored all eight rigs in the Gulf of Mexico, evacuated personnel by Saturday.

---- REFINERIES SHUT ----

- Exxon Mobil’s 193,000 bpd Chalmette.

- Murphy’s 120,000 bpd Meraux.

- ConocoPhillips’ West Lake and Alliance, total 485,000 bpd.

- Motiva’s 236,000 bpd Norco.

- Marathon’s 250,000 bpd Garyville.

- Citgo’s 430,000 bpd Lake Charles.

- Calcasieu 80,000 bpd Lake Charles

- Alon 80,000 bpd Krotz Springs

- Valero 250,000 bpd St. Charles

---- REFINERIES CUT BACK ----

- Motiva’s 235,000 bpd Convent plant on standby. Its 285,000 bpd Port Arthur plant at minimum rates.

- Three other Valero Energy Corp refineries on reduced runs, contemplating Port Arthur shut down.

---- PIPELINES AFFECTED ----

- Kinder Morgan said its Plantation products pipeline would keep operating long as possible, restart ASAP.

- Operator of Henry Hub, the major south Louisiana pipeline junction for natural gas, shut down Sunday.

- Gas pipeline operator Enbridge stopped taking production Saturday on systems with 6.7 Bcfd capacity.

- El Paso Corp said its Tennessee and Southern Natural gas pipelines saw throughput cuts totaling 637 mmcfd.

---- SHIPPING IMPACTS ---

- Port of Houston closed to inbound traffic at midnight Sunday (0500 Monday GMT); Texas City, Galveston remained open.

- River pilots said Mississippi River traffic at New Orleans halted inbound at noon (1700 GMT) Saturday, outbound as of 6 p.m. central U.S. time (2300 GMT).

- Pilots halt traffic at Lake Charles Sunday.

- Beaumont and Port Arthur, Texas, shut inbound Saturday and to halt outbound Sunday afternoon.

- Bracing for risk of storm winds at ports as far east as Mobile, Alabama.

---- KATRINA AND RITA IN 2005 ----

- There was near total shutdown of Gulf oil and gas output at that time, 1.5 million bpd of oil and 10 Bcfd of gas.

- Twenty-nine percent of U.S. refining was shut at peak.

- Winds and waves destroyed 124 platforms and damaged about 50 others, damaged or wrecked 535 pipeline segments and sank or set adrift 28 drilling rigs, MMS said.

Reporting by Bruce Nichols, Erwin Seba, Chris Kelly and Marcy Nicholson; Editing by Anthony Boadle

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