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When the oil and gas reached the rig, they were diverted not overboard, as might have been wiser, but to a system called the mud-gas separator which spewed gas back onto the rig.
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These are not the lava-spewing kind, but vents from which the earth emits small amounts of gas and mud.
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As for Lafitte, while there have been gas shows in the mud logs, Moffett is afraid to read too much into them until the well has been logged.
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The friction caused by the gas bubble pushing up the pipe and displacing the drilling mud used to control the pressure could have created a static charge that ignited the gas into a fireball.
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Halliburton said that the report "accurately places responsibility on BP as the well owner for its operational decisions, " which included using a heavy fluid designed to keep gas from entering the well, called drilling mud, that was "too light" and probably mixed with the cement at the bottom of the well, and drilling too narrow a well.
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The council said two companies were applying to Mendip district council for permission to test drill for the gas, which is found in shale formed from deposits of mud, silt, clay and organic matter.
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Importantly, this mud also acts as a kind of plug in the hole, preventing any oil and gas from blasting up out of the hole.
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