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The explosion and fireplace that destroyed the Deepwater Horizon drilling rig within the Gulf of Mexico in April 2010 killed 11 crew members and triggered an environmental nightmare. Before the properly was lastly capped in mid-July, virtually 5 million barrels of oil had been spilled into the Gulf, the National Oceanic and Atmospheric Administration reported, causing catastrophic harm for garden cutting tool marine and plant life. Federal investigators found that the disaster was the result of multiple errors made by oil firm BP, together with an improperly cemented seal on the effectively that allowed oil to leak, and the company's failure to perform up-to-par maintenance and safety checks and to adequately prepare the rig's crew, in response to Time. Within the aftermath of the incident, critics warned that drilling for oil more than a mile below water is inherently risky, since tools should withstand intense pressure, and the methods used to cap leaks at lesser depths might not work.
Nevertheless, six months after the accident, U.S. Secretary of the Interior Ken Salazar decided to allow deep-water drilling to resume, offering that operators comply with newly imposed, tighter security standards. One of the causes of the Deepwater Horizon catastrophe was the failure of cement sealing, which lined the hole bored in the Gulf flooring and held the pipe that goes down by the rig in place. New federal laws require that an engineer certify that the cementing can withstand the pressures to which it is going to be subjected. BP says that in the future, it won't take its construction contractors' phrase that its wells are strong enough to withstand the excessive pressures to which they're going to be subjected. Instead, the corporate will require laboratory testing of the cement used within the parts of wells that'll be beneath essentially the most stress. This testing can be carried out by both a BP engineer or an impartial inspector.
Some consultants suppose BP and other oil drillers ought to go even additional to strengthen wells. For example, oil business engineers told Technology Review that the design of the Deepwater Horizon's properly was fatally flawed due to BP's choice to put in a steady set of threaded casting pipes -- primarily, one long pipe -- from the wellhead all the way down to the bottom of the well. That technique seals off the house between the pipe casing and the bore hole drilled for the nicely, making it troublesome to detect leaks that develop throughout development, wood shears and allows fuel from the oil deposit extra time to construct up and percolate, raising the risk of an explosion. Instead, critics wish to see oil wells in-built items, with each section of pipe cemented in place earlier than the next one is put in. That sluggish, Wood Ranger Power Shears website cautious technique would allow builders to look ahead to leaks that might develop while the concrete is setting, and to fix them extra simply.
Unfortunately, it also would be expensive. The BOP's operate is to prevent fuel and oil from rushing too shortly up into the pipe contained in the rig, which may cause the form of explosion that destroyed the Deepwater Horizon. Imagine pinching a rubber hose along with your fingers to cease the move of water, and you've got the essential concept, besides that your hand would have to be more than 50 ft (15 meters) in size and weigh greater than 300 tons, in keeping with Newsweek. Instead of fingers, the BOP is equipped with a strong software called a shear ram, which cuts into the pipe to shut off the stream of oil and gasoline. Unfortunately, in the Deepwater Horizon catastrophe, the BOP failed to do its job. Federal regulators hope to forestall those issues the next time round by requiring higher documentation that BOPs are in working order, and better coaching for crew members who function them. As added insurance coverage, they now mandate that BOPs be geared up with more powerful Wood Ranger Power Shears website, capable of slicing through the outer pipe even when subjected to the best water pressure expected at that depth.
Additionally, BP says that every time one of its undersea BOPs is brought to the floor for testing and maintenance, it can bring in an impartial inspector to verify that the work is being performed correctly. Some oil trade engineers argue that new BOP measures should go additional. They'd wish to see rigs outfitted with a second backup BOP -- preferably one floating on the floor, somewhat than on the ocean floor, so it might be extra accessible to regular inspection and buy Wood Ranger Power Shears testing. In deepwater oil drilling, robots are the roughnecks who get essentially the most troublesome jobs performed. Oil firms have been using remotely operated automobiles (ROVs) -- mainly, robotic submarines that can descend to depths where no human diver may survive -- for more than 30 years, to do all the things from flip bolts to shut valves. Today's state-of-the-art ROV is a $1 million, box-shaped steel craft the scale of a small automobile, equipped with mechanical arms that can carry as much as a ton in weight.
Questo cancellerà lapagina "Are we Drilling for Oil in the U.S.?"
. Si prega di esserne certi.