Hiển thị các bài đăng có nhãn drill. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn drill. Hiển thị tất cả bài đăng

Thứ Tư, 1 tháng 5, 2013

Companies line up to drill after survey shows Dakota oil, gas fields far bigger than believed

Energy companies are lining up for their shot to drill in the Dakotas and Montana after a new government report revealed that a massive geological formation stretching across the states contains twice the oil and three times the amount of natural gas than was originally believed.

While the new estimate is drawing smaller companies to the game, the larger players like Schlumberger, Halliburton and Continental Resources are pushing forward with ambitious multi-year plans to stake their claim in the industry.

Continental recently announced a five-year plan to triple its production by 2017. The company’s growth is based on success in North Dakota and Montana as well as in parts of Oklahoma.

The dash to drill follows news from the government on how much more oil and natural gas there is to tap.

“These world-class formations contain even more energy resource potential than previously understood, which is important information as we continue to reduce our nation’s dependence on foreign sources of oil,” newly confirmed Interior Secretary Sally Jewell said Tuesday in a statement.

The new U.S. Geological Survey estimates there are 7.4 billion barrels of oil, 6.7 trillion cubic feet of natural gas and 0.53 billion barrels of natural gas liquids in the Bakken and Three Forks Formations in the Williston Basin Province of Montana, North Dakota and South Dakota.  

Since 2008, close to 450 million barrels of oil have been produced in the area and if the government estimates are correct, that leaves billions of barrels of oil and trillions more cubic feet of natural gas left for the taking.

That’s good news for North Dakota -- a state that’s already reaped big benefits from the oil boom and has one of the strongest state economies in the country coupled with an exceptionally low unemployment rate. Tax revenues from natural gas and oil hit $1 billion last year in North Dakota and the state is on track to double that number next year.  

Republican Sen. John Hoeven believes numbers from the new USGS survey will draw even more developers to the area.

“This will mean a lot of jobs,” he told FoxNews.com. “Financially we are already very strong, we have no debt, but this will mean a lot more. Stores, restaurants, movie theaters – we’ll have to build and we’ll have to hire workers.”

The competition to court employees is already on at the McDonalds in Dickinson, N.D. where prospective hires are being lured in with $300 signing bonuses, Hoeven said.

Calls to McDonalds Corp. for comment were not immediately returned.  

Some environmental experts like John Harju, associate director for research with the Energy and Environmental Research Center at the University of North Dakota, believe the possibilities are even greater than what the government forecasts.

“Like any of these USGS estimates, think of them as a milemarker that’s well behind you in the rearview mirror,” he told the Grand Forks Herald in North Dakota.

Still, not everyone is as gung-ho as Hoeven about drilling for natural gas, and the controversial process known as fracking used to access it.

The government hopes to calm some opposition to natural gas by releasing a set of draft rules to regulate hydraulic fracturing, or fracking. The process involves injecting a high-pressure mix of water, sand and chemicals deep into rock formations to release trapped oil and gas.

Supporters say the drilling method should continue and is credited for the country’s domestic energy boom. They say fracking gives the country a chance to cut its dependence on foreign oil.

Environmental groups have long objected to the practice and say it pollutes the groundwater and kills crops and livestock. They also argue that fracking releases heat-trapping methane gas into the air.

But in mid-April, the Environmental Protection Agency dramatically lowered its estimate of how much methane leaks during natural gas production. The agency said that tighter pollution controls put in place by the industry from 1990 to 2010 cut the country’s average of methane emissions by more than 850 million metric tons overall, or about 41.6 million metric tons annually. That’s a 20 percent decrease from previous EPA estimates – a decrease that took place as natural gas production in the country grew by nearly 40 percent in the past two decades.  

It is not clear exactly when the government will release its fracking regulations, but it is expected in the next few weeks.


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Thứ Năm, 21 tháng 2, 2013

Curiosity rover first robot to ever drill into Mars

NASA's Mars rover Curiosity has beamed home photos confirming that it recovered samples from deep within a Red Planet rock, cementing the robot's place in exploration history.

The Curiosity rover drilled 2.5 inches into a Martian outcrop on Feb. 8, and Wednesday mission scientists first set eyes on images showing drill tailings sitting in Curiosity's scoop, waiting to be transferred to analytical instruments on the robot's body.

The photos confirm that Curiosity has pulled off an historic achievement, scientists said.

"This is the first time any robot, fixed or mobile, has drilled into a rock to collect a sample on

"In fact, this is the first time any rover has drilled into a rock to collect a sample anywhere but on Earth," Jandura added. "In the five-decade history of the space age, this is indeed a rare event." [Curiosity's First Drilling on Mars (Photos)]

Breaking open a time capsule
Curiosity landed inside Mars' huge Gale Crater on the night of Aug. 5, kicking off a two-year prime mission to determine if the area has ever been capable of supporting microbial life.

Along with its 10 science instruments and 17 cameras, Curiosity's hammering drill is considered key to this quest, for it allows scientists to peer deep into Martian rocks for evidence of past habitability — something no other Red Planet robot has been able to do.

The arm-mounted drill "allows us to go beyond the surface layer of the rock, unlocking a kind of time capsule of evidence about the state of Mars going back three or four billion years," Jandura said.

The first drilling location is an intriguing time capsule indeed, scientists say. Curiosity bored into part of an outcrop called "John Klein," which is shot through with light-colored mineral veins and other evidence of long-ago exposure to liquid water.

"All of these features tell us that the rocks in this area have a really rich geological history, and they have the potential to give us information about multiple interactions between water and rock at this location," said JPL's Joel Hurowitz, sampling system scientist for Curiosity.

Mission scientists will learn more about that history when the drilled sample is transferred to two of Curiosity's key instruments, CheMin (short for Chemistry and Mineralogy) and SAM (Sample Analysis at Mars).

"That'll play out over the next few days here," said JPL's Daniel Limonadi, lead systems engineer for Curiosity's surface sampling and science system.

A few glitches
The recovered powder has already been used to clean out Curiosity's sample-handling system, to help ensure that the system is scrubbed free of potential contaminants from Earth. A minor software glitch has delayed the delivery of the sample to CheMin and SAM, but the team found a workaround, researchers said.

The Curiosity team has also become aware of another potential issue with the the sample-handling hardware. Engineers built two models of this hardware to run tests here on Earth, and the sieve — which screens out particles more than 0.006 inches (150 microns) wide — has begun to detach on one of them.

But this only happened after extensive use, and the sieve remained functional, rover team members said. And they stressed that there is no sign of any problem with the sample-handling gear Curiosity toted to Mars, though they'll take some measures to lessen the sieve's workload on the Red Planet (such as sieving samples for 20 minutes rather than 60 minutes, which Curiosity had done previously with soil samples).

"Based on the test results to date, and based on how we expect to use the hardware on Mars, we really have pretty good confidence that we're going to be able to use this hardware through the prime mission and beyond," Limonadi said.


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