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China Successfully Mines Gas From Methane Hydrate In Production Run (oilprice.com)

hackingbear writes from a report via OilPrice.com: In a world's first, China has successfully extracted gas from gas hydrates in production run in the northern part of the South China Sea. According to the U.S. Department of Energy (DOE), global estimates vary, but the energy content of methane in hydrates, also known as "fire ice" or "flammable ice," is "immense, possibly exceeding the combined energy content of all other known fossil fuels." But no methane production other than small-scale field experiments has been documented so far. The China Geographical Survey said that it managed to collect samples from the Shenhu area in the South China Sea in a test that started last Wednesday. Every day some 16,000 cubic meters (565,000 cubic feet) of gas, almost all of which was methane, were extracted from the test field, exceeding goals for production mining. This is expected to help cut down China's coal-induced pollution greatly and reduce reliance on politically sensitive petroleum imports controlled by the US. "The production of gas hydrate will play a significant role in upgrading China's energy mixture and securing its energy security," Minister of Land and Resources Jiang Daming said on Thursday.

25 of 132 comments (clear)

  1. Great.. Methane.. by erlando · · Score: 3, Insightful

    What does it matter to cut down on carbon emissions if all you are doing is replacing them with methane?

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    1. Re:Great.. Methane.. by volodymyrbiryuk · · Score: 5, Informative

      The CO2 emission per KW produced by burning coal is nearly twice as high as from methane. Not a final solution but still better than coal.

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    2. Re:Great.. Methane.. by blackpaw · · Score: 4, Insightful

      Natural gas hydrate consists of methane locked in water crystals that also are called flammable ice. It is an enormous untapped energy source formed under high pressure and low temperatures in permafrost or under the sea. It is regarded as a clean energy option with high energy density and huge amounts of reserves. It releases less than half the amount of carbon dioxide when burned as do oil and coal, ministry officials said.

      It releases a lot less carbon than their existing coal fired plants and shit load less particulates, so a big improvement in that regard.

      I guess the danger is that it could slow their move to renewables.

    3. Re:Great.. Methane.. by JaredOfEuropa · · Score: 4, Interesting

      IIRC methane is a seriously nasty greenhouse gas. What are the effects of mining, treating and burning this gas? Negative because of extra nasty emissions, or positive because harvesting it this way means the methane as such never makes it into the atmosphere (which was / is a big worry for instance when this ice melts and the methane is released)

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    4. Re:Great.. Methane.. by ebrandsberg · · Score: 4, Insightful

      IANAS (I am not a scientist but) Methane Hydrate is rather unstable, and tends to off-gas when water warms. By harvesting the more easily accessible hydrate for the methane, it may help reduce the methane impact on global warming, as methane is a far more potent greenhouse gas than CO2 is.

    5. Re:Great.. Methane.. by Zocalo · · Score: 5, Insightful

      From what I've read on the Methane (CH4) vs. CO2, it's not at all clear cut. CH4 is indeed a far worse greenhouse gas than CO2 - figures of 20-30x the heat trapping potential are often mentioned - but lingers in the atmosphere for a much shorter span of time than CO2 as natural processes tend to remove it within a decade or so. An additional problem is that those natural processes might be in the process of being overwhelmed by the sheer amount of CH4 being introduced into the atmosphere, both from natural sources (about a third of the total) and human sources like transportation and intensive livestock farming.

      Getting back to the question at hand, whether it's better for the environment to burn the CH4 vs. something else, you'd need to take into account exactly what is getting released into the atmosphere for a given amount of energy output. There are already technologies in place to limit CO2 emissions from coal-fired power plants, so if it's possible to do something similar for burning CH4, then there's no reason why it wouldn't be a much cleaner source of power than coal, GWh for GWh.

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    6. Re:Great.. Methane.. by Big+Hairy+Ian · · Score: 2

      I guess the danger is that it could slow their move to renewables.

      Also how much ecological damage does it's mining/extraction/refining do

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    7. Re:Great.. Methane.. by jabuzz · · Score: 2

      No it's not, it all depends on how long it persists in the atmosphere.

      If methane has a half life of say one week, then it really does not matter that it is 20x worse than CO2 because it's not around long enough to matter.

    8. Re:Great.. Methane.. by rmdingler · · Score: 4, Interesting

      There's such an enormous amount of methane that this won't allay those concerns. If it's going to happen it will still happen even if we're burning it 100% in place of coal.

      There is such an enormous amount of methane (natural gas) being mined already, so much so that the price of natural gas makes flaring it off cheaper than piping it to market in many locations.

      This will help nations like China and Japan who are without ample petroleum natural resources, but the value of liquid crude and condensates will be largely unaffected unless global population trends tail off.

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    9. Re:Great.. Methane.. by erlando · · Score: 2

      I bet you've never once ridden a bicycle to work, have you?

      Oh, but I'm not an american. I regularly bike to work.

      --
      Remember, there are no stupid questions. But there are a lot of inquisitive idiots.
    10. Re:Great.. Methane.. by GLMDesigns · · Score: 3, Insightful

      Guess now you know why the Kyoto and Paris Treaties are foolish and don't accomplish what environmentalists say they will. Why - because they exclude India and China.

      Not saying we ought not continue full speed ahead with carbon free alternatives - only say that the Treaties are worthless regarding the global environmental picture.

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    11. Re:Great.. Methane.. by ananamouse · · Score: 3, Informative

      They are not "mining the sea" in the way that brings up images of strip mining or even underground mining. They are drilling a regular normal oil well and performing the completion in the strata that contains a significant amount of hydrate in the pore network. Then they lower the pressure in the wellbore which lowers the pressure in the strata and then the hydrate disassociates into methane and water. The methane tries to come up the pipe. The water commits all sorts of passive aggression that water does in oil wells to make life mizerable for the schlub engineer.

    12. Re:Great.. Methane.. by Anonymous Coward · · Score: 3, Insightful

      Which is precisely why we might have to start collecting it from the ocean floor (at least in some areas). With global sea temperatures on the rise there have already been concerns raised that it might start releasing on its own, exacerbating climate change. Its not a good situation either way, but given the choice of mining the crap permanently locked up in the crust (oil/coal) or mining the stuff that is on the verge of gurgling its way into our atmosphere anyways I think the choice is obvious.

    13. Re:Great.. Methane.. by hamburger+lady · · Score: 2

      From what I've read on the Methane (CH4) vs. CO2, it's not at all clear cut. CH4 is indeed a far worse greenhouse gas than CO2 - figures of 20-30x the heat trapping potential are often mentioned - but lingers in the atmosphere for a much shorter span of time than CO2 as natural processes tend to remove it within a decade or so.

      depends on where in the atmosphere, unfortunately. the chemical process by which the atmosphere oxidizes methane into CO2 is based on hydroxyl radicals created in the upper atmosphere when UV light strikes water vapor. unfortunately, this process means hydroxyl is concentrated around the equator where there's lots of light and water.

      methane in places like the arctic is likely to stick around a while longer, as hydroxyl levels are much lower there. this is assuming methane isn't super well-mixed, and it doesn't seem to be.

      so the simple 'methane has a lifetime of X' stuff isn't so simple.

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    14. Re:Great.. Methane.. by Hognoxious · · Score: 2

      Methane tends to stay close to the ground.

      Why would it do that when it's considerably less dense than air?

      --
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  2. Current state of affairs in the USA worries me... by bogaboga · · Score: 4, Insightful

    I am beginning to get concerned that a sizable number of innovations are coming from the "East." Not much from the "West" these days. I am afraid that we may become inconsequential in the next few decades.

    Think...

    High speed trains; latest mobile technologies; the public transit system in New York is [several] decades behind that in Shanghai; the Chinese recently flew their own manufactured passenger plane and have the AG600 - the world's largest amphibious aircraft.

    But I am sure we can catch up if we dedicate resources appropriately.

  3. Right. Next you'll be telling me... by Anonymous Coward · · Score: 3, Interesting

    they're mining Manganese Nodules from the sea floor like we did (https://en.wikipedia.org/wiki/GSF_Explorer). There's more going on here folks.

  4. Re:Current state of affairs in the USA worries me. by Applehu+Akbar · · Score: 2

    Because we don't do science anymore, and technology only after every imaginable pressure group has been satisfied. The California high speed rail uses tech that is off-the-shelf in Europe and Asia.

  5. Re:Current state of affairs in the USA worries me. by DigiShaman · · Score: 4, Insightful

    Last I checked, the Shanghai Maglev was German technology. But other than that, yes, anytime you empower a nation to build because they're the lowest cost supplier that can actually do the job in numbers, you will get an economic boom there. Eventually they become self-sufficient where they too start competing in high tech industries with the rest of the developed world. So the transition from a developing nation to one that is developed is a natural progression. It happened with the Roman Empire, spanning to Europe, across the Atlantic to the America, now back to China, and soon Africa. Now, it's important to note that having a functional government is key here. Pure anarchy and pure totalitarianism are far too extreme to be conducive to mass economic output.

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  6. Re:The ice age had 12 times more CO2, fucking idio by GameboyRMH · · Score: 2, Informative

    Why the above is a bunch of bullshit:

    https://www.skepticalscience.c...

    https://skepticalscience.com/c...

    The greenhouse effect is a real thing. Deal with it.

    --
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  7. When the world had more CO2, it was warmer. by XXongo · · Score: 5, Informative

    Since you are cut-and-paste reposting what you already posted, I will cut-and-post what I already replied:

    The difficulty here is that you are mixing up stuff that's correct, and stuff that isn't.

    For the longest time earth was flooded with CO2 18 times higher than we have today,

    That part is true. The Earth has had more carbon dioxide in the past,

    and it was colder.

    This part is not true. In general, when there's more carbon dioxide it's warmer, and when there's less it's colder.

    We had more CO2 in THE FUCKING ICE AGE.

    First, to be pedantic, let me remind you that we are in an ice age right now: there are permanent ice caps on the planet that don't disappear in the summers. The detailed place we are in the cycle is that we are in an "interglacial" period, but overall, yes, we're still in an ice age.

    It's quite well accepted that the glaciation cycle is driven by Milankovitch variations, the pattern of solar insolation (short for "incident solar radiation," by the way) across the northern and southern hemisphere. Carbon dioxide and water vapor, however-- the greenhouse gasses in the atmosphere-- are the amplifiers that turn the relatively small insolation changes into global temperature changes.

    As the cycle of increase of glacial and interglacial periods go, the record is very clear: glacier advance correlate with reduced carbon dioxide, and glacier retreat trends with increased carbon dioxide. So, no, your statement is backwards-- if by "in the fucking ice age" you mean "during the ice covered periods of the current cycle", then, no, we had less CO2 in the atmosphere in the fucking ice age.

    The graph you link, with a minimum increment on the time axis of 100 million years, doesn't show the ice age cycle (with time periods three orders of magnitude shorter than that). Here's a graph of temperature and carbon dioxide over the last four glaciation cycles:
    http://earthguide.ucsd.edu/virtualmuseum/images/VostokIceCore.html">http://earthguide.ucsd.edu/virtualmuseum/images/VostokIceCore.html

    The rest of your post seems to have equivalent random mixing up of facts. You write:

    I don't know why you idiots just don't do your own research but keep repeating nonsense just because someone else said so.

    But that seems to be exactly what you are doing-- posting a scrapbook of random unrelated stuff without, as far as I can tell, making any attempt to understand it. Here are some links:

    https://www.scientificamerican.com/article/what-thawed-the-last-ice-age/
    http://earthguide.ucsd.edu/virtualmuseum/climatechange2/07_2.shtml

  8. children, please. by mtmiller100 · · Score: 2

    It never fails. I read an interesting article, then scan the comments for some insight from people who know far more than I do about the subject, and it doesn't take long for all of it to devolve into heated name-calling, because a bunch of grown children can't disagree politely.

  9. Re:About that whole limited supply of fossil fuels by Waffle+Iron · · Score: 3, Informative

    We're already well past the point where the planet can safely absorb the byproducts of fossil fuel burning. So the Malthusian issues are just as severe as people have been saying all along.

  10. Re:About that whole limited supply of fossil fuels by Crashmarik · · Score: 2

    Yeah, I mean really who wants to live on a greener more fertile planet

    https://www.nasa.gov/feature/g...

  11. Re: About that whole limited supply of fossil fuel by AxeTheMax · · Score: 2

    .......... The fact is, there's enough carbon dioxide and methane in the atmosphere to make it opaque in the wavelengths that those gases absorb. ........

    You are quite right. Well done!!!

    You have just told us in effect that the greenhouse effect caused by these gases is real. Though I suspect you didn't understand the science you just quoted. When you have worked out just what wavelengths these gases are transparent to and what wavelengths they are opaque to, and which direction the energy at these various wavelengths are going, and the consequences of this, and all the other boring actual science, please come back and explain to the other deniers in a bit more detail.