By National Research Council, Division on Earth and Life Studies, Board on Earth Sciences and Resources, Committee on Earth Resources, Committee on Assessment of the Department of Energy's Methane Hydrate Research and Development Program: Evaluating Methane
Usual fuel, composed typically of methane, is the cleanest of the entire fossil fuels, emitting 25-50% much less carbon dioxide than both oil or coal for every unit of power produced. in recent times, ordinary fuel provided nearly 20-25% of all power ate up within the usa. Methane hydrate is a in all likelihood huge, immense and as but untapped resource of methane. the dept of Energy's Methane Hydrate examine and improvement application has been tasked due to the fact that 2000 to enforce and coordinate a countrywide methane hydrate examine attempt to stimulate the improvement of data and know-how precious for advertisement construction of methane from methane hydrate in a secure and environmentally dependable method. understanding the strength power of Methane Hydrate for the us evaluates the program's examine initiatives and administration methods on account that its congressional re-authorization in 2005, and provides strategies for its destiny study and improvement initiatives.--Publisher's description.
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Example text
This estimate allocates methane in methane hydrate resources to three widespread geologic formations on the North Slope. The assessment screens out occurrences less than 20 billion cubic feet (BCF) and does not consider methane hydrate deposits within icebonded permafrost. The USGS estimate of the technically recoverable methane resource endowment remains uncertain because long-term production has not been demonstrated. However, estimating the recoverability of this resource has been undertaken with the reasonable expectation that conventional oil and gas recovery methods can be employed for sand-dominated methane hydrate reservoirs.
S. The structure I hydrate unit cell (unit cell = smallest repeating unit of the hydrate crystal) contains 46 water molecules and is composed of two small water cages (512) and six large water cages (51262). The water cages can trap gas molecules (not shown). eps and Sloan (2008). bitmap, fixed image Because methane is trapped within the hydrate crystal structure, methane gas in hydrate is greatly compressed. This results in an “energy density” for methane hydrate up to 164 volumes of gas per volume of hydrate (at standard temperature and pressure, or STP) which can be substantially higher than the energy density for conventional gas reservoirs at the same depth.
These changes were implemented on DOE’s own initiative, on the basis of advice from the MHAC, and in response to recommendations in the previous NRC report. Operative visions and rationale for methane hydrate research in the nation and the role of the Program in coordinating this re26 Copyright © National Academy of Sciences. All rights reserved. S. , Boswell et al. [2006]; and MHAC [2007], which included the Interagency Five-Year Plan for Methane Hydrate Research and Development; see Chapter 4 for details).