...An Assessment of Methane Hydrate Recovery and...
...Figures……………………………………………………………………………ix Introduction...................................................................................................................................7 Geology..........................................................................................................................................8 Methane Transport & Structure............................................................................................8...
...Hydrates.................................................................................................................11 Comparison of Methane Hydrate and Ethylene...
...Considerations...........................................................................................................20 Transportation.............................................................................................................................21 from Methane Hydrates..........................................................22 3 Natural...
...Energy Efficiency................................................................................................................43 of Methane Hydrates to Environment................43...
...........................................................................8 Table 2: Methane Estimates From Methane...
...Methane Estimates From Methane Hydrates ...................................9 Table...
...Sample compositions of methane hydrate core samples...............................................23...
...processing unit for methane hydrates to be...
...the Nankai Trough methane hydrates ..........................................44 Figure...
...Vast quantities of methane have been discovered...
...gas molecules, mostly methane, each surrounded by...
...like water ice. Methane hydrates are stable...
...conditions In a methane hydrate reservoir, free...
...maximum amount of methane gas that can...
...can occur in methane hydrate is fixed...
...formula of solid methane hydrate is assumed...
...the volume of methane hydrate will be...
...volume of gas methane. Laboratory experiments have...
...The characteristics of methane hydrate deposits are...
...significant source of methane hydrate lies eighty...
...(Figure 1) . Methane Transport & Structure...
...Transport & Structure Methane produced from underthrust...
...this transport of methane. Stratigraphic accumulations develop...
...is indicative of methane hydrates, beneath the...
...gas overlain by methane hydrates has been...
...estimation techniques for methane hydrates yield firmer...
...2) of hydrate-bound methane . Table 2:...
.... Table 2: Methane Estimates From Methane...
...Methane Estimates From Methane Hydrates . Region...
...Saturation mbsf Estimated methane x 108 m3...
...108 m3 Estimated methane x 108 m3...
...Stability & Transport Methane hydrates form within...
...The production of methane hydrate adds to...
...the formation of methane hydrate, only after...
...hydrate, only after methane requirements are fulfilled...
...demonstrate promise for methane accumulation and potential...
...recover gas from methane hydrates (Collett T.S....
...unit amount of methane, first temperature depression...
...a mole of methane from gas hydrates...
...Methanol Ethylene Glycol Methane Production Rate 3...
...% Comparison of Methane Hydrate and Ethylene...
...temperature of the methane hydrate in the...
...feasible to transport methane hydrates at reasonable...
...days showing that methane hydrates may be...
...shipping techniques with methane hydrates . At...
...determine if shipping methane hydrates is feasible....
...processing from the methane hydrate to Fischer-Tropsch...
...Natural Gas from Methane Hydrates In order...
...natural gas from methane hydrates, several assumptions...
...processing unit for methane hydrates to be...
...natural gas. When methane hydrates from the...
...gas from the methane hydrates will be...
...Sample compositions of methane hydrate core samples....
...and 892 ~90% methane, up to 10%HS,...
...some CO 1240 Methane, M sulfate, also...
...the case of methane hydrate use for...
...the system. Fortunately, methane from hydrates contains...
...Gas After the methane hydrate is removed...
...the case of methane hydrate extraction at...
...production from the methane hydrate site is...
...such as a methane hydrate, may be...
...rates of the methane hydrate site, rental...
...and LPG fuels. Methane can be converted...
...oxidation (4) of methane are described by...
...catalytic conversion of methane and steam to...
...to lower the methane conversion. Typically temperature...
...the reformer tubes. Steam-to-methane (H2O/CH4) ratio is...
...a burner with methane and oxygen, a...
...tubular reactors (steam methane reforming - SMR)....
...the following products: methane, alkanes and alkenes...
...longer used in methane based FT plants....
...significant amount of methane is produced. Low...
...small field of NG/methane hydrate such as...
...moisture associated with methane from the hydrate...
...The rate of methane production is an...
...= 1,330 bbl/d (methane input = 10...
...the oxidation of methane by water. The...
...For FT plant Methane Throughput, scfd 42,376,000...
...42,376,000 scfd of methane; produces 5830 bbl/d...
...complete decomposition of methane in the reformer...
...mixture (steam and methane) pressure from 1...
...content of input methane. Methane input to...
...of input methane. Methane input to the...
...one ft3 of methane releases 1,000Btu Based...
...42,376,054 ft3/day of methane produces 5830 bbl/d...
...Potential Effects of Methane Hydrates to Environment...
...The importance of methane hydrates in the...
...cycle is that methane hydrates are one...
...carbon. This makes methane hydrates a potential...
...year (Kvenvolden, 1988). Methane is another carbon...
...for the Earth. Methane may be short-lived...
...weight basis. Although methane is one the...
...huge amounts of methane from dissociated methane...
...methane from dissociated methane hydrate never reaches...
...to oxidation. Therefore, methane produced from methane...
...methane produced from methane hydrate may not...
...the other hand, methane hydrates could potentially...
...the release of methane to the oceans...
...large volumes of methane is a significant...
...be dissociated, as methane production from hydrates...
...substantial volume of methane has been documented...
...significant contribution from methane hydrates the production...
...large volumes of methane to the Earth's...
...catastrophic release of methane hydrates at a...
...of the hydrated methane to the atmosphere....
...reserve estimates of methane hydrates, a catastrophic...
...the total annual methane emissions (Figure 22)....
...such severe local methane concentrations would of...
...mobile1.00% Figure 22: Methane emission sources with...
...the Nankai Trough methane hydrates Economic Evaluation...
...selected to convert methane hydrate to a...
...gas production from methane hydrates the cost...
...gas from offshore methane hydrates and available...
...dissociates the overlying methane hydrates. An economic...
...cost of producing methane from the Oregon...
...selling price of methane = $ 5.36...
...cost of producing methane from the Oregon...
...5* 10 scm methane = 2332000 bbl...
...optimal recovery of methane hydrates yields an...
...as conduits for methane, producing structural accumulations....
...generally have high methane saturations since overburden...
...gas porduction from methane hydrate dissociation." J....
...low pressures of methane hydrates with various...
...(1987). "Kinetics of methane hydrate decomposition." Chem....
...the Geochemistry of Methane in natural Gas...
...K. A. (1988) ‘Methane Hydrate-A Major Reservoir...
...the Uptake of Methane by Methane Hydrates...
...of Methane by Methane Hydrates ’ Fluid...
...Kvenvolden, K.A. (1988), “Methane Hydrate-A Major Reservoir...
...the Exploitation of Methane Hydrate Deposits eum...

...be butane. The methane branch is attached...
...propane. The two methane branch- es are...
...root and one methane group. Since the...
...possible numbers). The methane is at C5....
...a hexane. Two methane groups are attached...
...There are 3 methane parts, so in...
...to left. The methane groups are thus...
...there is one methane on each; these...
...There are 2 methane branches at the...
...branches, respectively. A methane branch is attached...
...branch and a methane branch attached to...
...1-ethyl branch. The methane group is clockwise...
...a clockwise direction. Methane is thus the...
...cyclohexane. There are methane branches attached consecutively...
...bon atoms with methane attached, but which...
...is only one methane branch so this...
...branch and a methane branch is attached...
...is closer to methane as C2 since...
...C1 to the methane branch at C4,...
...we ?nd a methane at C3 and...
...There is a methane branch and a...
...alphabetical default, the methane branch will be...

...rich in nitrogen, methane, and other hydrocarbons...
...rich in nitrogen, methane, and other hydrocarbons....
...Sunlight interacting with methane has produced more...
...are rich in methane, which absorbs red...
...by ammonia- and methane-laden water. The greater...