THE APPLICATION OF MONTE CARLO(MC)METHOD TO THE ESTIMATION OF GAS HYDRATE RESOURCES
-
摘要: 天然气水合物甲烷资源量的估算是天然气水合物研究中的热点问题。运用体积法计算含水合物沉积物中的甲烷资源量时,存在参数赋值不确定的问题,从而影响了计算结果的可信度。采用蒙特卡罗法,通过计算样本的频率可以较好地评价和描述计算结果的信度,弥补体积法的不足。对采用蒙特卡罗法估算甲烷资源量的原理进行了分析和探讨,并以麦肯齐三角洲和南海海域水合物为例,计算了水合物赋存区的甲烷资源量。Abstract: Gas hydrate is an important potential resource in the 21st century.The hot spot in the researches of gas hydrate is to estimate methane resources in gas hydrate. Reliability of the calculating result could be reduced because of the uncertainty of calculating parameters when volume method is used to do the calculation,but the reliability of calculating result could be evaluated and described well and truly by calculating the frequency of samples using Monte Carlo(MC) method. After discussing the limitation of the volume method for the estimation of the methane resource in detail, the principle of the MC method for the estimation of the methane resource is researched and analyzed thoroughly, and the methane resource of gas hydrate area in Mackenzie delta is calculated as an example.
-
Key words:
- gas hydrate /
- Monte Carlo(MC) method /
- methane resource
-
[1] Kvenvolden K A. A review of geochemistry of methane in nature gas hydrate[J]. Organic Geochemistry, 1995, 23(11/12):997-1008.
[2] Kvenvolden K A, Lorenson T D. The global occurrence of natural gas hydrate[C]//Natural Gas Hydrates:Occurrence, Distribution, and Dynamics, AGU Monograph Series. Washington:American Geophysical Union, 2001, 124:3-18.
[3] Milkov A V, Sassen R. Economic geology of offshore gas hydrate accumulations and provinces[J]. Mar. Petrol. Geol., 2002, 19:1-11.
[4] Allen M P, Tildesley D J. Computer Simulation of Liquids[M]. Oxford:Oxford University Press, 1987.
[5] Press F. Earth models obtained by Monte-Carlo inversion[J]. J. Geophys. Res., 1968, 73:5223-5234.
[6] Mikio Satoh. Estimation of amount of methane and resources of natural gas hydrates in the world and around Japan[J]. Jour. Geol. Soc. Japan, 1996, 102(11):959-971.
[7] Paull C K, Buelow W J, Ussler W Ⅲ, et al.Increased continental-margin slumping frequency during sea-level lowstands above gas hydrate-bearing sediments[J]. Geology (Boulder), 1996, 24:143-146.
[8] Matsumoto R. Methane hydrate estimates from the chloride and oxygen anomalies:Examples from the Blake Ridge and Nankai Trough Sediments. Methane Hydrates:Resources in the Near Future[M]. JNOC-TRC,1998:49-53.
[9] Collett T S, Kvenvolden K A, Magoon L B. Characterization of hydrocarbon gas within the stratigraphic interval of gas-hydrate stability on the North Slope of Alaska, USA[J]. Applied Geochemistry, 1990, 5:279-287.
[10] Lee M W, Hutchinson D R, Agena W F, et al. Seismic character of gas hydrates on the Southeastern US continental margin[J]. Marine Geophys. Res., 1994, 16:163-184.
[11] Dickens G R. Direct measurement of in situ methane hydrate quantities in a large gas hydrate reservoir[J].Nature,1997,385(30):426-428.
[12] Holbrook W S, Hoskins H, Wood W T,et al. Methane hydrate and free gas on the Blake Ridge from vertical seismic profiling[J]. Science, 1996,273:1840-1843.
[13] Yuan T, Spence G D, Hyndmen R D, et al. Seismic velocity studies of a gas hydrate bottom-simulating reflector on the northern Cascadia continental margin:amplitude modeling and full waveform inversion[J]. J. Geophys. Res., 1999, 104:1179-1191.
[14] Collett T S. Energy resource potential of natural gas hydrates[J]. AAPG Bulletin, 2002, 86(11):1971-1992.
[15] 姚伯初.南海的天然气水合物矿藏[J].热带海洋学报,2001(2):24-26.[YAO Bo-chu.The gas hydrate in the South China Sea[J].Journal of Tropical Oceanography,2001
(2):24-26.]
-
计量
- 文章访问数: 995
- PDF下载数: 2
下载: