Gas hydrate has attracted great interest from the scientists for the impact of its fossil fuel resource potential, the extent of submarine geohazard and global climate change. Thickness of a hydrate-bearing layer is an important parameter in resource evaluation. Quantitative identification of potential gas hydrate accumulation needs to pay urgent attention to the technology in pre-drilling assessment. Thickness of a hydrate occurrence can be identified by the time-frequency analysis method. The result suggests that the time-frequency analysis method, guiding by the logging data, may be an effective tool to identify thick hydrate-bearing layers. A hydrate-bearing layer tends to appear as a low-frequency low intensity zone, underlying a low-frequency high intensity and high-frequency low intensity zone.
SUN Yun-bao
,
ZHAO Tie-hu
,
QIN Ke
,
FENG Jing
. Time-frequency-based thickness estimation of hydrate-bearing layer in the Shenhu area of the South China Sea[J]. Journal of Tropical Oceanography, 2015
, 34(3)
: 54
-61
.
DOI: 10.11978/j.issn.1009-5470.2015.03.007
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