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"name": "Gas hydrate quantification in Walker Ridge block 313, Gulf of Mexico, from full-waveform inversion of ocean-bottom seismic data",
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"url": "https://pubs.usgs.gov/publication/70249387"
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"value": "10.1190/INT-2018-0165.1",
"url": "https://doi.org/10.1190/INT-2018-0165.1"
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"@type": "Periodical",
"name": "Interpretation",
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"issueNumber": "1"
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"datePublished": "2020",
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"abstract": "The Gulf of Mexico (GOM) Joint Industry Project Leg 2 logging-while-drilling data in Walker Ridge lease block 313 (WR313) in the GOM detected gas hydrate in coarse- and fine-grained sediments at sites WR313-G and WR313-H. The coarse-grained units are thin (\u2060<10\u2009\u2009m\u2060) and highly saturated, whereas the fine-grained unit is thick (approximately 200\u00a0m) with low saturation and fracture-filling gas hydrate. Unlike its coarse-grained counterpart, the seismic character of the fine-grained unit does not clearly indicate the presence of gas hydrate, which would likely have remained undiscovered in the absence of drilling. In this paper, through frequency-domain acoustic full-waveform inversion (FWI) of ocean-bottom seismometer data along a 2D multichannel seismic transect near sites WR313-G and WR313-H, we detect and quantify gas hydrate in the fine-grained unit. Key results are as follows: First, the base of the gas hydrate stability zone, which is not obvious in the reflection profile, can be discerned in the FWI results. Second, the gas hydrate in the fine-grained unit is mainly confined to the area between two sets of opposite-dipping normal faults implying that the fault architecture may be partially responsible for this gas hydrate accumulation and distribution.",
"description": "16 p.",
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"name": "Society of Exploration Geophysicists"
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"name": "Wang, Jiliang",
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"name": "Chinese Academy of Sciences"
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"name": "Oklahoma State Univ"
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