METHODS AND SYSTEMS FOR QUANTIFYING A CLATHRATE DEPOSIT
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United States of America Patent
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Jan 25, 2018
app pub date -
Jul 25, 2016
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Jul 25, 2016
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Abstract
Various embodiments of quantifying a clathrate deposit in a subsurface from seismic data are provided. In one embodiment, the method includes using a computing system in: determining a maximum and a minimum value of a pull-up, where the pull-up is from a digital image; estimating a sound-wave speed of a clathrate deposit causing the pull-up and a sound-wave speed of a background deposit, where the clathrate deposit and the background deposit are different; calculating a gross clathrate thickness using the maximum value of the pull-up, the minimum value of the pull-up, the sound-wave speed of the clathrate deposit, and the sound-wave speed of the background deposit; using the sound-wave speed of the clathrate deposit to establish a relationship with clathrate concentration value; and determining a net clathrate thickness using a product of the gross clathrate thickness and the clathrate concentration value. Also provided are embodiments of producing hydrocarbons.
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