Initial Assessment of Gas Hydrate in the UK North Atlantic Margin
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Date
2022-05
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The Ohio State University
Abstract
The purpose of this thesis is to provide an initial assessment of gas hydrate presence in the UK North Atlantic margin by examining petrophysical industry well logs. This was accomplished by combining datasets from the National Oceanic and Atmospheric Administration (NOAA) and the Oil and Gas Authorities' (OGA) National Data Repository (NDR). The NOAA dataset contained seafloor temperature measurements that were vital for pre-analysis calculations, while the NDR dataset was used to identify wells of interest. While dozens of wells were identified in the NDR as being potentially viable candidates for analysis, only thirteen were fully examined due to the scope of this thesis. Of these thirteen wells, eight were determined to have gas hydrate. Two wells displayed interesting resistivity measurements, but did so in segments where gas hydrate couldn't form due to the temperature profile of the well. The remaining wells displayed no signs of gas hydrate presence. The analysis presented in this thesis will contribute to a growing body of research trying to quantify the abundance of gas hydrates globally. With a more refined understanding of worldwide gas hydrate reserves, better predictions can be made regarding the potential of gas hydrate as both an energy source and a geohazard. Moreover, the interplay between gas hydrates and the carbon cycle becomes less opaque with more precise abundance estimates.
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gas hydrate, UK North Atlantic margin, well logging, NDR