Occurrence and fate of methane leakage from cut and buried abandoned gas wells in the Netherlands
Methane leakage caused by well integrity failure was assessed at 28 abandoned gas wells and 1 oil well in the Netherlands, which have been plugged, cut and buried to below the ground surface (≥3 mbgl). At each location, methane concentrations were thoroughly scanned at the surface. A static chamber setup was used to measure methane flow rates from the surface as well as from 1 m deep holes drilled using a hand auger. An anomalously high flow rate from 1 m depth combined with isotopic confirmation of a thermogenic origin revealed ongoing leakage at 1 of the 29 wells (3.4%), that had gone undete... Mehr ...
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Dokumenttyp: | Artikel |
Erscheinungsdatum: | 2019 |
Schlagwörter: | Abandoned wells / Gas migration / Methane isotopes / Methane leakage / Static chamber measurements / Well integrity / drill / methane / oil / air pollution / article / concentration (parameter) / experimental study / flow rate / gas / gas field / Netherlands / oil field / priority journal / thermogenesis |
Sprache: | Englisch |
Permalink: | https://search.fid-benelux.de/Record/base-28789441 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://dspace.library.uu.nl/handle/1874/377901 |