Understanding methane seepage risks in decommissioned offshore wells

IOGP Report 811

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SKU: 811 Category:

Description

This Report examines concerns around methane seepage from decommissioned offshore wells, particularly in the North Sea, and evaluates claims that such wells are major contributors to greenhouse gas emissions. It provides a critical review of recent studies, highlighting methodological flaws and overestimations, and compares seepage volumes from wells with biogenic methane emissions globally. This Report emphasizes that natural seepage is a widespread phenomenon, often unrelated to human activity, and that emissions from wells are comparatively minor. This Report outlines how industry practices, such as well integrity management and independent verification, have significantly reduced seepage risks. Drawing on recent field studies and national initiatives, this Report presents a balanced, evidence-based perspective. It reinforces the importance of continued monitoring, transparent reporting, and adherence to robust decommissioning standards to ensure environmental protection and responsible offshore operations.

Additional information

Asset Group

Decommissioning

Asset Status

Active

Content Type

Publication

Document type

Report

External Library

ASTM

Language Code

en-US

Page Count

18

Publication Date

December 2025

Version

1.0