Fluid invasion-induced geological risks during drilling in marine natural gas hydrate reservoirs: A mini review
Lin Dong , Yan-long Li , Neng-you Wu
China Geology ›› 2026, Vol. 9 ›› Issue (3) : 652 -658.
Geological risks are the main obstacles encountered during drilling in marine natural gas hydrate reservoirs. This review aims to provide a primary insight into the geological risks in the process of drilling in marine hydrate reservoirs. Different geological risks and their characteristics will be analyzed, together with a discussion of possible influencing factors. Geological risks occurring in the marine natural gas drilling process have a close association with uncontrollable drilling fluid invasion and hydrate dissociation. Finally, the mechanisms of drilling risks and control strategies for safe drilling are highlighted. Results can give a reference to drilling risk prediction and control for drilling in marine natural gas hydrate reservoirs efficiently.
Natural gas hydrate / Geological risk / Drilling fluid invasion / Hydrate dissociation / Risk control / Invasion mechanism / Influencing factor / Drilling process
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