Gas Hydrate Formation Risk and Prevention for the Development Wells in the Lingshui Gas Field in South China Sea

Table 1

Cases of hydrate accidents during deep-water well testing.

Date	Region	Water depth (m)	Hydrate formation region	Location of hydrate blockage	Time spent in plug removal
1998	Shetlands	838.2	0-838.2	594.4-838.2	>7 h
2010	Mexico	1722.9	0-2144	850-2144	>11 d
2012	Campos Basin	2788	0-3000	1715-1798	>4 h