Methods of decomposing gas hydrates

Details Methods of decomposing gas hydrates Methods of decomposing gas hydrates

C - Chemistry, Metallurgy

07

C

C07C 7/20 (2006.01) C09K 8/52 (2006.01) C10L 3/06 (2006.01) E21B 36/00 (2006.01) E21B 43/24 (2006.01) E21B 43/25 (2006.01)

Patent

CA 2217380

The present invention provides methods of decomposing gas hydrates in subsea or subterranean wells, the equipment associated with the wells and in subterranean reservoirs containing gas hydrates. The methods basically comprise the steps of combining an acidic liquid with a basic liquid which chemically react exothermically to form a hot salt solution, contacting the gas hydrates with the hot salt solution to decompose at least a portion of the gas hydrates whereby natural gas and water are released therefrom and recovering the released natural gas, water and salt solution.

L'invention porte sur une méthode pour décomposer des hydrates de gaz dans des puits sous la mer ou sous terre, ainsi que sur le matériel connexe. La méthode comprend les étapes suivantes : combiner un liquide acide avec un liquide basique, qui réagissent chimiquement de façon exothermique pour former une solution de sel à température élevée; amener en contact les hydrates de gaz avec la solution saline chaude pour décomposer au moins une partie des hydrates de gaz, avec libération de gaz naturel et d'eau, et récupération de ce gaz ainsi que de la solution aqueuse saline.

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