Invert silicate fluids for wellbore strengthening

Details Invert silicate fluids for wellbore strengthening Invert silicate fluids for wellbore strengthening

C - Chemistry, Metallurgy

09

K

C09K 8/502 (2006.01) C09K 8/36 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2708475

A wellbore fluid that includes an oleaginous continuous phase; a non- oleaginous discontinuous phase comprising a water-soluble silicate therein; and an emulsifier to stabilize the non- oleaginous phase dispersed in the oleaginous phase is disclosed. A setting agent, including organic or inorganic setting agent may optionally be included to trigger gelation or precipitation of the silicate downhole.

L'invention concerne un fluide pour puits de forage qui comporte une phase oléagineuse continue; une phase non oléagineuse discontinue à silicate hydrosoluble; et un émulsifiant pour stabiliser la phase non oléagineuse dispersée dans la phase oléagineuse. Un stabilisant, à agent stabilisant organique ou inorganique peut éventuellement être incorporé pour déclencher la gélification ou la précipitation du silicate dans le trou de forage.

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