Lost circulation material formulation and method of use

Details Lost circulation material formulation and method of use Lost circulation material formulation and method of use

C - Chemistry, Metallurgy

09

K

C09K 8/035 (2006.01) C09K 8/516 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2713715

A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging small fissures and large fractures and has utility over a wide range of temperatures, including high temperatures. The material has an optimized bimodal particle distribution and optionally has a polymer flocculant or water swellable polymer.

L'invention concerne un matériau colmatant, et son procédé d'utilisation, utilisable dans le traitement des puits pour colmater ou obturer efficacement de petites fissures et de grandes fractures, et utile dans une large plage de températures, y compris à des températures élevées. Le matériau comporte une répartition de particules bimodale optimisée et peut facultativement inclure un floculant polymère ou un polymère capable de gonfler dans l'eau.

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