INVERT SILICATE FLUIDS FOR WELLBORE STRENGTHENING.

摘要

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.