TREATMENT FLUIDS COMPRISING VITRIFIED SHALE AND METHODS OF USING SUCH FLUIDS IN SUBTERRANEAN FORMATIONS.

摘要

Methods and compositions for the treatment of subterranean formations, and more specifically, treatment fluids containing vitrified shale and methods of using these treatment fluids in subterranean formations, are provided. A method of displacing a fluid in a wellbore comprises providing a wellbore having a first fluid disposed therein; and placing a second fluid into the wellbore to at least partially displace the first fluid therefrom; wherein the second fluid comprises a base liquid; vitrified shale; a clay weighting agent present in the range of about 5% to about 20% by weight of the second fluid; and a viscosiiying agent present in the range of about 1% to about 10% by weight of the second fluid.