| abstract |
The invention relates to Portland cement clinker LCMs comprising Portland cement clinker to mitigate or prevent the loss of circulation in a well. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may comprise Portland cement clinker and a crosslinked fluid, such as a calcium ion crosslinked polyuronide or a divinyl sulfone crosslinked polysaccharide. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. The invention also relates to methods of limiting the loss of circulation using Portland cement clinker LCM. |