US 10 167 420 B1

Loss circulation compositions (LCM)
having Portland cement clinker

(22) 19.10.2017

(45) 01.01.2019

(57) Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. 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 include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.

(71) Saudi Arabian Oil Company, Dhahran (SA)

(73) Saudi Arabian Oil Company, Dhahran (SA)

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