Loss circulation compositions (LCM) having portland cement clinker
AssigneeSaudi Arabian Oil Company
InventorB. Raghava Reddy
Life of this patent
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Abstract
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.
Claims46
A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
- introducing a lost circulation material (LCM) into the wellbore such that the LCM contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone as compared to a period before introducing the LCM, wherein the LCM comprises:
- Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
- a carrier fluid;
- and
- a plurality of polymer fibers.
A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
- introducing a lost circulation material (LCM) into the wellbore such that the LCM contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone as compared to a period before introducing the LCM, wherein the LCM comprises:
- Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
- a carrier fluid;
- and
- a plurality of particulate glass having an aspect ratio of greater than 1 or less than 1.
A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
- introducing a lost circulation material (LCM) into the wellbore such that the LCM contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone as compared to a period before introducing the LCM, wherein the LCM comprises:
- Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
- and
- a carrier fluid.
A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
- introducing a lost circulation material (LCM) into the wellbore such that the LCM contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone as compared to a period before introducing the LCM, wherein the LCM comprises:
- Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
- cement;
- and
- a carrier fluid.
Dependencies are inferred from the claim text.