Two-component lost circulation pill for seepage to moderate loss control
AssigneeSaudi Arabian Oil Company
InventorsJothibasu Ramasamy, Md Amanullah
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Abstract
A two-component lost circulation material (LCM) is provided having a polymer component and a sodium hydroxide component. The polymer component may include a carrier fluid such as water, a particulate material such as fly ash, a fibrous material such as polypropylene fibers, and an acrylic polymer. The sodium hydroxide component may include water and sodium hydroxide. The sodium hydroxide component is introduced to contact the polymer component to form the two-component LCM. Methods of lost circulation control and manufacture of a two-component LCM are also provided.
Claims13
A method to control lost circulation in a lost circulation zone in a wellbore, comprising:
- introducing a first component into the wellbore such that the first component contacts the lost circulation zone, wherein the first component comprises:
- a carrier fluid;
- fly ash;
- polypropylene fibers;
- and
- an acrylic polymer solution comprising an acrylic polymer and water;
- introducing, after introducing the first component, a second component into the wellbore, such that the second component contacts first component in the lost circulation zone, wherein the second component comprises sodium hydroxide and water.
Dependencies are inferred from the claim text.