# US 2019/0375974 A1 · Two-component lost circulation pill for seepage to moderate loss control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0375974 A1 - Document ID: US20190375974A1 - Status: Published application - Kind: A1 - Application number: 16/549,630 - Filed: 2019-08-23 - Published: 2019-12-12 - Earliest claimed: 2016-07-06 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Jothibasu Ramasamy; Md Amanullah - Web page: https://patentgrep.com/patent/US20190375974A1 ## CPC - C09K 8/035: Organic additives - C09K 8/5045: {containing inorganic compounds} - C09K 8/508: macromolecular compounds {(C09K8/512 takes precedence)} - C09K 8/516: characterised by their form or by the form of their components, e.g. encapsulated material - E21B 21/003: {Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138)} - C09K 2208/08: Fiber-containing well treatment fluids - Y02W 30/91: Use of waste materials as fillers for mortars or concrete - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## 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. ## Claims ### Claim 1 A lost circulation material (LCM) composition, comprising: a first component comprising: a carrier fluid; fly ash; polypropylene fibers; and an acrylic polymer; and a second component comprising sodium hydroxide. ### Claim 2 (depends on 1) The LCM composition of claim 1, wherein the carrier fluid of the first component comprises water. ### Claim 3 (depends on 1) The LCM composition of claim 1, wherein the LCM composition consists of the first component and the second component. ### Claim 4 (depends on 1) The LCM composition of claim 1, wherein the first component consists of: the carrier fluid; fly ash; polypropylene fibers; and the acrylic polymer. ### Claim 5 (depends on 1) The LCM composition of claim 1, wherein the second component comprises water. ### Claim 6 (depends on 5) The LCM composition of claim 5, wherein the second component consists of sodium hydroxide and water. ### Claim 7 (depends on 5) The LCM composition of claim 5, wherein the second component comprises 25% by weight of the sodium hydroxide. ### Claim 8 (depends on 1) The LCM composition of claim 1, wherein the fly ash of the first component comprises an amount in the range of 200 grams to 400 grams. ### Claim 9 (depends on 1) The LCM composition of claim 1, wherein the polypropylene fibers of the first component comprises an amount in the range of 2 grams to 6 grams. ### Claim 10 (depends on 1) The LCM composition of claim 1, wherein the acrylic polymer comprises an acrylic polymer solution comprising water and at least 30% by weight acrylic polymer. ### Claim 11 (depends on 10) The LCM composition of claim 10, wherein the acrylic polymer solution of the first component comprises an amount in the range of 20 milliliters to 40 milliliters. ### Claim 12 (depends on 1) The LCM composition of claim 1, wherein the LCM has a gel stiffness modulus (GSM) of at least 15.881 pounds/millimeter (lb/mm). ### Claim 13 (depends on 1) The LCM composition of claim 1, wherein the LCM has a yield strength of at least 74 pounds-force (lbf). ### Claim 14 A method of forming a lost control material (LCM) composition, comprising: adding a carrier fluid to form a first mixture; adding a particulate material to the first mixture, the particulate material comprising fly ash; adding a fibrous material to the first mixture, the fibrous material comprising polypropylene fibers. adding an acrylic polymer solution to the first mixture; adding water to form a second mixture; and adding sodium hydroxide to the second mixture, wherein the LCM composition is formed by contacting the first mixture with the second mixture. ### Claim 15 (depends on 14) The method of claim 14, wherein the carrier fluid comprises water. ### Claim 16 (depends on 14) The method of claim 14, wherein the second component comprises 25% by weight of the sodium hydroxide. ### Claim 17 (depends on 14) The method of claim 14, wherein the LCM has a gel stiffness modulus (GSM) of at least 15.881 pounds-force/millimeter (lbf/mm). ### Claim 18 (depends on 14) The method of claim 14, wherein the LCM has a yield strength of at least 74 pounds-force (lbf). ### Claim 19 (depends on 14) The method of claim 14, wherein the fly ash comprises at least 55% by weight of the LCM composition. ### Claim 20 (depends on 14) The method of claim 14, wherein the polypropylene fibers comprise at least 0.7% by weight of the LCM composition. ### Claim 21 (depends on 14) The method of claim 14, wherein the acrylic polymer comprises an acrylic polymer solution comprising water and at least 30% by weight acrylic polymer. ### Claim 22 (depends on 21) The method of claim 21, wherein the acrylic polymer solution comprises at least 7.7% by weight of the LCM composition.