Gas migration can be controlled with a cement system that includes latex, stabilizers and dispersants. These latex systems can reduce fluid loss, increase acid resistance, and improve high-temperature suspension properties. In general, latexes are colloidal in nature, with particles larger than a molecule, but smaller than grains of sand. These particles also have a very large surface area. As a result, the particles coagulate and deliver low permeability for a gas-tight cement sheath. Additionally, latexes enhance tensile and flexural strengths of the cement sheath.
A liquid additive designed to lower equivalent circulating density (ECD) and to impart excellent fluid-loss control, high-temperature suspension properties, and acid resistance to cement slurries.
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The Latex 2000 system is a polymer emulsion and in the presence of salts, particularly divalent ions such as\ncalcium, the latex tends to come out of emulsion, losing its effectiveness against gas migration in cement slurries. Stabilizer 434C latex stabilizer helps prevent the de-emulsification of Latex 2000 additive in cement slurries.","path":"/content/dam/ps/public/cem/contents/Chem_Compliance/web/H01341.pdf","docCreatedDate":"2008-06-23T23:30:00.000-05:00","modifiedDate":"2008-06-23T23:30:00.000-05:00","publishDate":"2018-10-02T11:33:17.962-05:00","docdate":"2008-06-23T23:30:00.000-05:00","docrefNum":"H01341","languageSet":["English"],"accessType":"P","dataSearch":"locations:Global,|prodgroups:Cementing:Materials_Chemicals_&_Additives:Latexes,"},{"title":"Stabilizer 434B Latex Stabilizer A-4 ","description":" Stabilizer 434B latex stabilizer helps prevent gas migration in Latex 2000 cement, a low fluid-loss cementing system. 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Halad-400L has been environmentally approved\nfor use in the North Sea (exhibits biodegradability, low toxicity,\nand low bioaccumulation potential). This additive works without building viscosity and has a slightly dispersive character, thus the cement slurry remains thin. This additive is available as an aqueous liquid with a 22% activity.","path":"/content/dam/ps/public/cem/contents/Data_Sheets/web/H/H06935-A4.pdf","docCreatedDate":"2009-07-17T23:30:00.000-05:00","modifiedDate":"2009-05-27T23:30:00.000-05:00","publishDate":"2018-10-02T11:31:35.084-05:00","docdate":"2009-07-17T23:30:00.000-05:00","docrefNum":"H06935-A4","languageSet":["English"],"accessType":"P","dataSearch":"locations:Global,|prodgroups:Cementing:Cementing_Chemistry:Fluid_Loss,Cementing:Cementing_Solutions:Gas_Migration,Cementing:Materials_Chemicals_&_Additives:Latexes,Cementing:Materials_Chemicals_&_Additives:Dispersants,Cementing:Cementing_Chemistry,"},{"title":"Halad-400L Fluid Loss Additive","description":"Halliburton\u2019s Halad®-400L fluid loss additive is a synthetic additive\ndeveloped for temperatures from below 80°-400°F (27°-204°C) and for salt concentrations from zero percent to saturated salt concentrations. Halad-400L has been environmentally approved\nfor use in the North Sea (exhibits biodegradability, low toxicity,\nand low bioaccumulation potential). This additive works without building viscosity and has a slightly dispersive character, thus the cement slurry remains thin. This additive is available as an aqueous liquid with a 22% activity.","path":"/content/dam/ps/public/cem/contents/Data_Sheets/web/H/H06935.pdf","docCreatedDate":"2009-07-17T23:30:00.000-05:00","modifiedDate":"2009-05-27T23:30:00.000-05:00","publishDate":"2018-10-02T11:31:34.297-05:00","docdate":"2009-07-17T23:30:00.000-05:00","docrefNum":"H06935","languageSet":["English"],"accessType":"P","dataSearch":"locations:Global,|prodgroups:Cementing:Cementing_Chemistry:Fluid_Loss,Cementing:Cementing_Solutions:Gas_Migration,Cementing:Materials_Chemicals_&_Additives:Latexes,Cementing:Materials_Chemicals_&_Additives:Dispersants,Cementing:Cementing_Chemistry,"}]},{"contenttype":"Safety and Compliance","datasource":[{"title":"Stabilizer 434B Latex Stabilizer","description":" Stabilizer 434B latex stabilizer helps prevent gas migration in Latex 2000 cement, a low fluid-loss cementing system. 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