Product Description

(1) Properties: * copolymer of cationic monomer& acrylamide * For carbonate reservoir( Acid/rock reaction) * Viscosifying effectively to 20%HCL & 25%HCL. * Good temperature & shear resistance, can be used in acid system of 180? reservoir. (2) Characteristics: --Good rheological & thermal stability A: 0.8%DC-4099+20%HCL gel system is for 140-160?reservoir. Viscosity can reach to 40-60mPa.s under 25?/170 s-1condition, 30-35mPa.s under 90?/170 s-1,and 20-30mPa.s under 120?/170 s-1 condition.(as per chart 1) B: 1.0%DC-4099+20%HCL gel system is for 160-180?reservoir. Viscosity can reach to 50-70mPa.s under 25?/170 s-1condition, 45-50 mPa.s under 120?/170 s-1,and 20-30mPa.s under 160?/170 s-1 condition.(as per chart 2) Chart 1:0.8%DC-4099+20%HCL gel rheological graph       - - - - TEMP.? | - - - -   - - - -   | 22 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | Viscosity mPa.s | 45.2 | 41.7 | 37.3 | 36.1 | 33.9 | 31.8 | 31.1 | 30.1 | 28.7 | 28.1 | 27.0 | 26.2 | 25.9 | - - - -       CHART 2: 1.0%DC-4099+20%HCL gel temp.-viscosity graph         --Good retarding performance Test showed that the retarding rate of 0.8% DC-4099+20%HCL high-temp. gel is more than 90% compared with white acid --Excellent fluid loss reducing property DC-4099 high temperature gel is of perfect rheological function, effectively reduces the formation of fluid loss. -- Superior performance and compatibility It can mix with inhibitor, demulsifier, iron ion stabilizer, anti-swelling agent, soluble to water or acid. (3) DC-4099 SPECIFICATIONS:   - - - - Items |  Spec. | Appearance | White powder | Solid content, % | =90% | Mesh | =30 | Solubility | Dispersed and dissolved in water and acid | Retarding rate | >90% | Tackifying property | 0.8% DC-4099+20%HCL, =40mPa.s under room temp./170s-1conditionand 20-30mPa.s in120?; 1.0%FRK-V180+20%HCL, 20-25mPa.sunder 60/170s-1condition. | Reducing frictional resistance | 25%-35% of water friction | - - - -   (4) USING METHOD Should mix with acid at room temperature before using and guarantee no fisheyes. Can use agitator while preparing indoors, adding the dry powder into the whirlpool, stir for 1 hour to avoid caking. Can store for 2 year in cool and dry place.