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GH-10 Retarder for High Temperature Oil Well Cementing

Thickening time,min/90℃,53.3MPa,49min Mutation value of thickening curve,Bc
≥120.0 ≤10.0
Thickening time extension value, min   Sensitivity of increase,%  
≥60.0 ≤25.0

    description1

    Product Description

    GH-10 is the reaction of dicarboxylic acid group and sulfonate group with tricalcium aluminate and tricalcium silicate, through adsorption, chelation, dispersion and wetting, etc., through the diffusion electric double layer at the initial stage of cement hydration Disperse cement particles, form a solvated film with calcium ions on the surface of cement particles, and preferentially adsorb on tricalcium aluminate to slow down the hydration effect, showing a strong retarding effect, while it shows a weaker effect on tricalcium silicate Adsorption performance, which also ensures the development of later cement strength.

    Characteristics

    Polymerized by sulfonate, organic acid, etc.
    Normal dosage: 0.3%~2.5%(BWOC).
    Suitable temperature:60℃~180℃(BHCT).
    It is used in the medium and deep well.It can prolong the thickening time effectively and increase the pumped time. It can formulate a right angle thickening cement slurry system.
    If there is the a settlement phenomenon happened to the cement slurry because of its strong dispersion performance, the appropriate amount of G302 (oil well cement fluid loss additive) can be added to the cement slurry.

    Technical Specification

    Items

    Specification

    Appearance

    Homogeneous liquid

    Initial consistency , Bc/90℃,53.3MPa,49min

    ≤30.0

    Thickening time,min/90℃,53.3MPa,49min

    ≥120.0

    Mutation value of thickening curve,Bc

    ≤10.0

    Thickening time extension value, min  

    ≥60.0

    Sensitivity of increase,%  

    ≤25.0

    Sensitivity of temperature,%

    ≤20.0

    Transition time,min/90℃,53.3MPa,49min

    ≤40.0

    Free liquid(90 ℃),%

    ≤1.4

    Compression strength, MPa/113℃,21MPa,24h

    ≥14.0

    Packing, Storage

    Be stored in plastic barrels, 25kg/barrel.
    Be kept away from moisture, Stored in cool and dry situation. 
    Storage life time is one year. 
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