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Home >> Solution >> HTHS High Density Cementing System ( DensCem )
HTHS High Density Cementing System ( DensCem )
  • DensCem-Application

      Ⅰ Cementing in deep well or ultra-deep well.

      Ⅱ Cementing in formation with high porosity pressure, ,un-stability wellbore and plastic flow zone.

      Ⅲ Cementing in complexed formation, such as a salt-paste zone.

      Ⅳ Cementing in horizontal well or inclined section.

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  • DensCem-Characteristics
      • Good stability at high temperatures without any other special additives.
      • Low dosage.
      • Using the principle of particle grading to improve the performance of the system.
      • Using super ingredient additives for high temperature resistance and salt resistance.
      • Good compatibility with different brands of cement and different series.
      • Good stability after agingexperiment.
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DensCem Performance of saltwater cementing slurry
Items Temperature（℃）
60 90 120 150 170
Density,g/cm³ 2.40 2.40 2.40 2.40 2.40
Fluidity,cm 20.5 20.5 20.5 19.4 19.6
Thickening time,min 307 322 324 334 279
Initial consistrency,Bc 25 24 27 29 30
（40～100）BcTime,min 20 10 7 6 3
Free water,% 0 0 0 0 0
API Filtration,mL 16 20 40 40 36
C S(Top),MPa 16.3 17.5 21.4 19.2 16.9
C S(Bottom),MPa 15.2 17.1 19.7 17.1 21.4
Shrinkage rate,% 0 0 0 0 0
DensCem-Advantages
    • The specific density can be controlled at a range of 2.40~2.80g/cm³.
    • Good rheology and sedimentary stability.
    • Low fluid loss, adjustable thickening time, high compressive strength and excellent cementing performance.
    • Good compatibility with different brands of cement and different series.
    • High temperature ratings up to 170 ℃, with fresh water to saturated salt water availa.
DensCem Performance in Freshwater Cementing Slurry
Items Temperature（℃）
60 90 120 150 170
Density,g/cm³ 2.40 2.40 2.40 2.40 2.40
Fluidity,cm 19.8 20.3 20.5 19.7 20.7
Thickening time,min 286 299 266 301 271
Initial consistency,Bc 27 28 31 24 30
（40～100）BcTime,min 21 19 9 5 2
Free water,% 0 0 0 0 0
API Filtration,mL 32 28 28 36 42
C S(Top),MPa 15.8 26.6 16.5 16.9 16.3
C S(Bottom),MPa 19.5 17.8 24.2 16.5 16.7
Shrinkage rate,% 0 0 0 0 0
DensCem Performance of saltwater cementing slurry

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