CMC for oil

CMC for oil

Petroleum grade CMC serves as a water-soluble colloid in the drilling mud system, composing the drilling fluid. It exhibits a high water loss control capability, functioning as a filtrate reducer. At lower dosages, it effectively controls water loss while maintaining the mud's other properties. The mud cake formed is of high quality, firm, and tough. Moreover, CMC demonstrates excellent temperature resistance and superior salt resistance. It retains its ability to reduce water loss and maintain a certain rheological behavior even at specific salt concentrations. In both brine and aqueous solutions, the viscosity remains almost unchanged. This makes it particularly suitable for the demands of offshore drilling and deep wells.

Category:

Carboxymethyl cellulose Na (CMC)

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CMC for oil

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  • DESCRIPTION

  • Petroleum grade CMC serves as a water-soluble colloid in the drilling mud system, composing the drilling fluid. It exhibits a high water loss control capability, functioning as a filtrate reducer. At lower dosages, it effectively controls water loss while maintaining the mud's other properties. The mud cake formed is of high quality, firm, and tough. Moreover, CMC demonstrates excellent temperature resistance and superior salt resistance. It retains its ability to reduce water loss and maintain a certain rheological behavior even at specific salt concentrations. In both brine and aqueous solutions, the viscosity remains almost unchanged. This makes it particularly suitable for the demands of offshore drilling and deep wells. 

    CMC effectively controls the rheological behavior of mud, displaying good non-Newtonian fluid characteristics. 

    It is used as a cementing fluid to prevent fluid from entering rock formations and fractures. In fracturing applications, CMC helps control the loss of fluid into the well. 

    CMC-LV quality indicators

    Item

    Indicators

    GB/T 5005-2010

    Q/SH CG0165—2023

    Exterior condition

    White or light yellow powder, free of lumps

    Starch

    None

    None

    Moisture (mass fraction)

    —

    ≤10.0%

    Purity (mass fraction)

    —

    ≥80.0%

    Degree of substitution

    —

    ≥0.80

    pH

    —

    7.0~9.0

    Viscosity (Reading at 600r/min for 3% sample suspension

    ≤90

    ≤90

    Filtration Loss (ml)

    ≤10

    ≤10

     

    CMC-HV quality indicators 

    Item

    Indicators

    GB/T 5005-2010

    Q/SH CG0165—2023

    Exterior condition

    White or light yellow powder, free of lumps

    Starch or starch derivatives

    None

    None

    Moisture (mass fraction)

    —

    ≤10.0%

    Purity (mass fraction)

    —

    ≥85.0%

    Degree of substitution

    —

    ≥0.80

    pH

    —

    6.5~8.0

    Filtration Loss (ml)

    ≤10.0

    ≤10.0

    Viscometer 600r/min reading

    Deionized water

    ≥30.0

    ≥30.0

    Brine

    ≥30.0

    ≥30.0

    Saturated brine

    ≥30.0

    ≥30.0

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Petroleum grade CMC serves as a water-soluble colloid in the drilling mud system, composing the drilling fluid. It exhibits a high water loss control capability, functioning as a filtrate reducer. At lower dosages, it effectively controls water loss while maintaining the mud's other properties. The mud cake formed is of high quality, firm, and tough. Moreover, CMC demonstrates excellent temperature resistance and superior salt resistance. It retains its ability to reduce water loss and maintain a certain rheological behavior even at specific salt concentrations. In both brine and aqueous solutions, the viscosity remains almost unchanged. This makes it particularly suitable for the demands of offshore drilling and deep wells.

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