High viscosity polyanionic cellulose (PAC-HV)

High viscosity polyanionic cellulose (PAC-HV)

Polyanionic cellulose (PAC) is a semi-synthetic polymer, classified as an ionic cellulose ether. Due to its concentrated molecular weight announcement and uniform distribution of substituent groups, it exhibits excellent salt resistance and water loss resistance. This makes PAC an effective fluid loss control agent, widely employed in both marine and land-based petroleum drilling as a filtrate reducer or thickening agent. Its superior temperature resistance compared to other cellulose ethers makes it an indispensable component, particularly in high-temperature well scenarios, where it serves as an essential anionic cellulose thickener for gelcoat applications.

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Polyanionic cellulose (PAC)

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High viscosity polyanionic cellulose (PAC-HV)

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  • DESCRIPTION

  • Polyanionic cellulose (PAC) is a semi-synthetic polymer, classified as an ionic cellulose ether. Due to its concentrated molecular weight announcement and uniform distribution of substituent groups, it exhibits excellent salt resistance and water loss resistance. This makes PAC an effective fluid loss control agent, widely employed in both marine and land-based petroleum drilling as a filtrate reducer or thickening agent. Its superior temperature resistance compared to other cellulose ethers makes it an indispensable component, particularly in high-temperature well scenarios, where it serves as an essential anionic cellulose thickener for gelcoat applications. 

    High viscosity polyanionic cellulose (PAC-HV) 

    High viscosity polyanionic cellulose quality indicators 

    Item

    Indicators
     

    GB/T 5005-2010（API 13A）

    Q/SHCG106-2017

    Starch or starch derivatives

    None

    —

    Exterior condition

    Free-flowing white or light yellow powder, no lumps

    Drying reduction %

    ≤10

    ≤10.0

    Purity %

    —

    ≥90.0

    Degree of substitution D.S

    —

    ≥0.90

    Chloride ion content

    —

    ≤1.0

    Apparent viscosity (mPa.s)

    ≥50.0

    ≥50.0

    API loss in ml

    ≤23.0

    ≤18.0

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