Low-temperature hardening scurry-proof cement slurry for well cementing

Low-temperature hardening scurry-proof cement slurry for well cementing

  • CN 101,126,018 A
  • Filed: 08/15/2006
  • Published: 02/20/2008
  • Est. Priority Date: 08/15/2006
  • Status: Active Application
First Claim
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1. low-temperature hardening scurry-proof cement slurry for well cementing, it is characterized in that being made up of 100 weight part silicate cementing concretes, 50-95 weight parts water, 10-100 weight part lightweight toughener, 3-8 weight part low-temperature early strength agent, 3-8 weight part anti-migration agent, 0.2-1 weight part rheological property conditioning agent, 0.1-0.3 weight part defoamer, wherein the lightweight toughener is made up of glass microballon, 40-60 weight part 40-100 μ

  • m ultrafine high activity slag, 20-30 weight part 0.5-3 μ

    m fine cement and the fine silica flour of 10-20 weight part 0.02-0.5 μ

    m of 100 weight part 150-200 μ

    m;

    Low-temperature early strength agent is made up of 100 weight part sulfuric acid calcium powders, 80-100 weight part trolamine, 40-60 weight part water glass;

    Anti-migration agent is made up of the poly-sodium naphthalene sulfonate of gypsum, 200-300 weight part of 100 weight part 20-80 order polyvinyl alcohol, 150-300 weight part and the borax of 5-10 weight part;

    The rheological property conditioning agent is made up of 100 weight part sodium polystyrene sulfonates and 80-100 weight part calcium lignin sulphonate;

    Defoamer is made up of the polyoxyethylene glycol ether.

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