Oil well crushing agent

Oil well crushing agent

  • CN 1,970,680 B
  • Filed: 06/24/2003
  • Issued: 08/26/2015
  • Est. Priority Date: 06/25/2002
  • Status: Active Grant
First Claim
Patent Images

1. , by the polysaccharide that depolymerizing polysaccharides to the method for predetermined molecular weight is produced, described method comprises the step allowing polysaccharide stand the radiation primarily of electron beam composition, and the polysaccharide of wherein said production is:

  • Hydroxypropyl guar rubber powder, it has 77,500-513, the weight average molecular weight of 000;

    Guar gum flour, it has 68,100-571, the weight average molecular weight of 000;

    OrGuar-bean lobe, it has 94,200-706, the weight average molecular weight of 000.

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