Hydraulic fracturing fluid composition, its preparation method and method for producing underground rock fracture

Hydraulic fracturing fluid composition, its preparation method and method for producing underground rock fracture

  • CN 1,500,177 B
  • Filed: 02/14/2002
  • Issued: 05/29/2013
  • Est. Priority Date: 02/20/2001
  • Status: Active Grant
First Claim
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1. fracturing fluid composition comprises:

  • A) liquid, aqueous, andB) at least a polymer at described liquid, aqueous middle formation viscoelastic gel, it is characterized in that described polymer is the block copolymer that comprises the block of at least a water-soluble nature and comprise the block of at least a main hydrophobic property, the at least a of wherein said block is that wherein hydrophobic monomer is by the copolymer of the copolymerization acquisition of hydrophilic and hydrophobic monomer;

    -vi-ny l aromatic monomers;

    -alkadienes;

    OrThe Arrcostab of-acrylic acid and methacrylic acid, its alkyl contain 1-10 carbon atom;

    And wherein hydrophilic monomer is;

    -ethylenically unsaturated carboxylic acids;

    -acrylamide, N methacrylamide, NIPA, Methacrylamide, polyethylene glycol methacrylate-styrene polymer, polyethylene glycol acrylate;

    -2-acrylamide-2-methylpro panesulfonic acid sodium, SSS or sodium vinyl sulfonate;

    Wherein the block of main hydrophobic property has 0 and is lower than the hydrophilic unit of the amount between the 33wt%, based on the gross weight of the unit of hydrophobic block.

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