摘要:
A method of treating a subterranean formation at temperatures of at least 150° C., the method includes introducing a pressurized fracturing liquid including proppants and solid channelants to create fractures in the subterranean formation, wherein the channelants include (PLA) solids derived from a blend of poly L-lactic acid (PLLA) and poly D-lactic acid (PDLA).
摘要:
The present invention relates to multi-arm star macromolecules which are used as thickening agents or rheology modifiers, including use in hydraulic fracturing fluid compositions. In one aspect of the invention, a star macromolecule is capable of thickening via a dual mechanism comprising (1) self-assembly of the hydrophobic polymerized segments of the star macromolecules via hydrophobic interactions or associations, and (2) association, reaction, or combination of the hydroxyl-containing polymerized segments of one or more of the star macromolecules.