Large-pore composite plugging system and preparation method thereof

Large-pore composite plugging system and preparation method thereof

The invention provides a large-pore composite plugging system and a preparation method thereof, belonging to the technical field of oil exploitation. The large-pore composite plugging system comprises amphoteric polyacrylamide solution with concentration of 0.2-0.5wt%, a flocculation agent solution...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GUO HONGWEI, ZHAO LING, CHEN LEI, WANG LVSHAN, TANG YANYAN, JIN YANXIN, ZHANG DONGHUI, DU LIBIN, LIU CHENGJIE, GAO SHENGWEI, SHANG ZHAOHUI, YANG SHENGXIAN, TIAN YUQIN, ZHANG GUANGYAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:The invention provides a large-pore composite plugging system and a preparation method thereof, belonging to the technical field of oil exploitation. The large-pore composite plugging system comprises amphoteric polyacrylamide solution with concentration of 0.2-0.5wt%, a flocculation agent solution and inorganic granules, wherein the flocculation agent solution is a cationic polymer solution with concentration of 0.2-0.5wt% or cationic surface active agent with concentration of 1-4wt%. The large-pore composite plugging system has the advantages of high elasticity, high plugging capability, movability and good thermal stability.