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    • 46. 发明申请
    • HIGH SOLIDS CONTENT SLURRY METHODS AND SYSTEMS
    • 高固体含量浆料方法和系统
    • US20120000653A1
    • 2012-01-05
    • US12827853
    • 2010-06-30
    • Mohan K. R. PangaBalkrishna GadiyarBruno DrochonJohn W. Still
    • Mohan K. R. PangaBalkrishna GadiyarBruno DrochonJohn W. Still
    • E21B43/267
    • E21B43/04C09K8/80E21B43/267
    • A system and method are disclosed for low damage gravel packing. The system comprises a well bore; a gravel packing slurry comprising a carrier fluid and a solids mixture, wherein the solids mixture comprises a plurality of volume-averaged particle size distribution (PSD) modes such that a packed volume fraction (PVF) exceeds 0.75, wherein the solids mixture comprises at least a proppant PSD mode and a fines PSD mode; a pump to circulate the slurry in the wellbore and form a proppant pack; and a dispersant source effective to facilitate fines flowback from the pack. The method comprises circulating the slurry through a wellbore to form a proppant pack; contacting fines in the pack with a dispersant; and passing fluid through the pack to remove fines from the pack. Dispersants disclosed as present in the slurry or in another treatment fluid include polyelectrolyte, polysulfonate, polycarboxylate, lignosulfonates, polymelamine sulfonates, polystyrene sulfonates, polynaphthalene sulfonates, polyacrylates having a weight average molecular weight less than 10,000 Daltons, anionic, cationic, amphoteric and zwitterionic surfactants, and nonionic surfactants.
    • 公开了一种用于低损伤砾石包装的系统和方法。 该系统包括一个井眼; 包括载体流体和固体混合物的砾石填充浆料,其中所述固体混合物包含多个体积平均粒度分布(PSD)模式,使得填充体积分数(PVF)超过0.75,其中所述固体混合物至少包含 支撑剂PSD模式和罚款PSD模式; 使浆料在井眼中循环并形成支撑剂包的泵; 以及有效促进从包装中回流的细粉的分散剂源。 该方法包括使浆料循环通过井眼形成支撑剂包; 将细粉与分散剂接触; 并将流体通过包装以从包装中除去细粒料。 存在于浆料或另一种处理流体中的分散剂包括聚电解质,聚磺酸盐,聚羧酸盐,木质素磺酸盐,聚三聚氰胺磺酸盐,聚苯乙烯磺酸盐,聚萘磺酸盐,重均分子量小于10,000道尔顿的聚丙烯酸盐,阴离子,阳离子,两性和两性离子表面活性剂 ,和非离子表面活性剂。