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    • 4. 发明申请
    • DELIVERY OF NANODISPERSIONS BELOW GROUND
    • 交付地下的纳米尺度
    • WO2011073747A3
    • 2011-10-13
    • PCT/IB2010002803
    • 2010-10-28
    • SCHLUMBERGER TECHNOLOGY BVSCHLUMBERGER HOLDINGS LTD SHLSCHLUMBERGER CA LTDSCHLUMBERGER SERVICES PETROLPRAD RES & DEV LTDSCHLUMBERGER SEACO INCHARTSHORNE ROBERT SETHTAN KHOOI YEEITUSTIN GARY JOHN
    • HARTSHORNE ROBERT SETHTAN KHOOI YEEITUSTIN GARY JOHN
    • C09K8/58E21B43/16
    • C09K8/035C09K2208/10E21B43/25E21B47/1015
    • Delivery of a substance to a subterranean location is achieved by suspending the substance as nanoparticles in a carrier fluid in which the substance is insoluble. The procedure may start by forming a dispersible powder composition, which is done by dissolving the substance in a solvent, emulsifying the resulting solution as the dispersed phase of an emulsion, and freeze- drying the emulsion to a powder. On mixing the powder with a fluid in which the substance is insoluble, any soluble constituents of the powder dissolve and the insoluble substance becomes a dispersion of nanoparticles of the substance. Then, the fluid containing the dispersed substance is pumped to the subterranean location. The dispersion of nanoparticles has surprising stability, facilitating transport to the subterranean location. At the subterranean location the dispersed nanoparticles may migrate into other fluid encountered there: more specifically a dispersed tracer substance may migrate from injected water into hydrocarbon in a hydrocarbon reservoir. Another possibility is that dispersion as nanoparticles enables interaction with other constituents of the fluid to be delayed until the subterranean location is reached: more specifically the fluid may contain polymer and the dispersed nanoparticles may comprise an agent which participates in cross-linking and consequent viscosification of the polymer.
    • 通过将物质作为纳米颗粒悬浮在物质不溶的载体流体中来实现将物质递送到地下位置。 该方法可以通过形成可分散的粉末组合物开始,其通过将物质溶解在溶剂中,乳化所得溶液作为乳液的分散相,并将乳液冷冻干燥成粉末。 在将粉末与物质不溶的流体混合时,粉末的任何可溶性成分溶解,不溶物质成为物质的纳米颗粒的分散体。 然后,将含有分散物质的流体泵送到地下位置。 纳米颗粒的分散体具有惊人的稳定性,便于运输到地下位置。 在地下位置,分散的纳米颗粒可以迁移到其中遇到的其它流体中:更具体地,分散的示踪物质可以从注入的水迁移到烃储层中的烃中。 另一种可能性是作为纳米颗粒的分散体能够与要延迟的流体的其它组分相互作用,直到达到地下位置:更具体地,流体可以含有聚合物,并且分散的纳米颗粒可以包含参与交联和随后的粘稠化 聚合物。