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    • 73. 发明申请
    • DELIVERY OF PARTICULATE MATERIAL BELOW GROUND
    • 交付下面的颗粒材料
    • US20120048554A1
    • 2012-03-01
    • US12868177
    • 2010-08-25
    • Trevor HughesEvgeny BarmatovJill GeddesMichael FullerBruno DrochonSergey Makarychev-Mikhailov
    • Trevor HughesEvgeny BarmatovJill GeddesMichael FullerBruno DrochonSergey Makarychev-Mikhailov
    • E21B43/16C09K8/62
    • C09K8/805C09K8/665C09K8/70C09K2208/28E21B43/267
    • A wellbore fluid comprises an aqueous carrier liquid, hydrophobic particulate material suspended therein and a gas to wet the surface of the particles and bind them together as agglomerates. The hydrophobic particulate material has a specified maximum particle size and/or minimum surface area: namely a volume median particle size d50 of not more than 200 micron, determined as median diameter of spheres of equivalent volume and/or a surface area of at least 30 m2 per liter (0.03 m2 per milliliter), determined as surface area of smooth spheres of equivalent volume.The agglomeration of the particles by gas leads to the formation of agglomerates which contain gas and so have a bulk density lower than the density of the particles. This reduces the rate of settling. The fluid is particularly envisaged as a slickwater fracturing fluid in which the suspended particles are proppant. We have found that the small particle size and/or substantial surface area increases the amount of gas which can be retained within agglomerates and so enhances the buoyancy of the agglomerates. The end result is that a greater proportion of a hydraulic fracture is propped open.
    • 井眼流体包括水性载体液体,悬浮在其中的疏水性颗粒材料和用于润湿颗粒表面的气体并将其作为附聚物结合在一起。 疏水性颗粒材料具有规定的最大粒径和/或最小表面积:即体积中值粒径d50不大于200微米,确定为等体积的球体的中值直径和/或至少30的表面积 m2 /升(0.03平方米/毫升),确定为相当体积平滑球面的表面积。 通过气体的颗粒附聚导致形成含有气体的聚集体,因此其密度低于颗粒的密度。 这降低了沉降的速度。 流体特别设想为浮水压裂液,其中悬浮颗粒是支撑剂。 我们已经发现,小的颗粒尺寸和/或实质的表面积增加了可以在附聚物中保留的气体的量,并且因此增强了附聚物的浮力。 最终的结果是水力裂缝的比例较大。
    • 74. 发明申请
    • CALCIUM CARBONATE TO INCREASE VISCOSITY OF POLYACRYLAMIDE FLUIDS
    • 碳酸钙增加聚丙烯酰胺流体的粘度
    • US20110315385A1
    • 2011-12-29
    • US12823769
    • 2010-06-25
    • Lijun LinBruno DrochonLeiming LiSyed A. Ali
    • Lijun LinBruno DrochonLeiming LiSyed A. Ali
    • E21B43/16
    • C09K8/665C09K8/5045C09K8/5083C09K8/512C09K8/685
    • Compositions and methods of treating a subterranean formation including forming a fluid comprising polyacrylamide and calcium carbonate and introducing the fluid to the formation, wherein the viscosity of the fluid is higher than if no calcium carbonate is present. Compositions and methods of treating a subterranean formation penetrated by a well bore including forming a fluid comprising polyacrylamide, calcium carbonate, and crosslinker, and introducing the fluid to the formation, wherein the fluid viscosity at 100 s-1 is increased from 300 cP to 600 cP at a temperature of 93 degC. Compositions and methods of treating a subterranean formation penetrated by a well bore including forming a fluid comprising polyacrylamide and barium carbonate and introducing the fluid to the formation, wherein the viscosity of the fluid is higher than if no barium carbonate is present.
    • 处理地下地层的组合物和方法,包括形成包含聚丙烯酰胺和碳酸钙的流体并将流体引入地层,其中流体的粘度高于不存在碳酸钙时的粘度。 处理由井眼渗透的地层的组合物和方法,包括形成包含聚丙烯酰胺,碳酸钙和交联剂的流体,并将流体引入地层,其中100s -1的流体粘度从300cP增加到600 cP在93摄氏度的温度下。 处理由井眼渗透的地层的组合物和方法,包括形成包含聚丙烯酰胺和碳酸钡的流体并将流体引入地层,其中流体的粘度高于不存在碳酸钡时的粘度。