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    • 3. 发明授权
    • Multiple tub mobile blender
    • 多桶移动搅拌机
    • US06193402B1
    • 2001-02-27
    • US09165649
    • 1998-10-02
    • Kristian E. GrimlandTimothy Lloyd Anderson
    • Kristian E. GrimlandTimothy Lloyd Anderson
    • B01F1502
    • E21B43/26B01F3/1221B01F7/32B01F13/0035B01F13/004B01F13/0045B01F15/0201B01F15/0251B01F15/0266B01F15/0297B01F2003/1257Y10T137/0357Y10T137/0379Y10T137/87265
    • An improved oil and gas well servicing apparatus for blending and delivering a slurry of fracturing fluid and particulate matter at constant flow rate and pressure to a downhole pump is disclosed. Multiple blending tubs are mounted on a trailer or skid and are manifolded together in a slurry discharge manifold. The slurry discharge manifold combines the slurry discharged by the blending tubs and incorporates pipe sections of equal length to connect the blending tubs to the manifold. It is believed that the slurry discharge manifold and equal length piping provide balanced pressure drop between the individual blending tubs and creates a constant outlet pressure from the slurry discharge manifold. A fluid intake manifold may also be included to distribute fracturing fluid to the blending tubs. Hose connectors on each of the manifolds are provided on both sides of the apparatus for convenient operation from either side. A conveyer system delivers particulate matter, such as sand, to a distribution bin located above the blending tubs. A source of fracturing fluid may be attached to a hose connector on the fluid intake manifold. The blending tubs utilize a variable drive means placed above each blending tub and suspending an impeller in the blending tub and rotating it about a vertical axis. Thus, a plenum space is provided between the impeller and the bottom of the tub. A tangential outlet is located adjacent to the plenum space and carries the slurry out of the blending tub and into the slurry discharge manifold.
    • 公开了一种用于将压裂液和颗粒物质的浆料以恒定流速和压力混合并输送到井下泵的改进的油气井维护装置。 多个混合桶安装在拖车或滑道上,并在歧管排放歧管中汇合在一起。 浆料排放歧管结合由混合桶排出的浆料并且包括相等长度的管段以将混合槽连接到歧管。 据信,浆料排出歧管和等长管道在各个混合桶之间提供均衡的压降,并且从浆料排出歧管产生恒定的出口压力。 还可以包括流体进气歧管以将压裂流体分配到混合桶。 每个歧管上的软管连接器设置在设备的两侧,方便从任一侧操作。 输送系统将诸如沙子的颗粒物质传送到位于混合桶上方的分配箱。 压裂流体的源可以附接到流体进气歧管上的软管连接器。 混合桶利用置于每个混合桶上方的可变驱动装置,并将叶轮悬挂在混合桶中并使其围绕垂直轴旋转。 因此,在叶轮和桶的底部之间设置有增压空间。 切向出口位于紧邻气室的空间处,并将浆料从混合槽中排出并进入浆料排出歧管。
    • 4. 发明授权
    • Multiple tub mobile blender and method of blending
    • US06286986B1
    • 2001-09-11
    • US09728393
    • 2000-12-04
    • Kristian E. GrimlandTimothy Lloyd Anderson
    • Kristian E. GrimlandTimothy Lloyd Anderson
    • B28C508
    • An improved oil and gas well servicing apparatus for blending and delivering a slurry of fracturing fluid and particulate matter at constant flow rate and pressure to a downhole pump is disclosed. Multiple blending tubs are mounted on a trailer or skid and are manifolded together in a slurry discharge manifold. The slurry discharge manifold combines the slurry discharged by the blending tubs and incorporates pipe sections of equal length to connect the blending tubs to the manifold. It is believed that the slurry discharge manifold and equal length piping provide balanced pressure drop between the individual blending tubs and creates a constant outlet pressure from the slurry discharge manifold. A fluid intake manifold may also be included to distribute fracturing fluid to the blending tubs. Hose connectors on each of the manifolds are provided on both sides of the apparatus for convenient operation from either side. A conveyer system delivers particulate matter, such as sand, to a distribution bin located above the blending tubs. A source of fracturing fluid may be attached to a hose connector on the fluid intake manifold. The blending tubs utilize a variable drive means placed above each blending tub and suspending an impeller in the blending tub and rotating it about a vertical axis. Thus, a plenum space is provided between the impeller and the bottom of the tub. A tangential outlet is located adjacent to the plenum space and carries the slurry out of the blending tub and into the slurry discharge manifold.