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公开(公告)号：US09683571B2
公开(公告)日：2017-06-20
申请号：US14171653
申请日：2014-02-03
Applicant: Schlumberger Technology Corporation
Inventor： Tony R. Morrison , David Milton Eslinger , Kean Wee Cheah , Lye Heng Chang , Raju Ekambaram , Narayanan Lakshmanan
CPC classification number: F04D1/063 , F04D29/445 , F04D29/548 , F04D29/648
Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.
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公开(公告)号：US10738794B2
公开(公告)日：2020-08-11
申请号：US15502242
申请日：2015-07-31
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Abhisek Robert Rao , Jerome Ang Sze Jiunn , David Milton Eslinger , Tony R. Morrison
Abstract: A technique employs a system and methodology for improving sand control in pumps. The technique may be used in centrifugal pumps by providing uniquely constructed rib feature to facilitate sand control and thus reduction of erosion due to sand in the pumped fluid. The improved sand control is useful in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. The rib feature may be used in combination with a shield and arranged along diffuser bowl walls or other diffuser walls within sequential pump stages.
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公开(公告)号：US20140294575A1
公开(公告)日：2014-10-02
申请号：US14171653
申请日：2014-02-03
Applicant: Schlumberger Technology Corporation
Inventor： Tony R. Morrison , David Milton Eslinger , Kean Wee Cheah , Lye Heng Chang , Raju Ekambaram , Narayanan Lakshmanan
CPC classification number: F04D1/063 , F04D29/445 , F04D29/548 , F04D29/648
Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.
Abstract translation: 提供了具有增加的压缩载荷能力的离心泵级。 在一个实施方案中，离心泵级包括具有能够支撑增加的轴向力的外壁的扩散器。 外壁的配合表面可支撑穿过整个外壁整个厚度的后续泵级的堆叠产生的轴向力。 扩散器可以是包括承载模块和流动扩散模块的两件式组件。 承载模块可以是强的管状合金的气缸，而流动扩散模块可以以提高液压效率的方式分开铸造。 用于径向定位泵级的各种装置可以减轻承载模块的任务，使其对齐附加的泵级。 单个刚性管也可用作多个泵级的承载模块。 管可以用薄壁制成以增加泵的体积。
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