公开(公告)号：US20120237380A1

公开(公告)日：2012-09-20

申请号：US13048383

申请日：2011-03-15

Applicant: Jorge Robles-Villa

Inventor： Jorge Robles-Villa

IPC: F01C1/10 ,  E21B43/00

CPC classification number: F04C2/1071 ,  E21B43/126 ,  F04C13/008 ,  F04C14/28 ,  F04C15/0073

Abstract: A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

Abstract translation: 用于渐进式空腔泵的后旋减速器在泵单元的井上部署。 后旋减速器具有连接到驱动串的部分的轴。 叶轮配置在轴上并能轴向和径向移动。 在未啮合状态下，叶轮和轴可以相对于彼此旋转，使得驱动串可以在驱动方向上旋转而不受叶轮阻碍。 在接合状态下，叶轮以轴旋转方向旋转。 以这种方式，叶轮上的叶片可以通过试图迫使提升的流体柱在井下通过叶轮后向上流动来阻止轴和驱动柱的后倾。 减速器可以使用销和槽布置或可啮合齿的布置以将叶轮接合到轴的旋转。