发明名称 PC rod guide with rotor ridges
摘要 A rod guide is provided for use in a rotating rod string (12) for powering a progressive cavity pump (14) for pumping downhole fluids through tubing (16) to the surface. The rod guide includes a rotor sleeve (20) secured to the rod string. The rotor sleeve includes a plurality of axially spaced reduced diameter body portions 22, and a plurality of axially spaced enlarged diameter ridge portions 24. Upper and lower stop surfaces 26, 28 on the ridge portions permit axial movement of the stator sleeve with respect to the rotor sleeve. A stator sleeve (40) positioned over the rotor sleeve, and has a sleeve body (42) with a generally circular configuration with opposing circumferential ends (44, 46) spreadable to position the stator sleeve about the rotor sleeve. A plurality of ribs (48) extend outward from the stator sleeve body.
申请公布号 US7854259(B2) 申请公布日期 2010.12.21
申请号 US20080009194 申请日期 2008.01.17
申请人 ROBBINS & MYERS ENERGY SYSTEMS L.P. 发明人 DAVISON MATTHEW S.
分类号 E21B17/10 主分类号 E21B17/10
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