Sucker rod centralizer
This patent describes a device for centralizing at least one sucker rod within a production pipe downhole in a well and for reducing frictional forces between the pipe and at least one sucker rod. It comprises an elongate, substantially cylindrical body member having a longitudinal axis, a plurality of slots within the member and a rotatable member mounted within each slot, each of the plurality of slots has its major dimension along a first axis parallel to the longitudinal axis of the body member and is oriented with respect to the other seats so as to form a helicoidal array for maximizing the total surface contact area between the rotatable members and the pipe and for decreasing the forces acting on each rotatable member.
- Assignee:
- Intevep, S.A., Caracas
- Patent Number(s):
- US 4871020
- Application Number:
- PPN: US 7-098929A
- OSTI ID:
- 7014472
- Country of Publication:
- United States
- Language:
- English
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