FIELD: engines and pumps.
SUBSTANCE: invention relates to machine building and can be used in production wells for alignment of pump sucker-rod pumps. Proposed unit comprises upper centraliser and coupling secured on one side to said upper centraliser. On coupling opposite side, lower centraliser, similar to upper one, is secured. Note here that ribs of flexed plates are fitted in upper and lower centraliser threaded fasteners, OD of said ribs being larger than ID of oil-well tubing. Lock nuts are fitted on the ends of said threaded fasteners. Application of plates in the design of proposed alignment unit allows locking of centralisers in oil-well tubing and concentric arrangement of pump sucker rods in oil-well tubing.
EFFECT: higher reliability of equipment, reliable locking of centraliser in oil-well tuning.
1 dwg
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