Pumping unit polished rod retainer

Abstract

The invention relates to a retainer applied to a pumping unit polished rod in a pumping well, in particular to a pumping unit polished rod retainer comprising hangers and a retaining clamp. The hangers are hung on a pumping unit beam hanger. A retaining plate is fixed to the lower ends of the hangers through screws and nuts penetrating the lower ends of the hangers. A pumping unit polished rod penetrates the pumping unit beam hanger and the retaining plate. The retaining clamp is fixed to the upper end of the pumping unit beam hanger and the pumping unit polished rod at the lower end of the retaining plate. oil-gas leakage, well stoppage and environmental pollution caused by breakage of the pumping unit polished rod are reduced, cost per ton is reduced, precision management is improved, and environmental sanitation is ensure; researches and trials of the retainer on high-load pumping units during actual oilfield operations show that normal operation of the pumping unit can be maintained after a load clamp of the polished rod breaks, and the retainer has good effect.

Description

technical field [0001] The invention relates to a detachment preventing device used on a polished rod of a pumping unit in an oil pumping well, in particular to a detachment preventing device for a polished rod of a pumping unit. Background technique [0002] At present, most oilfields use 12-type pumping units for mechanical production when producing heavy oil. Due to the heavy load of the pumping unit during heavy oil production, the polished rod of the pumping unit often breaks at the load clip. After the polished rod breaks, the oil well must be Stopping production will reduce the production output; after the pumping unit loses its load, the up and down imbalance will cause damage to the gearbox and motor; in addition, after the polished rod of the pumping unit breaks, it will fall into the well. If the wellhead is not controlled, the production well and Crude oil in the entire oil production system will emerge from the packing box, causing extensive pollution on the wel...

AI Technical Summary

Problems solved by technology

[0002] At present, most oilfields use 12-type pumping units for mechanical production when producing heavy oil. Due to the heavy load of the pumping unit during heavy oil production, the polished rod of the pumping unit often breaks at the load clip. After the polished rod breaks, the oil well must be Stopping production will reduce the production output; after the pumping unit loses its load, the up and down imbalance will cause damage to the gearbox and motor; in addition, after the polished rod of the pumping unit breaks, it will fall into the well. If the wellhead is not controlled, the production well and Crude oil in the entire oil production system will emerge from the packing box, causing extensive pollution on the well site

Therefore, the problem of polished rod fracture has seriously restricted the development of Haiwaihe Oilfield.

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