Rod body material collection type centralizing sucker rod and casting method thereof

Abstract

The invention discloses a rod body material collection type centralizing sucker rod and a casting method thereof. The casting method comprises the steps that the rod body of the sucker rod is extruded and clustered to form a spline by a mold, ideal mechanical property strength can be reached by thermal refining, after machining is carried out, and a centering guide is subjected to injection molding on the rod body of the sucker rod by an injection molding machine at the corresponding position where the spline is subjected to extrusion moulding. According to the rod body material collection type centralizing sucker rod and the casting method thereof, the centering guide is firmly and tightly fixed to the rod body, the centering guide on the rod body is effectively prevented from sliding and falling off in a sucker rod string and in the process of driving the sucker rod string to extract oil, the extract oil of the sucker rod string is better solved, and an ideal oil extraction effect is realized.

Description

technical field [0001] The invention relates to a downhole tool used in the field of oil field development and a forging and extrusion method thereof, in particular to a novel rod body extruding aggregate type righting sucker rod product and a forging and extrusion method thereof, which belong to the field of petroleum system oil recovery. Background technique [0002] The sucker rod of the rod well pump in the oil well is several thousand meters long, and the sucker rod string continuously reciprocates up and down during the oil production process, especially in the oil well with inclined well or curved arrangement, the sucker rod and its coupling will continuously Continuously produce eccentric wear on the inner wall of the oil pipe. Due to the increasingly serious wear and tear, oil pipes are worn out or sucker rod strings break off accidents often occur, and production has to be stopped frequently for maintenance operations, which not only affects crude oil production, b...

AI Technical Summary

Problems solved by technology

The roller of the roller centralizer is easily stuck in the well due to formation sand, corrosion and other reasons. After the stuck, the up and down rolling of the roller becomes sliding, forming a knife-edge effect on the inner wall of the oil pipe, which accelerates the wear of the oil pipe

Slider type and hoop type centralizers are stuck on the sucker rod body, which cannot be positioned well on the rod body. The centralizer on the driving sucker rod column is easy to slip and fall off, and the effect of anti-eccentric wear is not good

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