Producing technique of steel cable for pumping rod

Abstract

The invention relates to a production technology of the wire rope used in the pumping rod, with the structural key points that the invention adopts an irrational structure as the major structure of the wire rope, the zinc is plated on the surface of the wire of the major structure, forming a galvanized wire rope, after pre-tensioning, the surface of the galvanized wire rope is painted with a layer of high molecular polymer. The technology includes the following steps: 1. adopting the irrational structure as the major structure of the wire rope; 2. adopting the surface state as wire galvanization; 3. through the processes of wire drawing, stranding and laying up, getting a wire rope; 4. adopting the pre-tensioning technique to the wire rope, taking the 45 to 55 percent of the breaking force as the pre-tensioning load, keeping 100 to 130 minutes in the static load, then slowly and evenly releasing the load; 5. painting a layer of high molecular polymer at the external surface of the wire rope after pre-tensioning. The pumping rod adopting the wire rope of the invention has a high strength, low friction with the oil pipe and strong erosion-resisting capacity, thereby can completely replace the pumping rod made of the low carbon alloy round steel.

Description

technical field [0001] The invention relates to a steel wire rope, in particular to a production process of a steel wire rope for a sucker rod used in a rod pump pumping method in the petroleum industry, and belongs to the technical field of metal products. Background technique [0002] Rod pump pumping method is the most widely used mechanical oil recovery technology at home and abroad. It's simple, convenient, and adaptable. At present, more than 85% of the mechanical oil production wells adopt the conventional three-pumping (pumping unit, sucker rod and pump) technology for oil production. [0003] The sucker rod is an important part of the oil pumping equipment. It transmits the motion and energy of the pumping unit to the downhole pump. The fatigue strength and service life of the sucker rod determine and affect the maximum pumping depth and discharge quantity. At present, the sucker rods used in the pumping unit are mainly composed of a plurality of low-carbon alloy...

AI Technical Summary

Problems solved by technology

[0006] At present, the main oilfields have entered the middle and later stages of production, the pump suspension is gradually deepening, and the water content of the well fluid is constantly rising. In order to increase production, it is necessary to use large pumps for forced production. In this case, ordinary sucker rods cannot adapt due to insufficient strength. oil well production needs

[0007] 2. Cannot adapt to the needs of inclined shaft mining

[0014] Due to the wax deposition in oil wells, the working load of sucker rods increases, resulting in frequent breakage of sucker rods, while ordinary sucker rods do not have wax removal function due to insufficient strength