Device and method for cleaning flexible continuous sucker rods

Abstract

The invention relates to a device and method for cleaning flexible continuous sucker rods. According to the technical scheme, the device comprises an unreeling machine, a reeling machine, a front guide device, a rear guide device, a primary cleaning unit, a secondary cleaning unit and a detection device; the unreeling machine and the reeling machine are disposed on both sides of the cleaning and detection production line for unreeling and reeling the continuous sucker rods respectively; the primary cleaning unit and the secondary cleaning unit are independent of each other but share the same structural composition; the detection device is an ultrasonic detector which is installed at the outlet end of the secondary cleaning unit; the front guide device is installed at the inlet end of the primary cleaning unit; and the rear guide device is installed at the outlet end of the detection device. The device and the method have the beneficial effects that the continuous sucker rods to be cleaned pass through the primary cleaning unit and the secondary cleaning unit in sequence via the reeling machine, and are subjected to nondestructive inspection with the ultrasonic detector after beingcleaned, and qualified carbon rods are reeled with the reeling machine; thus, the problem of absence of cleaning devices specially suitable for flexible continuous sucker rods is solved.

Description

technical field [0001] The invention relates to the field of cleaning and detection of continuous sucker rods, in particular to a cleaning device and method for flexible continuous sucker rods. Background technique [0002] Mechanical oil recovery is the main way of traditional oil recovery at home and abroad, while rod pumping is the most widely used technology in the world's petroleum industry today. The number of wells using mechanical oil recovery in the world is about 90% of the total number of production wells, while the number of wells using rod pumps is 805% of the number of mechanical oil recovery wells. At present, about 90% of the oil wells on land in my country use rod pumps to pump oil. However, due to the structural characteristics and processing technology of the rigid sucker rod commonly used in pump rods, the metal internal structure defects (mainly in the heat treatment transition zone near the end of the rigid sucker rod) are easy to break and trip from h...

AI Technical Summary

Problems solved by technology

[0004] However, the problem with the flexible continuous sucker rod is that it is easy to cause damage to the rod body during long-term use and lifting operations. The rod body needs to be inspected and repaired before reuse to ensure safe and reliable use of the sucker rod.

[0005] At present, there is no cleaning equipment specially suitable for flexible continuous sucker rods. It is necessary to design and develop a set of cleaning and testing equipment to meet the automatic and continuous cleaning and testing of flexible continuous sucker rods.

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