A detection device and detection method for oil pipe and sucker rod coupling

Abstract

The invention discloses oil pipe and sucker rod coupling detection equipment and a detecting method. The oil pipe and sucker rod coupling detection equipment is mainly composed of four parts including an oil pipeline assembly, a detection head assembly, an oil pipeline centralizing and detecting unit and a signal measuring and transmitting unit, wherein the detection head assembly is composed of a detecting shaft, a detecting roller, a detecting shift fork and a self-lubricating copper bush; the oil pipeline centralizing and detecting unit is composed of a shell, a shell end cover, a detecting arm, a detecting arm end cover and a regulating and centralizing piston rod; and the signal measuring and transmitting unit is composed of an energy accumulator, an energy accumulator fixing frame and a pressure sensor. The oil pipe and sucker rod coupling detection equipment is compact in structure, high in automaton degree, capable of working in a high-pressure or no-pressure state, suitable for detecting oil pipe and sucker rod couplings with various sizes, also incapable of generating influences to construction operations of other operating tools with heavy calibers and capable of providing accurate information for detection and alarm of coupling detection devices, meeting the requirement of HSE and ensuring that a coupling successfully passes through a wellhead along the central axis of the wellhead.

Description

technical field [0001] The invention relates to a control device for oil and gas wells in an oil field, and in particular to a device for wellhead operation support and oil pipe or sucker rod coupling detection equipment for downhole operations of oil (gas) wells. Background technique [0002] With the extension of the oilfield development process and the production time of oil and water wells, oil and water well maintenance operations are becoming more and more frequent. At present, most of the detection devices for oil pipes or sucker rod couplings used on site are purely mechanical, and there are mainly the following problems: [0003] ① The effect of righting and coupling detection is not satisfactory, which causes the coupling detection device to fail to correctly send out alarm or control signals; [0004] ②Parts wear more seriously, and the operating cost increases; [0005] ③ The detection of oil pipes or sucker rod couplings of different diameters cannot be satisfi...

AI Technical Summary

Problems solved by technology

[0003] ① The effect of righting and coupling detection is not satisfactory, which causes the coupling detection device to fail to correctly send out alarm or control signals;

[0004] ②Parts wear more seriously, and the operating cost increases;

[0005] ③It cannot satisfy the detection of different caliber tubing or sucker rod couplings, and cannot guarantee the free movement of large caliber working tools in the blowout preventer

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