Derrick detection method and equipment based on UAV

Abstract

The embodiments of the invention provide a derrick detection method and equipment based on an unmanned aerial vehicle. The method comprises the steps of denoising derrick no-load data, extracting central sample points, obtaining derrick no-load simplified data, similarly, obtaining derrick load simplified data, further obtaining derrick no-load structured data, and on the basis, obtaining derrickload structured data; converting the derrick no-load structured data into derrick no-load three-dimensional data, and converting the derrick load structured data into derrick load three-dimensional data; obtaining deformation displacement of a derrick in a subarea within a deformation generation related area according to the two pieces of three-dimensional data; obtaining pneumatic displacement ofthe derrick in a no-load derrick state and a load derrick state within the subarea, and solving difference of the pneumatic displacement and the deformation displacement, thereby obtaining practicaldeformation quantity of the derrick in the subsea and further obtaining practical deformation quantity of all subareas, thereby obtaining derrick stress distribution. According to the method and the equipment, derrick detection efficiency can be improved, and derrick detection construction difficulty and danger coefficient are reduced.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of derrick detection, and in particular to a method and equipment for derrick detection based on an unmanned aerial vehicle. Background technique [0002] The derrick is a relatively complex large-scale metal steel frame structure, which plays an irreplaceable role in the oil field and oil production. The derrick has a large shape, high load-bearing capacity and strength requirements, and the harsh and complicated working environment of the oil field. Affected by various factors, many parts of the derrick have different degrees of corrosion and deformation. With the change of the well site, the derrick needs to be installed and moved continuously. This process increases the damage of the equipment and brings huge safety hazards to the production process. [0003] In order to ensure the safe operation of oil drilling rigs in the oil production process, stress testing the derrick is ...

AI Technical Summary

Problems solved by technology

At present, the strain gauge electrical measurement method is generally used. However, with the increase of the detection workload of the derrick, the continuous consumption of the strain gauge and the rising cost

This detection method is also restricted by the weather environment. Even if waterproof measures are taken for the strain gauges, the damage rate of the strain gauges is still higher than that of the detection results in sunny weather.

At the same time, the derrick inspection belongs to the high-altitude operation, and the equipment is running at high pressure and high speed during the inspection, so the construction is difficult and the risk factor is high.

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