Collaborative detection and on-line monitoring of pipeline stress in oil and gas stations

Abstract

The pipeline type of the oil and gas station is diverse, and the single detection method is difficult to comprehensively and accurately measure the pipeline stress. According to the characteristics of each detection method, non-contact pipeline magnetic detection(NPMD), metal magnetic memory(MMM), ultrasonic stress measurement (USM), and ultrasonic thickness measurement (UTM), which constitutes the collaborative detection strategy of station pipelines. According to the sensors arrangement of the non-contact pipeline magnetic detection device, the pipeline magnetic abnormal evaluation parameter N is derived. The magnetic field distribution based on the different extraction height determined by the magnetic charge model and the experimental results, and constructs a feature parameter E which can characterize the degree of stress concentration. The pipeline stress concentration points can be quickly determined in accordance with N and E. Reference stress values can be measured using ultrasonic stress measurement and ultrasonic thickness measurement. Monitoring is implemented at the stress concentration points, and the true stress value at the stress concentration points of the pipeline is established by combining the stress detection results. The application is performed in an oil and gas station, and the collaborative detection method identified two stress concentrations of 186.7 MPa and 211.6 MPa, respectively. The stress at this point in the excavation pit one is confirmed to be 196MPa based on the monitoring data. Based on collaborative detection and on-line monitoring, fast and efficient collaborative detection and real-time mastering of station pipeline stress are achieved.

Log specification and intelligent analysis method based on oil and gas pipeline SCADA system

“…In turn, it searches for the evolution law from the accident development process and provides effective probability data support for the development of emergency response plans for the occurrence of oil and gas storage and transportation accidents. Literature [18] argues that the diversity of pipeline types in oil and gas stations makes it impossible to carry out stress detection in a single form, and thus, it is necessary to formulate a comprehensive parallel detection strategy to enhance the accuracy of the detection of oil and gas pipelines. Magnetic charge modeling was used to measure pipelines in different magnetic fields, resulting in more accurate stress test results.…”

An Analytical Method for Mechanical Analysis of Offshore Pipelines during Lifting Operation

“…Pipeline stress is a significant mechanical property parameter during offshore pipeline construction [49][50][51]. In severe cases, high stress can lead to plastic deformation and even fracturing of the pipeline.…”

“…At this position, the shear stress is 0, and the radial and hoop stresses are provided by the pressures inside and outside the pipeline. The axial, radial, and hoop stresses can be written as the following forms: Pipeline stress is a significant mechanical property parameter during offshore pipeline construction [49][50][51]. In severe cases, high stress can lead to plastic deformation and even fracturing of the pipeline.…”

Experimental study on strengthening the magneto-mechanical coupling effect of X80 steel by weak magnetic excitation

“…This method is difficult to perform long-distance detection along the pipeline [8,9]. The magnetic stress testing method has the advantages of non-contact measurement and long-distance rapid detection with advantages in the field of long-distance rapid detection along pipelines [10,11].…”