Ultrasonic pig for submarine oil pipeline corrosion inspection

Lei, Haozhi; Huang, Zhiyong; Wang, Liang; Mao, Yuanqing; Que, Peiwen

doi:10.1134/s106183090904010x

Cited by 27 publications

(25 citation statements)

References 15 publications

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“…When r s is taken to the r j , (3) is discretized according to (4), and then we can get (5). We can use the numerical methods to calculate the distribution of the magnetic charge density s mj for B m at any point on the surface of the spiral steel pipe and the distribution of magnetic charge density s pj for B p at any point on the surface of the band steel.…”

Section: Methods Of Analyzingmentioning

confidence: 99%

“…For the discretized distribution of the magnetic charge density, according to (4) and (6), the magnetic intensity and the magnetic flux density at an arbitrary point inside or outside the spiral pipe can be expressed as (7)-(10), wherein r j denotes the position vector of the jth surface element on the spiral pipe surface. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 ...…”

Section: Methods Of Analyzingmentioning

confidence: 99%

“…Smart PIG (Pipelines Inspection Gauge) [1][2][3][4] and smart ball [5] are multi-parameter in-pipe detectors used most widely for such detection of pipelines' early defects and damages. Because there is a strict one-to-one correspondence between the pipeline defect measured by the in-pipe detector and the position of the pipeline or the detector, we have to calculate accurately the position of the detector in pipelines on every moment.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analyses of magnetic field in spiral steel pipe

Huang

Chen

Guo

et al. 2015

Journal of Magnetism and Magnetic Materials

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Section: Methods Of Analyzingmentioning

confidence: 99%

Section: Methods Of Analyzingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analyses of magnetic field in spiral steel pipe

Huang

Chen

Guo

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…These constants are evaluated from in-field measurements and come from fits to corresponding data. These measurements to yield such data, as well as the experimental estimation of corrosion rates, are usually carried out with periodical in-line inspections.Most in-line inspections are carried out by means of Pipelines Inspection Gauges (PIGs) based on ultrasound [33][34][35] . However, ultrasound requires a coupling medium, such as oil, and therefore these inspections are mainly applied to liquid lines and not for gas pipelines.…”

mentioning

confidence: 99%

“…Most in-line inspections are carried out by means of Pipelines Inspection Gauges (PIGs) based on ultrasound [33][34][35] . However, ultrasound requires a coupling medium, such as oil, and therefore these inspections are mainly applied to liquid lines and not for gas pipelines.…”

mentioning

confidence: 99%

Depicting corrosion-born defects in pipelines with combined neutron/γ ray backscatter: a biomimetic approach

Licata

Aspinall

Bandala

et al. 2020

Sci Rep

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The identification of corrosion, cracks and defects in pipelines used for transporting oil and gas can reduce the possibility of leaks, and consequently, it can limit the extent of an environmental disaster, public hazard and the associated financial impact of such events. Typically, corrosion in oil pipelines is measured with non-destructive ultrasonic or electromagnetic techniques, on the basis that corrosion and defects are often manifest as a change of thickness in the steel from which pipelines are made. However, such approaches are not practical for underground pipelines and their deployment can be complicated for the case of pipelines covered by insulation. in this paper, we present an innovative, non-destructive testing technique, which exploits the backscatter of a combination of fast-neutron and γ radiation from steel samples of a variety of thicknesses consistent with changes that might arise due to corrosion of a pipe wall. our research demonstrates the potential to measure and characterise different steel thicknesses by detecting both the elastic, fast-neutron backscatter and the Comptonscattered γ radiations, simultaneously. further, we demonstrate that the presence of insulation yields a consistent and separable influence on the experimental, wall-thickness measurements. The data from experimental measurements are supported by a comprehensive Monte carlo computer simulation study.The processes by which mechanical and electromagnetic waves are reflected by materials, are phenomena exploited by a variety of animal species for orientation, to procure food and for a great diversity of other purposes. A biomimetic relationship exists in this regard between the natural world and technological human achievements, exemplified on the one hand by the reliance of some species of mammals (predominantly bats) on ultrasound, with which to hunt, avoid predators and even to classify different types of plants 1-5 , and on the other by sonar 6 . The latter is central to a wide variety of non-destructive, industrial assessment techniques and a related international industry, such as the measurement of distance, density, porosity and imaging. Similar analogies exist for the case of reflected electromagnetic waves, e.g., sight, radar 7 etc.Amongst the first observations of the scattering of particles are those of Rutherford in his famous gold foil experiments (1908)(1909)(1910)(1911)(1912)(1913). At the atomic scale, the reflections of waves and particles approach one another phenomenologically, and offer one of the founding scientific observations supporting wave-particle duality. In this regard, neutron scattering and its applications are perhaps amongst the most remarkable and tangible exemplars of quantum-mechanics. As to whether a scattering process is elastic or inelastic is inferred by the corresponding isotopic cross section, calculated on the basis of neutrons affording properties of complex plane waves. Below the MeV range in energy, the radiation wavelength is much greater than the range of the strong nuclea...

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