scholarly journals Observations on Characterization of Defects in Coiled Tubing From Magnetic-Flux-Leakage Data

2006 ◽  
Author(s):  
Timothy R. McJunkin ◽  
Karen S. Miller ◽  
Charles R. Tolle
Keyword(s):  
Magnetic Flux ◽  
Magnetic Flux Leakage ◽  
Coiled Tubing ◽  
Flux Leakage

Characterization of Defects on Ferromagnetic Tubes Using Magnetic Flux Leakage

2019 ◽  
Vol 55 (5) ◽  
pp. 1-10 ◽  
Author(s):  
V. Suresh ◽  
A. Abudhahir ◽  
Jackson Daniel
Keyword(s):  
Magnetic Flux ◽  
Magnetic Flux Leakage ◽  
Flux Leakage

Characterization of Mechanical Damage Through Use of the Tri-Axial Magnetic Flux Leakage Technology

2006 ◽  
Author(s):  
Vanessa Co ◽  
Scott Ironside ◽  
Chuck Ellis ◽  
Garrett Wilkie
Keyword(s):  
Magnetic Flux ◽  
Mechanical Damage ◽  
Magnetic Flux Leakage ◽  
Metal Loss ◽  
Field Investigations ◽  
Non Destructive ◽  
Flux Leakage

Management of mechanical damage is an issue that many pipeline operators are facing. This paper presents a method to characterize dents based on the analysis of the BJ Vectra Magnetic Flux Leakage (MFL) tool signals. This is an approach that predicts the severity of mechanical damage by identifying the presence of some key elements such as gouging, cracking, and metal loss within dents as well as multiple dents and wrinkles. Enbridge Pipelines Inc. worked with BJ Services to enhance the knowledge that can be gained from MFL tool signals by defining tool signal subtleties in dents. This additional characterization provides information about the existence of gouging, metal loss, and cracking. This has been accomplished through detailed studies of the ILI data and follow-up field investigations, which validate the predictions. One of the key learnings has been that the radial and circumferential components of the MFL Vectra tool are highly important in the characterization and classification of mechanical damage. Non-destructive examination has verified that predictions in detecting the presence of gouging and cracking (and other defects within dents based on tool signals) have been accurate.

Operator Assessment of ILI Defects

2006 ◽  
Author(s):  
Kevin W. Ferguson
Keyword(s):  
High Resolution ◽  
Magnetic Flux ◽  
Effective Area ◽  
Magnetic Flux Leakage ◽  
Burst Pressure ◽  
Final Report ◽  
Allocation Of Resources ◽  
Flux Leakage

With the age of the original Panhandle Eastern Pipeline (PEPL) Company pipelines, it’s not a matter of if anomalies will be found when an ILI tool is run, it’s a matter of how many and how severe. When a final report is received from an ILI vendor, burst pressures are typically calculated using Modified B31G, 0.85dL. The results can seem unmanageable, but success has been had doing further assessments on some anomalies without excavating them all. This assessment has been developed and performed by PEPL on three sets of Tuboscope ILI data and one set of Baker Hughes CPIG data. The method to be discussed was first employed in 2002. It provides a more accurate characterization of the defect and provides the company the ability to more effectively allocate resources. Efforts have been made to review the color scan of a vendor’s raw High Resolution Magnetic Flux Leakage (HRMFL) data, and perform an assessment using Effective Area Analysis without excavating hundreds of anomalies that prove no threat to the pipeline. This assessment is done by hand on the computer and in many cases returns a burst pressure higher than that calculated using Modified B31G, 0.85dL. The following is a case study that shows how multiple defects have been assessed prior to excavation in an attempt to more accurately characterize the defect, and allow for a better allocation of resources. Digs have been performed to validate the process, and the results will be discussed.

Novel Application of Magnetic Flux Leakage-Based Technology Validating Pipe Elongation in Coiled Tubing Drilling Operation

2020 ◽  
Author(s):  
Kevin Wiranata ◽  
Arafet Ridene ◽  
Mohd Nur Afendy Md Yusoff ◽  
Abdullah Hamdi ◽  
Rodrigo Sa ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Magnetic Flux Leakage ◽  
Drilling Operation ◽  
Coiled Tubing ◽  
Flux Leakage
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