Magnetic Wall Loss In Plain English

Cover for Article EMI Wall Loss Detection In Plain English

Electromagnetic inspection (EMI) methods used to detect wall loss defects in ferrous oil field pipe are important to personnel safety at the wellhead.  These EMI techniques have become more common but possibly not well understood by inspection companies and the clients they serve.  Magnetic wall loss detection is a nondestructive testing method which uses a magnetic field to locate areas of the pipe body wall which are thinner than…

Read More

Electromagnetic Wall Loss Device Replaces Gamma Radiation Tool to Locate Localized Loss of Metallic Area (Wall Loss) in OCTG

Cover for article EMI replaces gamma radiation tool to locate wall loss in OCTG

Problem:  A serious misconception concerning the principles of two nondestructive testing methods and their use in the inspection of Oil Country Tubular Goods (OCTG), and drill pipe, seriously threatens the performance of casing, tubing and the drill string. The two NDT methods concerned are electromagnetics (EMI) and gamma radiation (RT-RAM). While using gamma radiation in an attempt to find rejectable loss of metallic area (LMA) in OCTG, many defects…

Read More

The Magical Magnetizing Coil

cover of article The Magical Magnetizing Coil

Magnetic nondestructive testing methods are widely used in the world of OCTG and drill pipe inspection. Magnetic inspection is a fast and effective way to detect a myriad of defects within ferrous pipe. Electromagnetic inspection (EMI) methods are some of the most common testing methods found in our segment of the industry. To maximize EMI’s potential, the field strength of the electromagnet used for EMI should be properly designed…

Read More