Study of through-tubing casing inspection techniques utilizing electromagnetic flaw detection technology

With the escalating demand for oil and gas resources, the safety of subterranean casings and other petroleum extraction infrastructure is increasingly under scrutiny. Traditional electromagnetic flaw detection methods assess the corrosion or damage to both the inner and outer layers of casings through calculations of wall thickness. In this study, MMS360 magnetic scanning technology is explored, building upon conventional electromagnetic flaw detection approaches. The research introduces an innovative symmetric layout for similar-pole magnetic field coils, leading to the development of a radial magnetic scanning system. Field tests have effectively confirmed the reliability and precision of the MMS360 magnetic scanning technology.