AMINEH, Reza Khalaj,DONDERICI, Burkay,SAN MARTIN, Luis Emilio
申请号：
WO2017US35774
公开号：
WO2018222209(A1)
申请日:
2017.06.02
申请国别(地区):
世界知识产权组织国际局
年份:
2018
代理人:
摘要：
Systems and methods for corrosion detection of downhole tubulars. A method may include disposing an electromagnetic logging tool in a wellbore, wherein the electromagnetic logging tool may comprise a transmitter and a receiver; making a first measurement with the electromagnetic logging tool in a first nominal section of the wellbore, wherein the first nominal section may comprise M pipes, wherein M may be a number of pipes positioned in the first nominal section; making a second measurement with the electromagnetic logging tool in a second nominal section of the wellbore, wherein the second nominal section may comprise N pipes, wherein N may be a number of pipes in the second nominal section, wherein N may be different than M; calculating a phase difference between the first and second measurements; calculating a thickness difference between the first and second measurements; calculating a first slope from at least the phase difference and the thickness difference; making a third measurement in a non-nominal
