Underground sleeve demagnetizer

The utility model relates to a device which can eliminate the residual magnetism of an underground sleeve in the production of an oil field, in particular to an underground sleeve demagnetizer which comprises a shell, a cable, an upper connector and a lower connector; the shell is internally and fix...

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Bibliographic Details
Main Authors HUA BAOXIANG, BIAN KEXIN, LI JIHUA, PENG YUANPING, HU XIONGMING, XING SHANJUN, WANG JIEYI
Format Patent
LanguageChinese
English
Published 09.12.2009
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:The utility model relates to a device which can eliminate the residual magnetism of an underground sleeve in the production of an oil field, in particular to an underground sleeve demagnetizer which comprises a shell, a cable, an upper connector and a lower connector; the shell is internally and fixedly provided with a demagnetizing coil; the upper end of the shell is connected with the lower end of the upper connector; the lower end of the shell is connected with the upper end of the lower connector; the electric output end of the cable is electrically connected with the input end of the demagnetizing coil; and the electric input end of the cable is electronically connected with the output end of a demagnetizing power supply. The underground sleeve demagnetizer has reasonable and compact structure and convenient use, can measure the signal of a sectional hoop instrument during the ascending process as eliminating the residual magnetism of the underground sleeve during the descending process, thus ensuring th
Bibliography:Application Number: CN20092301032U