DOWNHOLE TIME-DOMAIN PULSED ELECTROMAGNETIC METHOD FOR DETECTING RESISTIVITY OF STRATUM OUTSIDE METAL CASED PIPE

A method for detecting formation resistivity outside of metal casing using borehole time-domain electromagnetic pulse including steps of a) providing a borehole large power pulse transmitting source, recording an induced electromotive force µ, and full time digital recording a transmitted waveform a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG, JUNMIN, SU, ZHULIU, LIU, DIREN, CHEN, QINGLI, XIANG, KUI, YAN, LIANGJUN, XU, ZHENPING, LUO, MINGZHANG, TANG, XINGONG, HU, WENBAO, MAO, YURONG, XIE, XINGBING
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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