Electromagnetic source integrated into an element of a well casi

Details Electromagnetic source integrated into an element of a well casi Electromagnetic source integrated into an element of a well casi

1990-10-31

1993-08-03

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

166 665, 166242, 324333, 324339, 324346, G01V 328, E21B 4900, E21B 4100

Patent

active

052333043

ABSTRACT:
Electromagnetic source intended to be placed permanently in a drill well for studying the electromagnetic properties of the geological formations or of the fluids surrounding the well. This source consists of a coil through which a high current is circulated and which is of a diameter of the order of magnitude of the diameter of the well and is integrated in one of the elements of the casing produced at least partially from a resistant material in which the coil is embedded. This source can either be activated directly by a conductor shoe moving along in the well or be connected to a supply by means of cables.

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patent: 4802534 (1989-02-01), Larson et al.
patent: 4901023 (1990-02-01), Vail, III
patent: 4933640 (1990-06-01), Kuckes

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