E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/00 (2006.01) E21B 47/026 (2006.01) E21B 47/12 (2006.01) E21B 49/08 (2006.01) G01V 3/18 (2006.01) G01V 3/30 (2006.01)
Patent
CA 2499045
An azimuthally sensitive logging while drilling tool is disclosed.The tool may be suitable, for example, to measure azimuthal variations of electrical properties of a subterranean formation. The tool includes at least one transmitter disposed to transmit electromagnetic energy and a longitudinally spaced receiver array. The receiver array includes a plurality of discrete magnetic field sensors deployed about a circumference of the tool body. In one exemplary embodiment, the tool includes six or more magnetic field sensors selected from either giant magnetoresistive sensors or anisotropic magnetoresistive sensors.
Borden Ladner Gervais Llp
Pathfinder Energy Services Inc.
Smith International Inc.
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