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US 2010/0148787 A1Published application
High Frequency or Multifrequency Resistivity Tool
OwnerMarian Morys, Sergei Knizhnik +1inventors
InventorsMarian Morys, Sergei Knizhnik, William Francis Gallagher, III
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Abstract
A system and method for determining material resistivity. A current of one or more frequencies is generated using a circuitry (225). The one or more frequencies is directed using one or more electrodes (215) into a surrounding material. The resistivity of the material surrounding the electrodes (215) and a drilling tool (210) is measured by detecting the current at the one or more frequencies.
Claims17
A method for resistivity logging, the method comprising:
- generating a current, the current oscillating at one or more frequencies, wherein at least one of the frequencies is above a critical frequency;
- directing the current through a surrounding material;
- and
- detecting the current and, in response thereto, determining a resistivity of the surrounding material at the one or more frequencies.
1 more element
An apparatus for resistivity logging, the apparatus comprising:
- a current generating device, the device being operable to generate a current oscillating at one or more frequencies, wherein at least one of the frequencies is above a critical frequency;
- one or more electrodes coupled to the generating device, the electrodes being adapted to direct current through a surrounding material;
- and
- an analysis device coupled to the one or more electrodes, the analysis device being operable to detect the current and determine a resistivity of the surrounding material.
1 more element
Dependencies are inferred from the claim text.