Patent · US Active

Focused array laterolog tool

US9239402B2 · kind B2 · utility

5Cited by
9References
26Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 3, 2012
Grant dateJan 19, 2016
Priority date—
Expiry dateJan 3, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01V99/00
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Various embodiments include apparatus and methods to make resistivity measurements in a borehole using tool having an array of electrodes operable to provide focused currents and measure corresponding voltages to determine resistivity. Tools can be configured with a main electrode having a number of spaced apart electrodes within the main electrode such that the spaced apart electrodes are arranged azimuthally with respect to an axis of the tool. Generation of current from the spaced apart electrodes and control of current from additional electrodes on each side of the main electrode can provide for focused measurements. Additional apparatus, systems, and methods are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.