Patent · US Active

Method for placement of surface electrodes for electromagnetic telemetry

US10502860B2 · kind B2 · utility

1Cited by

6References

18Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Gaelle Jannin · Houston, US
Jiuping Chen · Albany, US
Andrew Brooks · Thiensville, US
David Kirk Conn · Houston, US
Luis Eduardo DePavia · Sugar Land, US
Liang Sun · Bellevue, US
Michael W. Schwartz · Houston, US
Richard E. Hunter · Greeley, US

Key dates

Filing date	Nov 3, 2016
Grant date	Dec 10, 2019
Priority date	—
Expiry date	Nov 3, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01V3/28
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for placement of electrodes includes determining spatial distribution of a signal caused by generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field comprises encoded measurements from at least one sensor associated with the instrument. Voltages induced by noise are measured across at least one pair of spaced apart electrodes placed at a plurality of positions spaced apart from a surface location of the wellbore. A spatial distribution of noise is estimated using the measured voltages. Positions for placement of at least two electrodes are selected using the spatial distribution of signal and the spatial distribution of noise.

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