SYSTEM AND METHOD FOR DETERMINING AXIAL MAGNETIC INTERFERENCE IN DOWNHOLE DIRECTIONAL SENSORS

Title:

SYSTEM AND METHOD FOR DETERMINING AXIAL MAGNETIC INTERFERENCE IN DOWNHOLE DIRECTIONAL SENSORS

Document Type and Number:

WIPO Patent Application WO/2020/086884

Kind Code:

A3

Abstract:

Systems and methods for the measurement of geomagnetic field and an axial magnetic interference field using a directional sensor at a survey point are described. Generally, the directional sensor is used to make axial magnetic field measurements at three or more separate locations inside the directional sensor along the sensor tool axis. A computing system receives the axial magnetic field measurements and solves a set of simultaneous equations to obtain the axial component of the geomagnetic field.

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Inventors:

WU JIAN-QUN (US)
ROITBERG LEE JACOBO JOSE (US)

Application Number:

PCT/US2019/057919

Publication Date:

March 25, 2021

Filing Date:

October 24, 2019

Export Citation:

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Assignee:

BENCH TREE GROUP LLC (US)

International Classes:

E21B47/022; E21B41/00; G01C17/30

Domestic Patent References:

WO2007098204A1

2007-08-30

Foreign References:

US20130282287A1	2013-10-24
US6321456B1	2001-11-27
US20030014873A1	2003-01-23
US5623407A	1997-04-22

Attorney, Agent or Firm:

BROCKHAUS, Marc (US)

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