Patent · US Active

Corkscrew effect reduction on borehole induction measurements

US9798036B2 · kind B2 · utility

0Cited by

3References

21Claims

0Family size

Assignee

Halliburton Energy Services, Inc. · US

Inventors

Ameet B. Agnihotri · Cypress, US
Junsheng Hou · Kingwood, US

Key dates

Filing date	Jan 20, 2016
Grant date	Oct 24, 2017
Priority date	—
Expiry date	Jan 20, 2036

Classification

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

Abstract

In some embodiments, a multi-array induction method uses user selectable zoning of a borehole to generate an updated look-up table for borehole corrections based on averaged calipers for the borehole. One example method averages caliper data, defines a good zone of the borehole substantially unaffected by corkscrew borehole effect, defines a start depth and an end depth of a zone of the borehole affected by the corkscrew borehole effect, and averages the caliper data for each coil array to generate updated resistivity outputs RO, Rt, and Rf for further drilling of the borehole.

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