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Title: Method of placing magnetic markers on collarless cased wellbores

Abstract

This patent describes a method of marking a wellbore casing in a manner such that the mark can be subsequently detected by a casing collar locator comprising placing a horseshoe-shaped electromagnet adjacent to the casing and energizing the electromagnet producing a magnetic marker at a location between the poles of the electromagnet.

Inventors:
;
Publication Date:
OSTI Identifier:
5865986
Patent Number(s):
US 4572293
Assignee:
Standard Oil Co., (now)Amoco Corp., Chicago, IL
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 31 Aug 1984
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; WELL CASINGS; IDENTIFICATION SYSTEMS; ELECTROMAGNETS; MAGNET POLE PIECES; ELECTRICAL EQUIPMENT; EQUIPMENT; MAGNETS; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Wilson, J G, and Crawford, G J. Method of placing magnetic markers on collarless cased wellbores. United States: N. p., 1986. Web.
Wilson, J G, & Crawford, G J. Method of placing magnetic markers on collarless cased wellbores. United States.
Wilson, J G, and Crawford, G J. 1986. "Method of placing magnetic markers on collarless cased wellbores". United States.
@article{osti_5865986,
title = {Method of placing magnetic markers on collarless cased wellbores},
author = {Wilson, J G and Crawford, G J},
abstractNote = {This patent describes a method of marking a wellbore casing in a manner such that the mark can be subsequently detected by a casing collar locator comprising placing a horseshoe-shaped electromagnet adjacent to the casing and energizing the electromagnet producing a magnetic marker at a location between the poles of the electromagnet.},
doi = {},
url = {https://www.osti.gov/biblio/5865986}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 25 00:00:00 EST 1986},
month = {Tue Feb 25 00:00:00 EST 1986}
}