Search International and National Patent Collections

1. (WO2018204051) LOGGING WITH SELECTIVE SOLIDIFICATION OF ANNULAR MATERIAL

Pub. No.:    WO/2018/204051    International Application No.:    PCT/US2018/027487
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Apr 14 01:59:59 CEST 2018
IPC: H01F 1/44
E21B 47/005
B06B 1/00
C09K 8/50
Applicants: CONOCOPHILLIPS COMPANY
Inventors: CROMAR, Stephen
MILNE, Ian
Title: LOGGING WITH SELECTIVE SOLIDIFICATION OF ANNULAR MATERIAL
Abstract:
Systems and methods of logging in a well include utilizing a solidifying fluid, such as magnetorheological fluid, in at least one annulus surrounding a logging tool. Given production tubing may remain in the well during the logging as desired for efficiency, space between the production tubing and a casing string may form the annulus. Filling the annulus with the solidifying fluid and selective activation of the solidifying fluid to a solidified state during the logging limits interference in data collected as a result of transmitting across the annulus. Deactivation of the solidifying fluid to a liquefied state enables recovery of the solidifying fluid from the well after the logging. Embodiments employ the logging in various applications, such as assessing a cemented casing string in well abandonment operations.