The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Nov. 19, 2018
Applicant:
Weatherford U.k. Limited, Leicestershire, GB;
Inventors:
Neil Anderson, Aberdeen, GB;
Michael Ronson, Aberdeen, GB;
Assignee:
Weatherford U.K. Limited, Leicestershire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/12 (2006.01); E21B 33/13 (2006.01); E21B 37/00 (2006.01); E21B 34/14 (2006.01); E21B 17/22 (2006.01); E21B 23/00 (2006.01); E21B 33/126 (2006.01); E21B 33/14 (2006.01); E21B 43/116 (2006.01);
U.S. Cl.
CPC ...
E21B 37/00 (2013.01); E21B 17/22 (2013.01); E21B 23/004 (2013.01); E21B 33/12 (2013.01); E21B 33/126 (2013.01); E21B 33/13 (2013.01); E21B 33/14 (2013.01); E21B 34/142 (2020.05); E21B 43/116 (2013.01); E21B 2200/06 (2020.05);
Abstract
Some examples of the present disclosure relate to a method for washing an annulus that at least partially surrounds a casing in a well. The method comprises locating a tool inside a wellbore casing, and flowing a washing fluid from an injection aperture on the tool and into the annulus via a first casing aperture in the casing. An inflow region of the casing is created having a reduced pressure relative to the annulus, and the method involves flowing the washing fluid from the annulus and into the inflow region of the casing through a second casing aperture in the casing.