Application Type
Patent
Application SubType
PCT National Phase
(10) Registration Number and Date
BNN20200041 19.05.2020
Status
Registered
(180) Expiration Date
(20) Filing Number and Date
BN N/2020/0041 19.11.2018
(40) Publication Number and Date
BN N/2020/0041
A
19.05.2020
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
GB 1719216
20.11.2017
(71/73) Applicant
(72) Inventor
(EN) ANDERSON, Neil
(EN) RONSON, Michael
(74) Representative Name
(EN) Ahmad Isa & Partners : Unit Nos. 404A-410A 4th Floor, Wisma Jaya Jalan Pemancha Bandar Seri Begawan BS8811
(54) Title
(EN) METHOD AND APPARATUS FOR WASHING AN ANNULUS
(57) Abstract
(EN)
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.
(58) Citations