Application Type
Patent
Application SubType
PCT National Phase
(10) Registration Number and Date
BNN20180105 10.12.2019
Status
Registered
(180) Expiration Date
(20) Filing Number and Date
BN N/2018/0105 24.05.2017
(40) Publication Number and Date
BN N/2018/0105
A
10.12.2019
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
GB 1614227.5
19.08.2016
GB 1609137.3
24.05.2016
(51) IPC Classes
(72) Inventor
(EN) UNDERWOOD, Lance : c/o 713 Cavendish Avenue Birchwood, Warrington Cheshire WA3 6DE
(74) Representative Name
(EN) Ahmad Isa & Partners : Unit Nos. 404A-410A 4th Floor, Wisma Jaya Jalan Pemancha Bandar Seri Begawan BS8811
(54) Title
(EN) COMBINED WELL PLUG/CHEMICAL HEATER ASSEMBLIES FOR USE IN DOWN-HOLE OPERATIONS AND ASSOCIATED HEATER CARTRIDGES
(57) Abstract
(EN) --
The present invention provides a cartridge (1) for a chemical heater used in down-hole operations. The cartridge (1) comprises a quantity of a chemical reaction heat source (2) wrapped in a temporary coating (3) that is capable of maintaining the shape of the cartridge (1) prior to use but which is consumed during the burn of the heater. The present invention also provides a eutectic/bismuth based alloy well plugging/sealing tool (5). The tool (5) having a tubular heater body (6) with an internal cavity (
(58) Citations