DOWNHOLE APPARATUS AND METHODS

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EP 3 559 400 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	22.03.2023 Bulletin 2023/12

(45)	Mention of the grant of the patent:
	01.02.2023 Bulletin 2023/05

(21)	Application number: 17822758.3

(22)	Date of filing: 21.12.2017

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International Patent Classification (IPC):

E21B 34/08^(2006.01)
E21B 34/00^(2006.01)

E21B 34/10^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	E21B 34/08; E21B 34/103; E21B 2200/05

(86)	International application number:
	PCT/GB2017/053853

(87)	International publication number:
	WO 2018/115882 (28.06.2018 Gazette 2018/26)

(54)	DOWNHOLE APPARATUS AND METHODS BOHRLOCHVORRICHTUNG UND -VERFAHREN APPAREIL DE FOND DE TROU ET PROCÉDÉS

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

23.12.2016 GB 201622213

(43)	Date of publication of application:
	30.10.2019 Bulletin 2019/44

(73)	Proprietor: CORETRAX GLOBAL LIMITED
	Aberdeen AB12 4YA (GB)

(72)	Inventor:
	CHURCHILL, Andrew Philip Cove Aberdeen AB12 3RY (GB)

(74)	Representative: Shanks, Andrew
	Andrew Shanks IP Limited 3 Westbourne Gardens Glasgow G12 9XD Glasgow G12 9XD (GB)

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References cited: :

WO-A1-2016/133541
US-A- 3 071 151
US-A- 3 826 309
US-A1- 2016 138 365

WO-A2-2006/000799
US-A- 3 749 119
US-A1- 2013 075 111

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).