Drillable well bore packing apparatus

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(11)

EP 0 454 466 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	21.10.1992 Bulletin 1992/43

(43)	Date of publication A2:
	30.10.1991 Bulletin 1991/44

(21)	Application number: 91303763.6

(22)	Date of filing: 25.04.1991

(51)	International Patent Classification (IPC)⁵: E21B 33/129, E21B 33/134, E21B 29/00

(84)	Designated Contracting States:
	AT DE FR GB IT NL

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Priority:

26.04.1990 US 515019

(71)	Applicant: HALLIBURTON COMPANY
	Duncan Oklahoma 73536 (US)

(72)	Inventors:
	Streich, Steven G. Duncan, Oklahoma 73533 (US) Hushbeck, Donald F. Duncan, Oklahoma 73533 (US)

(74)	Representative: Wain, Christopher Paul et al
	A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE London WC1V 7LE (GB)

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References cited: :

(54)	Drillable well bore packing apparatus

(57) A downhole well bore packing apparatus (eg. a packer or bridge plug) includes a component which bears compressive loading and is made of plastics material. Such components can be lock ring housings (24), slips (28,54), slip wedges (32,46) or slip supports (24,58) for example. After use of the packing apparatus downhole, it can be relatively easily drilled out.

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