(19)
(11)
EP 0 238 535 A1
(12)
(43)
Date of publication:
30.09.1987
Bulletin 1987/40
(21)
Application number:
86905447.0
(22)
Date of filing:
17.09.1986
(51)
International Patent Classification (IPC):
E21B
43/
34
( . )
F17D
3/
14
( . )
(86)
International application number:
PCT/NO1986/000065
(87)
International publication number:
WO 1987/001759
(
26.03.1987
Gazette 1987/07)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE
(30)
Priority:
18.09.1985
NO 19850003656
(71)
Applicant:
STIFTELSEN FOR INDUSTRIELL OG TEKNISK FORSKNING VED NTH, (SINTEF)
N-7034 Trondheim-NTH (NO)
(72)
Inventor:
ASHEIM, Harald, Are
N-7000 Trondheim (NO)
(74)
Representative:
Ford, Michael Frederick, et al
Barlow, Gillett & Percival 94 Market Street
Manchester M1 1PJ
Manchester M1 1PJ (GB)
(54)
SLUG-CATCHER THAT CAN BE PIGGED