(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