(19)
(11) EP 0 866 951 A1

(12)

(43) Date of publication:
30.09.1998 Bulletin 1998/40

(21) Application number: 96945923.0

(22) Date of filing: 05.12.1996
(51) International Patent Classification (IPC): 
E21B 23/ 03( . )
G01F 1/ 36( . )
E21B 47/ 10( . )
G01F 1/ 40( . )
(86) International application number:
PCT/US1996/019298
(87) International publication number:
WO 1997/021077 (12.06.1997 Gazette 1997/25)
(84) Designated Contracting States:
FR GB IE

(30) Priority: 07.12.1995 US 19950608353

(71) Applicant: PANEX CORPORATION
Sugar Land, Texas 77478 (US)

(72) Inventor:
  • DELATORRE, Leroy, C.
    Sugar Land, TX 77478 (US)

(74) Representative: Abbie, Andrew Kenneth, et al 
R.G.C. Jenkins & Co. 26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)

   


(54) DIFFERENTIAL PRESSURE MEASUREMENT SYSTEMS FOR FLUID STREAMS