(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