(19)
(11) EP 0 935 050 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.05.2001 Bulletin 2001/20

(43) Date of publication A2:
11.08.1999 Bulletin 1999/32

(21) Application number: 99300812.7

(22) Date of filing: 03.02.1999
(51) International Patent Classification (IPC)7: E21B 17/10, E21B 43/26
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 05.02.1998 US 18922

(71) Applicant: Halliburton Energy Services, Inc.
Dallas, Texas 75381-9052 (US)

(72) Inventors:
  • Echols, Ralph H.
    Dallas, Texas 75287 (US)
  • Scott, Keith W.
    Farmersville, Texas 75442 (US)
  • Presley, Rex D.
    Ben Wheeler, Texas 75754 (US)

(74) Representative: Wain, Christopher Paul et al
A.A. Thornton & Co. 235 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)

   


(54) Wear resistant crossover


(57) A wear resistant crossover comprising a generally tubular element having an axial passage therethrough, and at least one exit port located through an axial wall of said crossover, wherein said crossover is made of a material including a ceramic.






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