(19)
(11) EP 1 627 243 A1

(12)

(43) Date of publication:
22.02.2006 Bulletin 2006/08

(21) Application number: 04752141.4

(22) Date of filing: 14.05.2004
(51) International Patent Classification (IPC): 
G01V 9/00(1968.09)
(86) International application number:
PCT/US2004/015038
(87) International publication number:
WO 2004/104639 (02.12.2004 Gazette 2004/49)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 16.05.2003 US 471465 P

(71) Applicant: Ellis, Leroy
Richardson, TX 75080 (US)

(72) Inventor:
  • Ellis, Leroy
    Richardson, TX 75080 (US)

(74) Representative: Bewley, Ewan Stuart 
Calle Pinotajos 7, Casa D. Urb. Los Pinos
Almunecar 18690 Granada
Almunecar 18690 Granada (ES)

   


(54) MUD GAS ISOTOPE LOGGING INTERPRETIVE METHOD IN OIL AND GAS DRILLING OPERATIONS