E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/24 (2006.01)
Patent
CA 2720951
Methods of generating subsurface heat for treatment of a hydrocarbon containing formation are described herein. Methods include providing steam to at least a portion of a hydrocarbon containing formation from a plurality of locations in a wellbore. The steam is hotter than a temperature of the portion. The steam is heated in the wellbore by combusting a stream comprising hydrogen sulfide in the wellbore. Heat from the combustion transfers to the steam. The steam provided the portion at a first location in the wellbore is hotter than steam provided at a second location in the wellbore along the length of the wellbore, where the first location is further from a surface of the formation than the second location along the length of the wellbore.
La présente invention concerne des procédés de génération de chaleur souterraine dune formation contenant des hydrocarbures. Les procédés comprennent la fourniture de vapeur à au moins une partie de la formation contenant des hydrocarbures à partir dune pluralité demplacements dans un trou de forage. La vapeur est plus chaude quune température de ladite partie. La vapeur est réchauffée dans le trou de forage par la combustion dun flux comportant du sulfure dhydrogène dans le trou de forage. La chaleur dérivée de la combustion est transférée à la vapeur. La vapeur fournie à la partie au niveau dun premier emplacement dans le trou de forage est plus chaude que la vapeur fournie à un second emplacement dans le trou de forage dans le sens longitudinal du trou de forage, le premier emplacement étant plus éloigné de la surface de la formation que le second emplacement dans le sens longitudinal du trou de forage.
Cui Jingyu
Joshi Mahendra Ladharam
Milam Stanley Nemec
Reynolds Michael Anthony
Wellington Scott Lee
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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