Surfactant amendments for the stimulation of biogenic gas...

E - Fixed Constructions – 21 – B

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E21B 43/22 (2006.01)

Patent

CA 2756880

Methods of conditioning a carbonaceous material in a subterranean geologic formation for metabolism into a compound with enhanced hydrogen content by a microorganism consortium are described. The methods may include the steps of accessing the subterranean geologic formation through an access point, and contacting the carbonaceous material with a surfactant. The microorganism consortium can utilize the surfactant as a first nutrient source. The surfactant also increases accessibility of the carbonaceous material as a second nutrient source for the microorganism consortium. The microorganism consortium metabolizes the carbonaceous material into the compound with the enhanced hydrogen content.

L'invention porte sur des procédés de conditionnement d'une matière carbonée dans une formation géologique souterraine en vue d'un métabolisme pour donner un composé dont la teneur est accrue en hydrogène par un consortium de microorganismes. Les procédés peuvent consister à accéder à la formation géologique souterraine à travers un point d'accès, et à mettre en contact la matière carbonée avec un agent tensio-actif. Le consortium de microorganismes peut utiliser l'agent tensio-actif sous forme de première source de nutriment. L'agent tensio-actif améliore également l'accessibilité de la matière carbonée sous forme d'une seconde source de nutriment pour le consortium de microorganismes. Le consortium de microorganismes métabolise la matière carbonée pour donner le composé dont la teneur est accrue en hydrogène.

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