Biogenic fuel gas generation in geologic hydrocarbon deposits

Wells – Processes – Using microorganisms

Reexamination Certificate

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C166S266000, C166S272600, C166S303000, C166S371000

Reexamination Certificate

active

07975762

ABSTRACT:
A method of increasing biogenic production of a combustible gas from a subterranean geologic formation is described. The method may include extracting formation water from the geologic formation, where the extracted formation water includes at least a first species and a second species of microorganism. The method may also include analyzing the extracted formation water to identify the first species of microorganism that promotes the biogenic production of the combustible gas. An amendment may be introduced to the formation water to promote the growth of the first species of microorganism, and the biological characteristics of the formation water may be altered to decrease a population of the second species in the geologic formation.

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