Protein hydrolysate composition that increases coalbed methane production
OwnerBomi Patel-Framrozeinventor
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Abstract
This invention provides a composition and a method for increasing biogenic methane gas production from subterranean coal deposits. The composition and method provides a nutrient protein hydrolysate that contains less than 0.5 percent of the amino acid L-tyrosine, which is most effective in significantly increasing methane gas released from subterranean coal deposits.
Claims4
A method comprising contacting methanogenic microorganisms in a subsurface coal formation with a composition of amino acids wherein the amino acid L-tyrosine is less than 0.5 percent by weight to weight of the total amino acids present in the composition, and wherein the composition of amino acids is produced by a enzymatic hydrolysis of protein using enzymes selected from the group consisting of bromelain, papain, leucine aminopeptidase and glycine carboxypeptidase.
A method of increasing methane gas production from a subsurface coal formation by contacting said coal formation with a composition of amino acids wherein the amino acid L-tyrosine is less than 0.5 percent by weight to weight of the total amino acids present in the composition, and wherein the composition of amino acids is produced by enzymatic hydrolysis of protein using enzymes selected from the group consisting of bromelain, papain, leucine aminopeptidase and glycine carboxypeptidase.
Dependencies are inferred from the claim text.