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US 9,845,422 B2Granted
Methods of delivering calcium carbonate producing microbes or enzymes downhole
AssigneeBaker Hughes, A Ge Company, LLC
InventorsMichael B. Wilson, Mark A. Vorderbruggen, Charles David Armstrong
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Abstract
A method of delivering a microbe or enzyme to a selected location comprises conveying a coated aggregate to a selected location; wherein the coated aggregate comprises an aggregate and a coating disposed on the aggregate; the coating comprising a polymer matrix and a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing.
Claims23
A method of delivering a microbe or enzyme to a selected location, the method comprising:
- conveying a coated aggregate to a selected location;
- the coated aggregate comprising an aggregate and a coating disposed on the aggregate;
- the coating comprising a polymer matrix and a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing;
- releasing the calcium carbonate producing agent from the coating;
- and
- contacting the released calcium carbonate producing agent with urea, a calcium ion source, and water.
3 more elements
Dependencies are inferred from the claim text.