COMPOSITIONS AND METHODS FOR CEMENTING A WELLBORE USING MICROBES OR ENZYMES
First Claim
Patent Images
1. A method of cementing a wellbore penetrating a subterranean formation, the method comprising:
- injecting into the wellbore a settable slurry comprising;
an aqueous carrier;
an aggregate;
urea;
a calcium ion source; and
a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing; and
allowing the slurry to set.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of cementing a wellbore penetrating a subterranean formation comprises injecting into the wellbore a settable slurry comprising: an aqueous carrier; an aggregate; urea; a calcium source; and a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing; and allowing the slurry to set.
8 Citations
23 Claims
-
1. A method of cementing a wellbore penetrating a subterranean formation, the method comprising:
-
injecting into the wellbore a settable slurry comprising;
an aqueous carrier;
an aggregate;
urea;
a calcium ion source; and
a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing; andallowing the slurry to set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A settable slurry for cementing a wellbore penetrating a subterranean formation, the composition comprising:
-
an aqueous carrier; an aggregate which comprises sand, gravel, crushed stone, slag, recycled concrete, silica, grass spheres, limestone, feldspar, or a combination comprising at least one of the foregoing aggregate; urea; a calcium ion source; and a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing; wherein the settable slurry comprises solids in an amount of about 50 wt. % to about 95 wt. % based on the total weight of the slurry. - View Dependent Claims (18, 19, 20, 21, 22, 23)
-
Specification