Canister, sealing method and composition for sealing a borehole
AssigneeThe Regents of the University of California
InventorsDonald W. Brown, Arun S. Wagh
Life of this patent
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Abstract
Canister, sealing method and composition for sealing a borehole. The canister includes a container with slurry inside the container, one or more slurry exits at one end of the container, a pump at the other end of the container, and a piston inside that pushes the slurry though the slurry exit(s), out of the container, and into a borehole. An inflatable packer outside the container provides stabilization in the borehole. A borehole sealing material is made by combining an oxide or hydroxide and a phosphate with water to form a slurry which then sets to form a high strength, minimally porous material which binds well to itself, underground formations, steel and ceramics.
Claims14
A canister for placing a slurry in a borehole comprising:
- (a) a container having a first end, a second end, and an inner container wall;
- (b) a pump attached to said first end of said container;
- (c) a slurry that forms a sealant for sealing the borehole after exiting said container;
- (d) at least one slurry exit at said second end of said container;
- (e) a movable piston sealingly engaged to said inner container wall and located between said pump and said at least one slurry exit, said piston and said inner container wall and said slurry exit defining a volume for receiving said slurry;
- and
- (f) an inflatable packer on the outer circumference of said container.
Dependencies are inferred from the claim text.