Methods and Compositions for Sealing Fractures, Voids, and Pores of Subterranean Rock Formations
First Claim
1. A composition that can be used to seal one or more subterranean openings in a bore hole, comprising:
- a filtration material that provides a plurality of fluid flow paths through said filtration material;
a solid material to block said fluid flow paths; and
at least one carrying fluid for carrying therewith at least one of said filtration material or said solid material into said one or more subterranean openings of said borehole.
1 Assignment
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Accused Products
Abstract
A region of a borehole with one or more openings to be sealed off, such as one or more fractures, voids, and or pores, may or may not be sealed off around a tubular string with a borehole seal such as a packer or plug. A carrying fluid may be utilized to transport a filtration material into the opening to create a bridge, which at least partially seals the opening, but still provides a flow path that permits fluid flow therethrough. A solid material and/or settable material may then utilize the fluid flow subsequently or be simultaneously spotted with or behind the filtration material to thereby form compositions which effectively seals off the flow path into the one or more openings.
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Citations
20 Claims
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1. A composition that can be used to seal one or more subterranean openings in a bore hole, comprising:
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a filtration material that provides a plurality of fluid flow paths through said filtration material; a solid material to block said fluid flow paths; and at least one carrying fluid for carrying therewith at least one of said filtration material or said solid material into said one or more subterranean openings of said borehole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 20)
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8. A method for sealing one or more subterranean openings in a borehole comprising:
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forming an initial filter bridge within said one or more subterranean openings by pumping a carrying fluid carrying a plurality of filtration elements into said one or more subterranean openings, said initial filter bridge defining a plurality of flow passages therethrough that permit at least some fluid flow therethrough; and positioning solid material into said one or more subterranean openings to encounter said plurality of flow passages within said plurality of filtration elements and seal said one or more subterranean openings. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A composition that can be used to seal one or more subterranean openings in a bore hole, comprising:
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a foam filtration material with one or more fluid flow paths therethrough to permit fluid flow through said foam filtration material; and at least one carrying fluid for carrying therewith said foam filtration material into said one or more subterranean openings in said bore hole. - View Dependent Claims (18, 19)
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Specification