A method of unplugging a seat, including dissolving at least a surface of a plug seated against the seat, and unseating the plug from the seat.
대표청구항▼
1. A method of unplugging a seat, comprising: dissolving at least a surface defined by a shell surrounding a core of a plug seated against the seat;unseating the plug from the seat;dimensioning the core to fit through the seat without dissolving the core; andpassing the core through the seat. 2. The
1. A method of unplugging a seat, comprising: dissolving at least a surface defined by a shell surrounding a core of a plug seated against the seat;unseating the plug from the seat;dimensioning the core to fit through the seat without dissolving the core; andpassing the core through the seat. 2. The method of unplugging a seat of claim 1, wherein the dissolving includes corroding. 3. The method of unplugging a seat of claim 1, wherein the plug is a ball. 4. The method of unplugging a seat of claim 1, wherein the unseating includes unsealing. 5. The method of unplugging a seat of claim 1, wherein the unseating includes dislodging. 6. A plug comprising a body having an outer surface defined by a shell surrounding a core configured to seatingly engage a seat, the shell being configured to dissolve upon exposure to a target environment, the core being dimensioned to allow passage of the core through the seat upon dissolution of the shell without dissolution of the core. 7. The plug of claim 6, wherein dissolution of the shell unseats the plug from the seat. 8. The plug of claim 6, wherein the dissolution occurs at a known rate. 9. The plug of claim 6, wherein the dissolution occurs at a uniform rate. 10. The plug of claim 6, wherein the plug is a ball. 11. The plug of claim 6, wherein the target environment includes wellbore fluid. 12. The plug of claim 6, wherein the target environment includes elevated temperatures. 13. The plug of claim 6, wherein the target environment includes elevated pressures. 14. The plug of claim 6, wherein the plug is supportive of fracturing pressures prior to dissolution of the shell. 15. A plug comprising a body having an outer surface configured to seatingly engage a seat, at least the outer surface of the body being configured to dissolve upon exposure to a target environment at least the outer surface of the body being made of a powder metal compact, comprising: a substantially-continuous, cellular nanomatrix comprising a nanomatrix material;a plurality of dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the cellular nanomatrix; anda solid-state bond layer extending throughout the cellular nanomatrix between the dispersed particles. 16. The plug of claim 15, wherein the dispersed particles comprise Mg—Zn, Mg—Zn, Mg—Al, Mg—Mn, Mg—Zn—Y, Mg—Al—Si or Mg—Al—Zn. 17. The plug of claim 15, wherein the dispersed particles have an average particle size of about 5 μm to about 300 μm. 18. The plug of claim 15, wherein the dispersed particles have an equiaxed particle shape. 19. The plug of claim 15, wherein the nanomatrix material comprises Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, and wherein the nanomatrix material has a chemical composition and the particle core material has a chemical composition that is different than the chemical composition of the nanomatrix material. 20. The plug of claim 15, wherein the cellular nanomatrix has an average thickness of about 50 nm to about 5000 nm.
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