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US 2011/0086942 A1Published application
Reinforced elastomers
AssigneeSchlumberger Technology Corporation
InventorsAgathe Robisson, Partha Ganguly
Life of this patent
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Abstract
An elastomeric composition for use in a borehole comprising a base polymer and a reinforcing reactive filler is disclosed. The elastomeric composition maintains flexibility before interaction and rigidity after interaction and therefore is suitable for use in downhole sealing systems.
Claims26
An elastomeric composition for use in a borehole comprising:
- a base polymer;
- a reinforcing reactive filler including a matrix of discreet portions of a first material disposed in the base polymer;
- the elastomeric composition being responsive to exposure to borehole fluid to change from a first phase to a second phase, and
- wherein the discreet portions of the first material are characterized by weaker interactions between themselves and/or the base polymer before exposure to the borehole fluid than after exposure, and wherein the first phase is characterized by a first modulus and the second phase is characterized by a second modulus, and wherein the second modulus is greater than the first modulus.
1 more element
A downhole seal comprising:
- a base polymer;
- a reinforcing reactive filler including a matrix of discreet portions of a first material disposed in the base polymer;
- and
- wherein the downhole seal is deployed into a wellbore in a first phase, and wherein the downhole seal changes to a second phase upon exposure to borehole fluid, wherein the discreet portions of the first material are characterized by weaker interaction between themselves and/or the base polymer before exposure to the borehole fluid than after exposure, and wherein the first phase is characterized by a first modulus and the second phase is characterized by a second modulus, and wherein the second modulus is greater than the first modulus.
1 more element
A method for forming a downhole seal in a wellbore comprising:
- providing a base polymer and a reinforcing reactive filler including a matrix of discreet portions of a first material disposed in the base polymer;
- deploying the downhole seal into a wellbore in a first phase;
- exposing the downhole seal to borehole fluid causing the seal to change to a second phase upon exposure to the borehole fluid, and
- wherein the discreet portions of the first material are characterized by weaker interactions between themselves and/or the base polymer before exposure to the borehole fluid than after exposure, and wherein the first phase is characterized by a first modulus and the second phase is characterized by a second modulus, and wherein the second modulus is greater than the first modulus.
1 more element
Dependencies are inferred from the claim text.