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US 8,919,451 B2Granted
Varying pore size in a well screen
AssigneeHalliburton Energy Services, Inc.
InventorsPeter Dagenais, Michael L. Fripp
Life of this patent
Estimating the term…
Abstract
A method can include applying a magnetic field to a well screen, thereby varying sizes of pores via which fluid flows through the well screen. A well screen can include a magnetic shape memory material having a dimension which changes in response to application of a magnetic field. Restriction to flow through the well screen can vary in response to the change in dimension of the magnetic shape memory material.
Claims9
A method, comprising:
- applying a magnetic field to a well screen, thereby varying sizes of pores via which fluid flows through the well screen, wherein the sizes of the pores are varied from first pore sizes to second pore sizes, wherein the second pore sizes are retained when the magnetic field is no longer applied to the well screen, and wherein a substance is released from the pores in response to the applying.
A well screen, comprising:
- a magnetic shape memory material having a plurality of pores, wherein each of the pores have a dimension which changes in response to application of a magnetic field, wherein the dimension changes from a first dimension to a second dimension, wherein the second dimension is retained when the magnetic field is no longer applied to the material, wherein fluid which flows through the well screen flows through the pores of the magnetic shape memory material, and wherein restriction to flow through the well screen varies in response to the change in the dimension;
- and
- the magnetic shape memory material having a well treatment substance in the pores.
Dependencies are inferred from the claim text.