Methods and compositions to use shape changing polymers in subterranean formations
First Claim
1. A method of treating a formation comprising:
- forming or providing a well fluid including shape changing polymer structures, wherein the shape changing polymer structures are activated by temperature and are capable of reversibly extending and reversibly contracting with changes in temperature;
dispersing the shape changing polymer structures in a tank or flow stream having a carrier fluid, wherein before said dispersing the shape changing polymer structures are folded or rolled to reduce their cross-sectional areas by at least 50%, wherein the folded or rolled shape changing polymer structures are folded with an accordion pleating configuration; and
introducing the well fluid into a well.
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Accused Products
Abstract
A wellbore treatment fluid containing lost circulation materials and methods for using the treatment fluid, the fluid including a carrier fluid and shape changing polymer structures. The shape changing polymer structures may be folded or rolled into various cross-sectional surface area reducing configurations and are capable of reversibly extending and reversibly contracting with changes in temperature. The materials forming the shape changing polymer structures may include at least one selected from poly[ethylene-co-(vinyl acetate)], poly(ω-pentadecalactone), poly(ε-caprolactone), and copolymers thereof. A method for utilizing the treatment fluid for creation or maintenance of a well includes forming or providing the treatment fluid and introducing the treatment fluid into a borehole.
30 Citations
19 Claims
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1. A method of treating a formation comprising:
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forming or providing a well fluid including shape changing polymer structures, wherein the shape changing polymer structures are activated by temperature and are capable of reversibly extending and reversibly contracting with changes in temperature; dispersing the shape changing polymer structures in a tank or flow stream having a carrier fluid, wherein before said dispersing the shape changing polymer structures are folded or rolled to reduce their cross-sectional areas by at least 50%, wherein the folded or rolled shape changing polymer structures are folded with an accordion pleating configuration; and introducing the well fluid into a well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification