发明申请
- 专利标题: VARIABLE Tg SHAPE MEMORY POLYURETHANE FOR WELLBORE DEVICES
- 专利标题(中): 用于井筒设备的可变Tg形状记忆聚氨酯
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申请号: US12732617申请日: 2010-03-26
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公开(公告)号: US20110232901A1公开(公告)日: 2011-09-29
- 发明人: Nicholas Carrejo , Michael H. Johnson
- 申请人: Nicholas Carrejo , Michael H. Johnson
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 主分类号: E03B3/18
- IPC分类号: E03B3/18 ; B32B37/14
摘要:
Wellbore devices for use in filtration, wellbore isolation, production control, lifecycle management and wellbore construction may include at least a first and a second shape-memory material each having a an altered geometric position and each an original geometric position. Each shape-memory material may include a polyurethane material held in the altered geometric run-in position at a temperature below glass transition temperature (Tg), where the Tgs and/or the respective slope changes of the first and second polyurethane materials are different. Once the wellbore device is in place downhole and the first and second shape-memory materials are subjected to temperatures above their Tgs, the materials will deploy and expand to recovered geometric positions at or near their original geometric positions to perform their filtration, isolation, control or other function. These deployments or expansions may occur at different times or rates.
公开/授权文献
- US08365833B2 Variable Tg shape memory polyurethane for wellbore devices 公开/授权日:2013-02-05
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