Invention Grant
US08048348B2 Shape memory polyurethane foam for downhole sand control filtration devices
有权
形状记忆聚氨酯泡沫用于井下防砂过滤装置
- Patent Title: Shape memory polyurethane foam for downhole sand control filtration devices
- Patent Title (中): 形状记忆聚氨酯泡沫用于井下防砂过滤装置
-
Application No.: US13048374Application Date: 2011-03-15
-
Publication No.: US08048348B2Publication Date: 2011-11-01
- Inventor: Ping Duan , Paul McElfresh
- Applicant: Ping Duan , Paul McElfresh
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Mossman Kumar & Tyler PC
- Main IPC: B29C39/18
- IPC: B29C39/18

Abstract:
Filtration devices may include a shape-memory material having a compressed run-in position or shape and an original expanded position or shape. The shape-memory material may include an open cell porous rigid polyurethane foam material held in the compressed run-in position at the temperature below glass transition temperature (Tg). The foam material in its compressed run-in position may be covered with a fluid-dissolvable polymeric film and/or a layer of fluid-degradable plastic. Once filtration devices are in place in downhole and are contacted by the fluid for a given amount of time at temperature, the devices may expand and totally conform to the borehole to prevent the production of undesirable solids from the formation.
Public/Granted literature
- US20110162780A1 Shape Memory Polyurethane Foam for Downhole Sand Control Filtration Devices Public/Granted day:2011-07-07
Information query