| BJ TOOL SERVICES LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100155056 | EUTECTIC MATERIAL-BASED SEAL ELEMENT FOR PACKERS - The present invention relates to a seal element for a wellbore which includes a support member, a bag positioned on the support member and a eutectic material positionable in the bag. The bag may be axially compressed and axially extended along the support member thereby permitting sealing and unsealing of an annulus in a wellbore. The eutectic material may be a phase changing salt. | 06-24-2010 |
| 20100019426 | SPRING/SEAL ELEMENT - The present invention relates to a spring element. The spring element includes a metal ring with a central aperture and radial pleats formed on the metal ring. The radial pleats flatten when pressure is applied axially to compress the ring such that the metal ring increases in effective diameter. The seal element may be used to radially seal an annular bore. | 01-28-2010 |
| 20100018694 | EUTECTIC MATERIAL-BASED SEAL ELEMENT FOR PACKERS - The present invention relates to a seal element for a wellbore which includes a support member, a bag positioned on the support member and a eutectic material positionable in the bag. The bag may be axially compressed and axially extended along the support member thereby permitting sealing and unsealing of an annulus in a wellbore. The eutectic material may be a phase changing salt. | 01-28-2010 |
