Single trip open hole well completion system and method
US5579844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Feb 13, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well completion system which includes a production packer assembly, production tubing sealed to the packer assembly, and an isolation assembly coupled with the packer assembly. The isolation assembly includes an isolation pipe received within a production screen and sealed at both ends therewith. The isolation pipe defines at least one port and carrying a moveable sleeve defining at least one aperture. The sleeve is moveable between an open position in which the port and aperture are in communication to permit fluid flow therethrough, and a closed position in which the port and aperture are not in communication and fluid flow is prevented. The isolation system is also coupled with a wash down shoe and a shearable ball seat. The well completion method includes running the completion system into a well with the isolation sleeve in the closed position, positioning a ball in the ball seat to close fluid flow, increasing fluid pressure within the production packer assembly to set and seal the packer against the casing, and then further increasing fluid pressure to displace the ball seat and open a fluid bypass. Coil tubing is then run into the well and the top isolation sleeve is open…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.