Single trip open hole well completion system and method

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 opened and fluid is circulated out the end of and upwardly around the well completion assembly and back in through the production screen and isolation port to eliminate the filter cake in the open hole of the well. Any remaining isolation sleeves are opened and the coil tubing is removed to establish the well for production.