Patent ID: 6216785
Filing Date: 2001-04-17
Classification: E21B

Abstract:
Apparatus for a one trip gravel pack and production system in which a single tubing string within an outer casing of a borehole is utilized as a work string during fluid fracturing of a production zone adjacent a perforated casing section and then utilized as a production string after fracturing of said production zone; said apparatus comprising:a bottom hole assembly within the casing having an outer housing with an upper packer assembly above the production zone, a lower packer assembly below the production zone, with the upper packer assembly and the lower packer assembly being used for sealing an annulus between the bottom hole assembly and the casing, a screen adjacent a perforated section of the casing in the production zone, and a crossover port in said outer housing extending to said annulus;a service tool having a lower end, being suspended from the tubing string, being releasably connected at said lower end to said bottom hole assembly and having a mandrel and an outer slide valve assembly mounted about said mandrel, said mandrel and said outer slide valve assembly each having a crossover port therein; andmeans providing relative axial movement between said mandrel and said outer slide valve assembly carried thereby to permit alignment of said crossover ports for said mandrel and said outer slide valve assembly with said crossover port of said outer housing for flow of fracturing fluid down said annulus into said production zone in a fracturing operation.