Selective dual gravel pack

摘要

A method and apparatus allowing sequential production from layers in a well uses a pair of vertically spaced production assemblies formed by packer seal assembly above a respective screen assembly. The production assemblies are spaced on a production pipe string to be substantially aligned with zones to be produced. Isolation tubing allows the lower zone to be produced to depletion when the tubing is then plugged, perforated and the upper zone produced.