REVERSE FLOW MULTIPLE TOOL SYSTEM AND METHOD

摘要

A multiple tool reverse flow system and method in a wellbore casing for use in a wellbore is disclosed. The system comprises a plurality of catch-and-release tools and a catch-and-engage tool, wherein the catch-and-release tools allow a restriction element to pass through in a downstream direction and engage and then allow the restriction element to pass through in an upstream direction. The catch-and-engage tool allows the restriction element to pass through only in a downstream direction, engage and restrict travel of the restriction element in an upstream direction. The catch-and-engage tool forms a seat on an upstream end is positioned upstream of all of catch-and-release tools. The restriction element passes through all the tools in a downstream direction and moves back in an upstream direction and actuates each of the tools one at a time.

主权项

1. A multiple tool reverse flow system in a wellbore casing for use in a wellbore, said system comprising a plurality of catch-and-release tools and a catch-and-engage tool, wherein;
said plurality of catch-and-release tools are configured to allow a restriction element to pass through in a downstream direction; said catch-and-release tools are configured to engage and then allow said restriction element to pass through in an upstream direction; said catch-and-engage tool is configured allow said restriction element to pass through only in a downstream direction; said catch-and-engage tool is configured to engage and restrict rave of said restriction element in an upstream direction; said catch-and-engage tool is configured to form a seat on an upstream end of said catch-and-engage tool; and said catch-and-engage tool is positioned upstream of all of said plurality of catch-and-release tools.