Access control between a main bore and a lateral bore in a production system

摘要

A method for controlling entry from a main bore of a casing into a lateral bore of a producing well which incorporates (i) means for surface-actuated flow control in the lateral bore (ii) a flow control means located in the casing adjacent to the lateral bore, and said method comprising the steps of:a) removing the flow control means when entry to the lateral bore is required, said flow control means having an internal passage allowing upward flow of produced fluid from the main bore and through said passage;b) mounting a locating nipple on the casing adjacent to the lateral bore;c) engaging the flow control means with the nipple to locate the flow control means in the casing; andd) providing diverter means in the casing which engages with and is orientable relative to the nipple and operates to guide entry to the lateral bore from above the nipple following removal of said flow control means.