ABANDONED WELL MONITORING SYSTEM

摘要

Method and apparatus are presented for monitoring environmental parameters in one or more abandoned wellbores. A mandrel with a radially expandable sealing element is positioned downhole, such as in a tubing string, to provide pressure isolation. A measurement tool having one or more sensors or gauges is positioned below the mandrel to measure the environmental parameters. The data is transmitted to the surface via wire or wirelessly.

主权项

1. A method of monitoring an abandoned wellbore extending through a subterranean formation, the method comprising the steps of:
a) running into an abandoned wellbore an environmental parameter measuring device below a pressure isolation assembly; b) providing annular pressure isolation across the annulus defined exterior to the pressure isolation assembly; c) measuring at least one downhole environmental parameter in the wellbore downhole from the isolation assembly using the measuring device; and d) transmitting data related to a measured parameter to the surface.