Refracturing method for plug and perforate wells

摘要

The method of the present invention deploys controlled electrolytic material, CEM, into the existing perforations to seal them and then using a bottom hole assembly, BHA, that isolates a portion of the wellbore to deliver a material that removes the CEM at a predetermined rate so that the BHA can be used to refracture the recently opened perforation. Additional new perforations can be made and fractured during the process.

主权项

1. A method of re-fracturing a well, comprising: plugging existing perforations with a controlled electrolytic material, CEM; sequentially chemically or thermally removing the CEM at said existing perforations; refracturing said existing perforations after said removing.