ENHANCED SMEAR EFFECT FRACTURE PLUGGING PROCESS FOR DRILLING SYSTEMS

摘要

This invention relates to drilling a well, particularly an oil or gas well, to permit longer periods of drilling and longer lengths of casing or liner to be installed at one time. The present invention includes a combination of a smear tool and specially sized granular lost circulation material solids in the drilling fluid which work together to close and seal leaking formations and fractures whether pre-existing or induced by drilling.