Surface treated lost circulation material

摘要

A granular lost circulation material for use in a wellbore during drilling operations to minimize loss of drilling fluid at a lost circulation area is disclosed. The granular lost circulation material comprises a granular material and a non-hardening tackifying agent. The granular material is coated With the non-hardening tackifying agent. The granular lost circulation material forms agglomerated particles, which form a filter cake at the lost circulation area.