Analysis and treatment of drilling sticking accident disturbed by grouting in adjacent well in coal seam floor ground reinforcement area

Abstract

In the ground reinforcement area of Zhaogu No.1 mine, grouting well causes sudden sticking of adjacent directional drilling well, which is used as research object. We fully introduce the sticking accident process, causing reason of sticking accident, treatment process of sticking accident. Prevention and treatment methods are summarized. The lessons and experience from the occurrence and handling of the sticking accident provide an important reference for the prevention and treatment of sticking accident in similar accident.

Keywords

• coal seam floor
• directional horizontal well
• grouting reinforcement
• sticking accident
• reverse threaded buckle
• sleeve milling salvage