Assessment of Soil and Bedrock Abrasivity for Horizontal Directional Drilling Projects – A Qualitative Approach

摘要

A common risk to Horizontal Directional Drilling projects is excessive tool and equipment wear associated with abrasive soil and bedrock conditions. Abrasive conditions can significantly reduce drilling and reaming production rates and increase project costs associated with tool and equipment rehabilitation and replacement. This paper provides a summary of indicators that may be used to assess both soil and bedrock abrasivity during project planning and design. We have developed scales to qualify soil and bedrock abrasivity, which may be used to anticipate tool and equipment wear and assist with tool selection.